a78224123e
Fix C0/C7 class confusion: Upgrade C7 stride to 2048B and fix meta->class_idx initialization
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Root Cause:
1. C7 stride was 1024B, unable to serve 1024B user requests (need 1025B with header)
2. New SuperSlabs start with meta->class_idx=0 (mmap zero-init)
3. superslab_init_slab() only sets class_idx if meta->class_idx==255
4. Multiple code paths used conditional assignment (if class_idx==255), leaving C7 slabs with class_idx=0
5. This caused C7 blocks to be misidentified as C0, leading to HDR_META_MISMATCH errors
Changes:
1. Upgrade C7 stride: 1024B → 2048B (can now serve 1024B requests)
2. Update blocks_per_slab[7]: 64 → 32 (2048B stride / 64KB slab)
3. Update size-to-class LUT: entries 513-2048 now map to C7
4. Fix superslab_init_slab() fail-safe: only reinitialize if class_idx==255 (not 0)
5. Add explicit class_idx assignment in 6 initialization paths:
- tiny_superslab_alloc.inc.h: superslab_refill() after init
- hakmem_tiny_superslab.c: backend_shared after init (main path)
- ss_unified_backend_box.c: unconditional assignment
- ss_legacy_backend_box.c: explicit assignment
- superslab_expansion_box.c: explicit assignment
- ss_allocation_box.c: fail-safe condition fix
Fix P0 refill bug:
- Update obsolete array access after Phase 3d-B TLS SLL unification
- g_tls_sll_head[cls] → g_tls_sll[cls].head
- g_tls_sll_count[cls] → g_tls_sll[cls].count
Results:
- HDR_META_MISMATCH: eliminated (0 errors in 100K iterations)
- 1024B allocations now routed to C7 (Tiny fast path)
- NXT_MISALIGN warnings remain (legacy 1024B SuperSlabs, separate issue)
🤖 Generated with [Claude Code](https://claude.com/claude-code )
Co-Authored-By: Claude <noreply@anthropic.com >
2025-11-21 13:44:05 +09:00
6b6ad69aca
Refactor: Extract 5 Box modules from hakmem_tiny.c (-52% size reduction)
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Split hakmem_tiny.c (2081 lines) into focused modules for better maintainability.
## Changes
**hakmem_tiny.c**: 2081 → 995 lines (-1086 lines, -52% reduction)
## Extracted Modules (5 boxes)
1. **config_box** (211 lines)
- Size class tables, integrity counters
- Debug flags, benchmark macros
- HAK_RET_ALLOC/HAK_STAT_FREE instrumentation
2. **publish_box** (419 lines)
- Publish/Adopt counters and statistics
- Bench mailbox, partial ring
- Live cap/Hot slot management
- TLS helper functions (tiny_tls_default_*)
3. **globals_box** (256 lines)
- Global variable declarations (~70 variables)
- TinyPool instance and initialization flag
- TLS variables (g_tls_lists, g_fast_head, g_fast_count)
- SuperSlab configuration (partial ring, empty reserves)
- Adopt gate functions
4. **phase6_wrappers_box** (122 lines)
- Phase 6 Box Theory wrapper layer
- hak_tiny_alloc_fast_wrapper()
- hak_tiny_free_fast_wrapper()
- Diagnostic instrumentation
5. **ace_guard_box** (100 lines)
- ACE Learning Layer (hkm_ace_set_drain_threshold)
- FastCache API (tiny_fc_room, tiny_fc_push_bulk)
- Tiny Guard debugging system (5 functions)
## Benefits
- **Readability**: Giant 2k file → focused 1k core + 5 coherent modules
- **Maintainability**: Each box has clear responsibility and boundaries
- **Build**: All modules compile successfully ✅
## Technical Details
- Phase 1: ChatGPT extracted config_box + publish_box (-625 lines)
- Phase 2-4: Claude extracted globals_box + phase6_wrappers_box + ace_guard_box (-461 lines)
- All extractions use .inc files (same translation unit, preserves static/TLS linkage)
- Fixed Makefile: Added tiny_sizeclass_hist_box.o to OBJS_BASE and BENCH_HAKMEM_OBJS_BASE
🤖 Generated with [Claude Code](https://claude.com/claude-code )
Co-Authored-By: Claude <noreply@anthropic.com >
2025-11-21 01:16:45 +09:00
