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Phase 5-Step3: Mid/Large Config Box (future workload optimization)

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Add compile-time configuration for Mid/Large allocation paths using Box pattern.

Implementation:
- Created core/box/mid_large_config_box.h
- Dual-mode config: PGO (compile-time) vs Normal (runtime)
- Replace HAK_ENABLED_* checks with MID_LARGE_* macros
- Dead code elimination when HAKMEM_MID_LARGE_PGO=1

Target Checks Eliminated (PGO mode):
- MID_LARGE_BIGCACHE_ENABLED (BigCache for 2MB+ allocations)
- MID_LARGE_ELO_ENABLED (ELO learning/threshold)
- MID_LARGE_ACE_ENABLED (ACE allocator gate)
- MID_LARGE_EVOLUTION_ENABLED (Evolution sampling)

Files:
- core/box/mid_large_config_box.h (NEW) - Config Box pattern
- core/hakmem_build_flags.h - Add HAKMEM_MID_LARGE_PGO flag
- core/box/hak_alloc_api.inc.h - Replace 2 checks (ELO, BigCache)
- core/box/hak_free_api.inc.h - Replace 2 checks (BigCache)

Performance Impact:
- Current workloads (16B-8KB): No effect (checks not in hot path)
- Future workloads (2MB+): Expected +2-4% via dead code elimination

Box Pattern: ✅ Single responsibility, clear contract, testable

Note: Config Box infrastructure ready for future large allocation benchmarks.

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

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Moe Charm (CI)
2025-11-29 14:39:07 +09:00
parent 3daf75e57f
commit 6f8742582b
4 changed files with 241 additions and 4 deletions
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7
core/box/hak_free_api.inc.h
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@ -14,6 +14,8 @@
#include "../pool_tls.h"
#endif
#include "mid_large_config_box.h" // Phase 5-Step3: Compile-time config for Mid/Large
// Optional route trace: print first N classification lines when enabled by env
#if !HAKMEM_BUILD_RELEASE
static inline int hak_free_route_trace_on(void) {
@ -284,12 +286,13 @@ void hak_free_at(void* ptr, size_t size, hak_callsite_t site) {
goto done;
}
}
if (HAK_ENABLED_CACHE(HAKMEM_FEATURE_BIGCACHE) && hdr->class_bytes >= 2097152) {
// Phase 5-Step3: Use Mid/Large Config Box (compile-time constant in PGO mode)
if (MID_LARGE_BIGCACHE_ENABLED && hdr->class_bytes >= 2097152) {
if (hak_bigcache_put(ptr, hdr->size, hdr->alloc_site)) goto done;
}
{
static int g_bc_l25_en_free = -1; if (g_bc_l25_en_free == -1) { const char* e = getenv("HAKMEM_BIGCACHE_L25"); g_bc_l25_en_free = (e && atoi(e) != 0) ? 1 : 0; }
if (g_bc_l25_en_free && HAK_ENABLED_CACHE(HAKMEM_FEATURE_BIGCACHE) && hdr->size >= 524288 && hdr->size < 2097152) {
if (g_bc_l25_en_free && MID_LARGE_BIGCACHE_ENABLED && hdr->size >= 524288 && hdr->size < 2097152) {
if (hak_bigcache_put(ptr, hdr->size, hdr->alloc_site)) goto done;
}
}