d54893ea1d
Step 2 & 3 Complete: - A/B test (Mixed 10-run): STATIC_ROUTE=0 (38.91M) → =1 (39.77M) = +2.20% avg - Median gain: +1.98% - Result: ✅ GO (exceeds +1.0% threshold) - Decision: ✅ ADOPT into MIXED_TINYV3_C7_SAFE preset - bench_profile.h line 77: HAKMEM_TINY_STATIC_ROUTE=1 default - Learner auto-disables static route when HAKMEM_SMALL_LEARNER_V7_ENABLED=1 Implementation Summary: - core/box/tiny_static_route_box.{h,c}: Research box (Step 1A) - core/front/malloc_tiny_fast.h: Route lookup integration (Step 1B, lines 249-256) - core/bench_profile.h: Bench sync + preset adoption Cumulative Phase 2-3 Gains: - B3 (Routing shape): +2.89% - B4 (Wrapper split): +1.47% - C3 (Static routing): +2.20% - Total: ~6.8% (35.2M → ~39.8M ops/s) Next: Phase 3 C1 (TLS Prefetch, expected +2-4%) 🤖 Generated with Claude Code Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
#ifndef HAKMEM_FREE_PATH_STATS_BOX_H
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#define HAKMEM_FREE_PATH_STATS_BOX_H
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include "../hakmem_build_flags.h"
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typedef struct FreePathStats {
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uint64_t total_calls;
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uint64_t c7_ultra_fast;
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uint64_t c6_ultra_free_fast; // Phase 4-2: C6 ULTRA-free
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uint64_t c6_ultra_alloc_hit; // Phase 4-4: C6 ULTRA-alloc (TLS pop)
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uint64_t c6_ifl_push; // Phase TLS-UNIFY-3: C6 intrusive push
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uint64_t c6_ifl_pop; // Phase TLS-UNIFY-3: C6 intrusive pop
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uint64_t c6_ifl_fallback; // Phase TLS-UNIFY-3: C6 intrusive fallback (slow)
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uint64_t c5_ultra_free_fast; // Phase 5-1: C5 ULTRA-free
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uint64_t c5_ultra_alloc_hit; // Phase 5-2: C5 ULTRA-alloc (TLS pop)
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uint64_t c4_ultra_free_fast; // Phase 6: C4 ULTRA-free (cap=64)
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uint64_t c4_ultra_alloc_hit; // Phase 6: C4 ULTRA-alloc (TLS pop)
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uint64_t smallheap_v3_fast;
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uint64_t smallheap_v6_fast;
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uint64_t smallheap_v7_fast; // Phase v7-2: SmallHeap v7 fast free
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uint64_t tiny_heap_v1_fast;
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uint64_t pool_v1_fast;
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uint64_t remote_free;
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uint64_t super_lookup_called;
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uint64_t legacy_fallback;
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// Phase 4-1: Legacy per-class breakdown
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uint64_t legacy_by_class[8]; // C0-C7 の Legacy fallback 内訳
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// Phase POLICY-FAST-PATH-V2: Fast-path policy skip
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uint64_t policy_fast_v2_skip; // Phase POLICY-FAST-PATH-V2 fast-path skips
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} FreePathStats;
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// ENV gate
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static inline bool free_path_stats_enabled(void) {
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#if !HAKMEM_DEBUG_COUNTERS
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return false;
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#else
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static int g_enabled = -1; // -1: unknown, 0: off, 1: on
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static int g_probe_left = 64; // tolerate early getenv() instability (bench_profile putenv)
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if (__builtin_expect(g_enabled == 1, 1)) return true;
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if (__builtin_expect(g_enabled == 0, 1)) return false;
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const char* e = getenv("HAKMEM_FREE_PATH_STATS");
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if (e && *e) {
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g_enabled = (*e != '0') ? 1 : 0;
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return g_enabled == 1;
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}
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if (g_probe_left-- > 0) {
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return false; // keep g_enabled==-1, retry later
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}
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g_enabled = 0;
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return false;
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#endif
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}
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// Global stats instance
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extern FreePathStats g_free_path_stats;
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// Increment macros (with unlikely guard)
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#if HAKMEM_DEBUG_COUNTERS
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#define FREE_PATH_STAT_INC(field) \
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do { if (__builtin_expect(free_path_stats_enabled(), 0)) { \
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g_free_path_stats.field++; \
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} } while(0)
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#else
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#define FREE_PATH_STAT_INC(field) ((void)0)
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#endif
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#endif // HAKMEM_FREE_PATH_STATS_BOX_H
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