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Remove debug overhead from release builds (19 hotspots)

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Problem:
- Release builds (-DHAKMEM_BUILD_RELEASE=1) still execute debug code
- fprintf, getenv(), atomic counters in hot paths
- Performance: 9M ops/s vs System malloc 43M ops/s (4.8x slower)

Fixed hotspots:
1. hak_alloc_api.inc.h - atomic_fetch_add + fprintf every alloc
2. hak_free_api.inc.h - Free wrapper trace + route trace
3. hak_wrappers.inc.h - Malloc wrapper logs
4. tiny_free_fast.inc.h - getenv() every free (CRITICAL!)
5. hakmem_tiny_refill.inc.h - Expensive validation
6. hakmem_tiny_sfc.c - SFC initialization logs
7. tiny_alloc_fast_sfc.inc.h - getenv() caching

Changes:
- Guard all fprintf/printf with #if !HAKMEM_BUILD_RELEASE
- Cache getenv() results in TLS variables (debug builds only)
- Remove atomic counters from hot paths in release builds
- Add no-op stubs for release builds

Impact:
- All debug code completely eliminated in release builds
- Expected improvement: Limited (deeper profiling needed)
- Root cause: Performance bottleneck exists beyond debug overhead

Note: Benchmark results show debug removal alone insufficient for
performance goals. Further investigation required with perf profiling.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Moe Charm (CI)
2025-11-13 13:32:58 +09:00
parent c28314fb96
commit 6570f52f7b
8 changed files with 661 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
core/box/hak_alloc_api.inc.h
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@ -21,12 +21,14 @@ static inline void* hak_os_map_boundary(size_t size, uintptr_t site_id) {
__attribute__((always_inline))
inline void* hak_alloc_at(size_t size, hak_callsite_t site) {
#if !HAKMEM_BUILD_RELEASE
static _Atomic uint64_t hak_alloc_call_count = 0;
uint64_t call_num = atomic_fetch_add(&hak_alloc_call_count, 1);
if (call_num > 14250 && call_num < 14280 && size <= 1024) {
fprintf(stderr, "[HAK_ALLOC_AT] call=%lu size=%zu\n", call_num, size);
fflush(stderr);
}
#endif
#if HAKMEM_DEBUG_TIMING
HKM_TIME_START(t0);
@ -36,24 +38,30 @@ inline void* hak_alloc_at(size_t size, hak_callsite_t site) {
uintptr_t site_id = (uintptr_t)site;
if (__builtin_expect(size <= TINY_MAX_SIZE, 1)) {
#if !HAKMEM_BUILD_RELEASE
if (call_num > 14250 && call_num < 14280 && size <= 1024) {
fprintf(stderr, "[HAK_ALLOC_AT] call=%lu entering tiny path\n", call_num);
fflush(stderr);
}
#endif
#if HAKMEM_DEBUG_TIMING
HKM_TIME_START(t_tiny);
#endif
void* tiny_ptr = NULL;
#ifdef HAKMEM_TINY_PHASE6_BOX_REFACTOR
#if !HAKMEM_BUILD_RELEASE
if (call_num > 14250 && call_num < 14280 && size <= 1024) {
fprintf(stderr, "[HAK_ALLOC_AT] call=%lu calling hak_tiny_alloc_fast_wrapper\n", call_num);
fflush(stderr);
}
#endif
tiny_ptr = hak_tiny_alloc_fast_wrapper(size);
#if !HAKMEM_BUILD_RELEASE
if (call_num > 14250 && call_num < 14280 && size <= 1024) {
fprintf(stderr, "[HAK_ALLOC_AT] call=%lu hak_tiny_alloc_fast_wrapper returned %p\n", call_num, tiny_ptr);
fflush(stderr);
}
#endif
#elif defined(HAKMEM_TINY_PHASE6_ULTRA_SIMPLE)
tiny_ptr = hak_tiny_alloc_ultra_simple(size);
#elif defined(HAKMEM_TINY_PHASE6_METADATA)