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docs(heap_debug): Add missing information

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- Place the section on alloc failed hook at a better place
- Add reference to the different poisoning configs at the beginning
  of the heap corruption detectino section
- Update the information concerning heap tracing
- Update the heap tracing log examples
- Fix heap tracing standalone code:
  - Update the logging format in heap_trace_dump_base
  - Add freed field in trace stucture to keep this info even
    when no call stack is available
This commit is contained in:
Guillaume Souchere
2024-08-20 14:34:41 +02:00
parent 43b0d1053c
commit 8e06c4ca6a
6 changed files with 218 additions and 99 deletions
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33
components/heap/heap_trace_standalone.c
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@@ -380,24 +380,31 @@ static void heap_trace_dump_base(bool internal_ram, bool psram)
label = ", PSRAM";
}
esp_rom_printf("%6d bytes (@ %p%s) allocated CPU %d ccount 0x%08x caller ",
esp_rom_printf("%6d bytes (@ %p%s) allocated CPU %d ccount 0x%08x",
r_cur->size, r_cur->address, label, r_cur->ccount & 1, r_cur->ccount & ~3);
for (int j = 0; j < STACK_DEPTH && r_cur->alloced_by[j] != 0; j++) {
esp_rom_printf("%p%s", r_cur->alloced_by[j],
(j < STACK_DEPTH - 1) ? ":" : "");
if (STACK_DEPTH != 0 && r_cur->alloced_by[0] != NULL) {
esp_rom_printf(" caller ");
for (int j = 0; j < STACK_DEPTH && r_cur->alloced_by[j] != 0; j++) {
esp_rom_printf("%p%s", r_cur->alloced_by[j],
(j < STACK_DEPTH - 1) ? ":" : "");
}
}
if (mode != HEAP_TRACE_ALL || STACK_DEPTH == 0 || r_cur->freed_by[0] == NULL) {
if (r_cur->freed == true) {
if ((mode == HEAP_TRACE_ALL) && (STACK_DEPTH != 0) && (r_cur->freed_by[0] != NULL)) {
esp_rom_printf("\nfreed by ");
for (int j = 0; j < STACK_DEPTH; j++) {
esp_rom_printf("%p%s", r_cur->freed_by[j],
(j < STACK_DEPTH - 1) ? ":" : "\n");
}
} else {
esp_rom_printf(" freed\n");
}
} else {
delta_size += r_cur->size;
delta_allocs++;
esp_rom_printf("\n");
} else {
esp_rom_printf("\nfreed by ");
for (int j = 0; j < STACK_DEPTH; j++) {
esp_rom_printf("%p%s", r_cur->freed_by[j],
(j < STACK_DEPTH - 1) ? ":" : "\n");
}
}
}
@@ -500,6 +507,7 @@ static HEAP_IRAM_ATTR void record_free(void *p, void **callers)
heap_trace_record_t *r_found = list_find(p);
if (r_found != NULL) {
// add 'freed_by' info to the record
r_found->freed = true;
memcpy(r_found->freed_by, callers, sizeof(void *) * STACK_DEPTH);
}
} else { // HEAP_TRACE_LEAKS
@@ -538,6 +546,7 @@ static HEAP_IRAM_ATTR void list_remove(heap_trace_record_t* r_remove)
// set as unused
r_remove->address = 0;
r_remove->size = 0;
r_remove->freed = false;
// add to records.unused
TAILQ_INSERT_HEAD(&records.unused, r_remove, tailq_list);
@@ -559,6 +568,7 @@ static HEAP_IRAM_ATTR heap_trace_record_t* list_pop_unused(void)
heap_trace_record_t *r_unused = TAILQ_FIRST(&records.unused);
assert(r_unused->address == NULL);
assert(r_unused->size == 0);
assert(r_unused->freed == false);
// remove from records.unused
TAILQ_REMOVE(&records.unused, r_unused, tailq_list);
@@ -573,6 +583,7 @@ static HEAP_IRAM_ATTR void record_deep_copy(heap_trace_record_t *r_dest, const h
r_dest->ccount = r_src->ccount;
r_dest->address = r_src->address;
r_dest->size = r_src->size;
r_dest->freed = r_src->freed;
memcpy(r_dest->freed_by, r_src->freed_by, sizeof(void *) * STACK_DEPTH);
memcpy(r_dest->alloced_by, r_src->alloced_by, sizeof(void *) * STACK_DEPTH);
}