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>
53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
// capacity_box.h - Box Capacity Manager
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// Priority 1 Box: TLS Cache Capacity Management
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//
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// Purpose:
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// - Centralize all capacity calculations (adaptive sizing, SLL cap, etc.)
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// - Prevent initialization order bugs (root cause of prewarm double-free)
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// - Provide simple, safe API for capacity queries
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//
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// Design:
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// - Wraps adaptive_sizing system
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// - Idempotent initialization
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// - Bounds checking built-in
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// - Thread-safe (uses TLS)
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#ifndef HAKMEM_BOX_CAPACITY_H
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#define HAKMEM_BOX_CAPACITY_H
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#include <stdint.h>
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#include <stdbool.h>
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// ============================================================================
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// Box Capacity API
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// ============================================================================
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// Initialize capacity system (idempotent - safe to call multiple times)
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// MUST be called before any other box_cap_* functions
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void box_cap_init(void);
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// Get current TLS SLL capacity for a class
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// Returns: capacity in blocks, or 0 if not initialized
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// Thread-safe: uses TLS
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uint32_t box_cap_get(int class_idx);
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// Check if TLS SLL has room for N blocks
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// Returns: true if N blocks can be added, false otherwise
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// Thread-safe: uses TLS
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bool box_cap_has_room(int class_idx, uint32_t n);
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// Get available space in TLS SLL
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// Returns: number of blocks that can be added
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// Thread-safe: uses TLS
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uint32_t box_cap_avail(int class_idx);
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// Update capacity (adaptive sizing hook)
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// Note: Normally called by adaptive sizing system, not manually
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void box_cap_update(int class_idx, uint32_t new_cap);
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// Check if capacity system is initialized
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// Returns: true if box_cap_init() was called
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bool box_cap_is_initialized(void);
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#endif // HAKMEM_BOX_CAPACITY_H
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