feat: add interactive FC01 heap4 card

2026-07-20 12:04:14 +02:00
parent bd34c7ec1e
commit 48eccb5e24
39 changed files with 7744 additions and 210 deletions
@@ -0,0 +1,29 @@
+@startuml
+scale 600 height
+top to bottom direction
+skinparam backgroundColor transparent
+skinparam shadowing false
+skinparam defaultFontName Monospace
+skinparam defaultFontSize 10
+skinparam stateBorderColor #2c7794
+skinparam stateBackgroundColor #edf6fa
+skinparam ArrowColor #8095a1
+title A6 STATE — block state and heap statistics
+
+[*] --> 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
+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
+OOMChecked --> [*]
+
+state "05 minimum-ever" as MIN
+Allocated -right-> MIN : records low watermark
+Fragmented -right-> MIN : does not rise
+Coalesced -right-> MIN : history remains
+@enduml