user
32 lines
1021 B
Plaintext
32 lines
1021 B
Plaintext
@startuml
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scale 600 height
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top to bottom direction
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skinparam backgroundColor transparent
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skinparam shadowing false
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skinparam defaultFontName Monospace
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skinparam defaultFontSize 10
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skinparam rectangleBorderColor #2c7794
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skinparam rectangleBackgroundColor #edf6fa
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skinparam ArrowColor #8095a1
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title A1 CONTEXT — from linear cursor to reusable heap
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rectangle "<<application>>\n01 A / B / C experiment\nrequests payload bytes" as APP
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rectangle "<<public API>>\n02 pvPortMalloc / vPortFree\nheap statistics" as API
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rectangle "<<allocator>>\n03 heap_4\nfirst-fit · split · coalesce" as H4
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rectangle "<<arena>>\n04 ucHeap[4096]\nheaders + payload" as ARENA
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rectangle "<<target>>\n05 Hazard3 / RV32I\nGDB · registers · memory" as TARGET
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APP -down-> API : request / release
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API -down-> H4 : direct C call
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H4 -down-> ARENA : manages
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ARENA -down-> TARGET : stored in RAM
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note right of H4
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heap_1: allocate only
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heap_2: free, no coalesce
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heap_3: libc wrapper
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heap_4: free + coalesce
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heap_5: multiple regions
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end note
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@enduml
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