c7616fd161
Priority 1-3のBox Modulesを実装し、安全なpre-warming APIを提供。
既存の複雑なprewarmコードを1行のBox API呼び出しに置き換え。
## 新規Box Modules
1. **Box Capacity Manager** (capacity_box.h/c)
- TLS SLL容量の一元管理
- adaptive_sizing初期化保証
- Double-free バグ防止
2. **Box Carve-And-Push** (carve_push_box.h/c)
- アトミックなblock carve + TLS SLL push
- All-or-nothing semantics
- Rollback保証（partial failure防止）
3. **Box Prewarm** (prewarm_box.h/c)
- 安全なTLS cache pre-warming
- 初期化依存性を隠蔽
- シンプルなAPI (1関数呼び出し)
## コード簡略化
hakmem_tiny_init.inc: 20行 → 1行
```c
// BEFORE: 複雑なP0分岐とエラー処理
adaptive_sizing_init();
if (prewarm > 0) {
#if HAKMEM_TINY_P0_BATCH_REFILL
int taken = sll_refill_batch_from_ss(5, prewarm);
#else
int taken = sll_refill_small_from_ss(5, prewarm);
#endif
}
// AFTER: Box API 1行
int taken = box_prewarm_tls(5, prewarm);
```
## シンボルExport修正
hakmem_tiny.c: 5つのシンボルをstatic → non-static
- g_tls_slabs[] (TLS slab配列)
- g_sll_multiplier (SLL容量乗数)
- g_sll_cap_override[] (容量オーバーライド)
- superslab_refill() (SuperSlab再充填)
- ss_active_add() (アクティブカウンタ)
## ビルドシステム
Makefile: TINY_BENCH_OBJS_BASEに3つのBox modules追加
- core/box/capacity_box.o
- core/box/carve_push_box.o
- core/box/prewarm_box.o
## 動作確認
✅ Debug build成功
✅ Box Prewarm API動作確認
[PREWARM] class=5 requested=128 taken=32
## 次のステップ
- Box Refill Manager (Priority 4)
- Box SuperSlab Allocator (Priority 5)
- Release build修正（tiny_debug_ring_record）
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
// carve_push_box.h - Box Carve-And-Push
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// Priority 2 Box: Atomic Block Carving and TLS SLL Push
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//
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// Purpose:
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// - Prevent rollback bugs (root cause of 20-carved-but-16-pushed issue)
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// - Atomic operation: carve + header + push (all-or-nothing)
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// - Eliminate partial failures that leave orphaned blocks
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//
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// Design:
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// - Wraps trc_linear_carve() + tls_sll_push()
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// - Rollback on any failure
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// - Active counter management built-in
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// - Clear error reporting
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#ifndef HAKMEM_BOX_CARVE_PUSH_H
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#define HAKMEM_BOX_CARVE_PUSH_H
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#include <stdint.h>
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#include <stdbool.h>
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// ============================================================================
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// Box Carve-Push API
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// ============================================================================
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// Carve N blocks from current TLS slab and atomically push to TLS SLL
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//
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// Guarantees:
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// - All-or-nothing: either all N blocks are pushed, or none
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// - No orphaned blocks (carved but not pushed)
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// - Headers written correctly before push
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// - Active counters updated atomically
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//
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// Returns: actual count pushed
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// - On success: want (all blocks pushed)
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// - On failure: 0 (rolled back, no blocks pushed)
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//
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// Failure cases:
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// - No SuperSlab available
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// - Slab exhausted (capacity reached)
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// - TLS SLL capacity exceeded
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// - Invalid class_idx
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//
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// Thread-safe: uses TLS
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uint32_t box_carve_and_push(int class_idx, uint32_t want);
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// Variant: carve and push with freelist fallback
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// If slab is exhausted, tries to pop from freelist first
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// Same guarantees as box_carve_and_push()
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uint32_t box_carve_and_push_with_freelist(int class_idx, uint32_t want);
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#endif // HAKMEM_BOX_CARVE_PUSH_H
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