diff --git a/README.md b/README.md index 96c0f87..9e86ceb 100644 --- a/README.md +++ b/README.md @@ -76,11 +76,29 @@ stemctl debug rp2350 freertos heap4 3 --device /dev/bus/usb/BBB/DDD ## Debugowanie Task 3 -Automatyczny start: `heap4_fragmented_checkpoint`. +Automatyczny start: `heap4_reset_checkpoint`. Karta prowadzi po ośmiu +powtarzalnych stanach jednego procesu: + +| Event | Symbol | Najważniejszy dowód Hazard3 | +|---|---|---| +| E01 | `heap4_reset_checkpoint` | `free=largest=4080`, 1 blok | +| E02 | `heap4_alloc_a_checkpoint` | A(24), `consumed=48`, `free=4032` | +| E03 | `heap4_alloc_b_checkpoint` | B(40), `consumed=64`, `free=3968` | +| E04 | `heap4_alloc_c_checkpoint` | C(16), `consumed=32`, `free=3936` | +| E05 | `heap4_free_a_checkpoint` | `free=3984`, 2 bloki | +| E06 | `heap4_fragmented_checkpoint` | `free=4016`, 2 bloki, `free>largest` | +| E07 | `heap4_coalesced_checkpoint` | `free=largest=4080`, 1 blok | +| E08 | `task03_debug_checkpoint` | OOM `NULL`, hook=1, asserts=0, PASS=1 | + +`BlockLink_t` ma na RV32 8 B, ale port wymaga wyrównania 16 B, dlatego +`xHeapStructSize` wynosi 16 B. To rozróżnienie tłumaczy zużycie 48/64/32 B. ```gdb p g_fragmented_stats p g_final_stats +p g_a_consumed +p g_b_consumed +p g_c_consumed p xFreeBytesRemaining p xMinimumEverFreeBytesRemaining p xStart @@ -91,6 +109,12 @@ b pvPortMalloc b vPortFree ``` +Scalanie sprawdzamy z replay E06: zatrzymujemy się przed `vPortFree(g_b)`, +ustawiamy tymczasowy breakpoint na `prvInsertBlockIntoFreeList` i krokujemy. +Upstream V11.3.0 scala najpierw poprzedni/lewy, a potem następny/prawy blok. +Pełna macierz kroków diagramów jest w +[`doc/hazard3-iteration-plan.md`](doc/hazard3-iteration-plan.md). + W UI: Termdebug po lewej; źródło i listing po prawej; bash pod Neovimem. `F5` continue, `F9` breakpoint, `F10` next, `F11` step, `Shift-F11` finish, `F8` stepi, `:StudentStack`, `:StudentMemory`, `:StudentLst`. diff --git a/doc/assets/a2-structure.png b/doc/assets/a2-structure.png index 2f802e8..a2715c6 100644 Binary files a/doc/assets/a2-structure.png and b/doc/assets/a2-structure.png differ diff --git a/doc/assets/a2-structure.puml b/doc/assets/a2-structure.puml index 262ad72..b8bcce8 100644 --- a/doc/assets/a2-structure.puml +++ b/doc/assets/a2-structure.puml @@ -8,41 +8,46 @@ skinparam defaultFontSize 10 skinparam classBorderColor #2c7794 skinparam classBackgroundColor #edf6fa skinparam ArrowColor #8095a1 -title A2 STRUCTURE — in-band metadata and address order +title A2 STRUCTURE — RV32 header, split and two-sided coalescing class "01 Block header" as HEADER { next : BlockLink_t* size : size_t + raw sizeof = 8 bytes on RV32 + aligned xHeapStructSize = 16 } class "Allocated block" as ALLOC { - 02 header + 13 byte request - aligned total = 32 bytes + 02 A: header + 24 byte request + aligned total = 48 bytes payload begins after header } class "03 Free remainder" as REM { own header - size = 224 bytes + free = 4032 bytes after A } HEADER *-- ALLOC : precedes payload -ALLOC -down-> REM : split preserves 256 +ALLOC -down-> REM : first-fit + split class "04 Address-ordered free list" as LIST { previous < inserted < current + A < B < C+tail } -class "05 Right neighbour" as RIGHT { - block + block.size == current +class "05 Previous / left neighbour" as LEFT { + previous + previous.size == inserted + merge previous first } -class "06 Left neighbour" as LEFT { - previous + previous.size == block +class "06 Next / right neighbour" as RIGHT { + merged + merged.size == current + merge next second } REM -down-> LIST : insert by address -LIST -down-> RIGHT : join first -RIGHT -down-> LEFT : then join left +LIST -down-> LEFT : heap_4 tests first +LEFT -down-> RIGHT : then tests next note right of LIST -Ordering makes both physical -neighbours locally visible. +Address order exposes both physical +neighbours without scanning the arena. end note @enduml diff --git a/doc/assets/a2-structure.svg b/doc/assets/a2-structure.svg index cc49cc7..bd54938 100644 --- a/doc/assets/a2-structure.svg +++ b/doc/assets/a2-structure.svg @@ -1,63 +1,68 @@ -A2 STRUCTURE — in-band metadata and address order01 Block headernext : BlockLink_t*size : size_tAllocated block02 header + 13 byte requestaligned total = 32 bytespayload begins after header03 Free remainderown headersize = 224 bytes04 Address-ordered free listprevious < inserted < current05 Right neighbourblock + block.size == current06 Left neighbourprevious + previous.size == blockOrdering makes both physicalneighbours locally visible.precedes payloadsplit preserves 256insert by addressjoin firstthen join left01 Block headernext : BlockLink_t*size : size_traw sizeof = 8 bytes on RV32aligned xHeapStructSize = 16Allocated block02 A: header + 24 byte requestaligned total = 48 bytespayload begins after header03 Free remainderown headerfree = 4032 bytes after A04 Address-ordered free listprevious < inserted < currentA < B < C+tail05 Previous / left neighbourprevious + previous.size == insertedmerge previous first06 Next / right neighbourmerged + merged.size == currentmerge next secondAddress order exposes both physicalneighbours without scanning the arena.precedes payloadfirst-fit + splitinsert by addressheap_4 tests firstthen tests next01 RESETinitial free = 408002 ALLOC A24 byte payloadfirst-fit + split03 ALLOC B / C40 + 16 byte payloadafter = 395204 FREE A / CB remains allocated05 E01 FRAGMENTED2 free blockscurrent > largest06 FREE Binsert by addressjoin right + left07 E02 COALESCED1 free blockfinal = initial08 OOM CHECKNULL · hook=1asserts=0 · PASS=1pvPortMallocsplit remaindervPortFreeheap statscontinuecoalesceoversized request01 E01 RESET1 block · free=4080raw header=8 · aligned=1602 E02 ALLOC A(24)consumed=48free=403203 E03 ALLOC B(40)consumed=64free=396804 E04 ALLOC C(16)consumed=32free=393605 E05 FREE A2 free blocksfree=398406 E06 FREE C2 blocks · fragmentedfree=401607 E07 FREE Bmerge left + right1 block · free=408008 E08 OOM / VERIFYNULL · hook=1asserts=0 · PASS=1pvPortMallocsplit remaindersplit remaindervPortFree(A)vPortFree(C)vPortFree(B)oversized request Free : 01 one list node -Free --> Allocated : 02 first-fit + split\ncurrent free decreases -Allocated --> Fragmented : free A and C -Fragmented : 03 two free blocks +[*] --> Free : 01 E01 one list node +Free --> Allocated : 02 E04 A+B+C allocated\ncurrent free = 3936 +Allocated --> Fragmented : E05 free A\nE06 free C +Fragmented : 03 E06 two free blocks Fragmented : sum free > largest block -Fragmented --> Coalesced : free B\naddress-order joins neighbours -Coalesced : 04 one free block -Coalesced : current free = initial free -Coalesced --> OOMChecked : request > arena -OOMChecked : NULL + hook once +Fragmented --> Coalesced : 04 E07 free B\nmerge previous, then next +Coalesced : one free block +Coalesced : current = largest = initial +Coalesced --> OOMChecked : 05 E08 request > arena +OOMChecked : NULL · hook=1 · PASS=1 OOMChecked --> [*] -state "05 minimum-ever" as MIN +state "minimum-ever" as MIN Allocated -right-> MIN : records low watermark Fragmented -right-> MIN : does not rise Coalesced -right-> MIN : history remains diff --git a/doc/assets/a6-state.svg b/doc/assets/a6-state.svg index 12a9095..8c07583 100644 --- a/doc/assets/a6-state.svg +++ b/doc/assets/a6-state.svg @@ -1,42 +1,42 @@ -A6 STATE — block state and heap statisticsFreeAllocatedFragmented03 two free blockssum free > largest blockCoalesced04 one free blockcurrent free = initial freeOOMCheckedNULL + hook once05 minimum-ever01 one list node02 first-fit + splitcurrent free decreasesfree A and Cfree Baddress-order joins neighboursrequest > arenarecords low watermarkdoes not risehistory remains01 E01 one list node02 E04 A+B+C allocatedcurrent free = 3936E05 free AE06 free C04 E07 free Bmerge previous, then next05 E08 request > arenarecords low watermarkdoes not risehistory remains ELF : compile + link ELF --> E1 : reset / load / replay diff --git a/doc/assets/a7-runtime.svg b/doc/assets/a7-runtime.svg index 62a80d5..0d55821 100644 --- a/doc/assets/a7-runtime.svg +++ b/doc/assets/a7-runtime.svg @@ -1,36 +1,36 @@ -A7 RUNTIME — one artifact, two checkpoints, one proof«source»01 task03 CA/B/C experiment«artifact»02 ELF + imageheap_4 symbols«checkpoint E01»03 fragmentedblocks=2 · aligned=1«memory»04 ucHeap[4096]headers + payload«checkpoint E02»05 coalescedfinal=initial · blocks=1OOM=1 · PASS=1compile + linkreset / load / replayinspect bytescontinue«source»01 task03 CA/B/C experiment«artifact»02 ELF + imageheap_4 symbols«checkpoint E06»03 fragmentedblocks=2 · free>largest«memory»04 ucHeap[4096]headers + payload«checkpoint E08»05 verifiedfinal=initial · blocks=1OOM=1 · PASS=1compile + linkreset / load / replayinspect bytescontinue C vPortFree(B) 1. wstaw B pomiędzy A i C według adresu; - 2. jeśli end(B) == addr(C), połącz B+C; - 3. jeśli end(A) == addr(BC), połącz A+BC; + 2. jeśli end(A) == addr(B), połącz A+B; + 3. jeśli end(AB) == addr(C), połącz AB+C; wynik: [ ABC:144 FREE ] free list: A -> END @@ -126,26 +126,32 @@ Uczeń przed odsłonięciem rysuje listę i wpisuje `2 -> 1`, `96 -> 144` oraz ```text RESET/INIT + -> heap4_reset_checkpoint # E01: 4080 B -> ALLOC A(24) + -> heap4_alloc_a_checkpoint # E02: 4032 B -> ALLOC B(40) + -> heap4_alloc_b_checkpoint # E03: 3968 B -> ALLOC C(16) + -> heap4_alloc_c_checkpoint # E04: 3936 B -> FREE A + -> heap4_free_a_checkpoint # E05: 3984 B, 2 bloki -> FREE C - -> heap4_fragmented_checkpoint # 2 free blocks + -> heap4_fragmented_checkpoint # E06: 4016 B, 2 bloki -> FREE B + -> heap4_coalesced_checkpoint # E07: 4080 B, 1 blok -> OOM request - -> task03_debug_checkpoint # 1 free block, pass=1 + -> task03_debug_checkpoint # E08: NULL, hook=1, pass=1 ``` -Uczeń zapisuje tylko relacje, ponieważ dokładne bajty zależą od ABI i -konfiguracji: +Na Hazard3 `sizeof(BlockLink_t)=8`, ale `portBYTE_ALIGNMENT=16`, dlatego +`xHeapStructSize=16`. Główny replay ma stałe, testowane wartości: -| Obserwacja | Oczekiwany związek | +| Obserwacja | Oczekiwany wynik RV32/Hazard3 | | --- | --- | -| po trzech alokacjach | `after_allocations < initial_free` | -| stan pofragmentowany | `free_blocks == 2`, `largest < total_free` | -| po `free(B)` | `final_free == initial_free`, `free_blocks == 1` | -| low-water mark | `minimum_ever <= after_allocations` i nie rośnie po free | +| E01--E04 | `4080 -> 4032 -> 3968 -> 3936`, zużycie `48/64/32` | +| E05--E06 | `3984 -> 4016`, nadal 2 bloki i `largest < total_free` | +| E07 | `final_free == initial_free == 4080`, `free_blocks == 1` | +| low-water mark | `minimum_ever == 3936` i nie rośnie po free | | OOM | wynik `NULL`, hook `1`, brak uszkodzenia listy | Minimalny dowód w GDB: @@ -153,6 +159,9 @@ Minimalny dowód w GDB: ```gdb p g_fragmented_stats p g_final_stats +p g_a_consumed +p g_b_consumed +p g_c_consumed p xFreeBytesRemaining p xMinimumEverFreeBytesRemaining p xStart @@ -160,6 +169,9 @@ p pxEnd x/96bx ucHeap ``` +Szczegółowe mapowanie wszystkich diagramów do kodu, replay i dowodów zawiera +[`hazard3-iteration-plan.md`](hazard3-iteration-plan.md). + ## Kryterium zaliczenia Uczeń zalicza lekcję, jeżeli: diff --git a/doc/generated/main.tex b/doc/generated/main.tex index 3130740..941a7bf 100644 --- a/doc/generated/main.tex +++ b/doc/generated/main.tex @@ -11,7 +11,7 @@ \usepackage{amsmath} \usepackage{amssymb} \usepackage{xcolor} -\usepackage[a4paper,left=2.15cm,right=2.15cm,top=0.5cm,bottom=0.5cm,headheight=24mm,headsep=3mm,includehead]{geometry} +\usepackage[a4paper,left=2.15cm,right=2.15cm,top=0.5cm,bottom=1cm,headheight=24mm,headsep=3mm,includehead,includefoot]{geometry} \usepackage{eso-pic} \usepackage{marginnote} \usepackage{array} @@ -42,13 +42,15 @@ \newcommand{\BuildCommit}{lokalna}% } -\newcommand{\DocumentAuthor}{M. Pabiszczak} +\newcommand{\DocumentAuthor}{Mateusz Pabiszczak} \newcommand{\DocumentYear}{2026} \newcommand{\CardSeries}{freertos-c} +\newcommand{\CardSeriesTitle}{FreeRTOS C} \newcommand{\CardNumber}{01} \newcommand{\CardCount}{15} \newcommand{\CardSlug}{heap4-mechanics} \newcommand{\CardVersion}{v00.01} +\newcommand{\CardStatus}{Gotowa} \newcommand{\DocumentUUID}{87e48095-7793-54e3-9230-4e61d31bd459} \newcommand{\EmptyCheck}{\(\square\)} @@ -92,7 +94,7 @@ \hrule height0.35pt% \nointerlineskip% \begin{tabularx}{\linewidth}{@{}p{\dimexpr0.05882353\linewidth-\arrayrulewidth\relax}|p{\dimexpr0.05042017\linewidth-\arrayrulewidth\relax}|p{\dimexpr0.14705882\linewidth-\arrayrulewidth\relax}|p{\dimexpr0.09243697\linewidth-\arrayrulewidth\relax}|p{\dimexpr0.07563025\linewidth-\arrayrulewidth\relax}|p{\dimexpr0.07563025\linewidth-\arrayrulewidth\relax}|X@{}}% - \parbox[c][5.19414mm][c]{\linewidth}{\hspace{0.15mm}{\fontsize{2.85}{3}\selectfont\ttfamily\bfseries SUBJ.}\par\nointerlineskip\vspace{0.12mm}\noindent\makebox[\linewidth][r]{{\fontsize{4.45}{4.65}\selectfont\ttfamily\bfseries Inf.}\hspace{0.15mm}}\par} & \parbox[c][5.19414mm][c]{\linewidth}{\hspace{0.15mm}{\fontsize{2.85}{3}\selectfont\ttfamily\bfseries PROG.}\par\nointerlineskip\vspace{0.12mm}\noindent\makebox[\linewidth][r]{{\fontsize{4.45}{4.65}\selectfont\ttfamily\bfseries —}\hspace{0.15mm}}\par} & \parbox[c][5.19414mm][c]{\linewidth}{\hspace{0.15mm}{\fontsize{2.85}{3}\selectfont\ttfamily\bfseries CORE}\par\nointerlineskip\vspace{0.12mm}\noindent\makebox[\linewidth][r]{{\fontsize{4.45}{4.65}\selectfont\ttfamily\bfseries —}\hspace{0.15mm}}\par} & \parbox[c][5.19414mm][c]{\linewidth}{\hspace{0.15mm}{\fontsize{2.85}{3}\selectfont\ttfamily\bfseries SCOPE}\par\nointerlineskip\vspace{0.12mm}\noindent\makebox[\linewidth][r]{{\fontsize{4.45}{4.65}\selectfont\ttfamily\bfseries —}\hspace{0.15mm}}\par} & \parbox[c][5.19414mm][c]{\linewidth}{\hspace{0.15mm}{\fontsize{2.85}{3}\selectfont\ttfamily\bfseries LEVEL}\par\nointerlineskip\vspace{0.12mm}\noindent\makebox[\linewidth][r]{{\fontsize{4.45}{4.65}\selectfont\ttfamily\bfseries —}\hspace{0.15mm}}\par} & \parbox[c][5.19414mm][c]{\linewidth}{\hspace{0.15mm}{\fontsize{2.85}{3}\selectfont\ttfamily\bfseries POS.}\par\nointerlineskip\vspace{0.12mm}\noindent\makebox[\linewidth][r]{{\fontsize{4.45}{4.65}\selectfont\ttfamily\bfseries —}\hspace{0.15mm}}\par} & \parbox[c][5.19414mm][c]{\linewidth}{\hbox to\linewidth{\hspace{0.35mm}{\fontsize{3.4}{3.75}\selectfont\ttfamily\bfseries GITEA UUID}\hfill{\fontsize{3.4}{3.75}\selectfont\ttfamily 87e48095-7793-54e3-9230-4e61d31bd459}\hspace{0.35mm}}\par\nointerlineskip\hbox to\linewidth{\hspace{0.35mm}{\fontsize{3.4}{3.75}\selectfont\ttfamily\bfseries CARD UUID} {\fontsize{3.4}{3.75}\selectfont\ttfamily aea09ab7-9bfd-5368-8d1b-c8724871c1a7}\hfill{\fontsize{3.4}{3.75}\selectfont\ttfamily\bfseries AUTHOR M. Pabiszczak}\hspace{0.35mm}}} \\% + \parbox[c][5.19414mm][c]{\linewidth}{\hspace{0.15mm}{\fontsize{2.85}{3}\selectfont\ttfamily\bfseries SUBJ.}\par\nointerlineskip\vspace{0.12mm}\noindent\makebox[\linewidth][r]{{\fontsize{4.45}{4.65}\selectfont\ttfamily\bfseries Inf.}\hspace{0.15mm}}\par} & \parbox[c][5.19414mm][c]{\linewidth}{\hspace{0.15mm}{\fontsize{2.85}{3}\selectfont\ttfamily\bfseries PROG.}\par\nointerlineskip\vspace{0.12mm}\noindent\makebox[\linewidth][r]{{\fontsize{4.45}{4.65}\selectfont\ttfamily\bfseries —}\hspace{0.15mm}}\par} & \parbox[c][5.19414mm][c]{\linewidth}{\hspace{0.15mm}{\fontsize{2.85}{3}\selectfont\ttfamily\bfseries CORE}\par\nointerlineskip\vspace{0.12mm}\noindent\makebox[\linewidth][r]{{\fontsize{4.45}{4.65}\selectfont\ttfamily\bfseries —}\hspace{0.15mm}}\par} & \parbox[c][5.19414mm][c]{\linewidth}{\hspace{0.15mm}{\fontsize{2.85}{3}\selectfont\ttfamily\bfseries SCOPE}\par\nointerlineskip\vspace{0.12mm}\noindent\makebox[\linewidth][r]{{\fontsize{4.45}{4.65}\selectfont\ttfamily\bfseries —}\hspace{0.15mm}}\par} & \parbox[c][5.19414mm][c]{\linewidth}{\hspace{0.15mm}{\fontsize{2.85}{3}\selectfont\ttfamily\bfseries LEVEL}\par\nointerlineskip\vspace{0.12mm}\noindent\makebox[\linewidth][r]{{\fontsize{4.45}{4.65}\selectfont\ttfamily\bfseries —}\hspace{0.15mm}}\par} & \parbox[c][5.19414mm][c]{\linewidth}{\hspace{0.15mm}{\fontsize{2.85}{3}\selectfont\ttfamily\bfseries POS.}\par\nointerlineskip\vspace{0.12mm}\noindent\makebox[\linewidth][r]{{\fontsize{4.45}{4.65}\selectfont\ttfamily\bfseries —}\hspace{0.15mm}}\par} & \parbox[c][5.19414mm][c]{\linewidth}{\hbox to\linewidth{\hspace{0.35mm}{\fontsize{3.4}{3.75}\selectfont\ttfamily\bfseries GITEA UUID}\hfill{\fontsize{3.4}{3.75}\selectfont\ttfamily 87e48095-7793-54e3-9230-4e61d31bd459}\hspace{0.35mm}}\par\nointerlineskip\hbox to\linewidth{\hspace{0.35mm}{\fontsize{3.4}{3.75}\selectfont\ttfamily\bfseries CARD UUID} {\fontsize{3.4}{3.75}\selectfont\ttfamily aea09ab7-9bfd-5368-8d1b-c8724871c1a7}\hfill{\fontsize{3.4}{3.75}\selectfont\ttfamily\bfseries AUTHOR Mateusz Pabiszczak}\hspace{0.35mm}}} \\% \end{tabularx}% \par\nointerlineskip% \hrule height0.35pt% @@ -119,8 +121,11 @@ \pagestyle{fancy} \fancyhf{} \fancyhead[C]{\ESCPageResourceHeader} +\fancyfoot[L]{{\fontsize{6.4}{7.0}\selectfont\ttfamily UUID \DocumentUUID}} +\fancyfoot[C]{{\fontsize{6.4}{7.0}\selectfont\ttfamily \DocumentAuthor}} +\fancyfoot[R]{{\fontsize{6.4}{7.0}\selectfont\ttfamily STRONA \thepage/\pageref{LastPage}}} \renewcommand{\headrulewidth}{0pt} -\renewcommand{\footrulewidth}{0pt} +\renewcommand{\footrulewidth}{0.35pt} \newcommand{\ESCMarginTag}[4]{% \hspace*{#1}\textcolor{#2}{#3~#4}% @@ -155,7 +160,7 @@ {\bfseries\textcolor{black!65}{TECH}\par}% \vspace{0.08em}% \hspace*{0.00em}\textcolor{red}{WE~01}\textcolor{black!48}{}\par% - \hspace*{0.28em}\textcolor{orange!85!black}{EK~LOCAL~RTOS}\textcolor{black!48}{\pdftooltip[width=\textwidth]{.01}{Uczeń odtwarza dwa checkpointy Hazard3 i odróżnia current free, largest free block oraz\textCR minimum-ever.}}\par% + \hspace*{0.28em}\textcolor{orange!85!black}{EK~LOCAL~RTOS}\textcolor{black!48}{\pdftooltip[width=\textwidth]{.01}{Uczeń odtwarza osiem checkpointów Hazard3 i odróżnia current free, largest free block oraz\textCR minimum-ever.}}\par% \hspace*{0.54em}\textcolor{blue!70!black}{KW~LOCAL~RTOS}\textcolor{black!48}{\pdftooltip[width=\textwidth]{.01}{Łączy kod, diagram i zweryfikowany dowód.}}\par% \end{minipage}% }% @@ -197,10 +202,10 @@ Uczeń przechodzi od liniowego kursora z K\&R 5.4 do wielokrotnego użycia tej s \vspace{0.35em} Dwa małe modele C przygotowują przewidywanie. Główny replay uruchamia prawdziwe FreeRTOS-Kernel V11.3.0 heap\_4 na RV32I/Hazard3 i dowodzi fragmentacji, pełnego scalenia, minimum-ever oraz kontrolowanego OOM. \vspace{0.55em} -\small\begin{tabularx}{\textwidth}{@{}>{\ttfamily\raggedright\arraybackslash}p{0.85cm}>{\ttfamily\raggedright\arraybackslash}p{1.45cm}X>{\raggedright\arraybackslash}p{2.45cm}>{\raggedright\arraybackslash}p{1.75cm}>{\ttfamily\raggedright\arraybackslash}p{1.50cm}@{}} +\small\begin{tabularx}{\textwidth}{@{}>{\ttfamily\raggedright\arraybackslash}p{1.10cm}>{\ttfamily\raggedright\arraybackslash}p{1.45cm}X>{\raggedright\arraybackslash}p{2.50cm}>{\raggedright\arraybackslash}p{1.75cm}>{\ttfamily\raggedright\arraybackslash}p{1.50cm}@{}} \textbf{Lekcja} & \textbf{Task} & \textbf{Najważniejsza idea} & \textbf{Priorytet} & \textbf{Status} & \textbf{Version} \\ \hline \hline -\multicolumn{1}{|l|}{\textbf{\texttt{FC01}}} & \multicolumn{1}{l|}{\textbf{\texttt{Task01}}} & \multicolumn{1}{l|}{\textbf{headers, address-ordered free list, first-fit, split, coalescing and heap statistics}} & \multicolumn{1}{l|}{\textbf{główny}} & \multicolumn{1}{l|}{\textbf{opracowane}} & \multicolumn{1}{l|}{\textbf{\texttt{v00.01}}} \\ \hline +\textbf{\texttt{FC01}} & \textbf{\texttt{Task01}} & \textbf{headers, address-ordered free list, first-fit, split, coalescing and heap statistics} & \textbf{główny} & \textbf{opracowane} & \textbf{\texttt{v00.01}} \\ \hline \end{tabularx} \normalsize @@ -219,6 +224,10 @@ Dwa małe modele C przygotowują przewidywanie. Główny replay uruchamia prawdz \caption{A1 CONTEXT — od żądania aplikacji do rzeczywistych bajtów ucHeap. — część 1/1 (r1 c1).} \label{fig:a1-context} \end{figure} +\Needspace{6\baselineskip} +\begin{tcolorbox}[enhanced,arc=0pt,boxrule=0.35pt,colback=blue!2,colframe=blue!45!black,boxsep=0pt,left=1.2mm,right=1.2mm,top=0.7mm,bottom=0.7mm,colbacktitle=blue!7,coltitle=black,title={\ttfamily\bfseries INTERPRETACJA}] +Aplikacja korzysta z publicznego API, heap\_4 zarządza jedną areną, a Hazard3 pokazuje jej rzeczywisty stan. +\end{tcolorbox} \ESCSectionBlockEnd \clearpage @@ -227,10 +236,14 @@ Dwa małe modele C przygotowują przewidywanie. Główny replay uruchamia prawdz \vspace{0.35em} \begin{figure}[H] \centering - \includegraphics[width=0.44697\linewidth,trim=0.000bp 0.000bp 0.000bp 0.000bp,clip]{\detokenize{../assets/a2-structure.png}} + \includegraphics[width=0.47273\linewidth,trim=0.000bp 0.000bp 0.000bp 0.000bp,clip]{\detokenize{../assets/a2-structure.png}} \caption{A2 STRUCTURE — metadane wewnątrz areny i adresowo uporządkowana lista. — część 1/1 (r1 c1).} \label{fig:a2-structure} \end{figure} +\Needspace{6\baselineskip} +\begin{tcolorbox}[enhanced,arc=0pt,boxrule=0.35pt,colback=blue!2,colframe=blue!45!black,boxsep=0pt,left=1.2mm,right=1.2mm,top=0.7mm,bottom=0.7mm,colbacktitle=blue!7,coltitle=black,title={\ttfamily\bfseries INTERPRETACJA}] +Każdy blok ma nagłówek, a tylko wolne bloki wykorzystują wskaźnik next do budowy listy uporządkowanej adresami. +\end{tcolorbox} \ESCSectionBlockEnd \clearpage @@ -240,10 +253,14 @@ Dwa małe modele C przygotowują przewidywanie. Główny replay uruchamia prawdz \vspace{0.35em} \begin{figure}[H] \centering - \includegraphics[width=0.86277\linewidth,trim=0.000bp 0.000bp 0.000bp 0.000bp,clip]{\detokenize{../assets/a5-flow.png}} + \includegraphics[width=0.86383\linewidth,trim=0.000bp 0.000bp 0.000bp 0.000bp,clip]{\detokenize{../assets/a5-flow.png}} \caption{A5 FLOW — inicjalizacja, A/B/C, fragmentacja, dwustronne scalenie i OOM. — część 1/1 (r1 c1).} \label{fig:a5-flow} \end{figure} +\Needspace{6\baselineskip} +\begin{tcolorbox}[enhanced,arc=0pt,boxrule=0.35pt,colback=blue!2,colframe=blue!45!black,boxsep=0pt,left=1.2mm,right=1.2mm,top=0.7mm,bottom=0.7mm,colbacktitle=blue!7,coltitle=black,title={\ttfamily\bfseries INTERPRETACJA}] +Jeden przebieg A/B/C przechodzi od pustej areny przez trzy przydziały i dwa wolne obszary do ponownie scalonego bloku. +\end{tcolorbox} \ESCSectionBlockEnd \end{landscape} @@ -253,10 +270,14 @@ Dwa małe modele C przygotowują przewidywanie. Główny replay uruchamia prawdz \vspace{0.35em} \begin{figure}[H] \centering - \includegraphics[width=0.52424\linewidth,trim=0.000bp 0.000bp 0.000bp 0.000bp,clip]{\detokenize{../assets/a6-state.png}} + \includegraphics[width=0.48636\linewidth,trim=0.000bp 0.000bp 0.000bp 0.000bp,clip]{\detokenize{../assets/a6-state.png}} \caption{A6 STATE — wolny, przydzielony, rozdzielony, scalony oraz minimum-ever. — część 1/1 (r1 c1).} \label{fig:a6-state} \end{figure} +\Needspace{6\baselineskip} +\begin{tcolorbox}[enhanced,arc=0pt,boxrule=0.35pt,colback=blue!2,colframe=blue!45!black,boxsep=0pt,left=1.2mm,right=1.2mm,top=0.7mm,bottom=0.7mm,colbacktitle=blue!7,coltitle=black,title={\ttfamily\bfseries INTERPRETACJA}] +Bieżąca liczba wolnych bajtów może rosnąć po free, ale minimum-ever pozostaje historycznym minimum. +\end{tcolorbox} \ESCSectionBlockEnd \clearpage @@ -270,6 +291,10 @@ Dwa małe modele C przygotowują przewidywanie. Główny replay uruchamia prawdz \caption{A7 RUNTIME — kod, ELF, checkpoint, pamięć i statystyki jednego przebiegu. — część 1/1 (r1 c1).} \label{fig:a7-runtime} \end{figure} +\Needspace{6\baselineskip} +\begin{tcolorbox}[enhanced,arc=0pt,boxrule=0.35pt,colback=blue!2,colframe=blue!45!black,boxsep=0pt,left=1.2mm,right=1.2mm,top=0.7mm,bottom=0.7mm,colbacktitle=blue!7,coltitle=black,title={\ttfamily\bfseries INTERPRETACJA}] +Ten sam artefakt łączy źródło, symbole ELF, osiem checkpointów, pamięć ucHeap i końcowe asercje. +\end{tcolorbox} \ESCSectionBlockEnd \end{landscape} @@ -281,20 +306,23 @@ Dwa małe modele C przygotowują przewidywanie. Główny replay uruchamia prawdz {\scriptsize\ttfamily aea09ab7-9bfd-5368-8d1b-c8724871c1a7}\par \begin{ESCBlockFrame}{A — przewidywanie} Przejdź przez model nagłówka, split i porządek adresowy przed uruchomieniem prawdziwego heap\_4. -\begin{ESCStepFrame}{size · Policz rozmiar bloku.} -Dodaj nagłówek do 13 bajtów i wyrównaj wynik do ośmiu. +\begin{ESCStepFrame}{size · Policz rozmiary całych bloków.} +Rozróżnij surowy BlockLink\_t (8 bajtów) od xHeapStructSize (16 bajtów), dodaj nagłówek do żądań 24, 40 i 16 bajtów, a następnie wyrównaj wynik do 16. \end{ESCStepFrame} \begin{ESCStepFrame}{list · Narysuj listę po free(A,C).} Zaznacz, dlaczego przydzielony B rozdziela dwa wolne obszary. \end{ESCStepFrame} \end{ESCBlockFrame} \begin{ESCBlockFrame}{B — replay Hazard3} -Powiąż diagram z dwoma deterministycznymi checkpointami. -\begin{ESCStepFrame}{fragmented · Sprawdź E01.} -Porównaj liczbę wolnych bloków, największy blok i bieżące wolne bajty. +Powiąż każdy stan diagramu z deterministycznym checkpointem E01--E08. +\begin{ESCStepFrame}{allocate · Sprawdź E01--E04.} +Potwierdź wartości 4080, 4032, 3968 i 3936 oraz zużycie 48/64/32 bajtów. \end{ESCStepFrame} -\begin{ESCStepFrame}{coalesced · Sprawdź E02.} -Udowodnij pełne scalenie, zachowanie minimum-ever i kontrolowany OOM. +\begin{ESCStepFrame}{release · Sprawdź E05--E07.} +Porównaj liczbę wolnych bloków i udowodnij scalenie poprzedniego, a potem następnego sąsiada. +\end{ESCStepFrame} +\begin{ESCStepFrame}{verify · Sprawdź E08.} +Udowodnij zachowanie minimum-ever, kontrolowany OOM, brak asercji i PASS=1. \end{ESCStepFrame} \end{ESCBlockFrame} \begin{ESCBlockFrame}{Ćwiczenie · Ćwiczenie — ta sama suma, inna użyteczność} @@ -302,7 +330,7 @@ Zaproponuj dwa układy wolnych bloków o tej samej sumie bajtów, ale tylko jede \par\textbf{Evidence:} Dwa diagramy listy, suma wolnych bajtów, rozmiar największego bloku i wynik pvPortMalloc. \par\textbf{Acceptance:} Uczeń nie utożsamia sumy wolnej pamięci z możliwością pojedynczego dużego przydziału. \end{ESCBlockFrame} -\tcblower\textbf{Task acceptance:} Model 13 -> 32 bajty; poprawna predykcja dwóch wolnych bloków po free(A,C) i jednego po free(B); final free = initial free; minimum-ever nie rośnie; OOM zwraca NULL; PASS=1. +\tcblower\textbf{Task acceptance:} Na RV32 BlockLink\_t ma 8 bajtów, lecz 16-bajtowe wyrównanie portu daje xHeapStructSize=16; A/B/C zużywają 48/64/32 bajty; po free(A,C) są dwa wolne bloki, po free(B) jeden; final free = initial free; minimum-ever nie rośnie; OOM zwraca NULL; PASS=1. \end{ESCTaskFrame} \begin{ESCConclusionFrame} heap\_4 odzyskuje pamięć dzięki metadanym w arenie, adresowo uporządkowanej liście i scalaniu sąsiadów. Suma wolnych bajtów nie zastępuje informacji o największym bloku, a minimum-ever jest historią, nie bieżącym stanem. diff --git a/doc/hazard3-iteration-plan.md b/doc/hazard3-iteration-plan.md new file mode 100644 index 0000000..3d237eb --- /dev/null +++ b/doc/hazard3-iteration-plan.md @@ -0,0 +1,102 @@ +# FC01 — plan iteracji diagramów w Hazard3 + +## Zasada + +Kursor porusza się po diagramie, nie po przypadkowych liniach programu. +Każda kotwica ma jeden z dwóch kontraktów: + +- `CODE` — otwiera właściwe źródło lub dowód ELF; nie uruchamia programu; +- `RUN` — odtwarza program od czystego resetu do wskazanego checkpointu, + ustawia Neovima i udostępnia zestaw wyrażeń GDB. + +Ten sam snapshot może wystąpić w kilku perspektywach. Nie powtarza to +eksperymentu: A2 pyta o strukturę, A6 o stan, a A7 o jakość dowodu. + +## A1 CONTEXT — granice odpowiedzialności + +| Step | Tryb | Otwórz | Pytanie kontrolne | +|---|---|---|---| +| 01 Application | CODE | `main()` | Czy aplikacja dotyka metadanych allocatora? | +| 02 FreeRTOS API | CODE | wywołania `pvPortMalloc`, `vPortFree`, stats | Gdzie kończy się publiczny kontrakt? | +| 03 heap_4 | CODE | upstream `heap_4.c` | Które funkcje wybierają, dzielą i scalają blok? | +| 04 ucHeap | CODE | definicja `ucHeap[4096]` | Gdzie fizycznie leżą nagłówki i payload? | +| 05 Hazard3 | CODE | test symboli ELF | Czy debugujemy dokładnie artefakt z karty? | + +A1 nie ma checkpointu: opisuje architekturę, a nie zdarzenie runtime. + +## A2 STRUCTURE — nagłówek, split i scalenie + +| Step | Tryb / replay | Obserwuj | Warunek zaliczenia | +|---|---|---|---| +| 01 Header | CODE | `BlockLink_t`, `portBYTE_ALIGNMENT` | raw header=8 B, alignment=16 B, `xHeapStructSize`=16 B | +| 02 Alignment | RUN E02 | `g_a`, `g_a_consumed` | A jest wyrównane, cały blok zużywa 48 B | +| 03 Split | RUN E02 | `g_after_a_stats` | pozostaje 1 wolny blok i 4032 B | +| 04 Address order | RUN E06 | `g_a`, `g_b`, `g_c`, stats | adresy rosną, a B rozdziela 2 wolne obszary | +| 05 Merge previous | RUN E06 + step | `pxIterator`, `pxBlockToInsert` | poprzedni/lewy blok jest testowany i scalany pierwszy | +| 06 Merge next | RUN E06 + step | powiększony blok i `pxNextFreeBlock` | następny/prawy blok jest scalany drugi | + +Dla kroków 05–06 po replay E06: + +```gdb +tbreak prvInsertBlockIntoFreeList +continue # wykonaj vPortFree(g_b) +p pxIterator +p pxBlockToInsert +next # test poprzedniego/lewego sąsiada +next # test następnego/prawego sąsiada +``` + +## A5 FLOW — pełny przebieg + +| Event | Operacja | Wartości RV32/Hazard3 | Dowód | +|---|---|---|---| +| E01 | reset/init | free=4080 | 1 blok, largest=4080 | +| E02 | alloc A(24) | consumed=48, free=4032 | A != NULL, aligned=1 | +| E03 | alloc B(40) | consumed=64, free=3968 | B != NULL, aligned=1 | +| E04 | alloc C(16) | consumed=32, free=3936 | C != NULL, aligned=1 | +| E05 | free A | free=3984 | 2 wolne bloki | +| E06 | free C | free=4016 | 2 bloki, free > largest | +| E07 | free B | free=largest=4080 | 1 wolny blok, minimum-ever=3936 | +| E08 | oversized alloc | NULL | hook=1, asserts=0, layout=1, PASS=1 | + +Każdy Enter na A5 wykonuje czysty replay do dokładnie jednego eventu. Nie +kontynuujemy stanu pozostałego po poprzednim kroku. + +## A6 STATE — znaczenie liczników + +| Step | Replay | Hipoteza | +|---|---|---| +| 01 Free | E01 | current free i largest są równe | +| 02 Allocated | E04 | przydziały zmniejszają current free do 3936 | +| 03 Fragmented | E06 | total free może być większe od largest | +| 04 Coalesced | E07 | current, largest i initial znów są równe | +| 05 Minimum-ever | E08 | minimum-ever pozostaje 3936 mimo odzyskania areny | + +## A7 RUNTIME — jakość dowodu + +| Step | Tryb / replay | Co musi znaleźć się w dowodzie | +|---|---|---| +| 01 Source | CODE | blob źródła eksperymentu | +| 02 ELF | CODE | SHA artefaktu i symbole upstream/checkpointów | +| 03 Fragmented | RUN E06 | PC, 2 bloki, free=4016, largest 1} \\ -16--27 & Task 3 RUN & dwa checkpointy prawdziwego \texttt{heap\_4.c} na Pico 2 W \\ +16--27 & Task 3 RUN & osiem checkpointów E01--E08 prawdziwego \texttt{heap\_4.c} \\ 27--30 & wyjście & odróżnić total free, largest free i minimum-ever \\ \bottomrule \end{tabularx} @@ -209,8 +209,9 @@ po: A:144 -> END blocks=1 total=144 largest=144 \end{lstlisting} Porządek po adresie sprawia, że fizycznych sąsiadów można sprawdzić podczas -jednego wstawienia. To jest mechanizm funkcji -\texttt{prvInsertBlockIntoFreeList()} z \texttt{heap\_4.c}. +jednego wstawienia. Uproszczony Task 2 scala prawą, a następnie lewą stronę. +Właściwy \texttt{prvInsertBlockIntoFreeList()} z FreeRTOS V11.3.0 wykonuje +te same dwa testy w kolejności: poprzedni/lewy, następnie kolejny/prawy blok. \section{Task 3 — jedyny centralny RUN (11 minut)} @@ -224,17 +225,21 @@ stemctl debug rp2350 freertos heap4 3 --device /dev/bus/usb/BBB/DDD \begin{lstlisting} RESET/INIT - -> ALLOC A(24) -> ALLOC B(40) -> ALLOC C(16) - -> FREE A -> FREE C - -> heap4_fragmented_checkpoint # STOP 1 - -> FREE B -> OOM request - -> task03_debug_checkpoint # STOP 2 + -> heap4_reset_checkpoint # E01: free=4080 + -> heap4_alloc_a_checkpoint # E02: free=4032, used=48 + -> heap4_alloc_b_checkpoint # E03: free=3968, used=64 + -> heap4_alloc_c_checkpoint # E04: free=3936, used=32 + -> heap4_free_a_checkpoint # E05: free=3984, blocks=2 + -> heap4_fragmented_checkpoint # E06: free=4016, blocks=2 + -> heap4_coalesced_checkpoint # E07: free=4080, blocks=1 + -> task03_debug_checkpoint # E08: OOM, hook, PASS \end{lstlisting} -\textbf{STOP 1:} zapisz liczbę bloków, sumę i largest. Przed \texttt{F5} -przewidź, co zmieni \texttt{FREE B}. - -\textbf{STOP 2:} sprawdź odzyskanie areny, minimum-ever, OOM i hook. +\textbf{E01--E04:} sprawdź, że zużycie obejmuje wyrównany nagłówek całego +bloku, a nie tylko payload. \textbf{E05--E06:} porównaj sumę wolną z largest. +Przed przejściem z E06 do E07 ustaw tymczasowy breakpoint na +\texttt{prvInsertBlockIntoFreeList()} i sprawdź oba testy sąsiedztwa. +\textbf{E07--E08:} potwierdź odzyskanie areny, minimum-ever, OOM i hook. \newpage \section{Dowód na Pico 2 W / RP2350} @@ -248,11 +253,14 @@ realną pamięć SRAM, w której obserwujemy ten sam algorytm. \begin{lstlisting} p g_fragmented_stats p g_final_stats +p g_a_consumed +p g_b_consumed +p g_c_consumed p xFreeBytesRemaining p xMinimumEverFreeBytesRemaining p xStart p pxEnd -x/96bx ucHeap +x/160bx ucHeap \end{lstlisting} \subsection*{Tabela obserwacji} @@ -263,10 +271,10 @@ Wielkość & Odczyt & Warunek \\ \midrule \texttt{initial\_free} & \blank{2.3cm} & punkt odniesienia \\ \texttt{after\_allocations} & \blank{2.3cm} & mniejsze niż initial \\ -STOP 1: free blocks & \blank{2.3cm} & równe 2 \\ -STOP 1: total / largest & \blank{2.3cm} & largest mniejsze niż total \\ -STOP 2: final free & \blank{2.3cm} & równe initial \\ -STOP 2: free blocks & \blank{2.3cm} & równe 1 \\ +E06: free blocks & \blank{2.3cm} & równe 2 \\ +E06: total / largest & \blank{2.3cm} & largest mniejsze niż total \\ +E07: final free & \blank{2.3cm} & równe initial \\ +E07: free blocks & \blank{2.3cm} & równe 1 \\ minimum-ever & \blank{2.3cm} & nie rośnie po free \\ OOM / hook / asserts / pass & \blank{2.3cm} & \texttt{1 / 1 / 0 / 1} \\ \bottomrule diff --git a/doc/pdf/mpabi-inf-freertos-c-01-heap4-mechanics-v00.01-87e48095-7793-54e3-9230-4e61d31bd459.pdf b/doc/pdf/mpabi-inf-freertos-c-01-heap4-mechanics-v00.01-87e48095-7793-54e3-9230-4e61d31bd459.pdf index 6f53776..83da598 100644 Binary files a/doc/pdf/mpabi-inf-freertos-c-01-heap4-mechanics-v00.01-87e48095-7793-54e3-9230-4e61d31bd459.pdf and b/doc/pdf/mpabi-inf-freertos-c-01-heap4-mechanics-v00.01-87e48095-7793-54e3-9230-4e61d31bd459.pdf differ diff --git a/doc/stan-prac.md b/doc/stan-prac.md index b29a965..83771cd 100644 --- a/doc/stan-prac.md +++ b/doc/stan-prac.md @@ -1,133 +1,51 @@ -# K01 `heap4` — punkt zatrzymania +# FC01 `heap_4` — stan weryfikacji -## Stan repozytorium +## Stan na 2026-07-20 -- Data: `2026-07-14`. -- Commit bazowy: `8aee0b104c4f6e6ffef119ab6f57a3e724144221`. -- Gałąź robocza: `work/list-first-rp2350-debug`. -- Zmienione źródła: brak. -- Zmieniona karta PDF: brak. -- Lokalny stan `.stem/`: wygenerowany przez testy `stemctl`, nie jest częścią karty. -- Review Claude: nieukończony; dwie sesje CLI nie zwróciły wyniku i zostały zatrzymane. +Karta ma jeden centralny eksperyment na niezmodyfikowanym +`heap_4.c` z FreeRTOS-Kernel V11.3.0. Przebieg jest podzielony na osiem +deterministycznych checkpointów E01–E08 i działa na RV32I/Hazard3. -## Potwierdzone +## Potwierdzone na Hazard3 -- [x] `make host` buduje 10/10 programów. -- [x] Wszystkie programy hostowe uruchamiają się z kodem `0`. -- [x] `make tasks RV_ENV_ROOT=...` buduje 10/10 ELF dla RV32I. -- [x] `stemctl test native-amd64 freertos heap4 10` przechodzi. -- [x] RP2350 Probe jest wykrywany bez `sudo` po wejściu do grupy `rpdebug`. -- [x] OpenOCD wykrywa `rp2350.rv0` i `rp2350.rv1`. -- [x] Oba rdzenie raportują `XLEN=32`. -- [ ] Nie wykonano testu programu K01 na RTL Hazard3. -- [ ] Nie wgrano programu K01 na fizyczny RP2350. +| Event | Stan | Dowód | +|---|---|---| +| E01 | arena po inicjalizacji | `free=largest=4080`, 1 blok | +| E02 | `alloc A(24)` | zużyto 48, zostało 4032 | +| E03 | `alloc B(40)` | zużyto 64, zostało 3968 | +| E04 | `alloc C(16)` | zużyto 32, zostało 3936 | +| E05 | `free(A)` | 3984, 2 wolne bloki | +| E06 | `free(C)` | 4016, 2 bloki, `free > largest` | +| E07 | `free(B)` | `free=largest=4080`, 1 blok | +| E08 | kontrolowany OOM | `NULL`, hook=1, asserts=0, PASS=1 | -## Wyniki bazowe — host AMD64 +Na RV32 `sizeof(BlockLink_t) == 8`, ale `portBYTE_ALIGNMENT == 16`, więc +prywatne `xHeapStructSize == 16`. To wyjaśnia zużycie 48/64/32 bajtów. -| Task | Wynik | -|---|---| -| 01 | `header=16 aligned=16 allocated=1 total=32 user=16` | -| 02 | `free=136 largest=80 count=3` | -| 03 | `offset=0 free=144 end_last=1` | -| 04 | `r1=24 r9=32 r17=40 delta=7` | -| 05 | `ok=1 allocated=120 remaining=0` | -| 06 | `allocated=48 split=128 nodes=1` | -| 07 | `order=1 count=3 total=120` | -| 08 | `count=1 size=160 merged_right=1` | -| 09 | `heap=256 adjusted=248 dynamic=1 host_trace=1` | -| 10 | `ok=1 nodes=1 free=240 min=144` | +## Diagramy i iteracja -## Braki P0 +- A1 CONTEXT: pięć kroków CODE — granice odpowiedzialności. +- A2 STRUCTURE: jeden krok CODE i pięć kroków RUN — nagłówek, split, + lista adresowa oraz scalenie lewego i prawego sąsiada. +- A5 FLOW: osiem kroków RUN mapowanych 1:1 na E01–E08. +- A6 STATE: pięć reprezentatywnych stanów E01, E04, E06, E07 i E08. +- A7 RUNTIME: tożsamość źródła/ELF, pamięć `ucHeap` i końcowy werdykt. +- A3, A4 i A8 są jawnie pominięte, ponieważ dublowałyby A2/A5. -- [ ] Dodać `stem-card.yaml`. -- [ ] Obsłużyć targety: - - [ ] `native` / `native-amd64`; - - [ ] `hazard3-baremetal` / `hazard3-sim`; - - [ ] `rp2350-rv` / fizyczny Hazard3. -- [ ] Naprawić `stemctl test hazard3-sim freertos heap4 10`. - - Stan obecny: `Legacy Hazard3 card/task is unsupported`. -- [ ] Dodać asercje wyniku. - - Stan obecny: każdy `main()` zwraca `0` niezależnie od wartości `g_*`. -- [ ] Dodać automatyczne porównanie wyników AMD64 i RV32. -- [ ] Dodać bezpieczne sprawdzanie przepełnienia rozmiaru żądania. -- [ ] Sprawdzić wyrównanie buforów używanych jako `HeapBlock`. -- [ ] Nie dereferencjonować wyniku alokacji przed sprawdzeniem `p != NULL`. +Szczegółowa kolejność komend, obserwacji i kryteriów znajduje się w +[`hazard3-iteration-plan.md`](hazard3-iteration-plan.md). -## Braki debug +## Wykonane testy -- [ ] K10: dodać jawne checkpointy: - - [ ] `INIT`; - - [ ] `ALLOC_A`; - - [ ] `ALLOC_B`; - - [ ] `FREE_A`; - - [ ] `ALLOC_C`; - - [ ] `ALLOC_REJECTED`; - - [ ] `FREE_B`; - - [ ] `FREE_C`; - - [ ] `DONE`. -- [ ] K10: zapisywać przy checkpointcie: - - [ ] numer zdarzenia; - - [ ] adres bloku; - - [ ] liczbę wolnych bloków; - - [ ] sumę wolnej pamięci; - - [ ] minimum wolnej pamięci; - - [ ] status `RUNNING/PASS/FAIL`. -- [ ] Simulator: - - [ ] breakpoint na funkcji checkpointu; - - [ ] inspekcja listy i pamięci; - - [ ] bez obiecywania watchpointów — szybki stub obsługuje obecnie breakpointy wykonania. -- [ ] RP2350: - - [ ] OpenOCD `target/rp2350-riscv.cfg`; - - [ ] breakpoint `main`; - - [ ] sprzętowy watchpoint na numerze zdarzenia/statusie; - - [ ] porównanie adresów i wyników z symulatorem; - - [ ] Termdebug i DAP na tym samym ELF. +- testy hostowe Task 1–3; +- budowa RV32I i kontrola symboli ELF; +- Hazard3 RTL: zakończenie kodem 0 po 27308 cyklach; +- osiem checkpointów obecnych w ELF; +- walidacja JSON i odwołań `code_ref`/`snapshot_ref`; +- kontrola PlantUML, SVG, HTML, TeX i siedmiostronicowego PDF; +- TypeScript/React typecheck generatora. -## Braki materiału - -- [ ] Zmniejszyć udział prozy. -- [ ] Zastąpić akapity: - - [ ] listami kontrolnymi; - - [ ] tabelami wartości; - - [ ] komendami do skopiowania; - - [ ] punktami zatrzymania GDB; - - [ ] kryteriami zaliczenia. -- [ ] Szablon każdego taska: - - [ ] `Cel` — maksymalnie 3 punkty; - - [ ] `Uruchom` — komendy; - - [ ] `Zatrzymaj` — breakpoint/watchpoint; - - [ ] `Obserwuj` — symbole i pamięć; - - [ ] `Oczekuj` — wartości host/RV32; - - [ ] `Zmień` — jeden eksperyment; - - [ ] `Zaliczenie` — mierzalna checklista. -- [ ] Przenieść pełne listingi C/ASM do dodatku. -- [ ] Pierwsze strony PDF przeznaczyć na kartę prowadzącego i przebieg lekcji. - -## Kolejność wznowienia K01 - -1. Zamknąć wymagania w bezpośrednim poprzedniku `inf/structures`. -2. Dodać testy wyniku do K01. -3. Dodać kontrakt `stem-card.yaml`. -4. Uruchomić 10/10 tasków na Hazard3 RTL. -5. Dodać checkpointy K10. -6. Zbudować K10 dla `rp2350-rv`. -7. Wgrać i debugować K10 przez JTAG. -8. Przebudować README/PDF do formatu list-first. -9. Wykonać końcowy review techniczny i dydaktyczny. - -## Bezpośredni poprzednik - -- Seria: `inf`. -- Karta: `structures`. -- Repozytorium: `lab-rv32i-c-structures`. -- Przejście wymagane przed K01: - - [ ] `struct` i `typedef`; - - [ ] struktura samoreferencyjna; - - [ ] pole `next`; - - [ ] przejście po liście; - - [ ] wstawianie elementu; - - [ ] wartownik; - - [ ] `sizeof`, padding i wyrównanie na AMD64/RV32; - - [ ] niezmienniki listy; - - [ ] obserwacja w GDB. +## Pozostaje poza zakresem tej iteracji +- próba na fizycznym RP2350/Pico 2 W; +- commit i publikacja — wymagają osobnego polecenia. diff --git a/json/card_source.json b/json/card_source.json index 9decc8c..d5e6d3d 100644 --- a/json/card_source.json +++ b/json/card_source.json @@ -17,7 +17,7 @@ "status": "Gotowa", "version": "v00.01", "uuid": "87e48095-7793-54e3-9230-4e61d31bd459", - "author": "M. Pabiszczak", + "author": "Mateusz Pabiszczak", "year": "2026" }, "generated": { @@ -39,7 +39,7 @@ { "id": "A2", "label": "STRUCTURE", - "subtitle": "headers and address order", + "subtitle": "RV32 header, split and address order", "status": "enabled", "target_label": "fig:a2-structure" }, @@ -55,7 +55,7 @@ "label": "APPLICATION", "subtitle": "experiment is already explicit", "status": "unavailable", - "reason": "The concrete A/B/C allocation experiment is completely represented by A5 and its two runtime checkpoints." + "reason": "The concrete A/B/C allocation experiment is completely represented by the eight-state replay in A5." }, { "id": "A5", @@ -87,35 +87,37 @@ } ], "debug_strategies": { - "code.model": { - "id": "code.model", + "code.boundary": { + "id": "code.boundary", "kind": "code", "action": "open", "expected_observations": [ - "requested size includes header and alignment", - "free list is ordered by block address" + "application code calls only the public FreeRTOS allocation API", + "the selected heap implementation is linked below that API" ], "assertions": [ - "payload begins after the header", - "split preserves the total arena size" + "the application never edits allocator metadata", + "Hazard3 observes the same ucHeap object named by the ELF" ], "evidence_fields": [ "code_ref", - "header bytes", - "wanted bytes", - "block address" + "public symbol", + "arena symbol", + "target profile" ], "prerequisites": [ "K&R 5.4 linear allocator complete" ], "layout": [ - "header", - "payload", - "remainder", - "address-ordered list" + "application", + "FreeRTOS API", + "heap_4", + "ucHeap", + "Hazard3" ], "commands": [ - "rg -n 'ModelBlock|align_up|insert_and_coalesce' src/tasks" + "rg -n 'pvPortMalloc|vPortFree|vPortGetHeapStats|ucHeap' src/tasks/task03_freertos_heap4.c", + "rg -n 'TASK03_KERNEL_SOURCES|HEAP4_SOURCE' Makefile" ] }, "code.heap4": { @@ -146,7 +148,45 @@ "pxEnd" ], "commands": [ - "rg -n 'BlockLink_t|prvInsertBlockIntoFreeList|pvPortMalloc|vPortFree' vendor/FreeRTOS-Kernel/portable/MemMang/heap_4.c" + "rg -n 'BlockLink_t|prvHeapInit|prvInsertBlockIntoFreeList|pvPortMalloc|vPortFree' ${FREERTOS_KERNEL_PATH:-/opt/FreeRTOS-Kernel}/portable/MemMang/heap_4.c" + ] + }, + "run.timeline": { + "id": "run.timeline", + "kind": "run", + "action": "replay", + "expected_observations": [ + "every checkpoint is reached from a clean reset with the same ELF", + "free bytes change by the aligned whole-block size, not by payload alone" + ], + "assertions": [ + "A, B and C are aligned", + "the free-byte sequence is strictly decreasing during allocation" + ], + "evidence_fields": [ + "payload pointer", + "consumed bytes", + "available bytes", + "free-list statistics" + ], + "prerequisites": [ + "clean Hazard3 RAM", + "task03 image loaded" + ], + "layout": [ + "current checkpoint", + "source call", + "heap statistics", + "ucHeap memory" + ], + "commands": [ + "print g_initial_free", + "print g_after_a_free", + "print g_after_b_free", + "print g_after_allocations", + "print g_a_consumed", + "print g_b_consumed", + "print g_c_consumed" ] }, "run.fragmented": { @@ -180,7 +220,43 @@ "commands": [ "break heap4_fragmented_checkpoint", "print g_fragmented_stats", - "x/64bx ucHeap" + "print g_fragmented_free", + "x/96bx ucHeap" + ] + }, + "run.coalescing": { + "id": "run.coalescing", + "kind": "run", + "action": "replay", + "expected_observations": [ + "the replay stops after free(C), immediately before free(B)", + "inside prvInsertBlockIntoFreeList the previous block is merged before the next block" + ], + "assertions": [ + "pxIterator < pxBlockToInsert < pxIterator->pxNextFreeBlock", + "the left adjacency test is evaluated before the right adjacency test" + ], + "evidence_fields": [ + "pxIterator", + "pxBlockToInsert", + "left end address", + "right start address" + ], + "prerequisites": [ + "task01.fragmented replay ready" + ], + "layout": [ + "application call vPortFree(g_b)", + "prvInsertBlockIntoFreeList", + "free-list links", + "ucHeap addresses" + ], + "commands": [ + "tbreak prvInsertBlockIntoFreeList", + "continue", + "print pxIterator", + "print pxBlockToInsert", + "next" ] }, "run.coalesced": { @@ -193,15 +269,14 @@ ], "assertions": [ "final free equals initial free", - "minimum-ever does not rise after free", - "oversized allocation returns NULL and calls the hook once" + "one free block is also the largest block", + "minimum-ever does not rise after free" ], "evidence_fields": [ "final free", "largest block", "minimum-ever", - "OOM hook", - "PASS" + "free blocks" ], "prerequisites": [ "fragmented checkpoint reached" @@ -213,8 +288,46 @@ "PASS" ], "commands": [ - "break task03_debug_checkpoint", + "break heap4_coalesced_checkpoint", "print g_final_stats", + "print g_final_free", + "print g_minimum_ever_free" + ] + }, + "run.verified": { + "id": "run.verified", + "kind": "run", + "action": "replay", + "expected_observations": [ + "the oversized request returns NULL", + "the malloc-failed hook runs once without corrupting the recovered arena" + ], + "assertions": [ + "g_oom_is_null equals 1", + "g_malloc_failed_hooks equals 1", + "g_assert_failures equals 0", + "g_task03_pass equals 1" + ], + "evidence_fields": [ + "OOM result", + "hook count", + "assert count", + "PASS" + ], + "prerequisites": [ + "coalesced checkpoint reproducible" + ], + "layout": [ + "final stats", + "OOM result", + "hook", + "PASS" + ], + "commands": [ + "break task03_debug_checkpoint", + "print g_too_large", + "print g_malloc_failed_hooks", + "print g_assert_failures", "print g_task03_pass" ] }, @@ -228,7 +341,8 @@ ], "assertions": [ "pvPortMalloc and vPortFree are present", - "prvInsertBlockIntoFreeList is present" + "prvInsertBlockIntoFreeList is present", + "all eight replay checkpoint symbols are present" ], "evidence_fields": [ "source blob", @@ -252,7 +366,7 @@ "template": "templates/karta-klasyczna.json", "title_block": { "category": "KARTA PRACY · INFORMATYKA", - "prepared_by": "M. Pabiszczak", + "prepared_by": "Mateusz Pabiszczak", "prepared_on": "2026-07-20T00:00:00+02:00", "title": "heap_4: From Linear Cursor to Reusable Blocks", "url": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/aea09ab7-9bfd-5368-8d1b-c8724871c1a7", @@ -328,7 +442,7 @@ "FC01.EK01": { "bloom_level": "Zastosowanie", "label": "Fragmentacja i odzyskanie areny", - "text": "Uczeń odtwarza dwa checkpointy Hazard3 i odróżnia current free, largest free block oraz minimum-ever.", + "text": "Uczeń odtwarza osiem checkpointów Hazard3 i odróżnia current free, largest free block oraz minimum-ever.", "assessment_criteria": [ "FC01.KW01" ] @@ -336,7 +450,7 @@ }, "assessment_criteria": { "FC01.KW01": { - "text": "Model 13 -> 32 bajty; poprawna predykcja dwóch wolnych bloków po free(A,C) i jednego po free(B); final free = initial free; minimum-ever nie rośnie; OOM zwraca NULL; PASS=1.", + "text": "Na RV32 BlockLink_t ma 8 bajtów, lecz 16-bajtowe wyrównanie portu daje xHeapStructSize=16; A/B/C zużywają 48/64/32 bajty; po free(A,C) są dwa wolne bloki, po free(B) jeden; final free = initial free; minimum-ever nie rośnie; OOM zwraca NULL; PASS=1.", "learning_effects": [ "FC01.EN01", "FC01.EK01" @@ -386,7 +500,7 @@ "local": "01", "kind": "EK", "tree_id": "FC01.WE01.TECH.LOCAL.RTOS.01", - "text": "Uczeń odtwarza dwa checkpointy Hazard3 i odróżnia current free, largest free block oraz minimum-ever.", + "text": "Uczeń odtwarza osiem checkpointów Hazard3 i odróżnia current free, largest free block oraz minimum-ever.", "kw": [ { "criterion_ref": "FC01.KW01", @@ -408,11 +522,11 @@ "semantics": "deterministic-replay", "artifact": { "source": "src/tasks/task03_freertos_heap4.c", - "source_git_blob": "a73eb936ad3896bc212fe7fcc1e9918e4430746e", + "source_git_blob": "14ee8fedf1eec198c6b373e2805e07825c3fd0ed", "elf": "build/task03_freertos_heap4/prog.elf", - "hazard3_elf_sha256": "6a7b20ad3447d0877e7ecff39087653e32f4931e2364bdc2ea533bf5d70f7854", + "hazard3_elf_sha256": "91af9f1169945abe4b16037ded2b8047253bf33f4ea6823f46a427ec17d3d4fa", "hazard3_image": "build/task03_freertos_heap4/prog.bin", - "hazard3_image_sha256": "c9d9b45546305671fa6172156fbfc58b90b145fe952e3b7cfe8cce0da0f5e7dd" + "hazard3_image_sha256": "0d943814bb518fefda254f1cdf3771e4104ba1ad9e5f31bb04e672b5015ce31a" }, "targets": { "hazard3-sim": { @@ -422,8 +536,151 @@ } }, "items": { - "task01.fragmented": { + "task01.reset": { "event_id": "E01", + "stop": { + "symbol": "heap4_reset_checkpoint", + "offset": 0 + }, + "verify": { + "expressions": [ + { + "expr": "g_initial_stats.xNumberOfFreeBlocks", + "equals": 1 + }, + { + "expr": "g_initial_stats.xSizeOfLargestFreeBlockInBytes == g_initial_free", + "equals": 1 + }, + { + "expr": "g_initial_free", + "equals": 4080 + } + ] + } + }, + "task01.alloc-a": { + "event_id": "E02", + "stop": { + "symbol": "heap4_alloc_a_checkpoint", + "offset": 0 + }, + "verify": { + "expressions": [ + { + "expr": "g_a != 0", + "equals": 1 + }, + { + "expr": "g_a_aligned", + "equals": 1 + }, + { + "expr": "g_a_consumed", + "equals": 48 + }, + { + "expr": "g_after_a_stats.xNumberOfFreeBlocks", + "equals": 1 + }, + { + "expr": "g_after_a_free", + "equals": 4032 + } + ] + } + }, + "task01.alloc-b": { + "event_id": "E03", + "stop": { + "symbol": "heap4_alloc_b_checkpoint", + "offset": 0 + }, + "verify": { + "expressions": [ + { + "expr": "g_b != 0", + "equals": 1 + }, + { + "expr": "g_b_aligned", + "equals": 1 + }, + { + "expr": "g_b_consumed", + "equals": 64 + }, + { + "expr": "g_after_b_free < g_after_a_free", + "equals": 1 + }, + { + "expr": "g_after_b_free", + "equals": 3968 + } + ] + } + }, + "task01.alloc-c": { + "event_id": "E04", + "stop": { + "symbol": "heap4_alloc_c_checkpoint", + "offset": 0 + }, + "verify": { + "expressions": [ + { + "expr": "g_c != 0", + "equals": 1 + }, + { + "expr": "g_c_aligned", + "equals": 1 + }, + { + "expr": "g_c_consumed", + "equals": 32 + }, + { + "expr": "g_allocations_aligned", + "equals": 1 + }, + { + "expr": "g_after_allocations", + "equals": 3936 + } + ] + } + }, + "task01.free-a": { + "event_id": "E05", + "stop": { + "symbol": "heap4_free_a_checkpoint", + "offset": 0 + }, + "verify": { + "expressions": [ + { + "expr": "g_after_free_a_stats.xNumberOfFreeBlocks", + "equals": 2 + }, + { + "expr": "g_after_free_a == g_after_allocations + g_a_consumed", + "equals": 1 + }, + { + "expr": "g_after_free_a_stats.xAvailableHeapSpaceInBytes > g_after_free_a_stats.xSizeOfLargestFreeBlockInBytes", + "equals": 1 + }, + { + "expr": "g_after_free_a", + "equals": 3984 + } + ] + } + }, + "task01.fragmented": { + "event_id": "E06", "stop": { "symbol": "heap4_fragmented_checkpoint", "offset": 0 @@ -435,20 +692,24 @@ "equals": 2 }, { - "expr": "g_initial_free > g_after_allocations", + "expr": "g_fragmented_free == g_after_free_a + g_c_consumed", "equals": 1 }, { - "expr": "g_allocations_aligned", + "expr": "g_fragmented_stats.xAvailableHeapSpaceInBytes > g_fragmented_stats.xSizeOfLargestFreeBlockInBytes", "equals": 1 + }, + { + "expr": "g_fragmented_free", + "equals": 4016 } ] } }, "task01.coalesced": { - "event_id": "E02", + "event_id": "E07", "stop": { - "symbol": "task03_debug_checkpoint", + "symbol": "heap4_coalesced_checkpoint", "offset": 0 }, "verify": { @@ -461,13 +722,48 @@ "expr": "g_final_free == g_initial_free", "equals": 1 }, + { + "expr": "g_final_stats.xSizeOfLargestFreeBlockInBytes == g_initial_free", + "equals": 1 + }, + { + "expr": "g_minimum_ever_free <= g_after_allocations", + "equals": 1 + }, + { + "expr": "g_final_free", + "equals": 4080 + } + ] + } + }, + "task01.verified": { + "event_id": "E08", + "stop": { + "symbol": "task03_debug_checkpoint", + "offset": 0 + }, + "verify": { + "expressions": [ { "expr": "g_oom_is_null", "equals": 1 }, + { + "expr": "g_malloc_failed_hooks", + "equals": 1 + }, + { + "expr": "g_assert_failures", + "equals": 0 + }, { "expr": "g_task03_pass", "equals": 1 + }, + { + "expr": "g_rv32_layout_expected", + "equals": 1 } ] } @@ -529,9 +825,9 @@ "number": 1, "label": "aplikacja żąda i zwalnia bajty", "mode": "CODE", - "strategy_ref": "code.heap4", + "strategy_ref": "code.boundary", "svg_label": "01", - "code_ref": "src/tasks/task03_freertos_heap4.c:78", + "code_ref": "src/tasks/task03_freertos_heap4.c:127", "description": "Aplikacja zna wyłącznie publiczne API i wskaźniki payloadu.", "evidence": "trzy żądania 24, 40 i 16 bajtów" }, @@ -540,9 +836,9 @@ "number": 2, "label": "FreeRTOS wystawia malloc, free i statystyki", "mode": "CODE", - "strategy_ref": "code.heap4", + "strategy_ref": "code.boundary", "svg_label": "02", - "code_ref": "src/tasks/task03_freertos_heap4.c:90", + "code_ref": "src/tasks/task03_freertos_heap4.c:127", "description": "API oddziela eksperyment od prywatnej listy bloków.", "evidence": "pvPortMalloc, vPortFree, vPortGetHeapStats" }, @@ -553,16 +849,16 @@ "mode": "CODE", "strategy_ref": "code.heap4", "svg_label": "03", - "code_ref": "src/tasks/task03_freertos_heap4.c:70", - "description": "Prywatny mechanizm wybiera, dzieli i scala wolne bloki.", - "evidence": "reset i inicjalizacja listy" + "code_ref": "UPSTREAM.md:1", + "description": "Prywatny mechanizm wybiera, dzieli i scala wolne bloki; strategia otwiera prawdziwy heap_4.c.", + "evidence": "prvHeapInit i prvInsertBlockIntoFreeList" }, { "id": "arena", "number": 4, "label": "ucHeap jest jedną ograniczoną areną", "mode": "CODE", - "strategy_ref": "code.heap4", + "strategy_ref": "code.boundary", "svg_label": "04", "code_ref": "src/tasks/task03_freertos_heap4.c:11", "description": "Metadane i payload znajdują się w tej samej statycznej tablicy.", @@ -614,8 +910,8 @@ "alignment": 1, "split": 1, "address-order": 1, - "right-join": 1, - "left-join": 1 + "left-join": 1, + "right-join": 1 } }, "interactive": { @@ -639,68 +935,78 @@ { "id": "header", "number": 1, - "label": "nagłówek przechowuje next i size", + "label": "nagłówek RV32 przechowuje next i size", "mode": "CODE", - "strategy_ref": "code.model", + "strategy_ref": "code.heap4", "svg_label": "01", - "code_ref": "src/tasks/heap4_model.h:11", - "description": "ModelBlock pokazuje minimalny kontrakt metadanych heap_4.", - "evidence": "dwa słowa metadanych" + "code_ref": "UPSTREAM.md:1", + "description": "Prawdziwy BlockLink_t zawiera wskaźnik i size_t, po 4 bajty na RV32; port wyrównuje nagłówek do 16 bajtów.", + "evidence": "sizeof(BlockLink_t)=8; portBYTE_ALIGNMENT=16; xHeapStructSize=16" }, { "id": "alignment", "number": 2, - "label": "żądanie obejmuje nagłówek i wyrównanie", - "mode": "CODE", - "strategy_ref": "code.model", + "label": "A(24) obejmuje nagłówek i wyrównanie", + "mode": "RUN", + "event_id": "E02", + "strategy_ref": "run.timeline", "svg_label": "02", - "code_ref": "src/tasks/task01_first_fit_split.c:3", - "description": "13 bajtów payloadu zajmuje 32 bajty całego bloku.", - "evidence": "header=16, wanted=32" + "code_ref": "src/tasks/task03_freertos_heap4.c:137", + "snapshot_ref": "task01.alloc-a", + "description": "Różnica licznika wolnych bajtów mierzy cały blok, nie sam payload.", + "evidence": "g_a_consumed = 48; g_a_aligned = 1" }, { "id": "split", "number": 3, "label": "split pozostawia osobny wolny blok", - "mode": "CODE", - "strategy_ref": "code.model", + "mode": "RUN", + "event_id": "E02", + "strategy_ref": "run.timeline", "svg_label": "03", - "code_ref": "src/tasks/task01_first_fit_split.c:43", - "description": "Reszta zachowuje własny nagłówek i trafia na listę wolnych.", - "evidence": "32 + 224 = 256" + "code_ref": "src/tasks/task03_freertos_heap4.c:137", + "snapshot_ref": "task01.alloc-a", + "description": "Po pierwszym first-fit pozostała część areny nadal jest jednym wolnym blokiem.", + "evidence": "free = 4032; free blocks = 1" }, { "id": "address-order", "number": 4, "label": "lista jest uporządkowana rosnącymi adresami", - "mode": "CODE", - "strategy_ref": "code.model", + "mode": "RUN", + "event_id": "E06", + "strategy_ref": "run.fragmented", "svg_label": "04", - "code_ref": "src/tasks/task02_address_order_coalesce.c:29", + "code_ref": "src/tasks/task03_freertos_heap4.c:168", + "snapshot_ref": "task01.fragmented", "description": "Pozycja w liście ujawnia bezpośredniego poprzednika i następnika.", - "evidence": "previous < block < current" - }, - { - "id": "right-join", - "number": 5, - "label": "blok scala się z prawym sąsiadem", - "mode": "CODE", - "strategy_ref": "code.model", - "svg_label": "05", - "code_ref": "src/tasks/task02_address_order_coalesce.c:40", - "description": "Koniec zwalnianego bloku równy adresowi current oznacza ciągłość.", - "evidence": "block + size == current" + "evidence": "g_a < g_b < g_c; dwa wolne obszary" }, { "id": "left-join", + "number": 5, + "label": "heap_4 scala najpierw poprzedni blok", + "mode": "RUN", + "event_id": "E06", + "strategy_ref": "run.coalescing", + "svg_label": "05", + "code_ref": "src/tasks/task03_freertos_heap4.c:173", + "snapshot_ref": "task01.fragmented", + "description": "Replay E06, tymczasowy breakpoint i step w prywatnej funkcji pokazują pierwszy test ciągłości.", + "evidence": "previous + previous.size == inserted" + }, + { + "id": "right-join", "number": 6, - "label": "wynik scala się z lewym sąsiadem", - "mode": "CODE", - "strategy_ref": "code.model", + "label": "następnie scala prawy blok", + "mode": "RUN", + "event_id": "E06", + "strategy_ref": "run.coalescing", "svg_label": "06", - "code_ref": "src/tasks/task02_address_order_coalesce.c:48", - "description": "Drugi test domyka dwustronne scalanie w jeden blok.", - "evidence": "previous + size == block" + "code_ref": "src/tasks/task03_freertos_heap4.c:173", + "snapshot_ref": "task01.fragmented", + "description": "Drugi test wykorzystuje już powiększony lewy blok i domyka scalenie areny.", + "evidence": "merged + merged.size == current" } ] } @@ -715,7 +1021,7 @@ "content_kind": "prose", "asset_page_mode": "one-per-page", "page_orientation": "landscape", - "content_tex": "Uczeń najpierw przewiduje liczbę wolnych bloków. RUN odtwarza dwa stabilne stany: po zwolnieniu A i C oraz po zwolnieniu B.", + "content_tex": "Uczeń przewiduje układ bloków, a następnie odtwarza osiem deterministycznych stanów tego samego przebiegu Hazard3.", "assets": [ { "path": "assets/a5-flow.png", @@ -735,10 +1041,10 @@ "step_tiles": { "reset": 1, "alloc-a": 1, - "alloc-bc": 1, - "free-ac": 1, + "alloc-b": 1, + "alloc-c": 1, + "free-a": 1, "fragmented": 1, - "free-b": 1, "coalesced": 1, "oom": 1 } @@ -765,93 +1071,105 @@ "id": "reset", "number": 1, "label": "reset i inicjalizacja areny", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E01", + "strategy_ref": "run.timeline", "svg_label": "01", - "code_ref": "src/tasks/task03_freertos_heap4.c:70", - "description": "Pierwsze małe żądanie inicjalizuje sentinele i listę.", - "evidence": "initial free = 4080" + "code_ref": "src/tasks/task03_freertos_heap4.c:127", + "snapshot_ref": "task01.reset", + "description": "Próbne żądanie inicjalizuje sentinele; po jego zwolnieniu arena ma jeden blok.", + "evidence": "free = largest = 4080; blocks = 1" }, { "id": "alloc-a", "number": 2, "label": "first-fit przydziela A", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E02", + "strategy_ref": "run.timeline", "svg_label": "02", - "code_ref": "src/tasks/task03_freertos_heap4.c:78", + "code_ref": "src/tasks/task03_freertos_heap4.c:137", + "snapshot_ref": "task01.alloc-a", "description": "Pierwszy wystarczający blok zostaje rozdzielony.", - "evidence": "A payload = 24" + "evidence": "A=24; consumed=48; free=4032" }, { - "id": "alloc-bc", + "id": "alloc-b", "number": 3, - "label": "kolejne split tworzą B i C", - "mode": "CODE", - "strategy_ref": "code.heap4", + "label": "kolejny split tworzy B", + "mode": "RUN", + "event_id": "E03", + "strategy_ref": "run.timeline", "svg_label": "03", - "code_ref": "src/tasks/task03_freertos_heap4.c:79", - "description": "B i C zajmują kolejne fragmenty tego samego wolnego bloku.", - "evidence": "after allocations = 3952" + "code_ref": "src/tasks/task03_freertos_heap4.c:145", + "snapshot_ref": "task01.alloc-b", + "description": "B zajmuje następny fragment tej samej reszty.", + "evidence": "B=40; consumed=64; free=3968" }, { - "id": "free-ac", + "id": "alloc-c", "number": 4, - "label": "zwolnij A i C, pozostaw B", - "mode": "CODE", - "strategy_ref": "code.heap4", + "label": "trzeci split tworzy C", + "mode": "RUN", + "event_id": "E04", + "strategy_ref": "run.timeline", "svg_label": "04", - "code_ref": "src/tasks/task03_freertos_heap4.c:88", - "description": "C scala się z prawą resztą, ale B oddziela ją od A.", - "evidence": "dwa wolne bloki" + "code_ref": "src/tasks/task03_freertos_heap4.c:153", + "snapshot_ref": "task01.alloc-c", + "description": "A, B i C są wyrównane, a za nimi pozostaje jedna wolna reszta.", + "evidence": "C=16; consumed=32; free=3936" + }, + { + "id": "free-a", + "number": 5, + "label": "zwolnij A, pozostaw B i C", + "mode": "RUN", + "event_id": "E05", + "strategy_ref": "run.timeline", + "svg_label": "05", + "code_ref": "src/tasks/task03_freertos_heap4.c:163", + "snapshot_ref": "task01.free-a", + "description": "Wolny A i końcowa reszta są rozdzielone przez B i C.", + "evidence": "blocks=2; free=3984" }, { "id": "fragmented", - "number": 5, - "label": "checkpoint fragmentacji", - "mode": "RUN", - "event_id": "E01", - "strategy_ref": "run.fragmented", - "svg_label": "05", - "code_ref": "src/tasks/task03_freertos_heap4.c:91", - "snapshot_ref": "task01.fragmented", - "description": "GDB zatrzymuje program przy dwóch wolnych blokach.", - "evidence": "xNumberOfFreeBlocks = 2" - }, - { - "id": "free-b", "number": 6, - "label": "zwolnij B między dwoma sąsiadami", - "mode": "CODE", - "strategy_ref": "code.heap4", + "label": "zwolnij C, pozostaw B", + "mode": "RUN", + "event_id": "E06", + "strategy_ref": "run.fragmented", "svg_label": "06", - "code_ref": "src/tasks/task03_freertos_heap4.c:93", - "description": "Wstawienie adresowe umożliwia dwa testy ciągłości.", - "evidence": "A + B + C + reszta są ciągłe" + "code_ref": "src/tasks/task03_freertos_heap4.c:168", + "snapshot_ref": "task01.fragmented", + "description": "C scala się z prawą resztą, ale B nadal rozdziela dwa wolne obszary.", + "evidence": "blocks=2; free=4016; free>largest" }, { "id": "coalesced", "number": 7, - "label": "arena wraca do jednego bloku", + "label": "zwolnij B i scal oba sąsiednie bloki", "mode": "RUN", - "event_id": "E02", + "event_id": "E07", "strategy_ref": "run.coalesced", "svg_label": "07", - "code_ref": "src/tasks/task03_freertos_heap4.c:96", + "code_ref": "src/tasks/task03_freertos_heap4.c:173", "snapshot_ref": "task01.coalesced", - "description": "Finalne statystyki dowodzą pełnego odzyskania areny.", - "evidence": "final free = initial free; blocks = 1" + "description": "Scalenie lewego, a potem prawego sąsiada przywraca jeden blok.", + "evidence": "free=largest=initial=4080; blocks=1" }, { "id": "oom", "number": 8, "label": "zbyt duże żądanie kończy się NULL", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E08", + "strategy_ref": "run.verified", "svg_label": "08", - "code_ref": "src/tasks/task03_freertos_heap4.c:98", + "code_ref": "src/tasks/task03_freertos_heap4.c:179", + "snapshot_ref": "task01.verified", "description": "Kontrolowany OOM nie narusza listy i wywołuje hook dokładnie raz.", - "evidence": "NULL, hooks=1, asserts=0" + "evidence": "NULL; hooks=1; asserts=0; PASS=1" } ] } @@ -913,33 +1231,37 @@ "id": "free", "number": 1, "label": "wolny blok należy do listy", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E01", + "strategy_ref": "run.timeline", "svg_label": "01", - "code_ref": "src/tasks/task03_freertos_heap4.c:70", + "code_ref": "src/tasks/task03_freertos_heap4.c:127", + "snapshot_ref": "task01.reset", "description": "Stan początkowy zawiera jeden największy wolny blok.", - "evidence": "initial free = largest free" + "evidence": "initial free = largest free = 4080" }, { "id": "allocated", "number": 2, "label": "przydzielony blok znika z listy wolnych", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E04", + "strategy_ref": "run.timeline", "svg_label": "02", - "code_ref": "src/tasks/task03_freertos_heap4.c:78", + "code_ref": "src/tasks/task03_freertos_heap4.c:153", + "snapshot_ref": "task01.alloc-c", "description": "Payload jest wyrównany, a bieżąca wolna pamięć maleje.", - "evidence": "all payload pointers aligned" + "evidence": "all payload pointers aligned; free=3936" }, { "id": "fragmented-state", "number": 3, "label": "dwa wolne bloki nie są jednym dużym blokiem", "mode": "RUN", - "event_id": "E01", + "event_id": "E06", "strategy_ref": "run.fragmented", "svg_label": "03", - "code_ref": "src/tasks/task03_freertos_heap4.c:90", + "code_ref": "src/tasks/task03_freertos_heap4.c:168", "snapshot_ref": "task01.fragmented", "description": "Suma wolnego miejsca nie gwarantuje jednego dużego przydziału.", "evidence": "free blocks = 2" @@ -949,10 +1271,10 @@ "number": 4, "label": "scalenie przywraca jeden największy blok", "mode": "RUN", - "event_id": "E02", + "event_id": "E07", "strategy_ref": "run.coalesced", "svg_label": "04", - "code_ref": "src/tasks/task03_freertos_heap4.c:94", + "code_ref": "src/tasks/task03_freertos_heap4.c:173", "snapshot_ref": "task01.coalesced", "description": "Current free i largest wracają do wartości początkowej.", "evidence": "free blocks = 1" @@ -961,10 +1283,12 @@ "id": "minimum-ever", "number": 5, "label": "minimum-ever zachowuje najniższy poziom", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E08", + "strategy_ref": "run.verified", "svg_label": "05", - "code_ref": "src/tasks/task03_freertos_heap4.c:95", + "code_ref": "src/tasks/task03_freertos_heap4.c:179", + "snapshot_ref": "task01.verified", "description": "Historyczne minimum nie zwiększa się po odzyskaniu pamięci.", "evidence": "minimum-ever <= after allocations" } @@ -1017,7 +1341,7 @@ "block": { "id": "a7", "label": "A7 RUNTIME", - "description": "Ten sam artefakt łączy źródło, symbole ELF, dwa checkpointy, pamięć ucHeap i końcowe asercje." + "description": "Ten sam artefakt łączy źródło, symbole ELF, osiem checkpointów, pamięć ucHeap i końcowe asercje." }, "phases": [ { @@ -1031,7 +1355,7 @@ "mode": "CODE", "strategy_ref": "code.identity", "svg_label": "01", - "code_ref": "src/tasks/task03_freertos_heap4.c:62", + "code_ref": "src/tasks/task03_freertos_heap4.c:127", "description": "Blob źródła jest częścią tożsamości karty.", "evidence": "source git blob" }, @@ -1051,22 +1375,24 @@ "number": 3, "label": "checkpoint pokazuje dwa wolne bloki", "mode": "RUN", - "event_id": "E01", + "event_id": "E06", "strategy_ref": "run.fragmented", "svg_label": "03", - "code_ref": "src/tasks/task03_freertos_heap4.c:91", + "code_ref": "src/tasks/task03_freertos_heap4.c:168", "snapshot_ref": "task01.fragmented", "description": "Neovim, GDB i pamięć zatrzymują się na tym samym stanie.", - "evidence": "blocks=2 and aligned=1" + "evidence": "blocks=2 and free>largest" }, { "id": "memory", "number": 4, "label": "ucHeap ujawnia nagłówki i payload", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E06", + "strategy_ref": "run.fragmented", "svg_label": "04", "code_ref": "src/tasks/task03_freertos_heap4.c:11", + "snapshot_ref": "task01.fragmented", "description": "Widok bajtów łączy diagram z realnym układem areny.", "evidence": "aligned arena and in-band metadata" }, @@ -1075,11 +1401,11 @@ "number": 5, "label": "checkpoint końcowy dowodzi odzyskania", "mode": "RUN", - "event_id": "E02", - "strategy_ref": "run.coalesced", + "event_id": "E08", + "strategy_ref": "run.verified", "svg_label": "05", - "code_ref": "src/tasks/task03_freertos_heap4.c:111", - "snapshot_ref": "task01.coalesced", + "code_ref": "src/tasks/task03_freertos_heap4.c:179", + "snapshot_ref": "task01.verified", "description": "Jedna ramka łączy stats, OOM, hook i PASS.", "evidence": "final=initial, blocks=1, pass=1" } @@ -1103,8 +1429,8 @@ "task01": { "title": "Predict and prove reusable heap_4 blocks", "uuid": "aea09ab7-9bfd-5368-8d1b-c8724871c1a7", - "prompt_tex": "Przewidź układ bloków po alloc A/B/C, następnie po free(A,C) i free(B). Odtwórz oba checkpointy i udowodnij, że arena została scalona bez utraty minimum-ever.", - "criterion": "Model 13 -> 32 bajty; poprawna predykcja dwóch wolnych bloków po free(A,C) i jednego po free(B); final free = initial free; minimum-ever nie rośnie; OOM zwraca NULL; PASS=1.", + "prompt_tex": "Przewidź układ bloków po alloc A/B/C, następnie po free(A), free(C) i free(B). Odtwórz checkpointy E01--E08 i udowodnij, że arena została scalona bez utraty minimum-ever.", + "criterion": "Na RV32 BlockLink_t ma 8 bajtów, lecz 16-bajtowe wyrównanie portu daje xHeapStructSize=16; A/B/C zużywają 48/64/32 bajty; po free(A,C) są dwa wolne bloki, po free(B) jeden; final free = initial free; minimum-ever nie rośnie; OOM zwraca NULL; PASS=1.", "conclusion_tex": "heap\\_4 odzyskuje pamięć dzięki metadanym w arenie, adresowo uporządkowanej liście i scalaniu sąsiadów. Suma wolnych bajtów nie zastępuje informacji o największym bloku, a minimum-ever jest historią, nie bieżącym stanem.", "flow": [ { @@ -1115,8 +1441,8 @@ "steps": [ { "id": "size", - "title": "Policz rozmiar bloku.", - "content_tex": "Dodaj nagłówek do 13 bajtów i wyrównaj wynik do ośmiu." + "title": "Policz rozmiary całych bloków.", + "content_tex": "Rozróżnij surowy BlockLink\\_t (8 bajtów) od xHeapStructSize (16 bajtów), dodaj nagłówek do żądań 24, 40 i 16 bajtów, a następnie wyrównaj wynik do 16." }, { "id": "list", @@ -1129,17 +1455,22 @@ "kind": "block", "id": "replay", "title": "B — replay Hazard3", - "content_tex": "Powiąż diagram z dwoma deterministycznymi checkpointami.", + "content_tex": "Powiąż każdy stan diagramu z deterministycznym checkpointem E01--E08.", "steps": [ { - "id": "fragmented", - "title": "Sprawdź E01.", - "content_tex": "Porównaj liczbę wolnych bloków, największy blok i bieżące wolne bajty." + "id": "allocate", + "title": "Sprawdź E01--E04.", + "content_tex": "Potwierdź wartości 4080, 4032, 3968 i 3936 oraz zużycie 48/64/32 bajtów." }, { - "id": "coalesced", - "title": "Sprawdź E02.", - "content_tex": "Udowodnij pełne scalenie, zachowanie minimum-ever i kontrolowany OOM." + "id": "release", + "title": "Sprawdź E05--E07.", + "content_tex": "Porównaj liczbę wolnych bloków i udowodnij scalenie poprzedniego, a potem następnego sąsiada." + }, + { + "id": "verify", + "title": "Sprawdź E08.", + "content_tex": "Udowodnij zachowanie minimum-ever, kontrolowany OOM, brak asercji i PASS=1." } ] }, diff --git a/json/card_spec.json b/json/card_spec.json index 74ca110..383a9dc 100644 --- a/json/card_spec.json +++ b/json/card_spec.json @@ -22,7 +22,7 @@ { "id": "A2", "label": "STRUCTURE", - "subtitle": "headers and address order", + "subtitle": "RV32 header, split and address order", "status": "enabled" }, { @@ -37,7 +37,7 @@ "label": "APPLICATION", "subtitle": "experiment is already explicit", "status": "unavailable", - "reason": "The concrete A/B/C allocation experiment is completely represented by A5 and its two runtime checkpoints." + "reason": "The concrete A/B/C allocation experiment is completely represented by the eight-state replay in A5." }, { "id": "A5", @@ -72,50 +72,40 @@ }, "strategies": [ { - "id": "code.model", + "id": "code.boundary", "kind": "code", + "expected_observations": [ + "application code calls only the public FreeRTOS allocation API", + "the selected heap implementation is linked below that API" + ], + "assertions": [ + "the application never edits allocator metadata", + "Hazard3 observes the same ucHeap object named by the ELF" + ], + "evidence_fields": [ + "code_ref", + "public symbol", + "arena symbol", + "target profile" + ], "prerequisites": [ "K&R 5.4 linear allocator complete" ], "layout": [ - "header", - "payload", - "remainder", - "address-ordered list" + "application", + "FreeRTOS API", + "heap_4", + "ucHeap", + "Hazard3" ], "commands": [ - "rg -n 'ModelBlock|align_up|insert_and_coalesce' src/tasks" - ], - "expected_observations": [ - "requested size includes header and alignment", - "free list is ordered by block address" - ], - "assertions": [ - "payload begins after the header", - "split preserves the total arena size" - ], - "evidence_fields": [ - "code_ref", - "header bytes", - "wanted bytes", - "block address" + "rg -n 'pvPortMalloc|vPortFree|vPortGetHeapStats|ucHeap' src/tasks/task03_freertos_heap4.c", + "rg -n 'TASK03_KERNEL_SOURCES|HEAP4_SOURCE' Makefile" ] }, { "id": "code.heap4", "kind": "code", - "prerequisites": [ - "FreeRTOS-Kernel V11.3.0 available" - ], - "layout": [ - "ucHeap", - "BlockLink_t", - "xStart", - "pxEnd" - ], - "commands": [ - "rg -n 'BlockLink_t|prvInsertBlockIntoFreeList|pvPortMalloc|vPortFree' vendor/FreeRTOS-Kernel/portable/MemMang/heap_4.c" - ], "expected_observations": [ "heap_4 keeps metadata inside the arena", "free blocks form one address-ordered intrusive list" @@ -129,26 +119,60 @@ "list link", "block size", "arena address" + ], + "prerequisites": [ + "FreeRTOS-Kernel V11.3.0 available" + ], + "layout": [ + "ucHeap", + "BlockLink_t", + "xStart", + "pxEnd" + ], + "commands": [ + "rg -n 'BlockLink_t|prvHeapInit|prvInsertBlockIntoFreeList|pvPortMalloc|vPortFree' ${FREERTOS_KERNEL_PATH:-/opt/FreeRTOS-Kernel}/portable/MemMang/heap_4.c" ] }, { - "id": "run.fragmented", + "id": "run.timeline", "kind": "run", + "expected_observations": [ + "every checkpoint is reached from a clean reset with the same ELF", + "free bytes change by the aligned whole-block size, not by payload alone" + ], + "assertions": [ + "A, B and C are aligned", + "the free-byte sequence is strictly decreasing during allocation" + ], + "evidence_fields": [ + "payload pointer", + "consumed bytes", + "available bytes", + "free-list statistics" + ], "prerequisites": [ "clean Hazard3 RAM", "task03 image loaded" ], "layout": [ - "source", - "free-list stats", - "ucHeap memory", - "registers" + "current checkpoint", + "source call", + "heap statistics", + "ucHeap memory" ], "commands": [ - "break heap4_fragmented_checkpoint", - "print g_fragmented_stats", - "x/64bx ucHeap" - ], + "print g_initial_free", + "print g_after_a_free", + "print g_after_b_free", + "print g_after_allocations", + "print g_a_consumed", + "print g_b_consumed", + "print g_c_consumed" + ] + }, + { + "id": "run.fragmented", + "kind": "run", "expected_observations": [ "A and C are free while B remains allocated", "the free list contains two blocks" @@ -162,11 +186,76 @@ "largest block", "free bytes", "heap bytes" + ], + "prerequisites": [ + "clean Hazard3 RAM", + "task03 image loaded" + ], + "layout": [ + "source", + "free-list stats", + "ucHeap memory", + "registers" + ], + "commands": [ + "break heap4_fragmented_checkpoint", + "print g_fragmented_stats", + "print g_fragmented_free", + "x/96bx ucHeap" + ] + }, + { + "id": "run.coalescing", + "kind": "run", + "expected_observations": [ + "the replay stops after free(C), immediately before free(B)", + "inside prvInsertBlockIntoFreeList the previous block is merged before the next block" + ], + "assertions": [ + "pxIterator < pxBlockToInsert < pxIterator->pxNextFreeBlock", + "the left adjacency test is evaluated before the right adjacency test" + ], + "evidence_fields": [ + "pxIterator", + "pxBlockToInsert", + "left end address", + "right start address" + ], + "prerequisites": [ + "task01.fragmented replay ready" + ], + "layout": [ + "application call vPortFree(g_b)", + "prvInsertBlockIntoFreeList", + "free-list links", + "ucHeap addresses" + ], + "commands": [ + "tbreak prvInsertBlockIntoFreeList", + "continue", + "print pxIterator", + "print pxBlockToInsert", + "next" ] }, { "id": "run.coalesced", "kind": "run", + "expected_observations": [ + "freeing B joins both neighbours", + "the arena returns to one reusable block" + ], + "assertions": [ + "final free equals initial free", + "one free block is also the largest block", + "minimum-ever does not rise after free" + ], + "evidence_fields": [ + "final free", + "largest block", + "minimum-ever", + "free blocks" + ], "prerequisites": [ "fragmented checkpoint reached" ], @@ -177,30 +266,66 @@ "PASS" ], "commands": [ - "break task03_debug_checkpoint", + "break heap4_coalesced_checkpoint", "print g_final_stats", - "print g_task03_pass" - ], + "print g_final_free", + "print g_minimum_ever_free" + ] + }, + { + "id": "run.verified", + "kind": "run", "expected_observations": [ - "freeing B joins both neighbours", - "the arena returns to one reusable block" + "the oversized request returns NULL", + "the malloc-failed hook runs once without corrupting the recovered arena" ], "assertions": [ - "final free equals initial free", - "minimum-ever does not rise after free", - "oversized allocation returns NULL and calls the hook once" + "g_oom_is_null equals 1", + "g_malloc_failed_hooks equals 1", + "g_assert_failures equals 0", + "g_task03_pass equals 1" ], "evidence_fields": [ - "final free", - "largest block", - "minimum-ever", - "OOM hook", + "OOM result", + "hook count", + "assert count", "PASS" + ], + "prerequisites": [ + "coalesced checkpoint reproducible" + ], + "layout": [ + "final stats", + "OOM result", + "hook", + "PASS" + ], + "commands": [ + "break task03_debug_checkpoint", + "print g_too_large", + "print g_malloc_failed_hooks", + "print g_assert_failures", + "print g_task03_pass" ] }, { "id": "code.identity", "kind": "code", + "expected_observations": [ + "upstream heap_4 symbols are linked", + "checkpoint and ucHeap symbols remain observable" + ], + "assertions": [ + "pvPortMalloc and vPortFree are present", + "prvInsertBlockIntoFreeList is present", + "all eight replay checkpoint symbols are present" + ], + "evidence_fields": [ + "source blob", + "ELF SHA256", + "image SHA256", + "symbol" + ], "prerequisites": [ "built ELF" ], @@ -211,26 +336,155 @@ ], "commands": [ "tests/check_task03_elf.sh build/task03_freertos_heap4/prog.elf" - ], - "expected_observations": [ - "upstream heap_4 symbols are linked", - "checkpoint and ucHeap symbols remain observable" - ], - "assertions": [ - "pvPortMalloc and vPortFree are present", - "prvInsertBlockIntoFreeList is present" - ], - "evidence_fields": [ - "source blob", - "ELF SHA256", - "image SHA256", - "symbol" ] } ], "checkpoints": { - "task01.fragmented": { + "task01.reset": { "event_id": "E01", + "stop": { + "symbol": "heap4_reset_checkpoint", + "offset": 0 + }, + "verify": { + "expressions": [ + { + "expr": "g_initial_stats.xNumberOfFreeBlocks", + "equals": 1 + }, + { + "expr": "g_initial_stats.xSizeOfLargestFreeBlockInBytes == g_initial_free", + "equals": 1 + }, + { + "expr": "g_initial_free", + "equals": 4080 + } + ] + } + }, + "task01.alloc-a": { + "event_id": "E02", + "stop": { + "symbol": "heap4_alloc_a_checkpoint", + "offset": 0 + }, + "verify": { + "expressions": [ + { + "expr": "g_a != 0", + "equals": 1 + }, + { + "expr": "g_a_aligned", + "equals": 1 + }, + { + "expr": "g_a_consumed", + "equals": 48 + }, + { + "expr": "g_after_a_stats.xNumberOfFreeBlocks", + "equals": 1 + }, + { + "expr": "g_after_a_free", + "equals": 4032 + } + ] + } + }, + "task01.alloc-b": { + "event_id": "E03", + "stop": { + "symbol": "heap4_alloc_b_checkpoint", + "offset": 0 + }, + "verify": { + "expressions": [ + { + "expr": "g_b != 0", + "equals": 1 + }, + { + "expr": "g_b_aligned", + "equals": 1 + }, + { + "expr": "g_b_consumed", + "equals": 64 + }, + { + "expr": "g_after_b_free < g_after_a_free", + "equals": 1 + }, + { + "expr": "g_after_b_free", + "equals": 3968 + } + ] + } + }, + "task01.alloc-c": { + "event_id": "E04", + "stop": { + "symbol": "heap4_alloc_c_checkpoint", + "offset": 0 + }, + "verify": { + "expressions": [ + { + "expr": "g_c != 0", + "equals": 1 + }, + { + "expr": "g_c_aligned", + "equals": 1 + }, + { + "expr": "g_c_consumed", + "equals": 32 + }, + { + "expr": "g_allocations_aligned", + "equals": 1 + }, + { + "expr": "g_after_allocations", + "equals": 3936 + } + ] + } + }, + "task01.free-a": { + "event_id": "E05", + "stop": { + "symbol": "heap4_free_a_checkpoint", + "offset": 0 + }, + "verify": { + "expressions": [ + { + "expr": "g_after_free_a_stats.xNumberOfFreeBlocks", + "equals": 2 + }, + { + "expr": "g_after_free_a == g_after_allocations + g_a_consumed", + "equals": 1 + }, + { + "expr": "g_after_free_a_stats.xAvailableHeapSpaceInBytes > g_after_free_a_stats.xSizeOfLargestFreeBlockInBytes", + "equals": 1 + }, + { + "expr": "g_after_free_a", + "equals": 3984 + } + ] + } + }, + "task01.fragmented": { + "event_id": "E06", "stop": { "symbol": "heap4_fragmented_checkpoint", "offset": 0 @@ -242,20 +496,24 @@ "equals": 2 }, { - "expr": "g_initial_free > g_after_allocations", + "expr": "g_fragmented_free == g_after_free_a + g_c_consumed", "equals": 1 }, { - "expr": "g_allocations_aligned", + "expr": "g_fragmented_stats.xAvailableHeapSpaceInBytes > g_fragmented_stats.xSizeOfLargestFreeBlockInBytes", "equals": 1 + }, + { + "expr": "g_fragmented_free", + "equals": 4016 } ] } }, "task01.coalesced": { - "event_id": "E02", + "event_id": "E07", "stop": { - "symbol": "task03_debug_checkpoint", + "symbol": "heap4_coalesced_checkpoint", "offset": 0 }, "verify": { @@ -268,13 +526,48 @@ "expr": "g_final_free == g_initial_free", "equals": 1 }, + { + "expr": "g_final_stats.xSizeOfLargestFreeBlockInBytes == g_initial_free", + "equals": 1 + }, + { + "expr": "g_minimum_ever_free <= g_after_allocations", + "equals": 1 + }, + { + "expr": "g_final_free", + "equals": 4080 + } + ] + } + }, + "task01.verified": { + "event_id": "E08", + "stop": { + "symbol": "task03_debug_checkpoint", + "offset": 0 + }, + "verify": { + "expressions": [ { "expr": "g_oom_is_null", "equals": 1 }, + { + "expr": "g_malloc_failed_hooks", + "equals": 1 + }, + { + "expr": "g_assert_failures", + "equals": 0 + }, { "expr": "g_task03_pass", "equals": 1 + }, + { + "expr": "g_rv32_layout_expected", + "equals": 1 } ] } @@ -306,9 +599,9 @@ "number": 1, "label": "aplikacja żąda i zwalnia bajty", "mode": "CODE", - "strategy_ref": "code.heap4", + "strategy_ref": "code.boundary", "svg_label": "01", - "code_ref": "src/tasks/task03_freertos_heap4.c:78", + "code_ref": "src/tasks/task03_freertos_heap4.c:127", "description": "Aplikacja zna wyłącznie publiczne API i wskaźniki payloadu.", "evidence": "trzy żądania 24, 40 i 16 bajtów" }, @@ -317,9 +610,9 @@ "number": 2, "label": "FreeRTOS wystawia malloc, free i statystyki", "mode": "CODE", - "strategy_ref": "code.heap4", + "strategy_ref": "code.boundary", "svg_label": "02", - "code_ref": "src/tasks/task03_freertos_heap4.c:90", + "code_ref": "src/tasks/task03_freertos_heap4.c:127", "description": "API oddziela eksperyment od prywatnej listy bloków.", "evidence": "pvPortMalloc, vPortFree, vPortGetHeapStats" }, @@ -330,16 +623,16 @@ "mode": "CODE", "strategy_ref": "code.heap4", "svg_label": "03", - "code_ref": "src/tasks/task03_freertos_heap4.c:70", - "description": "Prywatny mechanizm wybiera, dzieli i scala wolne bloki.", - "evidence": "reset i inicjalizacja listy" + "code_ref": "UPSTREAM.md:1", + "description": "Prywatny mechanizm wybiera, dzieli i scala wolne bloki; strategia otwiera prawdziwy heap_4.c.", + "evidence": "prvHeapInit i prvInsertBlockIntoFreeList" }, { "id": "arena", "number": 4, "label": "ucHeap jest jedną ograniczoną areną", "mode": "CODE", - "strategy_ref": "code.heap4", + "strategy_ref": "code.boundary", "svg_label": "04", "code_ref": "src/tasks/task03_freertos_heap4.c:11", "description": "Metadane i payload znajdują się w tej samej statycznej tablicy.", @@ -385,68 +678,78 @@ { "id": "header", "number": 1, - "label": "nagłówek przechowuje next i size", + "label": "nagłówek RV32 przechowuje next i size", "mode": "CODE", - "strategy_ref": "code.model", + "strategy_ref": "code.heap4", "svg_label": "01", - "code_ref": "src/tasks/heap4_model.h:11", - "description": "ModelBlock pokazuje minimalny kontrakt metadanych heap_4.", - "evidence": "dwa słowa metadanych" + "code_ref": "UPSTREAM.md:1", + "description": "Prawdziwy BlockLink_t zawiera wskaźnik i size_t, po 4 bajty na RV32; port wyrównuje nagłówek do 16 bajtów.", + "evidence": "sizeof(BlockLink_t)=8; portBYTE_ALIGNMENT=16; xHeapStructSize=16" }, { "id": "alignment", "number": 2, - "label": "żądanie obejmuje nagłówek i wyrównanie", - "mode": "CODE", - "strategy_ref": "code.model", + "label": "A(24) obejmuje nagłówek i wyrównanie", + "mode": "RUN", + "event_id": "E02", + "strategy_ref": "run.timeline", "svg_label": "02", - "code_ref": "src/tasks/task01_first_fit_split.c:3", - "description": "13 bajtów payloadu zajmuje 32 bajty całego bloku.", - "evidence": "header=16, wanted=32" + "code_ref": "src/tasks/task03_freertos_heap4.c:137", + "snapshot_ref": "task01.alloc-a", + "description": "Różnica licznika wolnych bajtów mierzy cały blok, nie sam payload.", + "evidence": "g_a_consumed = 48; g_a_aligned = 1" }, { "id": "split", "number": 3, "label": "split pozostawia osobny wolny blok", - "mode": "CODE", - "strategy_ref": "code.model", + "mode": "RUN", + "event_id": "E02", + "strategy_ref": "run.timeline", "svg_label": "03", - "code_ref": "src/tasks/task01_first_fit_split.c:43", - "description": "Reszta zachowuje własny nagłówek i trafia na listę wolnych.", - "evidence": "32 + 224 = 256" + "code_ref": "src/tasks/task03_freertos_heap4.c:137", + "snapshot_ref": "task01.alloc-a", + "description": "Po pierwszym first-fit pozostała część areny nadal jest jednym wolnym blokiem.", + "evidence": "free = 4032; free blocks = 1" }, { "id": "address-order", "number": 4, "label": "lista jest uporządkowana rosnącymi adresami", - "mode": "CODE", - "strategy_ref": "code.model", + "mode": "RUN", + "event_id": "E06", + "strategy_ref": "run.fragmented", "svg_label": "04", - "code_ref": "src/tasks/task02_address_order_coalesce.c:29", + "code_ref": "src/tasks/task03_freertos_heap4.c:168", + "snapshot_ref": "task01.fragmented", "description": "Pozycja w liście ujawnia bezpośredniego poprzednika i następnika.", - "evidence": "previous < block < current" - }, - { - "id": "right-join", - "number": 5, - "label": "blok scala się z prawym sąsiadem", - "mode": "CODE", - "strategy_ref": "code.model", - "svg_label": "05", - "code_ref": "src/tasks/task02_address_order_coalesce.c:40", - "description": "Koniec zwalnianego bloku równy adresowi current oznacza ciągłość.", - "evidence": "block + size == current" + "evidence": "g_a < g_b < g_c; dwa wolne obszary" }, { "id": "left-join", + "number": 5, + "label": "heap_4 scala najpierw poprzedni blok", + "mode": "RUN", + "event_id": "E06", + "strategy_ref": "run.coalescing", + "svg_label": "05", + "code_ref": "src/tasks/task03_freertos_heap4.c:173", + "snapshot_ref": "task01.fragmented", + "description": "Replay E06, tymczasowy breakpoint i step w prywatnej funkcji pokazują pierwszy test ciągłości.", + "evidence": "previous + previous.size == inserted" + }, + { + "id": "right-join", "number": 6, - "label": "wynik scala się z lewym sąsiadem", - "mode": "CODE", - "strategy_ref": "code.model", + "label": "następnie scala prawy blok", + "mode": "RUN", + "event_id": "E06", + "strategy_ref": "run.coalescing", "svg_label": "06", - "code_ref": "src/tasks/task02_address_order_coalesce.c:48", - "description": "Drugi test domyka dwustronne scalanie w jeden blok.", - "evidence": "previous + size == block" + "code_ref": "src/tasks/task03_freertos_heap4.c:173", + "snapshot_ref": "task01.fragmented", + "description": "Drugi test wykorzystuje już powiększony lewy blok i domyka scalenie areny.", + "evidence": "merged + merged.size == current" } ] } @@ -461,7 +764,7 @@ "order": 50, "orientation": "landscape", "description": "Jeden przebieg A/B/C przechodzi od pustej areny przez trzy przydziały i dwa wolne obszary do ponownie scalonego bloku.", - "content_tex": "Uczeń najpierw przewiduje liczbę wolnych bloków. RUN odtwarza dwa stabilne stany: po zwolnieniu A i C oraz po zwolnieniu B.", + "content_tex": "Uczeń przewiduje układ bloków, a następnie odtwarza osiem deterministycznych stanów tego samego przebiegu Hazard3.", "assets": [ { "stem": "a5-flow", @@ -469,7 +772,6 @@ "caption": "A5 FLOW — inicjalizacja, A/B/C, fragmentacja, dwustronne scalenie i OOM.", "label": "fig:a5-flow", "alt": "A5 · pełny przebieg heap_4", - "diagram_kind": "sequence", "phases": [ { "id": "replay", @@ -479,97 +781,110 @@ "id": "reset", "number": 1, "label": "reset i inicjalizacja areny", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E01", + "strategy_ref": "run.timeline", "svg_label": "01", - "code_ref": "src/tasks/task03_freertos_heap4.c:70", - "description": "Pierwsze małe żądanie inicjalizuje sentinele i listę.", - "evidence": "initial free = 4080" + "code_ref": "src/tasks/task03_freertos_heap4.c:127", + "snapshot_ref": "task01.reset", + "description": "Próbne żądanie inicjalizuje sentinele; po jego zwolnieniu arena ma jeden blok.", + "evidence": "free = largest = 4080; blocks = 1" }, { "id": "alloc-a", "number": 2, "label": "first-fit przydziela A", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E02", + "strategy_ref": "run.timeline", "svg_label": "02", - "code_ref": "src/tasks/task03_freertos_heap4.c:78", + "code_ref": "src/tasks/task03_freertos_heap4.c:137", + "snapshot_ref": "task01.alloc-a", "description": "Pierwszy wystarczający blok zostaje rozdzielony.", - "evidence": "A payload = 24" + "evidence": "A=24; consumed=48; free=4032" }, { - "id": "alloc-bc", + "id": "alloc-b", "number": 3, - "label": "kolejne split tworzą B i C", - "mode": "CODE", - "strategy_ref": "code.heap4", + "label": "kolejny split tworzy B", + "mode": "RUN", + "event_id": "E03", + "strategy_ref": "run.timeline", "svg_label": "03", - "code_ref": "src/tasks/task03_freertos_heap4.c:79", - "description": "B i C zajmują kolejne fragmenty tego samego wolnego bloku.", - "evidence": "after allocations = 3952" + "code_ref": "src/tasks/task03_freertos_heap4.c:145", + "snapshot_ref": "task01.alloc-b", + "description": "B zajmuje następny fragment tej samej reszty.", + "evidence": "B=40; consumed=64; free=3968" }, { - "id": "free-ac", + "id": "alloc-c", "number": 4, - "label": "zwolnij A i C, pozostaw B", - "mode": "CODE", - "strategy_ref": "code.heap4", + "label": "trzeci split tworzy C", + "mode": "RUN", + "event_id": "E04", + "strategy_ref": "run.timeline", "svg_label": "04", - "code_ref": "src/tasks/task03_freertos_heap4.c:88", - "description": "C scala się z prawą resztą, ale B oddziela ją od A.", - "evidence": "dwa wolne bloki" + "code_ref": "src/tasks/task03_freertos_heap4.c:153", + "snapshot_ref": "task01.alloc-c", + "description": "A, B i C są wyrównane, a za nimi pozostaje jedna wolna reszta.", + "evidence": "C=16; consumed=32; free=3936" + }, + { + "id": "free-a", + "number": 5, + "label": "zwolnij A, pozostaw B i C", + "mode": "RUN", + "event_id": "E05", + "strategy_ref": "run.timeline", + "svg_label": "05", + "code_ref": "src/tasks/task03_freertos_heap4.c:163", + "snapshot_ref": "task01.free-a", + "description": "Wolny A i końcowa reszta są rozdzielone przez B i C.", + "evidence": "blocks=2; free=3984" }, { "id": "fragmented", - "number": 5, - "label": "checkpoint fragmentacji", - "mode": "RUN", - "event_id": "E01", - "strategy_ref": "run.fragmented", - "svg_label": "05", - "code_ref": "src/tasks/task03_freertos_heap4.c:91", - "snapshot_ref": "task01.fragmented", - "description": "GDB zatrzymuje program przy dwóch wolnych blokach.", - "evidence": "xNumberOfFreeBlocks = 2" - }, - { - "id": "free-b", "number": 6, - "label": "zwolnij B między dwoma sąsiadami", - "mode": "CODE", - "strategy_ref": "code.heap4", + "label": "zwolnij C, pozostaw B", + "mode": "RUN", + "event_id": "E06", + "strategy_ref": "run.fragmented", "svg_label": "06", - "code_ref": "src/tasks/task03_freertos_heap4.c:93", - "description": "Wstawienie adresowe umożliwia dwa testy ciągłości.", - "evidence": "A + B + C + reszta są ciągłe" + "code_ref": "src/tasks/task03_freertos_heap4.c:168", + "snapshot_ref": "task01.fragmented", + "description": "C scala się z prawą resztą, ale B nadal rozdziela dwa wolne obszary.", + "evidence": "blocks=2; free=4016; free>largest" }, { "id": "coalesced", "number": 7, - "label": "arena wraca do jednego bloku", + "label": "zwolnij B i scal oba sąsiednie bloki", "mode": "RUN", - "event_id": "E02", + "event_id": "E07", "strategy_ref": "run.coalesced", "svg_label": "07", - "code_ref": "src/tasks/task03_freertos_heap4.c:96", + "code_ref": "src/tasks/task03_freertos_heap4.c:173", "snapshot_ref": "task01.coalesced", - "description": "Finalne statystyki dowodzą pełnego odzyskania areny.", - "evidence": "final free = initial free; blocks = 1" + "description": "Scalenie lewego, a potem prawego sąsiada przywraca jeden blok.", + "evidence": "free=largest=initial=4080; blocks=1" }, { "id": "oom", "number": 8, "label": "zbyt duże żądanie kończy się NULL", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E08", + "strategy_ref": "run.verified", "svg_label": "08", - "code_ref": "src/tasks/task03_freertos_heap4.c:98", + "code_ref": "src/tasks/task03_freertos_heap4.c:179", + "snapshot_ref": "task01.verified", "description": "Kontrolowany OOM nie narusza listy i wywołuje hook dokładnie raz.", - "evidence": "NULL, hooks=1, asserts=0" + "evidence": "NULL; hooks=1; asserts=0; PASS=1" } ] } - ] + ], + "diagram_kind": "sequence" } ] }, @@ -597,33 +912,37 @@ "id": "free", "number": 1, "label": "wolny blok należy do listy", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E01", + "strategy_ref": "run.timeline", "svg_label": "01", - "code_ref": "src/tasks/task03_freertos_heap4.c:70", + "code_ref": "src/tasks/task03_freertos_heap4.c:127", + "snapshot_ref": "task01.reset", "description": "Stan początkowy zawiera jeden największy wolny blok.", - "evidence": "initial free = largest free" + "evidence": "initial free = largest free = 4080" }, { "id": "allocated", "number": 2, "label": "przydzielony blok znika z listy wolnych", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E04", + "strategy_ref": "run.timeline", "svg_label": "02", - "code_ref": "src/tasks/task03_freertos_heap4.c:78", + "code_ref": "src/tasks/task03_freertos_heap4.c:153", + "snapshot_ref": "task01.alloc-c", "description": "Payload jest wyrównany, a bieżąca wolna pamięć maleje.", - "evidence": "all payload pointers aligned" + "evidence": "all payload pointers aligned; free=3936" }, { "id": "fragmented-state", "number": 3, "label": "dwa wolne bloki nie są jednym dużym blokiem", "mode": "RUN", - "event_id": "E01", + "event_id": "E06", "strategy_ref": "run.fragmented", "svg_label": "03", - "code_ref": "src/tasks/task03_freertos_heap4.c:90", + "code_ref": "src/tasks/task03_freertos_heap4.c:168", "snapshot_ref": "task01.fragmented", "description": "Suma wolnego miejsca nie gwarantuje jednego dużego przydziału.", "evidence": "free blocks = 2" @@ -633,10 +952,10 @@ "number": 4, "label": "scalenie przywraca jeden największy blok", "mode": "RUN", - "event_id": "E02", + "event_id": "E07", "strategy_ref": "run.coalesced", "svg_label": "04", - "code_ref": "src/tasks/task03_freertos_heap4.c:94", + "code_ref": "src/tasks/task03_freertos_heap4.c:173", "snapshot_ref": "task01.coalesced", "description": "Current free i largest wracają do wartości początkowej.", "evidence": "free blocks = 1" @@ -645,10 +964,12 @@ "id": "minimum-ever", "number": 5, "label": "minimum-ever zachowuje najniższy poziom", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E08", + "strategy_ref": "run.verified", "svg_label": "05", - "code_ref": "src/tasks/task03_freertos_heap4.c:95", + "code_ref": "src/tasks/task03_freertos_heap4.c:179", + "snapshot_ref": "task01.verified", "description": "Historyczne minimum nie zwiększa się po odzyskaniu pamięci.", "evidence": "minimum-ever <= after allocations" } @@ -664,7 +985,7 @@ "title": "Dowód w Hazard3 i ELF", "order": 70, "orientation": "landscape", - "description": "Ten sam artefakt łączy źródło, symbole ELF, dwa checkpointy, pamięć ucHeap i końcowe asercje.", + "description": "Ten sam artefakt łączy źródło, symbole ELF, osiem checkpointów, pamięć ucHeap i końcowe asercje.", "content_tex": "Snapshot jest dowodem tylko wtedy, gdy zawiera tożsamość artefaktu, pozycję programu i wartości, które rozstrzygają hipotezę.", "assets": [ { @@ -685,7 +1006,7 @@ "mode": "CODE", "strategy_ref": "code.identity", "svg_label": "01", - "code_ref": "src/tasks/task03_freertos_heap4.c:62", + "code_ref": "src/tasks/task03_freertos_heap4.c:127", "description": "Blob źródła jest częścią tożsamości karty.", "evidence": "source git blob" }, @@ -705,22 +1026,24 @@ "number": 3, "label": "checkpoint pokazuje dwa wolne bloki", "mode": "RUN", - "event_id": "E01", + "event_id": "E06", "strategy_ref": "run.fragmented", "svg_label": "03", - "code_ref": "src/tasks/task03_freertos_heap4.c:91", + "code_ref": "src/tasks/task03_freertos_heap4.c:168", "snapshot_ref": "task01.fragmented", "description": "Neovim, GDB i pamięć zatrzymują się na tym samym stanie.", - "evidence": "blocks=2 and aligned=1" + "evidence": "blocks=2 and free>largest" }, { "id": "memory", "number": 4, "label": "ucHeap ujawnia nagłówki i payload", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E06", + "strategy_ref": "run.fragmented", "svg_label": "04", "code_ref": "src/tasks/task03_freertos_heap4.c:11", + "snapshot_ref": "task01.fragmented", "description": "Widok bajtów łączy diagram z realnym układem areny.", "evidence": "aligned arena and in-band metadata" }, @@ -729,11 +1052,11 @@ "number": 5, "label": "checkpoint końcowy dowodzi odzyskania", "mode": "RUN", - "event_id": "E02", - "strategy_ref": "run.coalesced", + "event_id": "E08", + "strategy_ref": "run.verified", "svg_label": "05", - "code_ref": "src/tasks/task03_freertos_heap4.c:111", - "snapshot_ref": "task01.coalesced", + "code_ref": "src/tasks/task03_freertos_heap4.c:179", + "snapshot_ref": "task01.verified", "description": "Jedna ramka łączy stats, OOM, hook i PASS.", "evidence": "final=initial, blocks=1, pass=1" } @@ -748,14 +1071,14 @@ "model_label": "Model bloków heap_4", "model": "Uczeń wyjaśnia nagłówek, wyrównanie, first-fit, split, adresową listę wolnych bloków i dwustronne coalescing.", "replay_label": "Fragmentacja i odzyskanie areny", - "replay": "Uczeń odtwarza dwa checkpointy Hazard3 i odróżnia current free, largest free block oraz minimum-ever.", - "criterion": "Model 13 -> 32 bajty; poprawna predykcja dwóch wolnych bloków po free(A,C) i jednego po free(B); final free = initial free; minimum-ever nie rośnie; OOM zwraca NULL; PASS=1.", + "replay": "Uczeń odtwarza osiem checkpointów Hazard3 i odróżnia current free, largest free block oraz minimum-ever.", + "criterion": "Na RV32 BlockLink_t ma 8 bajtów, lecz 16-bajtowe wyrównanie portu daje xHeapStructSize=16; A/B/C zużywają 48/64/32 bajty; po free(A,C) są dwa wolne bloki, po free(B) jeden; final free = initial free; minimum-ever nie rośnie; OOM zwraca NULL; PASS=1.", "requirement": "Analiza i weryfikacja mechaniki dynamicznej alokacji heap_4 w FreeRTOS C na RV32I/Hazard3." }, "task": { "short_label": "mechanika heap_4", "title": "Predict and prove reusable heap_4 blocks", - "prompt_tex": "Przewidź układ bloków po alloc A/B/C, następnie po free(A,C) i free(B). Odtwórz oba checkpointy i udowodnij, że arena została scalona bez utraty minimum-ever.", + "prompt_tex": "Przewidź układ bloków po alloc A/B/C, następnie po free(A), free(C) i free(B). Odtwórz checkpointy E01--E08 i udowodnij, że arena została scalona bez utraty minimum-ever.", "conclusion_tex": "heap\\_4 odzyskuje pamięć dzięki metadanym w arenie, adresowo uporządkowanej liście i scalaniu sąsiadów. Suma wolnych bajtów nie zastępuje informacji o największym bloku, a minimum-ever jest historią, nie bieżącym stanem.", "flow": [ { @@ -766,8 +1089,8 @@ "steps": [ { "id": "size", - "title": "Policz rozmiar bloku.", - "content_tex": "Dodaj nagłówek do 13 bajtów i wyrównaj wynik do ośmiu." + "title": "Policz rozmiary całych bloków.", + "content_tex": "Rozróżnij surowy BlockLink\\_t (8 bajtów) od xHeapStructSize (16 bajtów), dodaj nagłówek do żądań 24, 40 i 16 bajtów, a następnie wyrównaj wynik do 16." }, { "id": "list", @@ -780,17 +1103,22 @@ "kind": "block", "id": "replay", "title": "B — replay Hazard3", - "content_tex": "Powiąż diagram z dwoma deterministycznymi checkpointami.", + "content_tex": "Powiąż każdy stan diagramu z deterministycznym checkpointem E01--E08.", "steps": [ { - "id": "fragmented", - "title": "Sprawdź E01.", - "content_tex": "Porównaj liczbę wolnych bloków, największy blok i bieżące wolne bajty." + "id": "allocate", + "title": "Sprawdź E01--E04.", + "content_tex": "Potwierdź wartości 4080, 4032, 3968 i 3936 oraz zużycie 48/64/32 bajtów." }, { - "id": "coalesced", - "title": "Sprawdź E02.", - "content_tex": "Udowodnij pełne scalenie, zachowanie minimum-ever i kontrolowany OOM." + "id": "release", + "title": "Sprawdź E05--E07.", + "content_tex": "Porównaj liczbę wolnych bloków i udowodnij scalenie poprzedniego, a potem następnego sąsiada." + }, + { + "id": "verify", + "title": "Sprawdź E08.", + "content_tex": "Udowodnij zachowanie minimum-ever, kontrolowany OOM, brak asercji i PASS=1." } ] }, diff --git a/src/tasks/task03_freertos_heap4.c b/src/tasks/task03_freertos_heap4.c index a73eb93..14ee8fe 100644 --- a/src/tasks/task03_freertos_heap4.c +++ b/src/tasks/task03_freertos_heap4.c @@ -10,16 +10,37 @@ uint8_t ucHeap[configTOTAL_HEAP_SIZE] __attribute__((aligned(portBYTE_ALIGNMENT))); +HeapStats_t g_initial_stats; +HeapStats_t g_after_a_stats; +HeapStats_t g_after_b_stats; +HeapStats_t g_after_allocations_stats; +HeapStats_t g_after_free_a_stats; HeapStats_t g_fragmented_stats; HeapStats_t g_final_stats; volatile size_t g_initial_free; +volatile size_t g_after_a_free; +volatile size_t g_after_b_free; volatile size_t g_after_allocations; +volatile size_t g_after_free_a; +volatile size_t g_fragmented_free; volatile size_t g_final_free; volatile size_t g_minimum_ever_free; +volatile size_t g_a_consumed; +volatile size_t g_b_consumed; +volatile size_t g_c_consumed; +void * volatile g_probe; +void * volatile g_a; +void * volatile g_b; +void * volatile g_c; +void * volatile g_too_large; +volatile int g_a_aligned; +volatile int g_b_aligned; +volatile int g_c_aligned; volatile int g_allocations_aligned; volatile int g_oom_is_null; volatile int g_malloc_failed_hooks; volatile int g_assert_failures; +volatile int g_rv32_layout_expected; volatile int g_task03_pass; void vApplicationMallocFailedHook(void) @@ -45,6 +66,41 @@ BaseType_t xTaskResumeAll(void) } #endif +__attribute__((noinline)) void heap4_reset_checkpoint(void) +{ +#if defined(__GNUC__) + __asm__ volatile("" ::: "memory"); +#endif +} + +__attribute__((noinline)) void heap4_alloc_a_checkpoint(void) +{ +#if defined(__GNUC__) + __asm__ volatile("" ::: "memory"); +#endif +} + +__attribute__((noinline)) void heap4_alloc_b_checkpoint(void) +{ +#if defined(__GNUC__) + __asm__ volatile("" ::: "memory"); +#endif +} + +__attribute__((noinline)) void heap4_alloc_c_checkpoint(void) +{ +#if defined(__GNUC__) + __asm__ volatile("" ::: "memory"); +#endif +} + +__attribute__((noinline)) void heap4_free_a_checkpoint(void) +{ +#if defined(__GNUC__) + __asm__ volatile("" ::: "memory"); +#endif +} + __attribute__((noinline)) void heap4_fragmented_checkpoint(void) { #if defined(__GNUC__) @@ -52,6 +108,13 @@ __attribute__((noinline)) void heap4_fragmented_checkpoint(void) #endif } +__attribute__((noinline)) void heap4_coalesced_checkpoint(void) +{ +#if defined(__GNUC__) + __asm__ volatile("" ::: "memory"); +#endif +} + __attribute__((noinline)) void task03_debug_checkpoint(void) { #if defined(__GNUC__) @@ -61,48 +124,88 @@ __attribute__((noinline)) void task03_debug_checkpoint(void) int main(void) { - void *probe; - void *a; - void *b; - void *c; - void *too_large; - vPortHeapResetState(); - probe = pvPortMalloc(1U); - if (probe != NULL) + g_probe = pvPortMalloc(1U); + if (g_probe != NULL) { - vPortFree(probe); + vPortFree(g_probe); } g_initial_free = xPortGetFreeHeapSize(); + vPortGetHeapStats(&g_initial_stats); + heap4_reset_checkpoint(); - a = pvPortMalloc(24U); - b = pvPortMalloc(40U); - c = pvPortMalloc(16U); + g_a = pvPortMalloc(24U); + g_after_a_free = xPortGetFreeHeapSize(); + g_a_consumed = g_initial_free - g_after_a_free; + g_a_aligned = + g_a != NULL && ((uintptr_t)g_a % portBYTE_ALIGNMENT) == 0U; + vPortGetHeapStats(&g_after_a_stats); + heap4_alloc_a_checkpoint(); + + g_b = pvPortMalloc(40U); + g_after_b_free = xPortGetFreeHeapSize(); + g_b_consumed = g_after_a_free - g_after_b_free; + g_b_aligned = + g_b != NULL && ((uintptr_t)g_b % portBYTE_ALIGNMENT) == 0U; + vPortGetHeapStats(&g_after_b_stats); + heap4_alloc_b_checkpoint(); + + g_c = pvPortMalloc(16U); g_after_allocations = xPortGetFreeHeapSize(); + g_c_consumed = g_after_b_free - g_after_allocations; + g_c_aligned = + g_c != NULL && ((uintptr_t)g_c % portBYTE_ALIGNMENT) == 0U; g_allocations_aligned = - a != NULL && b != NULL && c != NULL && - ((uintptr_t)a % portBYTE_ALIGNMENT) == 0U && - ((uintptr_t)b % portBYTE_ALIGNMENT) == 0U && - ((uintptr_t)c % portBYTE_ALIGNMENT) == 0U; + g_a_aligned && g_b_aligned && g_c_aligned; + vPortGetHeapStats(&g_after_allocations_stats); + heap4_alloc_c_checkpoint(); - vPortFree(a); - vPortFree(c); + vPortFree(g_a); + g_after_free_a = xPortGetFreeHeapSize(); + vPortGetHeapStats(&g_after_free_a_stats); + heap4_free_a_checkpoint(); + + vPortFree(g_c); + g_fragmented_free = xPortGetFreeHeapSize(); vPortGetHeapStats(&g_fragmented_stats); heap4_fragmented_checkpoint(); - vPortFree(b); + vPortFree(g_b); g_final_free = xPortGetFreeHeapSize(); g_minimum_ever_free = xPortGetMinimumEverFreeHeapSize(); vPortGetHeapStats(&g_final_stats); + heap4_coalesced_checkpoint(); - too_large = pvPortMalloc(configTOTAL_HEAP_SIZE * 2U); - g_oom_is_null = too_large == NULL; + g_too_large = pvPortMalloc(configTOTAL_HEAP_SIZE * 2U); + g_oom_is_null = g_too_large == NULL; +#if defined(__riscv) && (__riscv_xlen == 32) + g_rv32_layout_expected = + portBYTE_ALIGNMENT == 16U && + g_initial_free == 4080U && + g_after_a_free == 4032U && g_a_consumed == 48U && + g_after_b_free == 3968U && g_b_consumed == 64U && + g_after_allocations == 3936U && g_c_consumed == 32U && + g_after_free_a == 3984U && + g_fragmented_free == 4016U && + g_final_free == 4080U; +#else + g_rv32_layout_expected = 1; +#endif g_task03_pass = - probe != NULL && g_allocations_aligned && + g_probe != NULL && g_allocations_aligned && + g_rv32_layout_expected && + g_initial_stats.xNumberOfFreeBlocks == 1U && + g_after_a_free < g_initial_free && + g_after_b_free < g_after_a_free && g_initial_free > g_after_allocations && + g_after_free_a > g_after_allocations && + g_fragmented_free > g_after_free_a && g_final_free == g_initial_free && g_minimum_ever_free <= g_after_allocations && + g_after_free_a_stats.xNumberOfFreeBlocks == 2U && g_fragmented_stats.xNumberOfFreeBlocks == 2U && + g_fragmented_stats.xAvailableHeapSpaceInBytes > + g_fragmented_stats.xSizeOfLargestFreeBlockInBytes && g_final_stats.xNumberOfFreeBlocks == 1U && g_final_stats.xSizeOfLargestFreeBlockInBytes == g_initial_free && g_oom_is_null && g_malloc_failed_hooks == 1 && @@ -111,11 +214,15 @@ int main(void) task03_debug_checkpoint(); #if defined(HOST_PRINTF) - printf("initial=%zu after=%zu fragmented=%zu final=%zu min=%zu " - "aligned=%d oom=%d hooks=%d asserts=%d pass=%d\n", - g_initial_free, g_after_allocations, - g_fragmented_stats.xNumberOfFreeBlocks, g_final_free, - g_minimum_ever_free, g_allocations_aligned, g_oom_is_null, + printf("initial=%zu after_a=%zu after_b=%zu after_c=%zu " + "free_a=%zu fragmented=%zu final=%zu min=%zu " + "consumed=%zu/%zu/%zu aligned=%d oom=%d hooks=%d " + "asserts=%d pass=%d\n", + g_initial_free, g_after_a_free, g_after_b_free, + g_after_allocations, g_after_free_a, g_fragmented_free, + g_final_free, g_minimum_ever_free, + g_a_consumed, g_b_consumed, g_c_consumed, + g_allocations_aligned, g_oom_is_null, g_malloc_failed_hooks, g_assert_failures, g_task03_pass); #endif return g_task03_pass ? 0 : 1; diff --git a/tests/check_task03_elf.sh b/tests/check_task03_elf.sh index 304a752..fd4dcf2 100755 --- a/tests/check_task03_elf.sh +++ b/tests/check_task03_elf.sh @@ -8,8 +8,13 @@ objdump="${prefix}objdump" test -s "$elf" for symbol in pvPortMalloc vPortFree prvInsertBlockIntoFreeList ucHeap \ - heap4_fragmented_checkpoint task03_debug_checkpoint g_task03_pass; do + heap4_reset_checkpoint heap4_alloc_a_checkpoint \ + heap4_alloc_b_checkpoint heap4_alloc_c_checkpoint \ + heap4_free_a_checkpoint heap4_fragmented_checkpoint \ + heap4_coalesced_checkpoint task03_debug_checkpoint \ + g_initial_stats g_after_allocations_stats g_fragmented_stats \ + g_final_stats g_rv32_layout_expected g_task03_pass; do "$nm" -a "$elf" | grep -E "[[:space:]]${symbol}$" >/dev/null done "$objdump" -d "$elf" | grep -E 'addi[[:space:]]+sp,sp,-' >/dev/null -printf 'PASS Task 3 links upstream heap_4 and observable checkpoints: %s\n' "$elf" +printf 'PASS Task 3 links upstream heap_4 and eight observable checkpoints: %s\n' "$elf" diff --git a/tests/test_host.sh b/tests/test_host.sh index 322dc3b..a0a53ba 100755 --- a/tests/test_host.sh +++ b/tests/test_host.sh @@ -19,4 +19,4 @@ check_output "$root/host-build/task01_first_fit_split/prog" \ check_output "$root/host-build/task02_address_order_coalesce/prog" \ 'before_nodes=2 before_total=96 before_largest=48 after_nodes=1 after_total=144 after_largest=144 pass=1' check_output "$root/host-build/task03_freertos_heap4/prog" \ - 'initial=4080 after=3952 fragmented=2 final=4080 min=3952 aligned=1 oom=1 hooks=1 asserts=0 pass=1' + 'initial=4080 after_a=4040 after_b=3984 after_c=3952 free_a=3992 fragmented=4024 final=4080 min=3952 consumed=40/56/32 aligned=1 oom=1 hooks=1 asserts=0 pass=1' diff --git a/tools/card-action.sh b/tools/card-action.sh index 1a99120..f26f8db 100755 --- a/tools/card-action.sh +++ b/tools/card-action.sh @@ -105,6 +105,9 @@ build_native() { rv_env_root() { if [[ -n "${RV_ENV_ROOT:-}" ]]; then printf '%s\n' "$RV_ENV_ROOT" + elif [[ -f "$root/vendor/Hazard3/test/sim/common/init.S" && \ + -f "$root/vendor/lab-runtime/memops.c" ]]; then + printf '%s\n' "$root" elif [[ -d /opt/rv-env ]]; then printf '%s\n' /opt/rv-env else @@ -123,6 +126,9 @@ build_hazard3() { "FREERTOS_KERNEL_PATH=$kernel" PROFILE=observe >&2 || return elf="$build_dir/$task_stem/prog.elf" test -s "$elf" + if [[ "$task_number" -eq 3 ]]; then + "$root/tests/check_task03_elf.sh" "$elf" >&2 + fi copy_artifact "$elf" copy_artifact "${elf%.elf}.bin" copy_artifact "${elf%.elf}.lst" @@ -283,7 +289,7 @@ configure_debug_view() { export STEM_DEBUG_MEMORY_EXPR='&g_coalesce_arena' STEM_DEBUG_MEMORY_LENGTH=160 ;; 3) - export STEM_DEBUG_INITIAL_BREAK=heap4_fragmented_checkpoint + export STEM_DEBUG_INITIAL_BREAK=heap4_reset_checkpoint export STEM_DEBUG_MEMORY_EXPR='ucHeap' STEM_DEBUG_MEMORY_LENGTH=160 ;; esac diff --git a/web/app.css b/web/app.css index eac8d78..388a0ab 100644 --- a/web/app.css +++ b/web/app.css @@ -1 +1 @@ -.paper{display:flex;flex-direction:column;gap:3.3cm}.paper>.sheet,.paper>.sheet-spread>.sheet{width:210mm;height:297mm;min-height:297mm;max-height:297mm;margin:0 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"href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "05", @@ -106,6 +116,8 @@ "title": "Git Branching I — branch, switch and merge", "repo": "lab-console-git-branching-1", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "06", @@ -118,6 +130,8 @@ "title": "Git Branching II — rebase and conflicts", "repo": "lab-console-git-branching-2", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "07", @@ -130,6 +144,8 @@ "title": "Docker Fundamentals", "repo": "lab-console-docker", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "08", @@ -152,6 +168,8 @@ "title": "Number Systems and Storage", "repo": "lab-rv32i-asm-number-systems", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "01", @@ -164,6 +182,8 @@ "title": "FPGA Bring-up and Programming", "repo": "lab-rv32i-asm-fpga-bringup", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "02", @@ -176,6 +196,8 @@ "title": "Blinker and Synchronous Logic", "repo": "lab-rv32i-asm-blinker", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "03", @@ -188,6 +210,8 @@ "title": "The RISC-V ISA and Instruction Decoder", "repo": "lab-rv32i-asm-decoder", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "04", @@ -200,6 +224,8 @@ "title": "ALU and the Verilog Assembler", "repo": "lab-rv32i-asm-alu", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "05", @@ -212,6 +238,8 @@ "title": "Control Flow — Jumps and Branches", "repo": "lab-rv32i-asm-control-flow", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "06", @@ -224,6 +252,8 @@ "title": "Addresses and Memory", "repo": "lab-rv32i-asm-addresses-memory", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "07", @@ -236,6 +266,8 @@ "title": "Subroutines and the RISC-V ABI", "repo": "lab-rv32i-asm-subroutines-abi", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "08", @@ -248,6 +280,8 @@ "title": "Load and Store", "repo": "lab-rv32i-asm-load-store", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "09", @@ -270,6 +304,8 @@ "title": "ASM, C and GCC", "repo": "lab-rv32i-strlen-asm-c-gcc", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/852fa3c7-8329-583a-a244-b639d2e04495", + "local_href": "/852fa3c7-8329-583a-a244-b639d2e04495/", + "resource_uuid": "852fa3c7-8329-583a-a244-b639d2e04495", "available": true, "current": false, "number": "01", @@ -295,6 +331,8 @@ "title": ".bss, .data 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"https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/98dbe323-c624-53d6-9fe2-4ee688c44b38", + "local_href": "/98dbe323-c624-53d6-9fe2-4ee688c44b38/", + "resource_uuid": "98dbe323-c624-53d6-9fe2-4ee688c44b38", "available": true, "current": false, "number": "07", @@ -569,6 +617,8 @@ "title": "Structures and Linked State", "repo": "lab-rv32i-c-structures", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/f60fbba3-a788-5f1e-bc24-52af82f227c9", + "local_href": "/f60fbba3-a788-5f1e-bc24-52af82f227c9/", + "resource_uuid": "f60fbba3-a788-5f1e-bc24-52af82f227c9", "available": true, "current": false, "number": "08", @@ -598,6 +648,8 @@ "title": "smalloc, sbrk and minimal libc", "repo": "lab-rv32i-c-smalloc-sbrk-libc", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/8e4f8bee-41f0-523b-8ea2-8926bd3d7ab0", + "local_href": "/8e4f8bee-41f0-523b-8ea2-8926bd3d7ab0/", + "resource_uuid": "8e4f8bee-41f0-523b-8ea2-8926bd3d7ab0", "available": true, "current": false, "number": 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"repo": "lab-rv32i-c-gpio", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "13", @@ -722,6 +782,8 @@ "title": "Translation Units, Linkage and Namespaces", "repo": "lab-cpp-build-namespaces", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "01", @@ -734,6 +796,8 @@ "title": "Classes, Encapsulation and Invariants", "repo": "lab-cpp-classes-invariants", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "02", @@ -746,6 +810,8 @@ "title": "Construction, Destruction and RAII", "repo": "lab-cpp-lifetime-raii", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "03", @@ -758,6 +824,8 @@ "title": "References, const and Value Categories", "repo": "lab-cpp-references-const", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "04", @@ -770,6 +838,8 @@ "title": "Copy, Move and the Rule of Zero/Five", "repo": "lab-cpp-copy-move", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "05", @@ -782,6 +852,8 @@ "title": "Ownership and Resource Types", "repo": "lab-cpp-ownership", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "06", @@ -794,6 +866,8 @@ "title": "Function and Class Templates", "repo": "lab-cpp-templates", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "07", @@ -806,6 +880,8 @@ "title": "Static Polymorphism and CRTP", "repo": "lab-cpp-static-polymorphism", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "08", @@ -818,6 +894,8 @@ "title": "Inheritance, Interfaces and Dynamic Dispatch", "repo": "lab-cpp-dynamic-polymorphism", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "09", @@ -830,6 +908,8 @@ "title": "Operator Overloading and Strong Types", "repo": "lab-cpp-strong-types", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "10", @@ -842,6 +922,8 @@ "title": "Containers, Iterators and Algorithms", "repo": "lab-cpp-containers-iterators", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "11", @@ -854,6 +936,8 @@ "title": "Lambdas, Function Objects and Callables", "repo": "lab-cpp-lambdas-callables", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "12", @@ -866,6 +950,8 @@ "title": "Error Models with and without Exceptions", "repo": "lab-cpp-error-models", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "13", @@ -878,6 +964,8 @@ "title": "Object Layout, ABI and Binary Evidence", "repo": "lab-cpp-abi-evidence", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "14", @@ -890,6 +978,8 @@ "title": "Resource-type Integration Project", "repo": "lab-cpp-resource-integration", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "15", @@ -912,6 +1002,8 @@ "title": "heap_4: From Linear Cursor to Reusable Blocks", "repo": "lab-rv32i-freertos-heap4", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/aea09ab7-9bfd-5368-8d1b-c8724871c1a7", + "local_href": "/aea09ab7-9bfd-5368-8d1b-c8724871c1a7/", + "resource_uuid": "aea09ab7-9bfd-5368-8d1b-c8724871c1a7", "available": true, "current": true, "number": "01", @@ -929,6 +1021,8 @@ "title": "First Task, TCB and Task Stack", "repo": "lab-rv32i-freertos-c-first-task", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/a2538a1a-3c37-4c14-a6ea-db5aba8fd038", + "local_href": "/a2538a1a-3c37-4c14-a6ea-db5aba8fd038/", + "resource_uuid": "a2538a1a-3c37-4c14-a6ea-db5aba8fd038", "available": true, "current": false, "number": "02", @@ -946,6 +1040,8 @@ "title": "Tick, Scheduler, Priorities and Time Slicing", "repo": "lab-rv32i-freertos-c-scheduler", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/2214a13f-34c6-40a1-a561-70a00ec98285", + "local_href": "/2214a13f-34c6-40a1-a561-70a00ec98285/", + "resource_uuid": "2214a13f-34c6-40a1-a561-70a00ec98285", "available": true, "current": false, "number": "03", @@ -963,6 +1059,8 @@ "title": "Delay, Blocking and Task States", "repo": "lab-rv32i-freertos-c-delay-state", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/4a7ef04c-ab08-5783-9192-5b02a90f05f8", + "local_href": "/4a7ef04c-ab08-5783-9192-5b02a90f05f8/", + "resource_uuid": "4a7ef04c-ab08-5783-9192-5b02a90f05f8", "available": true, "current": false, "number": "04", @@ -980,6 +1078,8 @@ "title": "Queues and Byte-copy Semantics", "repo": "lab-rv32i-freertos-c-queue", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/8ee8f36a-471b-51bc-97b8-e204bd541c61", + "local_href": "/8ee8f36a-471b-51bc-97b8-e204bd541c61/", + "resource_uuid": "8ee8f36a-471b-51bc-97b8-e204bd541c61", "available": true, "current": false, "number": "05", @@ -997,6 +1097,8 @@ "title": "Software Timers and the Daemon Task", "repo": "lab-rv32i-freertos-c-software-timers", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/ab188300-f03d-5ddb-8316-b9534876a5bc", + "local_href": "/ab188300-f03d-5ddb-8316-b9534876a5bc/", + "resource_uuid": "ab188300-f03d-5ddb-8316-b9534876a5bc", "available": true, "current": false, "number": "06", @@ -1014,6 +1116,8 @@ "title": "Interrupt-safe API and Semaphore Handoff", "repo": "lab-rv32i-freertos-c-isr-semaphore", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/a6da1075-8d1f-5615-b0e6-0fc33e59e1e3", + "local_href": "/a6da1075-8d1f-5615-b0e6-0fc33e59e1e3/", + "resource_uuid": "a6da1075-8d1f-5615-b0e6-0fc33e59e1e3", "available": true, "current": false, "number": "07", @@ -1031,6 +1135,8 @@ "title": "Critical Sections, Mutexes and Priority Inheritance", "repo": "lab-rv32i-freertos-c-resource-management", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/2392f81a-ed6c-510b-86b5-06c5e2f1c6aa", + "local_href": "/2392f81a-ed6c-510b-86b5-06c5e2f1c6aa/", + "resource_uuid": "2392f81a-ed6c-510b-86b5-06c5e2f1c6aa", "available": true, "current": false, "number": "08", @@ -1048,6 +1154,8 @@ "title": "Event Groups and Multi-event Synchronization", "repo": "lab-rv32i-freertos-c-event-groups", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/3f4c1b8b-d54b-58d5-b92d-87a7233cbd9f", + "local_href": "/3f4c1b8b-d54b-58d5-b92d-87a7233cbd9f/", + "resource_uuid": "3f4c1b8b-d54b-58d5-b92d-87a7233cbd9f", "available": true, "current": false, "number": "09", @@ -1065,6 +1173,8 @@ "title": "Direct-to-task Notifications", "repo": "lab-rv32i-freertos-c-notifications", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/3b57334e-2c35-5207-a51d-9321906db078", + "local_href": "/3b57334e-2c35-5207-a51d-9321906db078/", + "resource_uuid": "3b57334e-2c35-5207-a51d-9321906db078", "available": true, "current": false, "number": "10", @@ -1082,6 +1192,8 @@ "title": "Static Allocation and Bounded Storage", "repo": "lab-rv32i-freertos-c-static-allocation", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/f4d7caf3-d665-5a2d-b9eb-39a120a64ff7", + "local_href": "/f4d7caf3-d665-5a2d-b9eb-39a120a64ff7/", + "resource_uuid": "f4d7caf3-d665-5a2d-b9eb-39a120a64ff7", "available": true, "current": false, "number": "11", @@ -1099,6 +1211,8 @@ "title": "Assertions, Hooks, Stack Checks and Runtime Diagnostics", "repo": "lab-rv32i-freertos-c-diagnostics", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/c3027314-85a4-5e4a-af13-0939c7467a62", + "local_href": "/c3027314-85a4-5e4a-af13-0939c7467a62/", + "resource_uuid": "c3027314-85a4-5e4a-af13-0939c7467a62", "available": true, "current": false, "number": "12", @@ -1116,6 +1230,8 @@ "title": "UART Interrupt-to-task Pipeline", "repo": "lab-rv32i-freertos-c-uart", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/6a838fd1-ab1b-52b6-baaf-659120a4d60a", + "local_href": "/6a838fd1-ab1b-52b6-baaf-659120a4d60a/", + "resource_uuid": "6a838fd1-ab1b-52b6-baaf-659120a4d60a", "available": true, "current": false, "number": "13", @@ -1133,6 +1249,8 @@ "title": "GPIO, Hardware Timer and Deferred Work", "repo": "lab-rv32i-freertos-c-gpio-timer", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/0cc561df-bf81-5bba-9df1-c872d5b42eb8", + "local_href": "/0cc561df-bf81-5bba-9df1-c872d5b42eb8/", + "resource_uuid": "0cc561df-bf81-5bba-9df1-c872d5b42eb8", "available": true, "current": false, "number": "14", @@ -1150,6 +1268,8 @@ "title": "Integrated Deterministic FreeRTOS C Application", "repo": "lab-rv32i-freertos-c-integration", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/fe92efeb-3c38-5975-86d8-ed630e1ad3bb", + "local_href": "/fe92efeb-3c38-5975-86d8-ed630e1ad3bb/", + "resource_uuid": "fe92efeb-3c38-5975-86d8-ed630e1ad3bb", "available": true, "current": false, "number": "15", @@ -1177,6 +1297,8 @@ "title": "C++ Task Wrapper, CRTP and Lifecycle", "repo": "lab-rv32i-freertos-task-stack-vector", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/948ce9fd-3d0c-5721-a0ae-ef422008fec8", + "local_href": "/948ce9fd-3d0c-5721-a0ae-ef422008fec8/", + "resource_uuid": "948ce9fd-3d0c-5721-a0ae-ef422008fec8", "available": true, "current": false, "number": "02", @@ -1194,6 +1316,8 @@ "title": "Vector V1 — Destructor, Move, Ownership and RAII", "repo": "lab-rv32i-freertos-vector-raii", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/de1a2818-4c30-5760-8b31-255114f82e90", + "local_href": "/de1a2818-4c30-5760-8b31-255114f82e90/", + "resource_uuid": "de1a2818-4c30-5760-8b31-255114f82e90", "available": true, "current": false, "number": "03", @@ -1211,6 +1335,8 @@ "title": "Scheduler States, Priorities and Typed Ticks", "repo": "lab-rv32i-freertos-scheduler-states", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/853a7dd7-b00b-4f4a-96e8-c160fc5bb04a", + "local_href": "/853a7dd7-b00b-4f4a-96e8-c160fc5bb04a/", + "resource_uuid": "853a7dd7-b00b-4f4a-96e8-c160fc5bb04a", "available": true, "current": false, "number": "04", @@ -1228,6 +1354,8 @@ "title": "C++ Heap Bridge, Heap Models and HeapStats", "repo": "lab-rv32i-freertos-heap-models", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/c456b505-dc5c-4894-b832-bb4c5afd0feb", + "local_href": "/c456b505-dc5c-4894-b832-bb4c5afd0feb/", + "resource_uuid": "c456b505-dc5c-4894-b832-bb4c5afd0feb", "available": true, "current": false, "number": "05", @@ -1245,6 +1373,8 @@ "title": "MemoryResource and FreeRtosAllocator", "repo": "lab-rv32i-freertos-allocator-resource", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/1af48a2e-8564-4e18-8115-b2c0208169d6", + "local_href": "/1af48a2e-8564-4e18-8115-b2c0208169d6/", + "resource_uuid": "1af48a2e-8564-4e18-8115-b2c0208169d6", "available": true, "current": false, "number": "06", @@ -1262,6 +1392,8 @@ "title": "TaskHandle_t, Explicit Start and Static Trampoline", "repo": "lab-rv32i-freertos-task-wrapper", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/9bffead0-4341-4350-806d-e975b1a3a08f", + "local_href": "/9bffead0-4341-4350-806d-e975b1a3a08f/", + "resource_uuid": "9bffead0-4341-4350-806d-e975b1a3a08f", "available": true, "current": false, "number": "07", @@ -1279,6 +1411,8 @@ "title": "DynamicTask, StaticTask, Deletion and Lifetime", "repo": "lab-rv32i-freertos-static-task", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/d9e45417-a37f-487c-813f-fc7a44d4b4f3", + "local_href": "/d9e45417-a37f-487c-813f-fc7a44d4b4f3/", + "resource_uuid": "d9e45417-a37f-487c-813f-fc7a44d4b4f3", "available": true, "current": false, "number": "08", @@ -1296,6 +1430,8 @@ "title": "Scheduler Facade and Scoped Kernel Guards", "repo": "lab-rv32i-freertos-kernel-facade", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/6a2ab068-17e7-4bfa-b726-2df37787ed69", + "local_href": "/6a2ab068-17e7-4bfa-b726-2df37787ed69/", + "resource_uuid": "6a2ab068-17e7-4bfa-b726-2df37787ed69", "available": true, "current": false, "number": "09", @@ -1313,6 +1449,8 @@ "title": "Queue and StaticQueue", "repo": "lab-rv32i-freertos-queue", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/66967c2d-bb34-4344-8064-f54d06cce47a", + "local_href": "/66967c2d-bb34-4344-8064-f54d06cce47a/", + "resource_uuid": "66967c2d-bb34-4344-8064-f54d06cce47a", "available": true, "current": false, "number": "10", @@ -1330,6 +1468,8 @@ "title": "Mutex, LockGuard and Priority Inheritance", "repo": "lab-rv32i-freertos-mutex", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/34d7ad61-6b03-4922-8e58-b8b98316e5f7", + "local_href": "/34d7ad61-6b03-4922-8e58-b8b98316e5f7/", + "resource_uuid": "34d7ad61-6b03-4922-8e58-b8b98316e5f7", "available": true, "current": false, "number": "11", @@ -1347,6 +1487,8 @@ "title": "Semaphores and Task Notifications", "repo": "lab-rv32i-freertos-semaphore-notify", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/fcb6107c-268f-4e86-a8cc-092e5875f6f0", + "local_href": "/fcb6107c-268f-4e86-a8cc-092e5875f6f0/", + "resource_uuid": "fcb6107c-268f-4e86-a8cc-092e5875f6f0", "available": true, "current": false, "number": "12", @@ -1364,6 +1506,8 @@ "title": "EventGroup and Coordinated State", "repo": "lab-rv32i-freertos-event-group", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/5fbcd7c6-3a73-4cd2-b76c-bdb016d1daaa", + "local_href": "/5fbcd7c6-3a73-4cd2-b76c-bdb016d1daaa/", + "resource_uuid": "5fbcd7c6-3a73-4cd2-b76c-bdb016d1daaa", "available": true, "current": false, "number": "13", @@ -1381,6 +1525,8 @@ "title": "Software Timer and the Timer Daemon Task", "repo": "lab-rv32i-freertos-sw-timer", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/78db37df-63e5-4c5b-80ce-f73a411f0b50", + "local_href": "/78db37df-63e5-4c5b-80ce-f73a411f0b50/", + "resource_uuid": "78db37df-63e5-4c5b-80ce-f73a411f0b50", "available": true, "current": false, "number": "14", @@ -1398,6 +1544,8 @@ "title": "Explicit FromISR, UART and GPIO Wrappers", "repo": "lab-rv32i-freertos-isr-drivers", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/02f6cd71-5c85-4883-a237-1d4ba08d9469", + "local_href": "/02f6cd71-5c85-4883-a237-1d4ba08d9469/", + "resource_uuid": "02f6cd71-5c85-4883-a237-1d4ba08d9469", "available": true, "current": false, "number": "15", @@ -1415,6 +1563,8 @@ "title": "Integrated Real-time Application and Evidence", "repo": "lab-rv32i-freertos-integration", "href": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/05b4f486-a27c-455d-a315-f4e51a4c66b3", + "local_href": "/05b4f486-a27c-455d-a315-f4e51a4c66b3/", + "resource_uuid": "05b4f486-a27c-455d-a315-f4e51a4c66b3", "available": true, "current": false, "number": "16", @@ -1442,6 +1592,8 @@ "title": "Process and Thread Execution Context", "repo": "lab-posix-process-thread", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "01", @@ -1454,6 +1606,8 @@ "title": "pthread_create, pthread_join and Lifecycle", "repo": "lab-posix-pthread-create-join", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "02", @@ -1466,6 +1620,8 @@ "title": "Arguments, Return Values and Ownership", "repo": "lab-posix-thread-arguments", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "03", @@ -1478,6 +1634,8 @@ "title": "Data Races and the Happens-before Question", "repo": "lab-posix-data-races", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "04", @@ -1490,6 +1648,8 @@ "title": "Mutex, Critical Section and Deadlock", "repo": "lab-posix-mutex", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "05", @@ -1502,6 +1662,8 @@ "title": "Condition Variables and Predicates", "repo": "lab-posix-condition-variable", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "06", @@ -1514,6 +1676,8 @@ "title": "Bounded Producer–Consumer Queue", "repo": "lab-posix-producer-consumer", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "07", @@ -1526,6 +1690,8 @@ "title": "POSIX Semaphores", "repo": "lab-posix-semaphore", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "08", @@ -1538,6 +1704,8 @@ "title": "Reader–Writer Lock", "repo": "lab-posix-rwlock", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "09", @@ -1550,6 +1718,8 @@ "title": "C Atomics and Memory Ordering", "repo": "lab-posix-atomics", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "10", @@ -1562,6 +1732,8 @@ "title": "Cancellation, Cleanup and Safe Shutdown", "repo": "lab-posix-cancellation-cleanup", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "11", @@ -1574,6 +1746,8 @@ "title": "Thread-local Storage", "repo": "lab-posix-thread-local", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "12", @@ -1586,6 +1760,8 @@ "title": "Scheduling Policy, Priority and Affinity", "repo": "lab-posix-scheduling", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "13", @@ -1598,6 +1774,8 @@ "title": "GDB, Sanitizers and Race Evidence", "repo": "lab-posix-thread-debugging", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "14", @@ -1610,6 +1788,8 @@ "title": "POSIX Threads vs FreeRTOS Integration", "repo": "lab-posix-freertos-comparison", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "15", @@ -1632,6 +1812,8 @@ "title": "Strategy — Replaceable Behaviour", "repo": "lab-cpp-oop-strategy", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "01", @@ -1644,6 +1826,8 @@ "title": "Adapter — Stable Boundary", "repo": "lab-cpp-oop-adapter", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "02", @@ -1656,6 +1840,8 @@ "title": "Template Method — Fixed Skeleton", "repo": "lab-cpp-oop-template-method", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "03", @@ -1668,6 +1854,8 @@ "title": "Static vs Dynamic Dispatch", "repo": "lab-cpp-oop-dispatch", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "04", @@ -1680,6 +1868,8 @@ "title": "RAII and Ownership", "repo": "lab-cpp-oop-raii", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "05", @@ -1692,6 +1882,8 @@ "title": "State — Explicit Behaviour", "repo": "lab-cpp-oop-state", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "06", @@ -1704,6 +1896,8 @@ "title": "Facade — Subsystem Boundary", "repo": "lab-cpp-oop-facade", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "07", @@ -1716,6 +1910,8 @@ "title": "Command — Request as Object", "repo": "lab-cpp-oop-command", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "08", @@ -1728,6 +1924,8 @@ "title": "Observer — Subscription and Telemetry", "repo": "lab-cpp-oop-observer", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "09", @@ -1740,6 +1938,8 @@ "title": "Factory Method — Resource Policy", "repo": "lab-cpp-oop-factory-method", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "10", @@ -1752,6 +1952,8 @@ "title": "Builder — Valid Configuration", "repo": "lab-cpp-oop-builder", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "11", @@ -1764,6 +1966,8 @@ "title": "Decorator — Measurement and Diagnostics", "repo": "lab-cpp-oop-decorator", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "12", @@ -1776,6 +1980,8 @@ "title": "Composite — Component Tree", "repo": "lab-cpp-oop-composite", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "13", @@ -1788,6 +1994,8 @@ "title": "Chain of Responsibility", "repo": "lab-cpp-oop-chain", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "14", @@ -1800,6 +2008,8 @@ "title": "Pattern-language Integration", "repo": "lab-cpp-oop-integration", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "15", @@ -1856,6 +2066,8 @@ "title": "Strategy — Replaceable Behaviour", "repo": "lab-cpp-oop-strategy", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "01", @@ -1868,6 +2080,8 @@ "title": "Adapter — Stable Boundary", "repo": "lab-cpp-oop-adapter", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "02", @@ -1880,6 +2094,8 @@ "title": "Template Method — Fixed Skeleton", "repo": "lab-cpp-oop-template-method", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "03", @@ -1892,6 +2108,8 @@ "title": "Static vs Dynamic Dispatch", "repo": "lab-cpp-oop-dispatch", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "04", @@ -1904,6 +2122,8 @@ "title": "RAII and Ownership", "repo": "lab-cpp-oop-raii", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "05", @@ -1916,6 +2136,8 @@ "title": "State — Explicit Behaviour", "repo": "lab-cpp-oop-state", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "06", @@ -1928,6 +2150,8 @@ "title": "Facade — Subsystem Boundary", "repo": "lab-cpp-oop-facade", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "07", @@ -1940,6 +2164,8 @@ "title": "Command — Request as Object", "repo": "lab-cpp-oop-command", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "08", @@ -1952,6 +2178,8 @@ "title": "Observer — Subscription and Telemetry", "repo": "lab-cpp-oop-observer", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "09", @@ -1964,6 +2192,8 @@ "title": "Factory Method — Resource Policy", "repo": "lab-cpp-oop-factory-method", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "10", @@ -1976,6 +2206,8 @@ "title": "Builder — Valid Configuration", "repo": "lab-cpp-oop-builder", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "11", @@ -1988,6 +2220,8 @@ "title": "Decorator — Measurement and Diagnostics", "repo": "lab-cpp-oop-decorator", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "12", @@ -2000,6 +2234,8 @@ "title": "Composite — Component Tree", "repo": "lab-cpp-oop-composite", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "13", @@ -2012,6 +2248,8 @@ "title": "Chain of Responsibility", "repo": "lab-cpp-oop-chain", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "14", @@ -2024,6 +2262,8 @@ "title": "Pattern-language Integration", "repo": "lab-cpp-oop-integration", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "15", @@ -2076,6 +2316,8 @@ "title": "Ruch 1D", "repo": "ruch-1d", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "", @@ -2088,6 +2330,8 @@ "title": "Ruch 2D", "repo": "ruch-2d", "href": "", + "local_href": "", + "resource_uuid": "", "available": false, "current": false, "number": "", @@ -2100,6 +2344,8 @@ "title": "Ruch po okręgu", "repo": 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TITLEheap_4: From Linear Cursor to Reusable Blocks
VER.v00.01
DATETIME2026-07-20T00:00:00+02:00
PROJECTFreestanding C nad FreeRTOS
SERIESFreeRTOS C
CARD01/15
SHEET1/7
SUBJ.Inf.
PROG.—
CORE—
SCOPE—
LEVEL—
POS.—
GITEA UUID87e48095-7793-54e3-9230-4e61d31bd459CARD UUIDaea09ab7-9bfd-5368-8d1b-c8724871c1a7AUTHOR  M. Pabiszczak
GITEA  https://zsl-gitea.mpabi.pl/edu-freertos-c/lab-rv32i-freertos-heap4
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TITLEheap_4: From Linear Cursor to Reusable Blocks
VER.v00.01
DATETIME2026-07-20T00:00:00+02:00
PROJECTFreestanding C nad FreeRTOS
SERIESFreeRTOS C
CARD01/15
SHEET1/7
SUBJ.Inf.
PROG.—
CORE—
SCOPE—
LEVEL—
POS.—
GITEA UUID87e48095-7793-54e3-9230-4e61d31bd459CARD UUIDaea09ab7-9bfd-5368-8d1b-c8724871c1a7AUTHOR  Mateusz Pabiszczak
GITEA  https://zsl-gitea.mpabi.pl/edu-freertos-c/lab-rv32i-freertos-heap4
HTML  https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/aea09ab7-9bfd-5368-8d1b-c8724871c1a7
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Uczeń przechodzi od liniowego kursora z K&R 5.4 do wielokrotnego użycia tej samej areny: rozpoznaje nagłówek bloku, first-fit, split oraz dwustronne scalanie wolnych bloków w heap_4.

", @@ -2160,7 +2407,8 @@ "title": "A1 — Od liniowego kursora do odzyskiwalnej areny", "show_heading": false, "toc_entry": true, - "header_html": "
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TITLEheap_4: From Linear Cursor to Reusable Blocks
VER.v00.01
DATETIME2026-07-20T00:00:00+02:00
PROJECTFreestanding C nad FreeRTOS
SERIESFreeRTOS C
CARD01/15
SHEET2/7
SUBJ.Inf.
PROG.—
CORE—
SCOPE—
LEVEL—
POS.—
GITEA UUID87e48095-7793-54e3-9230-4e61d31bd459CARD UUIDaea09ab7-9bfd-5368-8d1b-c8724871c1a7AUTHOR  M. Pabiszczak
GITEA  https://zsl-gitea.mpabi.pl/edu-freertos-c/lab-rv32i-freertos-heap4
HTML  https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/aea09ab7-9bfd-5368-8d1b-c8724871c1a7
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TITLEheap_4: From Linear Cursor to Reusable Blocks
VER.v00.01
DATETIME2026-07-20T00:00:00+02:00
PROJECTFreestanding C nad FreeRTOS
SERIESFreeRTOS C
CARD01/15
SHEET2/7
SUBJ.Inf.
PROG.—
CORE—
SCOPE—
LEVEL—
POS.—
GITEA UUID87e48095-7793-54e3-9230-4e61d31bd459CARD UUIDaea09ab7-9bfd-5368-8d1b-c8724871c1a7AUTHOR  Mateusz Pabiszczak
GITEA  https://zsl-gitea.mpabi.pl/edu-freertos-c/lab-rv32i-freertos-heap4
HTML  https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/aea09ab7-9bfd-5368-8d1b-c8724871c1a7
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", "content_html": "", @@ -2199,9 +2447,9 @@ "number": 1, "label": "aplikacja żąda i zwalnia bajty", "mode": "CODE", - "strategy_ref": "code.heap4", + "strategy_ref": "code.boundary", "svg_label": "01", - "code_ref": "src/tasks/task03_freertos_heap4.c:78", + "code_ref": "src/tasks/task03_freertos_heap4.c:127", "description": "Aplikacja zna wyłącznie publiczne API i wskaźniki payloadu.", "evidence": "trzy żądania 24, 40 i 16 bajtów", "strategy": { @@ -2209,32 +2457,34 @@ "kind": "code", "action": "open", "expected_observations": [ - "heap_4 keeps metadata inside the arena", - "free blocks form one address-ordered intrusive list" + "application code calls only the public FreeRTOS allocation API", + "the selected heap implementation is linked below that API" ], "assertions": [ - "allocated bit is stored in the size field", - "xStart and pxEnd are sentinels" + "the application never edits allocator metadata", + "Hazard3 observes the same ucHeap object named by the ELF" ], "evidence_fields": [ - "symbol", - "list link", - "block size", - "arena address" + "code_ref", + "public symbol", + "arena symbol", + "target profile" ], "prerequisites": [ - "FreeRTOS-Kernel V11.3.0 available" + "K&R 5.4 linear allocator complete" ], "layout": [ + "application", + "FreeRTOS API", + "heap_4", "ucHeap", - "BlockLink_t", - "xStart", - "pxEnd" + "Hazard3" ], "commands": [ - "rg -n 'BlockLink_t|prvInsertBlockIntoFreeList|pvPortMalloc|vPortFree' vendor/FreeRTOS-Kernel/portable/MemMang/heap_4.c" + "rg -n 'pvPortMalloc|vPortFree|vPortGetHeapStats|ucHeap' src/tasks/task03_freertos_heap4.c", + "rg -n 'TASK03_KERNEL_SOURCES|HEAP4_SOURCE' Makefile" ], - "template_id": "code.heap4" + "template_id": "code.boundary" } }, { @@ -2242,9 +2492,9 @@ "number": 2, "label": "FreeRTOS wystawia malloc, free i statystyki", "mode": "CODE", - "strategy_ref": "code.heap4", + "strategy_ref": "code.boundary", "svg_label": "02", - "code_ref": "src/tasks/task03_freertos_heap4.c:90", + "code_ref": "src/tasks/task03_freertos_heap4.c:127", "description": "API oddziela eksperyment od prywatnej listy bloków.", "evidence": "pvPortMalloc, vPortFree, vPortGetHeapStats", "strategy": { @@ -2252,32 +2502,34 @@ "kind": "code", "action": "open", "expected_observations": [ - "heap_4 keeps metadata inside the arena", - "free blocks form one address-ordered intrusive list" + "application code calls only the public FreeRTOS allocation API", + "the selected heap implementation is linked below that API" ], "assertions": [ - "allocated bit is stored in the size field", - "xStart and pxEnd are sentinels" + "the application never edits allocator metadata", + "Hazard3 observes the same ucHeap object named by the ELF" ], "evidence_fields": [ - "symbol", - "list link", - "block size", - "arena address" + "code_ref", + "public symbol", + "arena symbol", + "target profile" ], "prerequisites": [ - "FreeRTOS-Kernel V11.3.0 available" + "K&R 5.4 linear allocator complete" ], "layout": [ + "application", + "FreeRTOS API", + "heap_4", "ucHeap", - "BlockLink_t", - "xStart", - "pxEnd" + "Hazard3" ], "commands": [ - "rg -n 'BlockLink_t|prvInsertBlockIntoFreeList|pvPortMalloc|vPortFree' vendor/FreeRTOS-Kernel/portable/MemMang/heap_4.c" + "rg -n 'pvPortMalloc|vPortFree|vPortGetHeapStats|ucHeap' src/tasks/task03_freertos_heap4.c", + "rg -n 'TASK03_KERNEL_SOURCES|HEAP4_SOURCE' Makefile" ], - "template_id": "code.heap4" + "template_id": "code.boundary" } }, { @@ -2287,9 +2539,9 @@ "mode": "CODE", "strategy_ref": "code.heap4", "svg_label": "03", - "code_ref": "src/tasks/task03_freertos_heap4.c:70", - "description": "Prywatny mechanizm wybiera, dzieli i scala wolne bloki.", - "evidence": "reset i inicjalizacja listy", + "code_ref": "UPSTREAM.md:1", + "description": "Prywatny mechanizm wybiera, dzieli i scala wolne bloki; strategia otwiera prawdziwy heap_4.c.", + "evidence": "prvHeapInit i prvInsertBlockIntoFreeList", "strategy": { "id": "task01/a1/boundary/allocator", "kind": "code", @@ -2318,7 +2570,7 @@ "pxEnd" ], "commands": [ - "rg -n 'BlockLink_t|prvInsertBlockIntoFreeList|pvPortMalloc|vPortFree' vendor/FreeRTOS-Kernel/portable/MemMang/heap_4.c" + "rg -n 'BlockLink_t|prvHeapInit|prvInsertBlockIntoFreeList|pvPortMalloc|vPortFree' ${FREERTOS_KERNEL_PATH:-/opt/FreeRTOS-Kernel}/portable/MemMang/heap_4.c" ], "template_id": "code.heap4" } @@ -2328,7 +2580,7 @@ "number": 4, "label": "ucHeap jest jedną ograniczoną areną", "mode": "CODE", - "strategy_ref": "code.heap4", + "strategy_ref": "code.boundary", "svg_label": "04", "code_ref": "src/tasks/task03_freertos_heap4.c:11", "description": "Metadane i payload znajdują się w tej samej statycznej tablicy.", @@ -2338,32 +2590,34 @@ "kind": "code", "action": "open", "expected_observations": [ - "heap_4 keeps metadata inside the arena", - "free blocks form one address-ordered intrusive list" + "application code calls only the public FreeRTOS allocation API", + "the selected heap implementation is linked below that API" ], "assertions": [ - "allocated bit is stored in the size field", - "xStart and pxEnd are sentinels" + "the application never edits allocator metadata", + "Hazard3 observes the same ucHeap object named by the ELF" ], "evidence_fields": [ - "symbol", - "list link", - "block size", - "arena address" + "code_ref", + "public symbol", + "arena symbol", + "target profile" ], "prerequisites": [ - "FreeRTOS-Kernel V11.3.0 available" + "K&R 5.4 linear allocator complete" ], "layout": [ + "application", + "FreeRTOS API", + "heap_4", "ucHeap", - "BlockLink_t", - "xStart", - "pxEnd" + "Hazard3" ], "commands": [ - "rg -n 'BlockLink_t|prvInsertBlockIntoFreeList|pvPortMalloc|vPortFree' vendor/FreeRTOS-Kernel/portable/MemMang/heap_4.c" + "rg -n 'pvPortMalloc|vPortFree|vPortGetHeapStats|ucHeap' src/tasks/task03_freertos_heap4.c", + "rg -n 'TASK03_KERNEL_SOURCES|HEAP4_SOURCE' Makefile" ], - "template_id": "code.heap4" + "template_id": "code.boundary" } }, { @@ -2386,7 +2640,8 @@ ], "assertions": [ "pvPortMalloc and vPortFree are present", - "prvInsertBlockIntoFreeList is present" + "prvInsertBlockIntoFreeList is present", + "all eight replay checkpoint symbols are present" ], "evidence_fields": [ "source blob", @@ -2460,7 +2715,8 @@ "title": "A2 — Nagłówek, payload i lista wolnych bloków", "show_heading": false, "toc_entry": true, - "header_html": "
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
TITLEheap_4: From Linear Cursor to Reusable Blocks
VER.v00.01
DATETIME2026-07-20T00:00:00+02:00
PROJECTFreestanding C nad FreeRTOS
SERIESFreeRTOS C
CARD01/15
SHEET3/7
SUBJ.Inf.
PROG.—
CORE—
SCOPE—
LEVEL—
POS.—
GITEA UUID87e48095-7793-54e3-9230-4e61d31bd459CARD UUIDaea09ab7-9bfd-5368-8d1b-c8724871c1a7AUTHOR  M. Pabiszczak
GITEA  https://zsl-gitea.mpabi.pl/edu-freertos-c/lab-rv32i-freertos-heap4
HTML  https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/aea09ab7-9bfd-5368-8d1b-c8724871c1a7
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", + "header_html": "
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TITLEheap_4: From Linear Cursor to Reusable Blocks
VER.v00.01
DATETIME2026-07-20T00:00:00+02:00
PROJECTFreestanding C nad FreeRTOS
SERIESFreeRTOS C
CARD01/15
SHEET3/7
SUBJ.Inf.
PROG.—
CORE—
SCOPE—
LEVEL—
POS.—
GITEA UUID87e48095-7793-54e3-9230-4e61d31bd459CARD UUIDaea09ab7-9bfd-5368-8d1b-c8724871c1a7AUTHOR  Mateusz Pabiszczak
GITEA  https://zsl-gitea.mpabi.pl/edu-freertos-c/lab-rv32i-freertos-heap4
HTML  https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/aea09ab7-9bfd-5368-8d1b-c8724871c1a7
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", + "footer_html": "", "left_margin_html": "
TECH
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-
", "content_html": "", @@ -2497,259 +2753,295 @@ { "id": "header", "number": 1, - "label": "nagłówek przechowuje next i size", + "label": "nagłówek RV32 przechowuje next i size", "mode": "CODE", - "strategy_ref": "code.model", + "strategy_ref": "code.heap4", "svg_label": "01", - "code_ref": "src/tasks/heap4_model.h:11", - "description": "ModelBlock pokazuje minimalny kontrakt metadanych heap_4.", - "evidence": "dwa słowa metadanych", + "code_ref": "UPSTREAM.md:1", + "description": "Prawdziwy BlockLink_t zawiera wskaźnik i size_t, po 4 bajty na RV32; port wyrównuje nagłówek do 16 bajtów.", + "evidence": "sizeof(BlockLink_t)=8; portBYTE_ALIGNMENT=16; xHeapStructSize=16", "strategy": { "id": "task01/a2/blocks/header", "kind": "code", "action": "open", "expected_observations": [ - "requested size includes header and alignment", - "free list is ordered by block address" + "heap_4 keeps metadata inside the arena", + "free blocks form one address-ordered intrusive list" ], "assertions": [ - "payload begins after the header", - "split preserves the total arena size" + "allocated bit is stored in the size field", + "xStart and pxEnd are sentinels" ], "evidence_fields": [ - "code_ref", - "header bytes", - "wanted bytes", - "block address" + "symbol", + "list link", + "block size", + "arena address" ], "prerequisites": [ - "K&R 5.4 linear allocator complete" + "FreeRTOS-Kernel V11.3.0 available" ], "layout": [ - "header", - "payload", - "remainder", - "address-ordered list" + "ucHeap", + "BlockLink_t", + "xStart", + "pxEnd" ], "commands": [ - "rg -n 'ModelBlock|align_up|insert_and_coalesce' src/tasks" + "rg -n 'BlockLink_t|prvHeapInit|prvInsertBlockIntoFreeList|pvPortMalloc|vPortFree' ${FREERTOS_KERNEL_PATH:-/opt/FreeRTOS-Kernel}/portable/MemMang/heap_4.c" ], - "template_id": "code.model" + "template_id": "code.heap4" } }, { "id": "alignment", "number": 2, - "label": "żądanie obejmuje nagłówek i wyrównanie", - "mode": "CODE", - "strategy_ref": "code.model", + "label": "A(24) obejmuje nagłówek i wyrównanie", + "mode": "RUN", + "event_id": "E02", + "strategy_ref": "run.timeline", "svg_label": "02", - "code_ref": "src/tasks/task01_first_fit_split.c:3", - "description": "13 bajtów payloadu zajmuje 32 bajty całego bloku.", - "evidence": "header=16, wanted=32", + "code_ref": "src/tasks/task03_freertos_heap4.c:137", + "snapshot_ref": "task01.alloc-a", + "description": "Różnica licznika wolnych bajtów mierzy cały blok, nie sam payload.", + "evidence": "g_a_consumed = 48; g_a_aligned = 1", "strategy": { "id": "task01/a2/blocks/alignment", - "kind": "code", - "action": "open", + "kind": "run", + "action": "replay", "expected_observations": [ - "requested size includes header and alignment", - "free list is ordered by block address" + "every checkpoint is reached from a clean reset with the same ELF", + "free bytes change by the aligned whole-block size, not by payload alone" ], "assertions": [ - "payload begins after the header", - "split preserves the total arena size" + "A, B and C are aligned", + "the free-byte sequence is strictly decreasing during allocation" ], "evidence_fields": [ - "code_ref", - "header bytes", - "wanted bytes", - "block address" + "payload pointer", + "consumed bytes", + "available bytes", + "free-list statistics" ], "prerequisites": [ - "K&R 5.4 linear allocator complete" + "clean Hazard3 RAM", + "task03 image loaded" ], "layout": [ - "header", - "payload", - "remainder", - "address-ordered list" + "current checkpoint", + "source call", + "heap statistics", + "ucHeap memory" ], "commands": [ - "rg -n 'ModelBlock|align_up|insert_and_coalesce' src/tasks" + "print g_initial_free", + "print g_after_a_free", + "print g_after_b_free", + "print g_after_allocations", + "print g_a_consumed", + "print g_b_consumed", + "print g_c_consumed" ], - "template_id": "code.model" + "template_id": "run.timeline" } }, { "id": "split", "number": 3, "label": "split pozostawia osobny wolny blok", - "mode": "CODE", - "strategy_ref": "code.model", + "mode": "RUN", + "event_id": "E02", + "strategy_ref": "run.timeline", "svg_label": "03", - "code_ref": "src/tasks/task01_first_fit_split.c:43", - "description": "Reszta zachowuje własny nagłówek i trafia na listę wolnych.", - "evidence": "32 + 224 = 256", + "code_ref": "src/tasks/task03_freertos_heap4.c:137", + "snapshot_ref": "task01.alloc-a", + "description": "Po pierwszym first-fit pozostała część areny nadal jest jednym wolnym blokiem.", + "evidence": "free = 4032; free blocks = 1", "strategy": { "id": "task01/a2/blocks/split", - "kind": "code", - "action": "open", + "kind": "run", + "action": "replay", "expected_observations": [ - "requested size includes header and alignment", - "free list is ordered by block address" + "every checkpoint is reached from a clean reset with the same ELF", + "free bytes change by the aligned whole-block size, not by payload alone" ], "assertions": [ - "payload begins after the header", - "split preserves the total arena size" + "A, B and C are aligned", + "the free-byte sequence is strictly decreasing during allocation" ], "evidence_fields": [ - "code_ref", - "header bytes", - "wanted bytes", - "block address" + "payload pointer", + "consumed bytes", + "available bytes", + "free-list statistics" ], "prerequisites": [ - "K&R 5.4 linear allocator complete" + "clean Hazard3 RAM", + "task03 image loaded" ], "layout": [ - "header", - "payload", - "remainder", - "address-ordered list" + "current checkpoint", + "source call", + "heap statistics", + "ucHeap memory" ], "commands": [ - "rg -n 'ModelBlock|align_up|insert_and_coalesce' src/tasks" + "print g_initial_free", + "print g_after_a_free", + "print g_after_b_free", + "print g_after_allocations", + "print g_a_consumed", + "print g_b_consumed", + "print g_c_consumed" ], - "template_id": "code.model" + "template_id": "run.timeline" } }, { "id": "address-order", "number": 4, "label": "lista jest uporządkowana rosnącymi adresami", - "mode": "CODE", - "strategy_ref": "code.model", + "mode": "RUN", + "event_id": "E06", + "strategy_ref": "run.fragmented", "svg_label": "04", - "code_ref": "src/tasks/task02_address_order_coalesce.c:29", + "code_ref": "src/tasks/task03_freertos_heap4.c:168", + "snapshot_ref": "task01.fragmented", "description": "Pozycja w liście ujawnia bezpośredniego poprzednika i następnika.", - "evidence": "previous < block < current", + "evidence": "g_a < g_b < g_c; dwa wolne obszary", "strategy": { "id": "task01/a2/blocks/address-order", - "kind": "code", - "action": "open", + "kind": "run", + "action": "replay", "expected_observations": [ - "requested size includes header and alignment", - "free list is ordered by block address" + "A and C are free while B remains allocated", + "the free list contains two blocks" ], "assertions": [ - "payload begins after the header", - "split preserves the total arena size" + "xNumberOfFreeBlocks equals 2", + "current free bytes exceed the largest free block" ], "evidence_fields": [ - "code_ref", - "header bytes", - "wanted bytes", - "block address" + "free blocks", + "largest block", + "free bytes", + "heap bytes" ], "prerequisites": [ - "K&R 5.4 linear allocator complete" + "clean Hazard3 RAM", + "task03 image loaded" ], "layout": [ - "header", - "payload", - "remainder", - "address-ordered list" + "source", + "free-list stats", + "ucHeap memory", + "registers" ], "commands": [ - "rg -n 'ModelBlock|align_up|insert_and_coalesce' src/tasks" + "break heap4_fragmented_checkpoint", + "print g_fragmented_stats", + "print g_fragmented_free", + "x/96bx ucHeap" ], - "template_id": "code.model" - } - }, - { - "id": "right-join", - "number": 5, - "label": "blok scala się z prawym sąsiadem", - "mode": "CODE", - "strategy_ref": "code.model", - "svg_label": "05", - "code_ref": "src/tasks/task02_address_order_coalesce.c:40", - "description": "Koniec zwalnianego bloku równy adresowi current oznacza ciągłość.", - "evidence": "block + size == current", - "strategy": { - "id": "task01/a2/blocks/right-join", - "kind": "code", - "action": "open", - "expected_observations": [ - "requested size includes header and alignment", - "free list is ordered by block address" - ], - "assertions": [ - "payload begins after the header", - "split preserves the total arena size" - ], - "evidence_fields": [ - "code_ref", - "header bytes", - "wanted bytes", - "block address" - ], - "prerequisites": [ - "K&R 5.4 linear allocator complete" - ], - "layout": [ - "header", - "payload", - "remainder", - "address-ordered list" - ], - "commands": [ - "rg -n 'ModelBlock|align_up|insert_and_coalesce' src/tasks" - ], - "template_id": "code.model" + "template_id": "run.fragmented" } }, { "id": "left-join", - "number": 6, - "label": "wynik scala się z lewym sąsiadem", - "mode": "CODE", - "strategy_ref": "code.model", - "svg_label": "06", - "code_ref": "src/tasks/task02_address_order_coalesce.c:48", - "description": "Drugi test domyka dwustronne scalanie w jeden blok.", - "evidence": "previous + size == block", + "number": 5, + "label": "heap_4 scala najpierw poprzedni blok", + "mode": "RUN", + "event_id": "E06", + "strategy_ref": "run.coalescing", + "svg_label": "05", + "code_ref": "src/tasks/task03_freertos_heap4.c:173", + "snapshot_ref": "task01.fragmented", + "description": "Replay E06, tymczasowy breakpoint i step w prywatnej funkcji pokazują pierwszy test ciągłości.", + "evidence": "previous + previous.size == inserted", "strategy": { "id": "task01/a2/blocks/left-join", - "kind": "code", - "action": "open", + "kind": "run", + "action": "replay", "expected_observations": [ - "requested size includes header and alignment", - "free list is ordered by block address" + "the replay stops after free(C), immediately before free(B)", + "inside prvInsertBlockIntoFreeList the previous block is merged before the next block" ], "assertions": [ - "payload begins after the header", - "split preserves the total arena size" + "pxIterator < pxBlockToInsert < pxIterator->pxNextFreeBlock", + "the left adjacency test is evaluated before the right adjacency test" ], "evidence_fields": [ - "code_ref", - "header bytes", - "wanted bytes", - "block address" + "pxIterator", + "pxBlockToInsert", + "left end address", + "right start address" ], "prerequisites": [ - "K&R 5.4 linear allocator complete" + "task01.fragmented replay ready" ], "layout": [ - "header", - "payload", - "remainder", - "address-ordered list" + "application call vPortFree(g_b)", + "prvInsertBlockIntoFreeList", + "free-list links", + "ucHeap addresses" ], "commands": [ - "rg -n 'ModelBlock|align_up|insert_and_coalesce' src/tasks" + "tbreak prvInsertBlockIntoFreeList", + "continue", + "print pxIterator", + "print pxBlockToInsert", + "next" ], - "template_id": "code.model" + "template_id": "run.coalescing" + } + }, + { + "id": "right-join", + "number": 6, + "label": "następnie scala prawy blok", + "mode": "RUN", + "event_id": "E06", + "strategy_ref": "run.coalescing", + "svg_label": "06", + "code_ref": "src/tasks/task03_freertos_heap4.c:173", + "snapshot_ref": "task01.fragmented", + "description": "Drugi test wykorzystuje już powiększony lewy blok i domyka scalenie areny.", + "evidence": "merged + merged.size == current", + "strategy": { + "id": "task01/a2/blocks/right-join", + "kind": "run", + "action": "replay", + "expected_observations": [ + "the replay stops after free(C), immediately before free(B)", + "inside prvInsertBlockIntoFreeList the previous block is merged before the next block" + ], + "assertions": [ + "pxIterator < pxBlockToInsert < pxIterator->pxNextFreeBlock", + "the left adjacency test is evaluated before the right adjacency test" + ], + "evidence_fields": [ + "pxIterator", + "pxBlockToInsert", + "left end address", + "right start address" + ], + "prerequisites": [ + "task01.fragmented replay ready" + ], + "layout": [ + "application call vPortFree(g_b)", + "prvInsertBlockIntoFreeList", + "free-list links", + "ucHeap addresses" + ], + "commands": [ + "tbreak prvInsertBlockIntoFreeList", + "continue", + "print pxIterator", + "print pxBlockToInsert", + "next" + ], + "template_id": "run.coalescing" } } ] @@ -2765,11 +3057,11 @@ "columns": 1, "x": 0.0, "y": 0.0, - "width": 295.0, + "width": 312.0, "height": 620.0, "full_x": 0.0, "full_y": 0.0, - "full_width": 295.0, + "full_width": 312.0, "full_height": 620.0, "page_width": 660.0, "page_height": 760.0, @@ -2805,7 +3097,8 @@ "title": "A5 — First-fit, fragmentacja i pełne scalenie", "show_heading": false, "toc_entry": true, - "header_html": "
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TITLEheap_4: From Linear Cursor to Reusable Blocks
VER.v00.01
DATETIME2026-07-20T00:00:00+02:00
PROJECTFreestanding C nad FreeRTOS
SERIESFreeRTOS C
CARD01/15
SHEET4/7
SUBJ.Inf.
PROG.—
CORE—
SCOPE—
LEVEL—
POS.—
GITEA UUID87e48095-7793-54e3-9230-4e61d31bd459CARD UUIDaea09ab7-9bfd-5368-8d1b-c8724871c1a7AUTHOR  M. Pabiszczak
GITEA  https://zsl-gitea.mpabi.pl/edu-freertos-c/lab-rv32i-freertos-heap4
HTML  https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/aea09ab7-9bfd-5368-8d1b-c8724871c1a7
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TITLEheap_4: From Linear Cursor to Reusable Blocks
VER.v00.01
DATETIME2026-07-20T00:00:00+02:00
PROJECTFreestanding C nad FreeRTOS
SERIESFreeRTOS C
CARD01/15
SHEET4/7
SUBJ.Inf.
PROG.—
CORE—
SCOPE—
LEVEL—
POS.—
GITEA UUID87e48095-7793-54e3-9230-4e61d31bd459CARD UUIDaea09ab7-9bfd-5368-8d1b-c8724871c1a7AUTHOR  Mateusz Pabiszczak
GITEA  https://zsl-gitea.mpabi.pl/edu-freertos-c/lab-rv32i-freertos-heap4
HTML  https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/aea09ab7-9bfd-5368-8d1b-c8724871c1a7
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", "content_html": "", @@ -2843,186 +3136,274 @@ "id": "reset", "number": 1, "label": "reset i inicjalizacja areny", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E01", + "strategy_ref": "run.timeline", "svg_label": "01", - "code_ref": "src/tasks/task03_freertos_heap4.c:70", - "description": "Pierwsze małe żądanie inicjalizuje sentinele i listę.", - "evidence": "initial free = 4080", + "code_ref": "src/tasks/task03_freertos_heap4.c:127", + "snapshot_ref": "task01.reset", + "description": "Próbne żądanie inicjalizuje sentinele; po jego zwolnieniu arena ma jeden blok.", + "evidence": "free = largest = 4080; blocks = 1", "strategy": { "id": "task01/a5/replay/reset", - "kind": "code", - "action": "open", + "kind": "run", + "action": "replay", "expected_observations": [ - "heap_4 keeps metadata inside the arena", - "free blocks form one address-ordered intrusive list" + "every checkpoint is reached from a clean reset with the same ELF", + "free bytes change by the aligned whole-block size, not by payload alone" ], "assertions": [ - "allocated bit is stored in the size field", - "xStart and pxEnd are sentinels" + "A, B and C are aligned", + "the free-byte sequence is strictly decreasing during allocation" ], "evidence_fields": [ - "symbol", - "list link", - "block size", - "arena address" + "payload pointer", + "consumed bytes", + "available bytes", + "free-list statistics" ], "prerequisites": [ - "FreeRTOS-Kernel V11.3.0 available" + "clean Hazard3 RAM", + "task03 image loaded" ], "layout": [ - "ucHeap", - "BlockLink_t", - "xStart", - "pxEnd" + "current checkpoint", + "source call", + "heap statistics", + "ucHeap memory" ], "commands": [ - "rg -n 'BlockLink_t|prvInsertBlockIntoFreeList|pvPortMalloc|vPortFree' vendor/FreeRTOS-Kernel/portable/MemMang/heap_4.c" + "print g_initial_free", + "print g_after_a_free", + "print g_after_b_free", + "print g_after_allocations", + "print g_a_consumed", + "print g_b_consumed", + "print g_c_consumed" ], - "template_id": "code.heap4" + "template_id": "run.timeline" } }, { "id": "alloc-a", "number": 2, "label": "first-fit przydziela A", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E02", + "strategy_ref": "run.timeline", "svg_label": "02", - "code_ref": "src/tasks/task03_freertos_heap4.c:78", + "code_ref": "src/tasks/task03_freertos_heap4.c:137", + "snapshot_ref": "task01.alloc-a", "description": "Pierwszy wystarczający blok zostaje rozdzielony.", - "evidence": "A payload = 24", + "evidence": "A=24; consumed=48; free=4032", "strategy": { "id": "task01/a5/replay/alloc-a", - "kind": "code", - "action": "open", + "kind": "run", + "action": "replay", "expected_observations": [ - "heap_4 keeps metadata inside the arena", - "free blocks form one address-ordered intrusive list" + "every checkpoint is reached from a clean reset with the same ELF", + "free bytes change by the aligned whole-block size, not by payload alone" ], "assertions": [ - "allocated bit is stored in the size field", - "xStart and pxEnd are sentinels" + "A, B and C are aligned", + "the free-byte sequence is strictly decreasing during allocation" ], "evidence_fields": [ - "symbol", - "list link", - "block size", - "arena address" + "payload pointer", + "consumed bytes", + "available bytes", + "free-list statistics" ], "prerequisites": [ - "FreeRTOS-Kernel V11.3.0 available" + "clean Hazard3 RAM", + "task03 image loaded" ], "layout": [ - "ucHeap", - "BlockLink_t", - "xStart", - "pxEnd" + "current checkpoint", + "source call", + "heap statistics", + "ucHeap memory" ], "commands": [ - "rg -n 'BlockLink_t|prvInsertBlockIntoFreeList|pvPortMalloc|vPortFree' vendor/FreeRTOS-Kernel/portable/MemMang/heap_4.c" + "print g_initial_free", + "print g_after_a_free", + "print g_after_b_free", + "print g_after_allocations", + "print g_a_consumed", + "print g_b_consumed", + "print g_c_consumed" ], - "template_id": "code.heap4" + "template_id": "run.timeline" } }, { - "id": "alloc-bc", + "id": "alloc-b", "number": 3, - "label": "kolejne split tworzą B i C", - "mode": "CODE", - "strategy_ref": "code.heap4", + "label": "kolejny split tworzy B", + "mode": "RUN", + "event_id": "E03", + "strategy_ref": "run.timeline", "svg_label": "03", - "code_ref": "src/tasks/task03_freertos_heap4.c:79", - "description": "B i C zajmują kolejne fragmenty tego samego wolnego bloku.", - "evidence": "after allocations = 3952", + "code_ref": "src/tasks/task03_freertos_heap4.c:145", + "snapshot_ref": "task01.alloc-b", + "description": "B zajmuje następny fragment tej samej reszty.", + "evidence": "B=40; consumed=64; free=3968", "strategy": { - "id": "task01/a5/replay/alloc-bc", - "kind": "code", - "action": "open", + "id": "task01/a5/replay/alloc-b", + "kind": "run", + "action": "replay", "expected_observations": [ - "heap_4 keeps metadata inside the arena", - "free blocks form one address-ordered intrusive list" + "every checkpoint is reached from a clean reset with the same ELF", + "free bytes change by the aligned whole-block size, not by payload alone" ], "assertions": [ - "allocated bit is stored in the size field", - "xStart and pxEnd are sentinels" + "A, B and C are aligned", + "the free-byte sequence is strictly decreasing during allocation" ], "evidence_fields": [ - "symbol", - "list link", - "block size", - "arena address" + "payload pointer", + "consumed bytes", + "available bytes", + "free-list statistics" ], "prerequisites": [ - "FreeRTOS-Kernel V11.3.0 available" + "clean Hazard3 RAM", + "task03 image loaded" ], "layout": [ - "ucHeap", - "BlockLink_t", - "xStart", - "pxEnd" + "current checkpoint", + "source call", + "heap statistics", + "ucHeap memory" ], "commands": [ - "rg -n 'BlockLink_t|prvInsertBlockIntoFreeList|pvPortMalloc|vPortFree' vendor/FreeRTOS-Kernel/portable/MemMang/heap_4.c" + "print g_initial_free", + "print g_after_a_free", + "print g_after_b_free", + "print g_after_allocations", + "print g_a_consumed", + "print g_b_consumed", + "print g_c_consumed" ], - "template_id": "code.heap4" + "template_id": "run.timeline" } }, { - "id": "free-ac", + "id": "alloc-c", "number": 4, - "label": "zwolnij A i C, pozostaw B", - "mode": "CODE", - "strategy_ref": "code.heap4", + "label": "trzeci split tworzy C", + "mode": "RUN", + "event_id": "E04", + "strategy_ref": "run.timeline", "svg_label": "04", - "code_ref": "src/tasks/task03_freertos_heap4.c:88", - "description": "C scala się z prawą resztą, ale B oddziela ją od A.", - "evidence": "dwa wolne bloki", + "code_ref": "src/tasks/task03_freertos_heap4.c:153", + "snapshot_ref": "task01.alloc-c", + "description": "A, B i C są wyrównane, a za nimi pozostaje jedna wolna reszta.", + "evidence": "C=16; consumed=32; free=3936", "strategy": { - "id": "task01/a5/replay/free-ac", - "kind": "code", - "action": "open", + "id": "task01/a5/replay/alloc-c", + "kind": "run", + "action": "replay", "expected_observations": [ - "heap_4 keeps metadata inside the arena", - "free blocks form one address-ordered intrusive list" + "every checkpoint is reached from a clean reset with the same ELF", + "free bytes change by the aligned whole-block size, not by payload alone" ], "assertions": [ - "allocated bit is stored in the size field", - "xStart and pxEnd are sentinels" + "A, B and C are aligned", + "the free-byte sequence is strictly decreasing during allocation" ], "evidence_fields": [ - "symbol", - "list link", - "block size", - "arena address" + "payload pointer", + "consumed bytes", + "available bytes", + "free-list statistics" ], "prerequisites": [ - "FreeRTOS-Kernel V11.3.0 available" + "clean Hazard3 RAM", + "task03 image loaded" ], "layout": [ - "ucHeap", - "BlockLink_t", - "xStart", - "pxEnd" + "current checkpoint", + "source call", + "heap statistics", + "ucHeap memory" ], "commands": [ - "rg -n 'BlockLink_t|prvInsertBlockIntoFreeList|pvPortMalloc|vPortFree' vendor/FreeRTOS-Kernel/portable/MemMang/heap_4.c" + "print g_initial_free", + "print g_after_a_free", + "print g_after_b_free", + "print g_after_allocations", + "print g_a_consumed", + "print g_b_consumed", + "print g_c_consumed" ], - "template_id": "code.heap4" + "template_id": "run.timeline" + } + }, + { + "id": "free-a", + "number": 5, + "label": "zwolnij A, pozostaw B i C", + "mode": "RUN", + "event_id": "E05", + "strategy_ref": "run.timeline", + "svg_label": "05", + "code_ref": "src/tasks/task03_freertos_heap4.c:163", + "snapshot_ref": "task01.free-a", + "description": "Wolny A i końcowa reszta są rozdzielone przez B i C.", + "evidence": "blocks=2; free=3984", + "strategy": { + "id": "task01/a5/replay/free-a", + "kind": "run", + "action": "replay", + "expected_observations": [ + "every checkpoint is reached from a clean reset with the same ELF", + "free bytes change by the aligned whole-block size, not by payload alone" + ], + "assertions": [ + "A, B and C are aligned", + "the free-byte sequence is strictly decreasing during allocation" + ], + "evidence_fields": [ + "payload pointer", + "consumed bytes", + "available bytes", + "free-list statistics" + ], + "prerequisites": [ + "clean Hazard3 RAM", + "task03 image loaded" + ], + "layout": [ + "current checkpoint", + "source call", + "heap statistics", + "ucHeap memory" + ], + "commands": [ + "print g_initial_free", + "print g_after_a_free", + "print g_after_b_free", + "print g_after_allocations", + "print g_a_consumed", + "print g_b_consumed", + "print g_c_consumed" + ], + "template_id": "run.timeline" } }, { "id": "fragmented", - "number": 5, - "label": "checkpoint fragmentacji", + "number": 6, + "label": "zwolnij C, pozostaw B", "mode": "RUN", - "event_id": "E01", + "event_id": "E06", "strategy_ref": "run.fragmented", - "svg_label": "05", - "code_ref": "src/tasks/task03_freertos_heap4.c:91", + "svg_label": "06", + "code_ref": "src/tasks/task03_freertos_heap4.c:168", "snapshot_ref": "task01.fragmented", - "description": "GDB zatrzymuje program przy dwóch wolnych blokach.", - "evidence": "xNumberOfFreeBlocks = 2", + "description": "C scala się z prawą resztą, ale B nadal rozdziela dwa wolne obszary.", + "evidence": "blocks=2; free=4016; free>largest", "strategy": { "id": "task01/a5/replay/fragmented", "kind": "run", @@ -3054,66 +3435,24 @@ "commands": [ "break heap4_fragmented_checkpoint", "print g_fragmented_stats", - "x/64bx ucHeap" + "print g_fragmented_free", + "x/96bx ucHeap" ], "template_id": "run.fragmented" } }, - { - "id": "free-b", - "number": 6, - "label": "zwolnij B między dwoma sąsiadami", - "mode": "CODE", - "strategy_ref": "code.heap4", - "svg_label": "06", - "code_ref": "src/tasks/task03_freertos_heap4.c:93", - "description": "Wstawienie adresowe umożliwia dwa testy ciągłości.", - "evidence": "A + B + C + reszta są ciągłe", - "strategy": { - "id": "task01/a5/replay/free-b", - "kind": "code", - "action": "open", - "expected_observations": [ - "heap_4 keeps metadata inside the arena", - "free blocks form one address-ordered intrusive list" - ], - "assertions": [ - "allocated bit is stored in the size field", - "xStart and pxEnd are sentinels" - ], - "evidence_fields": [ - "symbol", - "list link", - "block size", - "arena address" - ], - "prerequisites": [ - "FreeRTOS-Kernel V11.3.0 available" - ], - "layout": [ - "ucHeap", - "BlockLink_t", - "xStart", - "pxEnd" - ], - "commands": [ - "rg -n 'BlockLink_t|prvInsertBlockIntoFreeList|pvPortMalloc|vPortFree' vendor/FreeRTOS-Kernel/portable/MemMang/heap_4.c" - ], - "template_id": "code.heap4" - } - }, { "id": "coalesced", "number": 7, - "label": "arena wraca do jednego bloku", + "label": "zwolnij B i scal oba sąsiednie bloki", "mode": "RUN", - "event_id": "E02", + "event_id": "E07", "strategy_ref": "run.coalesced", "svg_label": "07", - "code_ref": "src/tasks/task03_freertos_heap4.c:96", + "code_ref": "src/tasks/task03_freertos_heap4.c:173", "snapshot_ref": "task01.coalesced", - "description": "Finalne statystyki dowodzą pełnego odzyskania areny.", - "evidence": "final free = initial free; blocks = 1", + "description": "Scalenie lewego, a potem prawego sąsiada przywraca jeden blok.", + "evidence": "free=largest=initial=4080; blocks=1", "strategy": { "id": "task01/a5/replay/coalesced", "kind": "run", @@ -3124,15 +3463,14 @@ ], "assertions": [ "final free equals initial free", - "minimum-ever does not rise after free", - "oversized allocation returns NULL and calls the hook once" + "one free block is also the largest block", + "minimum-ever does not rise after free" ], "evidence_fields": [ "final free", "largest block", "minimum-ever", - "OOM hook", - "PASS" + "free blocks" ], "prerequisites": [ "fragmented checkpoint reached" @@ -3144,9 +3482,10 @@ "PASS" ], "commands": [ - "break task03_debug_checkpoint", + "break heap4_coalesced_checkpoint", "print g_final_stats", - "print g_task03_pass" + "print g_final_free", + "print g_minimum_ever_free" ], "template_id": "run.coalesced" } @@ -3155,43 +3494,51 @@ "id": "oom", "number": 8, "label": "zbyt duże żądanie kończy się NULL", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E08", + "strategy_ref": "run.verified", "svg_label": "08", - "code_ref": "src/tasks/task03_freertos_heap4.c:98", + "code_ref": "src/tasks/task03_freertos_heap4.c:179", + "snapshot_ref": "task01.verified", "description": "Kontrolowany OOM nie narusza listy i wywołuje hook dokładnie raz.", - "evidence": "NULL, hooks=1, asserts=0", + "evidence": "NULL; hooks=1; asserts=0; PASS=1", "strategy": { "id": "task01/a5/replay/oom", - "kind": "code", - "action": "open", + "kind": "run", + "action": "replay", "expected_observations": [ - "heap_4 keeps metadata inside the arena", - "free blocks form one address-ordered intrusive list" + "the oversized request returns NULL", + "the malloc-failed hook runs once without corrupting the recovered arena" ], "assertions": [ - "allocated bit is stored in the size field", - "xStart and pxEnd are sentinels" + "g_oom_is_null equals 1", + "g_malloc_failed_hooks equals 1", + "g_assert_failures equals 0", + "g_task03_pass equals 1" ], "evidence_fields": [ - "symbol", - "list link", - "block size", - "arena address" + "OOM result", + "hook count", + "assert count", + "PASS" ], "prerequisites": [ - "FreeRTOS-Kernel V11.3.0 available" + "coalesced checkpoint reproducible" ], "layout": [ - "ucHeap", - "BlockLink_t", - "xStart", - "pxEnd" + "final stats", + "OOM result", + "hook", + "PASS" ], "commands": [ - "rg -n 'BlockLink_t|prvInsertBlockIntoFreeList|pvPortMalloc|vPortFree' vendor/FreeRTOS-Kernel/portable/MemMang/heap_4.c" + "break task03_debug_checkpoint", + "print g_too_large", + "print g_malloc_failed_hooks", + "print g_assert_failures", + "print g_task03_pass" ], - "template_id": "code.heap4" + "template_id": "run.verified" } } ] @@ -3207,22 +3554,22 @@ "columns": 1, "x": 0.0, "y": 0.0, - "width": 811.0, - "height": 263.0, + "width": 812.0, + "height": 236.0, "full_x": 0.0, "full_y": 0.0, - "full_width": 811.0, - "full_height": 263.0, + "full_width": 812.0, + "full_height": 236.0, "page_width": 940.0, "page_height": 560.0, "overview": true, "step_ids": [ "alloc-a", - "alloc-bc", + "alloc-b", + "alloc-c", "coalesced", "fragmented", - "free-ac", - "free-b", + "free-a", "oom", "reset" ] @@ -3249,7 +3596,8 @@ "title": "A6 — Stan bloku a stan statystyk", "show_heading": false, "toc_entry": true, - "header_html": "
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TITLEheap_4: From Linear Cursor to Reusable Blocks
VER.v00.01
DATETIME2026-07-20T00:00:00+02:00
PROJECTFreestanding C nad FreeRTOS
SERIESFreeRTOS C
CARD01/15
SHEET5/7
SUBJ.Inf.
PROG.—
CORE—
SCOPE—
LEVEL—
POS.—
GITEA UUID87e48095-7793-54e3-9230-4e61d31bd459CARD UUIDaea09ab7-9bfd-5368-8d1b-c8724871c1a7AUTHOR  M. Pabiszczak
GITEA  https://zsl-gitea.mpabi.pl/edu-freertos-c/lab-rv32i-freertos-heap4
HTML  https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/aea09ab7-9bfd-5368-8d1b-c8724871c1a7
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", + "header_html": "
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TITLEheap_4: From Linear Cursor to Reusable Blocks
VER.v00.01
DATETIME2026-07-20T00:00:00+02:00
PROJECTFreestanding C nad FreeRTOS
SERIESFreeRTOS C
CARD01/15
SHEET5/7
SUBJ.Inf.
PROG.—
CORE—
SCOPE—
LEVEL—
POS.—
GITEA UUID87e48095-7793-54e3-9230-4e61d31bd459CARD UUIDaea09ab7-9bfd-5368-8d1b-c8724871c1a7AUTHOR  Mateusz Pabiszczak
GITEA  https://zsl-gitea.mpabi.pl/edu-freertos-c/lab-rv32i-freertos-heap4
HTML  https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/aea09ab7-9bfd-5368-8d1b-c8724871c1a7
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", + "footer_html": "", "left_margin_html": "
TECH
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", "right_margin_html": "
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", "content_html": "", @@ -3287,86 +3635,104 @@ "id": "free", "number": 1, "label": "wolny blok należy do listy", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E01", + "strategy_ref": "run.timeline", "svg_label": "01", - "code_ref": "src/tasks/task03_freertos_heap4.c:70", + "code_ref": "src/tasks/task03_freertos_heap4.c:127", + "snapshot_ref": "task01.reset", "description": "Stan początkowy zawiera jeden największy wolny blok.", - "evidence": "initial free = largest free", + "evidence": "initial free = largest free = 4080", "strategy": { "id": "task01/a6/state/free", - "kind": "code", - "action": "open", + "kind": "run", + "action": "replay", "expected_observations": [ - "heap_4 keeps metadata inside the arena", - "free blocks form one address-ordered intrusive list" + "every checkpoint is reached from a clean reset with the same ELF", + "free bytes change by the aligned whole-block size, not by payload alone" ], "assertions": [ - "allocated bit is stored in the size field", - "xStart and pxEnd are sentinels" + "A, B and C are aligned", + "the free-byte sequence is strictly decreasing during allocation" ], "evidence_fields": [ - "symbol", - "list link", - "block size", - "arena address" + "payload pointer", + "consumed bytes", + "available bytes", + "free-list statistics" ], "prerequisites": [ - "FreeRTOS-Kernel V11.3.0 available" + "clean Hazard3 RAM", + "task03 image loaded" ], "layout": [ - "ucHeap", - "BlockLink_t", - "xStart", - "pxEnd" + "current checkpoint", + "source call", + "heap statistics", + "ucHeap memory" ], "commands": [ - "rg -n 'BlockLink_t|prvInsertBlockIntoFreeList|pvPortMalloc|vPortFree' vendor/FreeRTOS-Kernel/portable/MemMang/heap_4.c" + "print g_initial_free", + "print g_after_a_free", + "print g_after_b_free", + "print g_after_allocations", + "print g_a_consumed", + "print g_b_consumed", + "print g_c_consumed" ], - "template_id": "code.heap4" + "template_id": "run.timeline" } }, { "id": "allocated", "number": 2, "label": "przydzielony blok znika z listy wolnych", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E04", + "strategy_ref": "run.timeline", "svg_label": "02", - "code_ref": "src/tasks/task03_freertos_heap4.c:78", + "code_ref": "src/tasks/task03_freertos_heap4.c:153", + "snapshot_ref": "task01.alloc-c", "description": "Payload jest wyrównany, a bieżąca wolna pamięć maleje.", - "evidence": "all payload pointers aligned", + "evidence": "all payload pointers aligned; free=3936", "strategy": { "id": "task01/a6/state/allocated", - "kind": "code", - "action": "open", + "kind": "run", + "action": "replay", "expected_observations": [ - "heap_4 keeps metadata inside the arena", - "free blocks form one address-ordered intrusive list" + "every checkpoint is reached from a clean reset with the same ELF", + "free bytes change by the aligned whole-block size, not by payload alone" ], "assertions": [ - "allocated bit is stored in the size field", - "xStart and pxEnd are sentinels" + "A, B and C are aligned", + "the free-byte sequence is strictly decreasing during allocation" ], "evidence_fields": [ - "symbol", - "list link", - "block size", - "arena address" + "payload pointer", + "consumed bytes", + "available bytes", + "free-list statistics" ], "prerequisites": [ - "FreeRTOS-Kernel V11.3.0 available" + "clean Hazard3 RAM", + "task03 image loaded" ], "layout": [ - "ucHeap", - "BlockLink_t", - "xStart", - "pxEnd" + "current checkpoint", + "source call", + "heap statistics", + "ucHeap memory" ], "commands": [ - "rg -n 'BlockLink_t|prvInsertBlockIntoFreeList|pvPortMalloc|vPortFree' vendor/FreeRTOS-Kernel/portable/MemMang/heap_4.c" + "print g_initial_free", + "print g_after_a_free", + "print g_after_b_free", + "print g_after_allocations", + "print g_a_consumed", + "print g_b_consumed", + "print g_c_consumed" ], - "template_id": "code.heap4" + "template_id": "run.timeline" } }, { @@ -3374,10 +3740,10 @@ "number": 3, "label": "dwa wolne bloki nie są jednym dużym blokiem", "mode": "RUN", - "event_id": "E01", + "event_id": "E06", "strategy_ref": "run.fragmented", "svg_label": "03", - "code_ref": "src/tasks/task03_freertos_heap4.c:90", + "code_ref": "src/tasks/task03_freertos_heap4.c:168", "snapshot_ref": "task01.fragmented", "description": "Suma wolnego miejsca nie gwarantuje jednego dużego przydziału.", "evidence": "free blocks = 2", @@ -3412,7 +3778,8 @@ "commands": [ "break heap4_fragmented_checkpoint", "print g_fragmented_stats", - "x/64bx ucHeap" + "print g_fragmented_free", + "x/96bx ucHeap" ], "template_id": "run.fragmented" } @@ -3422,10 +3789,10 @@ "number": 4, "label": "scalenie przywraca jeden największy blok", "mode": "RUN", - "event_id": "E02", + "event_id": "E07", "strategy_ref": "run.coalesced", "svg_label": "04", - "code_ref": "src/tasks/task03_freertos_heap4.c:94", + "code_ref": "src/tasks/task03_freertos_heap4.c:173", "snapshot_ref": "task01.coalesced", "description": "Current free i largest wracają do wartości początkowej.", "evidence": "free blocks = 1", @@ -3439,15 +3806,14 @@ ], "assertions": [ "final free equals initial free", - "minimum-ever does not rise after free", - "oversized allocation returns NULL and calls the hook once" + "one free block is also the largest block", + "minimum-ever does not rise after free" ], "evidence_fields": [ "final free", "largest block", "minimum-ever", - "OOM hook", - "PASS" + "free blocks" ], "prerequisites": [ "fragmented checkpoint reached" @@ -3459,9 +3825,10 @@ "PASS" ], "commands": [ - "break task03_debug_checkpoint", + "break heap4_coalesced_checkpoint", "print g_final_stats", - "print g_task03_pass" + "print g_final_free", + "print g_minimum_ever_free" ], "template_id": "run.coalesced" } @@ -3470,43 +3837,51 @@ "id": "minimum-ever", "number": 5, "label": "minimum-ever zachowuje najniższy poziom", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E08", + "strategy_ref": "run.verified", "svg_label": "05", - "code_ref": "src/tasks/task03_freertos_heap4.c:95", + "code_ref": "src/tasks/task03_freertos_heap4.c:179", + "snapshot_ref": "task01.verified", "description": "Historyczne minimum nie zwiększa się po odzyskaniu pamięci.", "evidence": "minimum-ever <= after allocations", "strategy": { "id": "task01/a6/state/minimum-ever", - "kind": "code", - "action": "open", + "kind": "run", + "action": "replay", "expected_observations": [ - "heap_4 keeps metadata inside the arena", - "free blocks form one address-ordered intrusive list" + "the oversized request returns NULL", + "the malloc-failed hook runs once without corrupting the recovered arena" ], "assertions": [ - "allocated bit is stored in the size field", - "xStart and pxEnd are sentinels" + "g_oom_is_null equals 1", + "g_malloc_failed_hooks equals 1", + "g_assert_failures equals 0", + "g_task03_pass equals 1" ], "evidence_fields": [ - "symbol", - "list link", - "block size", - "arena address" + "OOM result", + "hook count", + "assert count", + "PASS" ], "prerequisites": [ - "FreeRTOS-Kernel V11.3.0 available" + "coalesced checkpoint reproducible" ], "layout": [ - "ucHeap", - "BlockLink_t", - "xStart", - "pxEnd" + "final stats", + "OOM result", + "hook", + "PASS" ], "commands": [ - "rg -n 'BlockLink_t|prvInsertBlockIntoFreeList|pvPortMalloc|vPortFree' vendor/FreeRTOS-Kernel/portable/MemMang/heap_4.c" + "break task03_debug_checkpoint", + "print g_too_large", + "print g_malloc_failed_hooks", + "print g_assert_failures", + "print g_task03_pass" ], - "template_id": "code.heap4" + "template_id": "run.verified" } } ] @@ -3522,11 +3897,11 @@ "columns": 1, "x": 0.0, "y": 0.0, - "width": 346.0, + "width": 321.0, "height": 600.0, "full_x": 0.0, "full_y": 0.0, - "full_width": 346.0, + "full_width": 321.0, "full_height": 600.0, "page_width": 660.0, "page_height": 760.0, @@ -3561,7 +3936,8 @@ "title": "A7 — Dowód w Hazard3 i ELF", "show_heading": false, "toc_entry": true, - "header_html": "
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TITLEheap_4: From Linear Cursor to Reusable Blocks
VER.v00.01
DATETIME2026-07-20T00:00:00+02:00
PROJECTFreestanding C nad FreeRTOS
SERIESFreeRTOS C
CARD01/15
SHEET6/7
SUBJ.Inf.
PROG.—
CORE—
SCOPE—
LEVEL—
POS.—
GITEA UUID87e48095-7793-54e3-9230-4e61d31bd459CARD UUIDaea09ab7-9bfd-5368-8d1b-c8724871c1a7AUTHOR  M. Pabiszczak
GITEA  https://zsl-gitea.mpabi.pl/edu-freertos-c/lab-rv32i-freertos-heap4
HTML  https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/aea09ab7-9bfd-5368-8d1b-c8724871c1a7
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TITLEheap_4: From Linear Cursor to Reusable Blocks
VER.v00.01
DATETIME2026-07-20T00:00:00+02:00
PROJECTFreestanding C nad FreeRTOS
SERIESFreeRTOS C
CARD01/15
SHEET6/7
SUBJ.Inf.
PROG.—
CORE—
SCOPE—
LEVEL—
POS.—
GITEA UUID87e48095-7793-54e3-9230-4e61d31bd459CARD UUIDaea09ab7-9bfd-5368-8d1b-c8724871c1a7AUTHOR  Mateusz Pabiszczak
GITEA  https://zsl-gitea.mpabi.pl/edu-freertos-c/lab-rv32i-freertos-heap4
HTML  https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/aea09ab7-9bfd-5368-8d1b-c8724871c1a7
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", "content_html": "", @@ -3588,7 +3964,7 @@ "block": { "id": "a7", "label": "A7 RUNTIME", - "description": "Ten sam artefakt łączy źródło, symbole ELF, dwa checkpointy, pamięć ucHeap i końcowe asercje." + "description": "Ten sam artefakt łączy źródło, symbole ELF, osiem checkpointów, pamięć ucHeap i końcowe asercje." }, "phases": [ { @@ -3602,7 +3978,7 @@ "mode": "CODE", "strategy_ref": "code.identity", "svg_label": "01", - "code_ref": "src/tasks/task03_freertos_heap4.c:62", + "code_ref": "src/tasks/task03_freertos_heap4.c:127", "description": "Blob źródła jest częścią tożsamości karty.", "evidence": "source git blob", "strategy": { @@ -3615,7 +3991,8 @@ ], "assertions": [ "pvPortMalloc and vPortFree are present", - "prvInsertBlockIntoFreeList is present" + "prvInsertBlockIntoFreeList is present", + "all eight replay checkpoint symbols are present" ], "evidence_fields": [ "source blob", @@ -3657,7 +4034,8 @@ ], "assertions": [ "pvPortMalloc and vPortFree are present", - "prvInsertBlockIntoFreeList is present" + "prvInsertBlockIntoFreeList is present", + "all eight replay checkpoint symbols are present" ], "evidence_fields": [ "source blob", @@ -3684,13 +4062,13 @@ "number": 3, "label": "checkpoint pokazuje dwa wolne bloki", "mode": "RUN", - "event_id": "E01", + "event_id": "E06", "strategy_ref": "run.fragmented", "svg_label": "03", - "code_ref": "src/tasks/task03_freertos_heap4.c:91", + "code_ref": "src/tasks/task03_freertos_heap4.c:168", "snapshot_ref": "task01.fragmented", "description": "Neovim, GDB i pamięć zatrzymują się na tym samym stanie.", - "evidence": "blocks=2 and aligned=1", + "evidence": "blocks=2 and free>largest", "strategy": { "id": "task01/a7/evidence/fragmented-runtime", "kind": "run", @@ -3722,7 +4100,8 @@ "commands": [ "break heap4_fragmented_checkpoint", "print g_fragmented_stats", - "x/64bx ucHeap" + "print g_fragmented_free", + "x/96bx ucHeap" ], "template_id": "run.fragmented" } @@ -3731,43 +4110,49 @@ "id": "memory", "number": 4, "label": "ucHeap ujawnia nagłówki i payload", - "mode": "CODE", - "strategy_ref": "code.heap4", + "mode": "RUN", + "event_id": "E06", + "strategy_ref": "run.fragmented", "svg_label": "04", "code_ref": "src/tasks/task03_freertos_heap4.c:11", + "snapshot_ref": "task01.fragmented", "description": "Widok bajtów łączy diagram z realnym układem areny.", "evidence": "aligned arena and in-band metadata", "strategy": { "id": "task01/a7/evidence/memory", - "kind": "code", - "action": "open", + "kind": "run", + "action": "replay", "expected_observations": [ - "heap_4 keeps metadata inside the arena", - "free blocks form one address-ordered intrusive list" + "A and C are free while B remains allocated", + "the free list contains two blocks" ], "assertions": [ - "allocated bit is stored in the size field", - "xStart and pxEnd are sentinels" + "xNumberOfFreeBlocks equals 2", + "current free bytes exceed the largest free block" ], "evidence_fields": [ - "symbol", - "list link", - "block size", - "arena address" + "free blocks", + "largest block", + "free bytes", + "heap bytes" ], "prerequisites": [ - "FreeRTOS-Kernel V11.3.0 available" + "clean Hazard3 RAM", + "task03 image loaded" ], "layout": [ - "ucHeap", - "BlockLink_t", - "xStart", - "pxEnd" + "source", + "free-list stats", + "ucHeap memory", + "registers" ], "commands": [ - "rg -n 'BlockLink_t|prvInsertBlockIntoFreeList|pvPortMalloc|vPortFree' vendor/FreeRTOS-Kernel/portable/MemMang/heap_4.c" + "break heap4_fragmented_checkpoint", + "print g_fragmented_stats", + "print g_fragmented_free", + "x/96bx ucHeap" ], - "template_id": "code.heap4" + "template_id": "run.fragmented" } }, { @@ -3775,11 +4160,11 @@ "number": 5, "label": "checkpoint końcowy dowodzi odzyskania", "mode": "RUN", - "event_id": "E02", - "strategy_ref": "run.coalesced", + "event_id": "E08", + "strategy_ref": "run.verified", "svg_label": "05", - "code_ref": "src/tasks/task03_freertos_heap4.c:111", - "snapshot_ref": "task01.coalesced", + "code_ref": "src/tasks/task03_freertos_heap4.c:179", + "snapshot_ref": "task01.verified", "description": "Jedna ramka łączy stats, OOM, hook i PASS.", "evidence": "final=initial, blocks=1, pass=1", "strategy": { @@ -3787,36 +4172,38 @@ "kind": "run", "action": "replay", "expected_observations": [ - "freeing B joins both neighbours", - "the arena returns to one reusable block" + "the oversized request returns NULL", + "the malloc-failed hook runs once without corrupting the recovered arena" ], "assertions": [ - "final free equals initial free", - "minimum-ever does not rise after free", - "oversized allocation returns NULL and calls the hook once" + "g_oom_is_null equals 1", + "g_malloc_failed_hooks equals 1", + "g_assert_failures equals 0", + "g_task03_pass equals 1" ], "evidence_fields": [ - "final free", - "largest block", - "minimum-ever", - "OOM hook", + "OOM result", + "hook count", + "assert count", "PASS" ], "prerequisites": [ - "fragmented checkpoint reached" + "coalesced checkpoint reproducible" ], "layout": [ "final stats", - "minimum-ever", - "OOM hook", + "OOM result", + "hook", "PASS" ], "commands": [ "break task03_debug_checkpoint", - "print g_final_stats", + "print g_too_large", + "print g_malloc_failed_hooks", + "print g_assert_failures", "print g_task03_pass" ], - "template_id": "run.coalesced" + "template_id": "run.verified" } } ] @@ -3851,7 +4238,7 @@ }, "diagram_title": "A7 · dowód runtime heap_4", "diagram_block_label": "A7 RUNTIME", - "diagram_description": "Ten sam artefakt łączy źródło, symbole ELF, dwa checkpointy, pamięć ucHeap i końcowe asercje.", + "diagram_description": "Ten sam artefakt łączy źródło, symbole ELF, osiem checkpointów, pamięć ucHeap i końcowe asercje.", "diagram_phase_labels": [ "ARTIFACT / CHECKPOINT / MEMORY / ASSERTION" ] @@ -3871,7 +4258,8 @@ "title": "Task01 — mechanika heap_4", "show_heading": true, "toc_entry": true, - "header_html": "
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TITLEheap_4: From Linear Cursor to Reusable Blocks
VER.v00.01
DATETIME2026-07-20T00:00:00+02:00
PROJECTFreestanding C nad FreeRTOS
SERIESFreeRTOS C
CARD01/15
SHEET7/7
SUBJ.Inf.
PROG.—
CORE—
SCOPE—
LEVEL—
POS.—
GITEA UUID87e48095-7793-54e3-9230-4e61d31bd459CARD UUIDaea09ab7-9bfd-5368-8d1b-c8724871c1a7AUTHOR  M. Pabiszczak
GITEA  https://zsl-gitea.mpabi.pl/edu-freertos-c/lab-rv32i-freertos-heap4
HTML  https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/aea09ab7-9bfd-5368-8d1b-c8724871c1a7
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TITLEheap_4: From Linear Cursor to Reusable Blocks
VER.v00.01
DATETIME2026-07-20T00:00:00+02:00
PROJECTFreestanding C nad FreeRTOS
SERIESFreeRTOS C
CARD01/15
SHEET7/7
SUBJ.Inf.
PROG.—
CORE—
SCOPE—
LEVEL—
POS.—
GITEA UUID87e48095-7793-54e3-9230-4e61d31bd459CARD UUIDaea09ab7-9bfd-5368-8d1b-c8724871c1a7AUTHOR  Mateusz Pabiszczak
GITEA  https://zsl-gitea.mpabi.pl/edu-freertos-c/lab-rv32i-freertos-heap4
HTML  https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/aea09ab7-9bfd-5368-8d1b-c8724871c1a7
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", + "footer_html": "", "left_margin_html": "
TECH
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", "content_html": "", @@ -3880,9 +4268,9 @@ "ref": "task01", "title": "Predict and prove reusable heap_4 blocks", "uuid": "aea09ab7-9bfd-5368-8d1b-c8724871c1a7", - "criterion": "Model 13 -> 32 bajty; poprawna predykcja dwóch wolnych bloków po free(A,C) i jednego po free(B); final free = initial free; minimum-ever nie rośnie; OOM zwraca NULL; PASS=1.", + "criterion": "Na RV32 BlockLink_t ma 8 bajtów, lecz 16-bajtowe wyrównanie portu daje xHeapStructSize=16; A/B/C zużywają 48/64/32 bajty; po free(A,C) są dwa wolne bloki, po free(B) jeden; final free = initial free; minimum-ever nie rośnie; OOM zwraca NULL; PASS=1.", "conclusion_html": "

heap_4 odzyskuje pamięć dzięki metadanym w arenie, adresowo uporządkowanej liście i scalaniu sąsiadów. Suma wolnych bajtów nie zastępuje informacji o największym bloku, a minimum-ever jest historią, nie bieżącym stanem.

", - "prompt_html": "

Przewidź układ bloków po alloc A/B/C, następnie po free(A,C) i free(B). Odtwórz oba checkpointy i udowodnij, że arena została scalona bez utraty minimum-ever.

", + "prompt_html": "

Przewidź układ bloków po alloc A/B/C, następnie po free(A), free(C) i free(B). Odtwórz checkpointy E01-E08 i udowodnij, że arena została scalona bez utraty minimum-ever.

", "flow": [ { "id": "predict", @@ -3892,8 +4280,8 @@ "steps": [ { "id": "size", - "title": "Policz rozmiar bloku.", - "content_html": "

Dodaj nagłówek do 13 bajtów i wyrównaj wynik do ośmiu.

" + "title": "Policz rozmiary całych bloków.", + "content_html": "

Rozróżnij surowy BlockLink_t (8 bajtów) od xHeapStructSize (16 bajtów), dodaj nagłówek do żądań 24, 40 i 16 bajtów, a następnie wyrównaj wynik do 16.

" }, { "id": "list", @@ -3906,17 +4294,22 @@ "id": "replay", "kind": "block", "title": "B — replay Hazard3", - "content_html": "

Powiąż diagram z dwoma deterministycznymi checkpointami.

", + "content_html": "

Powiąż każdy stan diagramu z deterministycznym checkpointem E01-E08.

", "steps": [ { - "id": "fragmented", - "title": "Sprawdź E01.", - "content_html": "

Porównaj liczbę wolnych bloków, największy blok i bieżące wolne bajty.

" + "id": "allocate", + "title": "Sprawdź E01--E04.", + "content_html": "

Potwierdź wartości 4080, 4032, 3968 i 3936 oraz zużycie 48/64/32 bajtów.

" }, { - "id": "coalesced", - "title": "Sprawdź E02.", - "content_html": "

Udowodnij pełne scalenie, zachowanie minimum-ever i kontrolowany OOM.

" + "id": "release", + "title": "Sprawdź E05--E07.", + "content_html": "

Porównaj liczbę wolnych bloków i udowodnij scalenie poprzedniego, a potem następnego sąsiada.

" + }, + { + "id": "verify", + "title": "Sprawdź E08.", + "content_html": "

Udowodnij zachowanie minimum-ever, kontrolowany OOM, brak asercji i PASS=1.

" } ] }, @@ -3952,7 +4345,7 @@ { "id": "A2", "label": "STRUCTURE", - "subtitle": "headers and address order", + "subtitle": "RV32 header, split and address order", "status": "enabled", "target_label": "fig:a2-structure", "target_id": "fig-a2-structure" @@ -3970,7 +4363,7 @@ "label": "APPLICATION", "subtitle": "experiment is already explicit", "status": "unavailable", - "reason": "The concrete A/B/C allocation experiment is completely represented by A5 and its two runtime checkpoints.", + "reason": "The concrete A/B/C allocation experiment is completely represented by the eight-state replay in A5.", "target_id": "" }, { diff --git a/web/figures/a2-structure.puml b/web/figures/a2-structure.puml index 262ad72..b8bcce8 100644 --- a/web/figures/a2-structure.puml +++ b/web/figures/a2-structure.puml @@ -8,41 +8,46 @@ skinparam defaultFontSize 10 skinparam classBorderColor #2c7794 skinparam classBackgroundColor #edf6fa skinparam ArrowColor #8095a1 -title A2 STRUCTURE — in-band metadata and address order +title A2 STRUCTURE — RV32 header, split and two-sided coalescing class "01 Block header" as HEADER { next : BlockLink_t* size : size_t + raw sizeof = 8 bytes on RV32 + aligned xHeapStructSize = 16 } class "Allocated block" as ALLOC { - 02 header + 13 byte request - aligned total = 32 bytes + 02 A: header + 24 byte request + aligned total = 48 bytes payload begins after header } class "03 Free remainder" as REM { own header - size = 224 bytes + free = 4032 bytes after A } HEADER *-- ALLOC : precedes payload -ALLOC -down-> REM : split preserves 256 +ALLOC -down-> REM : first-fit + split class "04 Address-ordered free list" as LIST { previous < inserted < current + A < B < C+tail } -class "05 Right neighbour" as RIGHT { - block + block.size == current +class "05 Previous / left neighbour" as LEFT { + previous + previous.size == inserted + merge previous first } -class "06 Left neighbour" as LEFT { - previous + previous.size == block +class "06 Next / right neighbour" as RIGHT { + merged + merged.size == current + merge next second } REM -down-> LIST : insert by address -LIST -down-> RIGHT : join first -RIGHT -down-> LEFT : then join left +LIST -down-> LEFT : heap_4 tests first +LEFT -down-> RIGHT : then tests next note right of LIST -Ordering makes both physical -neighbours locally visible. +Address order exposes both physical +neighbours without scanning the arena. end note @enduml diff --git a/web/figures/a2-structure.svg b/web/figures/a2-structure.svg index cc49cc7..bd54938 100644 --- a/web/figures/a2-structure.svg +++ b/web/figures/a2-structure.svg @@ -1,63 +1,68 @@ -A2 STRUCTURE — in-band metadata and address order01 Block headernext : BlockLink_t*size : size_tAllocated block02 header + 13 byte requestaligned total = 32 bytespayload begins after header03 Free remainderown headersize = 224 bytes04 Address-ordered free listprevious < inserted < current05 Right neighbourblock + block.size == current06 Left neighbourprevious + previous.size == blockOrdering makes both physicalneighbours locally visible.precedes payloadsplit preserves 256insert by addressjoin firstthen join left01 Block headernext : BlockLink_t*size : size_traw sizeof = 8 bytes on RV32aligned xHeapStructSize = 16Allocated block02 A: header + 24 byte requestaligned total = 48 bytespayload begins after header03 Free remainderown headerfree = 4032 bytes after A04 Address-ordered free listprevious < inserted < currentA < B < C+tail05 Previous / left neighbourprevious + previous.size == insertedmerge previous first06 Next / right neighbourmerged + merged.size == currentmerge next secondAddress order exposes both physicalneighbours without scanning the arena.precedes payloadfirst-fit + splitinsert by addressheap_4 tests firstthen tests next01 RESETinitial free = 408002 ALLOC A24 byte payloadfirst-fit + split03 ALLOC B / C40 + 16 byte payloadafter = 395204 FREE A / CB remains allocated05 E01 FRAGMENTED2 free blockscurrent > largest06 FREE Binsert by addressjoin right + left07 E02 COALESCED1 free blockfinal = initial08 OOM CHECKNULL · hook=1asserts=0 · PASS=1pvPortMallocsplit remaindervPortFreeheap statscontinuecoalesceoversized request01 E01 RESET1 block · free=4080raw header=8 · aligned=1602 E02 ALLOC A(24)consumed=48free=403203 E03 ALLOC B(40)consumed=64free=396804 E04 ALLOC C(16)consumed=32free=393605 E05 FREE A2 free blocksfree=398406 E06 FREE C2 blocks · fragmentedfree=401607 E07 FREE Bmerge left + right1 block · free=408008 E08 OOM / VERIFYNULL · hook=1asserts=0 · PASS=1pvPortMallocsplit remaindersplit remaindervPortFree(A)vPortFree(C)vPortFree(B)oversized request Free : 01 one list node -Free --> Allocated : 02 first-fit + split\ncurrent free decreases -Allocated --> Fragmented : free A and C -Fragmented : 03 two free blocks +[*] --> Free : 01 E01 one list node +Free --> Allocated : 02 E04 A+B+C allocated\ncurrent free = 3936 +Allocated --> Fragmented : E05 free A\nE06 free C +Fragmented : 03 E06 two free blocks Fragmented : sum free > largest block -Fragmented --> Coalesced : free B\naddress-order joins neighbours -Coalesced : 04 one free block -Coalesced : current free = initial free -Coalesced --> OOMChecked : request > arena -OOMChecked : NULL + hook once +Fragmented --> Coalesced : 04 E07 free B\nmerge previous, then next +Coalesced : one free block +Coalesced : current = largest = initial +Coalesced --> OOMChecked : 05 E08 request > arena +OOMChecked : NULL · hook=1 · PASS=1 OOMChecked --> [*] -state "05 minimum-ever" as MIN +state "minimum-ever" as MIN Allocated -right-> MIN : records low watermark Fragmented -right-> MIN : does not rise Coalesced -right-> MIN : history remains diff --git a/web/figures/a6-state.svg b/web/figures/a6-state.svg index 12a9095..8c07583 100644 --- a/web/figures/a6-state.svg +++ b/web/figures/a6-state.svg @@ -1,42 +1,42 @@ -A6 STATE — block state and heap statisticsFreeAllocatedFragmented03 two free blockssum free > largest blockCoalesced04 one free blockcurrent free = initial freeOOMCheckedNULL + hook once05 minimum-ever01 one list node02 first-fit + splitcurrent free decreasesfree A and Cfree Baddress-order joins neighboursrequest > arenarecords low watermarkdoes not risehistory remains01 E01 one list node02 E04 A+B+C allocatedcurrent free = 3936E05 free AE06 free C04 E07 free Bmerge previous, then next05 E08 request > arenarecords low watermarkdoes not risehistory remains ELF : compile + link ELF --> E1 : reset / load / replay diff --git a/web/figures/a7-runtime.svg b/web/figures/a7-runtime.svg index 62a80d5..0d55821 100644 --- a/web/figures/a7-runtime.svg +++ b/web/figures/a7-runtime.svg @@ -1,36 +1,36 @@ -A7 RUNTIME — one artifact, two checkpoints, one proof«source»01 task03 CA/B/C experiment«artifact»02 ELF + imageheap_4 symbols«checkpoint E01»03 fragmentedblocks=2 · aligned=1«memory»04 ucHeap[4096]headers + payload«checkpoint E02»05 coalescedfinal=initial · blocks=1OOM=1 · PASS=1compile + linkreset / load / replayinspect bytescontinue«source»01 task03 CA/B/C experiment«artifact»02 ELF + imageheap_4 symbols«checkpoint E06»03 fragmentedblocks=2 · free>largest«memory»04 ucHeap[4096]headers + payload«checkpoint E08»05 verifiedfinal=initial · blocks=1OOM=1 · PASS=1compile + linkreset / load / replayinspect bytescontinue