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feat: Add ACE allocation failure tracing and debug hooks

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This commit introduces a comprehensive tracing mechanism for allocation failures within the Adaptive Cache Engine (ACE) component. This feature allows for precise identification of the root cause for Out-Of-Memory (OOM) issues related to ACE allocations.

Key changes include:
- **ACE Tracing Implementation**:
  - Added  environment variable to enable/disable detailed logging of allocation failures.
  - Instrumented , , and  to distinguish between "Threshold" (size class mismatch), "Exhaustion" (pool depletion), and "MapFail" (OS memory allocation failure).
- **Build System Fixes**:
  - Corrected  to ensure  is properly linked into , resolving an  error.
- **LD_PRELOAD Wrapper Adjustments**:
  - Investigated and understood the  wrapper's behavior under , particularly its interaction with  and  checks.
  - Enabled debugging flags for  environment to prevent unintended fallbacks to 's  for non-tiny allocations, allowing comprehensive testing of the  allocator.
- **Debugging & Verification**:
  - Introduced temporary verbose logging to pinpoint execution flow issues within  interception and  routing. These temporary logs have been removed.
  - Created  to facilitate testing of the tracing features.

This feature will significantly aid in diagnosing and resolving allocation-related OOM issues in  by providing clear insights into the failure pathways.
This commit is contained in:
Moe Charm (CI)
2025-12-01 16:37:59 +09:00
parent 2bd8da9267
commit 4ef0171bc0
85 changed files with 5930 additions and 479 deletions
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10
core/box/hak_alloc_api.inc.h
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@ -167,14 +167,7 @@ inline void* hak_alloc_at(size_t size, hak_callsite_t site) {
#endif
}
if (size >= 33000 && size <= 34000) {
fprintf(stderr, "[ALLOC] 33KB: TINY_MAX_SIZE=%d, threshold=%zu, condition=%d\n",
TINY_MAX_SIZE, threshold, (size > TINY_MAX_SIZE && size < threshold));
}
if (size > TINY_MAX_SIZE && size < threshold) {
if (size >= 33000 && size <= 34000) {
fprintf(stderr, "[ALLOC] 33KB: Calling hkm_ace_alloc\n");
}
const FrozenPolicy* pol = hkm_policy_get();
#if HAKMEM_DEBUG_TIMING
HKM_TIME_START(t_ace);
@ -183,9 +176,6 @@ inline void* hak_alloc_at(size_t size, hak_callsite_t site) {
#if HAKMEM_DEBUG_TIMING
HKM_TIME_END(HKM_CAT_POOL_GET, t_ace);
#endif
if (size >= 33000 && size <= 34000) {
fprintf(stderr, "[ALLOC] 33KB: hkm_ace_alloc returned %p\n", l1);
}
if (l1) return l1;
}