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695aec8279bfba400e85f509f2066b20281cf7fc
hakmem/core/box
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Moe Charm (CI) 695aec8279 feat(Phase 1-2): Add atomic initialization wait mechanism (safety improvement) 
Implements thread-safe atomic initialization tracking and a wait helper for
non-init threads to avoid libc fallback during the initialization window.

Changes:
- Convert g_initializing to _Atomic type for thread-safe access
- Add g_init_thread to identify which thread performs initialization
- Implement hak_init_wait_for_ready() helper with spin/yield mechanism
- Update hak_core_init.inc.h to use atomic operations
- Update hak_wrappers.inc.h to call wait helper instead of checking g_initializing

Results & Analysis:
- Performance: ±0% (21s → 21s, no measurable improvement)
- Safety: ✓ Prevents recursion in init window
- Investigation: Initialization overhead is <1% of total allocations
  - Expected: 2-8% improvement
  - Actual: 0% improvement (spin/yield overhead ≈ savings)
  - libc overhead: 41% → 57% (relative increase, likely sampling variation)

Key Findings from Perf Analysis:
- getenv: 0% (maintained from Phase 1-1) ✓
- libc malloc/free: ~24.54% of cycles
- libc fragmentation (malloc_consolidate/unlink_chunk): ~16% of cycles
- Total libc overhead: ~41% (difficult to optimize without changing algorithm)

Next Phase Target:
- Phase 2: Investigate libc fragmentation (malloc_consolidate 9.33%, unlink_chunk 6.90%)
- Potential approaches: hakmem Mid/ACE allocator expansion, sh8bench pattern analysis

Recommendation: Keep Phase 1-2 for safety (no performance regression), proceed to Phase 2.

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

Co-Authored-By: Claude <noreply@anthropic.com>
2025-12-02 16:44:27 +09:00
..
ace_pool_connector.c
Tiny: fix header/stride mismatch and harden refill paths
2025-11-09 18:55:50 +09:00
ace_pool_connector.h
Tiny: fix header/stride mismatch and harden refill paths
2025-11-09 18:55:50 +09:00
adopt_gate_box.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
bench_fast_box.c
Phase 8-TLS-Fix: BenchFast crash root cause fixes
2025-11-30 05:12:32 +09:00
bench_fast_box.h
Phase 8-TLS-Fix: BenchFast crash root cause fixes
2025-11-30 05:12:32 +09:00
capacity_box.c
Phase 3d-B: TLS Cache Merge - Unified g_tls_sll[] structure (+12-18% expected)
2025-11-20 07:32:30 +09:00
capacity_box.d
feat: Add ACE allocation failure tracing and debug hooks
2025-12-01 16:37:59 +09:00
capacity_box.h
Box API Phase 1-3: Capacity Manager, Carve-Push, Prewarm 実装
2025-11-13 01:45:30 +09:00
carve_push_box.c
Bugfix: Add Header Box and fix Class 0/7 header handling (crash rate -50%)
2025-11-29 07:57:49 +09:00
carve_push_box.d
feat: Add ACE allocation failure tracing and debug hooks
2025-12-01 16:37:59 +09:00
carve_push_box.h
Box API Phase 1-3: Capacity Manager, Carve-Push, Prewarm 実装
2025-11-13 01:45:30 +09:00
external_guard_box.h
Phase 3: Remove mincore() syscall completely
2025-11-29 09:04:32 +09:00
fg_tiny_gate_box.h
fix: guard Tiny FG misclass and add fg_tiny_gate box
2025-12-01 16:05:55 +09:00
free_local_box.c
Phase 9-2: Remove Legacy Backend & Unify to Shared Pool (50M ops/s)
2025-12-01 13:47:23 +09:00
free_local_box.d
Refactor: Clean up SuperSlab shared pool code
2025-11-30 15:27:53 +09:00
free_local_box.h
feat: Add ACE allocation failure tracing and debug hooks
2025-12-01 16:37:59 +09:00
free_publish_box.c
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
free_publish_box.d
feat: Add ACE allocation failure tracing and debug hooks
2025-12-01 16:37:59 +09:00
free_publish_box.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
free_remote_box.c
Code Cleanup: Remove false positives, redundant validations, and reduce verbose logging
2025-11-21 23:00:24 +09:00
free_remote_box.d
Remove dead code: UltraHot, RingCache, FrontC23, Class5 Hotpath
2025-11-26 12:33:49 +09:00
free_remote_box.h
feat: Add ACE allocation failure tracing and debug hooks
2025-12-01 16:37:59 +09:00
front_gate_box.c
Phase 3d-B: TLS Cache Merge - Unified g_tls_sll[] structure (+12-18% expected)
2025-11-20 07:32:30 +09:00
front_gate_box.d
feat: Add ACE allocation failure tracing and debug hooks
2025-12-01 16:37:59 +09:00
front_gate_box.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
front_gate_classifier.c
Fix mid free routing and relax mid W_MAX
2025-12-01 22:06:10 +09:00
front_gate_classifier.d
feat: Add ACE allocation failure tracing and debug hooks
2025-12-01 16:37:59 +09:00
front_gate_classifier.h
Phase 23 Unified Cache + PageFaultTelemetry generalization: Mid/VM page-fault bottleneck identified
2025-11-17 02:47:58 +09:00
front_gate_v2.h
Phase 15: Box Separation (partial) - Box headers completed, routing deferred
2025-11-15 22:08:51 +09:00
front_metrics_box.c
ENV cleanup: Add RELEASE guards to DEBUG ENV variables (14 vars)
2025-11-27 03:41:07 +09:00
front_metrics_box.d
Phase 21-1-B: Ring cache Alloc/Free 統合 - C2/C3 hot path integration
2025-11-16 07:51:37 +09:00
front_metrics_box.h
ENV cleanup: Remove obsolete ULTRAHOT variable + organize docs
2025-11-26 17:12:41 +09:00
hak_alloc_api.inc.h
Remove unused Mid MT layer
2025-12-01 23:43:44 +09:00
hak_core_init.inc.h
feat(Phase 1-2): Add atomic initialization wait mechanism (safety improvement)
2025-12-02 16:44:27 +09:00
hak_exit_debug.inc.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
hak_free_api.inc.h
fix: guard Tiny FG misclass and add fg_tiny_gate box
2025-12-01 16:05:55 +09:00
hak_kpi_util.inc.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
hak_wrappers.inc.h
feat(Phase 1-2): Add atomic initialization wait mechanism (safety improvement)
2025-12-02 16:44:27 +09:00
integrity_box.c
Phase 3d-B: TLS Cache Merge - Unified g_tls_sll[] structure (+12-18% expected)
2025-11-20 07:32:30 +09:00
integrity_box.d
feat: Add ACE allocation failure tracing and debug hooks
2025-12-01 16:37:59 +09:00
integrity_box.h
Add Box I (Integrity), Box E (Expansion), and comprehensive P0 debugging infrastructure
2025-11-12 02:45:00 +09:00
mailbox_box.c
Phase 4c: Add master trace control (HAKMEM_TRACE)
2025-11-28 16:08:44 +09:00
mailbox_box.d
feat: Add ACE allocation failure tracing and debug hooks
2025-12-01 16:37:59 +09:00
mailbox_box.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
mid_large_config_box.h
Phase 5-Step3: Mid/Large Config Box (future workload optimization)
2025-11-29 14:39:07 +09:00
pagefault_telemetry_box.c
Phase 23 Unified Cache + PageFaultTelemetry generalization: Mid/VM page-fault bottleneck identified
2025-11-17 02:47:58 +09:00
pagefault_telemetry_box.d
Phase 23 Unified Cache + PageFaultTelemetry generalization: Mid/VM page-fault bottleneck identified
2025-11-17 02:47:58 +09:00
pagefault_telemetry_box.h
Phase 23 Unified Cache + PageFaultTelemetry generalization: Mid/VM page-fault bottleneck identified
2025-11-17 02:47:58 +09:00
pool_api.inc.h
Fix mid free routing and relax mid W_MAX
2025-12-01 22:06:10 +09:00
pool_init_api.inc.h
Fix mid free routing and relax mid W_MAX
2025-12-01 22:06:10 +09:00
pool_mf2_adoption.inc.h
Phase 1: Box Theory refactoring + include reduction
2025-11-06 21:54:12 +09:00
pool_mf2_helpers.inc.h
Phase 1: Box Theory refactoring + include reduction
2025-11-06 21:54:12 +09:00
pool_mf2_types.inc.h
Phase 1: Box Theory refactoring + include reduction
2025-11-06 21:54:12 +09:00
pool_mid_desc.inc.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
pool_mid_tc.inc.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
pool_refill.inc.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
pool_stats.inc.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
pool_tls_core.inc.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
pool_tls_types.inc.h
Phase 1: Box Theory refactoring + include reduction
2025-11-06 21:54:12 +09:00
prewarm_box.c
Phase 3d-B: TLS Cache Merge - Unified g_tls_sll[] structure (+12-18% expected)
2025-11-20 07:32:30 +09:00
prewarm_box.d
feat: Add ACE allocation failure tracing and debug hooks
2025-12-01 16:37:59 +09:00
prewarm_box.h
Box API Phase 1-3: Capacity Manager, Carve-Push, Prewarm 実装
2025-11-13 01:45:30 +09:00
ptr_conversion_box.h
Phase E3-FINAL: Fix Box API offset bugs - ALL classes now use correct offsets
2025-11-13 06:50:20 +09:00
ptr_trace_box.h
Tiny Pool redesign: P0.1, P0.3, P1.1, P1.2 - Out-of-band class_idx lookup
2025-11-28 13:42:39 +09:00
ptr_type_box.h
feat: Add ACE allocation failure tracing and debug hooks
2025-12-01 16:37:59 +09:00
slab_freelist_atomic.h
Adaptive CAS: Single-threaded fast path optimization
2025-11-22 03:30:47 +09:00
slab_recycling_box.c
Phase 9: SuperSlab optimization & EMPTY slab recycling (WIP)
2025-11-30 07:16:50 +09:00
slab_recycling_box.h
Phase 9: SuperSlab optimization & EMPTY slab recycling (WIP)
2025-11-30 07:16:50 +09:00
sp_rebind_slot_box.h
Phase 9-3: Box Theory refactoring (TLS_SLL_DUP root fix)
2025-11-30 10:48:50 +09:00
ss_ace_box.c
Phase 3d-B: TLS Cache Merge - Unified g_tls_sll[] structure (+12-18% expected)
2025-11-20 07:32:30 +09:00
ss_ace_box.h
Phase 3d-B: TLS Cache Merge - Unified g_tls_sll[] structure (+12-18% expected)
2025-11-20 07:32:30 +09:00
ss_addr_map_box.c
Phase 9: SuperSlab optimization & EMPTY slab recycling (WIP)
2025-11-30 07:16:50 +09:00
ss_addr_map_box.h
Phase 9: SuperSlab optimization & EMPTY slab recycling (WIP)
2025-11-30 07:16:50 +09:00
ss_allocation_box.c
P2: TLS SLL Redesign - class_map default, tls_cached tracking, conditional header restore
2025-11-28 14:11:37 +09:00
ss_allocation_box.h
Phase 3d-B: TLS Cache Merge - Unified g_tls_sll[] structure (+12-18% expected)
2025-11-20 07:32:30 +09:00
ss_cache_box.c
Phase 3d-B: TLS Cache Merge - Unified g_tls_sll[] structure (+12-18% expected)
2025-11-20 07:32:30 +09:00
ss_cache_box.h
Phase 3d-B: TLS Cache Merge - Unified g_tls_sll[] structure (+12-18% expected)
2025-11-20 07:32:30 +09:00
ss_hot_cold_box.h
P2: TLS SLL Redesign - class_map default, tls_cached tracking, conditional header restore
2025-11-28 14:11:37 +09:00
ss_hot_prewarm_box.c
Phase 26: Front Gate Unification - Tiny allocator fast path (+12.9%)
2025-11-17 05:29:08 +09:00
ss_hot_prewarm_box.d
feat: Add ACE allocation failure tracing and debug hooks
2025-12-01 16:37:59 +09:00
ss_hot_prewarm_box.h
Phase 19 & 20-1: Frontend optimization + TLS cache prewarm (+16.2% total)
2025-11-16 05:48:59 +09:00
ss_os_acquire_box.c
Phase 3d-B: TLS Cache Merge - Unified g_tls_sll[] structure (+12-18% expected)
2025-11-20 07:32:30 +09:00
ss_os_acquire_box.h
Phase 3d-B: TLS Cache Merge - Unified g_tls_sll[] structure (+12-18% expected)
2025-11-20 07:32:30 +09:00
ss_slab_management_box.c
Phase 3d-B: TLS Cache Merge - Unified g_tls_sll[] structure (+12-18% expected)
2025-11-20 07:32:30 +09:00
ss_slab_management_box.h
Phase 3d-B: TLS Cache Merge - Unified g_tls_sll[] structure (+12-18% expected)
2025-11-20 07:32:30 +09:00
ss_slab_meta_box.h
Phase 1: Atomic Freelist Implementation - MT Safety Foundation
2025-11-22 02:46:57 +09:00
ss_stats_box.c
Phase 3d-B: TLS Cache Merge - Unified g_tls_sll[] structure (+12-18% expected)
2025-11-20 07:32:30 +09:00
ss_stats_box.h
Phase 3d-B: TLS Cache Merge - Unified g_tls_sll[] structure (+12-18% expected)
2025-11-20 07:32:30 +09:00
ss_tls_hint_box.c
Phase 9: SuperSlab optimization & EMPTY slab recycling (WIP)
2025-11-30 07:16:50 +09:00
ss_tls_hint_box.h
Phase 9: SuperSlab optimization & EMPTY slab recycling (WIP)
2025-11-30 07:16:50 +09:00
superslab_expansion_box.c
Tiny Pool redesign: P0.1, P0.3, P1.1, P1.2 - Out-of-band class_idx lookup
2025-11-28 13:42:39 +09:00
superslab_expansion_box.d
Remove dead code: UltraHot, RingCache, FrontC23, Class5 Hotpath
2025-11-26 12:33:49 +09:00
superslab_expansion_box.h
Add Box I (Integrity), Box E (Expansion), and comprehensive P0 debugging infrastructure
2025-11-12 02:45:00 +09:00
superslab_lookup_box.h
Refactor: Phase 2 Box化 - SuperSlab Lookup Box with multiple contract levels
2025-11-29 08:44:29 +09:00
tiny_adopt_refill_box.h
Extract adopt/refill boundary into tiny_adopt_refill_box
2025-11-30 11:06:44 +09:00
tiny_env_box.c
feat(Phase 1-1): Complete getenv elimination from malloc/free hot paths (+39-42% perf)
2025-12-02 16:16:51 +09:00
tiny_env_box.h
feat(Phase 1-1): Complete getenv elimination from malloc/free hot paths (+39-42% perf)
2025-12-02 16:16:51 +09:00
tiny_front_cold_box.h
Phase 4-Step2: Add Hot/Cold Path Box (+7.3% performance)
2025-11-29 11:58:37 +09:00
tiny_front_config_box.h
Phase 8-Step1-3: Unified Cache hot path optimization (config macro + prewarm + PGO init removal)
2025-11-29 17:58:42 +09:00
tiny_front_hot_box.h
Phase 4-Step2: Add Hot/Cold Path Box (+7.3% performance)
2025-11-29 11:58:37 +09:00
tiny_geometry_box.h
Phase 9-3: Box Theory refactoring (TLS_SLL_DUP root fix)
2025-11-30 10:48:50 +09:00
tiny_guard_box.h
Phase 9-3: Box Theory refactoring (TLS_SLL_DUP root fix)
2025-11-30 10:48:50 +09:00
tiny_header_box.h
Bugfix: Add Header Box and fix Class 0/7 header handling (crash rate -50%)
2025-11-29 07:57:49 +09:00
tiny_near_empty_box.c
Phase 3d-B: TLS Cache Merge - Unified g_tls_sll[] structure (+12-18% expected)
2025-11-20 07:32:30 +09:00
tiny_near_empty_box.h
Phase 3d-B: TLS Cache Merge - Unified g_tls_sll[] structure (+12-18% expected)
2025-11-20 07:32:30 +09:00
tiny_next_ptr_box.h
Tiny Pool redesign: P0.1, P0.3, P1.1, P1.2 - Out-of-band class_idx lookup
2025-11-28 13:42:39 +09:00
tiny_sizeclass_hist_box.c
Phase 3d-B: TLS Cache Merge - Unified g_tls_sll[] structure (+12-18% expected)
2025-11-20 07:32:30 +09:00
tiny_sizeclass_hist_box.d
Phase 3d-B: TLS Cache Merge - Unified g_tls_sll[] structure (+12-18% expected)
2025-11-20 07:32:30 +09:00
tiny_sizeclass_hist_box.h
Phase 3d-B: TLS Cache Merge - Unified g_tls_sll[] structure (+12-18% expected)
2025-11-20 07:32:30 +09:00
tls_slab_reuse_guard_box.h
Tiny Pool redesign: P0.1, P0.3, P1.1, P1.2 - Out-of-band class_idx lookup
2025-11-28 13:42:39 +09:00
tls_sll_box.h
feat: Add ACE allocation failure tracing and debug hooks
2025-12-01 16:37:59 +09:00
tls_sll_drain_box.h
Phase 9-2: Remove Legacy Backend & Unify to Shared Pool (50M ops/s)
2025-12-01 13:47:23 +09:00
ultra_slim_alloc_box.h
Phase 19-2: Ultra SLIM debug logging and root cause analysis
2025-11-22 06:50:38 +09:00
unified_batch_box.c
Phase 23 Unified Cache + PageFaultTelemetry generalization: Mid/VM page-fault bottleneck identified
2025-11-17 02:47:58 +09:00
unified_batch_box.d
feat: Add ACE allocation failure tracing and debug hooks
2025-12-01 16:37:59 +09:00
unified_batch_box.h
Phase 23 Unified Cache + PageFaultTelemetry generalization: Mid/VM page-fault bottleneck identified
2025-11-17 02:47:58 +09:00
wrapper_env_box.c
feat(Phase 1-1): Complete getenv elimination from malloc/free hot paths (+39-42% perf)
2025-12-02 16:16:51 +09:00
wrapper_env_box.h
feat(Phase 1-1): Complete getenv elimination from malloc/free hot paths (+39-42% perf)
2025-12-02 16:16:51 +09:00