c60199182e
Phase v6-1: C6-only route stub (v1/pool fallback) Phase v6-2: Segment v6 + ColdIface v6 + Core v6 HotPath implementation - 2MiB segment / 64KiB page allocation - O(1) ptr→page_meta lookup with segment masking - C6-heavy A/B: SEGV-free but -44% performance (15.3M ops/s) Phase v6-3: Thin-layer optimization (TLS ownership check + batch header + refill batching) - TLS ownership fast-path skip page_meta for 90%+ of frees - Batch header writes during refill (32 allocs = 1 header write) - TLS batch refill (1/32 refill frequency) - C6-heavy A/B: v6-2 15.3M → v6-3 27.1M ops/s (±0% vs baseline) ✅ Phase v6-4: Mixed hang fix (segment metadata lookup correction) - Root cause: metadata lookup was reading mmap region instead of TLS slot - Fix: use TLS slot descriptor with in_use validation - Mixed health: 5M iterations SEGV-free, 35.8M ops/s ✅ Phase v6-refactor: Code quality improvements (macro unification + inline + docs) - Add SMALL_V6_* prefix macros (header, pointer conversion, page index) - Extract inline validation functions (small_page_v6_valid, small_ptr_in_segment_v6) - Doxygen-style comments for all public functions - Result: 0 compiler warnings, maintained +1.2% performance Files: - core/box/smallobject_core_v6_box.h (new, type & API definitions) - core/box/smallobject_cold_iface_v6.h (new, cold iface API) - core/box/smallsegment_v6_box.h (new, segment type definitions) - core/smallobject_core_v6.c (new, C6 alloc/free implementation) - core/smallobject_cold_iface_v6.c (new, refill/retire logic) - core/smallsegment_v6.c (new, segment allocator) - docs/analysis/SMALLOBJECT_CORE_V6_DESIGN.md (new, design document) - core/box/tiny_route_env_box.h (modified, v6 route added) - core/front/malloc_tiny_fast.h (modified, v6 case in route switch) - Makefile (modified, v6 objects added) - CURRENT_TASK.md (modified, v6 status added) Status: - C6-heavy: v6 OFF 27.1M → v6-3 ON 27.1M ops/s (±0%) ✅ - Mixed: v6 ON 35.8M ops/s (C6-only, other classes via v1) ✅ - Build: 0 warnings, fully documented ✅ 🤖 Generated with Claude Code Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
4.3 MiB
4.3 MiB