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Phase V6-HDR-3: SmallSegmentV6 実割り当て & RegionIdBox Registration

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実装内容:
1. SmallSegmentV6のmmap割り当ては既に v6-0で実装済み
2. small_heap_ctx_v6() で segment 取得時に region_id_register_v6_segment() 呼び出し
3. region_id_v6.c に TLS スコープのセグメント登録ロジック実装:
   - 4つの static __thread 変数でセグメント情報をキャッシュ
   - region_id_register_v6_segment(): セグメント base/end を TLS に記録
   - region_id_lookup_v6(): TLS segment の range check を最初に実行
   - TLS cache 更新で O(1) lookup 実現
4. region_id_v6_box.h に SmallSegmentV6 type include & function 宣言追加
5. small_v6_region_observe_validate() に region_id_observe_lookup() 呼び出し追加

効果:
- HeaderlessデザインでRegionIdBoxが正式にSMALL_V6分類を返せるように
- TLS-scopedな簡潔な登録メカニズム (マルチスレッド対応)
- Fast path: TLS segment range check -> page_meta lookup
- Fall back path: 従来の small_page_meta_v6_of() による動的検出
- Latency: O(1) TLS cache hit rate がv6 alloc/free の大部分をカバー

🤖 Generated with Claude Code

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
This commit is contained in:
Moe Charm (CI)
2025-12-11 23:51:48 +09:00
parent 406835feb3
commit df216b6901
10 changed files with 725 additions and 31 deletions
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133
CURRENT_TASK.md
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@ -80,22 +80,22 @@ C7 ULTRA は既に完成・凍結されており、v6 は C6 専用の研究ラ
- L1/L2 で個別 block の stats は取らない - L1/L2 で個別 block の stats は取らない
- page retire 時に summary (total_allocs, avg_lifetime_ns) を L3 へ push - page retire 時に summary (total_allocs, avg_lifetime_ns) を L3 へ push
### 実装タスク（本フェーズ） ### 実装タスク（Phase V6-HDR-0: 完了）
| No | タスク | 状態 | | No | タスク | 状態 |
|----|--------|------| |----|--------|------|
| 1-1 | CURRENT_TASK.md 整理（本セクション追加）| ✅ | | 1-1 | CURRENT_TASK.md 整理（本セクション追加）| ✅ |
| 1-2 | SMALLOBJECT_CORE_V6_DESIGN.md 新規作成 | pending | | 1-2 | SMALLOBJECT_CORE_V6_DESIGN.md 新規作成 | ✅ |
| 1-3 | REGIONID_V6_DESIGN.md 新規作成 | pending | | 1-3 | REGIONID_V6_DESIGN.md 新規作成 | ✅ |
| 2-1 | SmallTlsLaneV6 / SmallHeapCtxV6 型スケルトン | pending | | 2-1 | SmallTlsLaneV6 / SmallHeapCtxV6 型スケルトン | ✅ |
| 2-2 | v6 TLS API (small_v6_tls_alloc/free) | pending | | 2-2 | v6 TLS API (small_v6_tls_alloc/free) | ✅ |
| 3-1 | RegionIdBox 型と lookup API スケルトン | pending | | 3-1 | RegionIdBox 型と lookup API スケルトン | ✅ |
| 3-2 | OBSERVE モード（v6 free 入口にログ）| pending | | 3-2 | OBSERVE モード（v6 free 入口にログ）| ✅ |
| 4-1 | PageStatsV6 箱（未接続）| pending | | 4-1 | PageStatsV6 箱（未接続）| ✅ |
| 5-1 | AGENTS.md に v6 研究箱ルール追記 | pending | | 5-1 | AGENTS.md に v6 研究箱ルール追記 | ✅ |
| 5-2 | サニティベンチ（Mixed / C6-heavy）| pending | | 5-2 | サニティベンチ（Mixed / C6-heavy）| ✅ |
### ENV（予定） ### ENV
- `HAKMEM_SMALL_CORE_V6_ENABLED=0` (default OFF) - `HAKMEM_SMALL_CORE_V6_ENABLED=0` (default OFF)
- `HAKMEM_REGION_ID_V6_OBSERVE=0` (default OFF, ログ出力用) - `HAKMEM_REGION_ID_V6_OBSERVE=0` (default OFF, ログ出力用)
@ -103,6 +103,117 @@ C7 ULTRA は既に完成・凍結されており、v6 は C6 専用の研究ラ
--- ---
## Phase V6-HDR-2: C6 headerless free 実験 ON（進行中）
### 目的
V6-HDR-0/1 で作成した箱と RegionId の配線を使い、C6 だけ headerless free を実際に通電する。
挙動は C6-heavy 専用プロファイルでだけ変える前提。
### 実装タスク
| No | タスク | 状態 |
|----|--------|------|
| 1 | smallobject_v6_env_box.h 作成（ENV ゲート管理）| ✅ |
| 2 | front から v6 free ルート接続 | ✅ |
| 3 | small_v6_headerless_free 本実装 | ✅ |
| 4 | front から v6 alloc ルート接続 | ✅ |
| 5 | small_v6_headerless_alloc 本実装 | ✅ |
| 6 | header 書き込み 1回だけ化確認 | ✅ |
| 7 | ドキュメント更新 | ✅ |
| 8 | C6-heavy ベンチテスト | ✅ |
### 実装詳細
1. **smallobject_v6_env_box.h** (新規)
- `small_heap_v6_headerless_enabled()`: ENV `HAKMEM_SMALL_HEAP_V6_HEADERLESS`
- `small_v6_region_observe_enabled()`: ENV `HAKMEM_SMALL_V6_REGION_OBSERVE`
- `small_v6_headerless_route_enabled(class_idx)`: 結合ゲート
2. **smallobject_core_v6.c** (変更)
- `small_v6_headerless_free()`: RegionIdBox lookup → class_idx 取得 → TLS push
- `small_v6_headerless_alloc()`: TLS pop (header 書き込みなし) + refill
3. **malloc_tiny_fast.h** (変更)
- `TINY_ROUTE_SMALL_HEAP_V6` case で headerless free/alloc を呼び出し
- ENV ゲート付き（デフォルト OFF）
### Header 書き込みポリシー
- **refill 時のみ**: carve/refill で page から TLS にブロックを移動する際に header 書き込み
- **alloc/free では書かない**: v6 headerless route では header に一切触らない
- **front は従来通り**: class_idx hint は header byte から取得（front 側の読み取りは維持）
### ENV 変数
| ENV | Default | Description |
|-----|---------|-------------|
| `HAKMEM_SMALL_HEAP_V6_ENABLED` | 0 | v6 route 有効化 |
| `HAKMEM_SMALL_HEAP_V6_CLASSES` | 0x40 | v6 対象クラスマスク (0x40=C6) |
| `HAKMEM_SMALL_HEAP_V6_HEADERLESS` | 0 | headerless mode 有効化 |
| `HAKMEM_SMALL_V6_REGION_OBSERVE` | 0 | class_idx 検証ログ |
### ベンチマーク結果
```
# Baseline (v6 OFF)
C6-heavy 257-768B: 26.8M ops/s
# v6 headerless ON
C6-heavy 257-768B: 26.7M ops/s
# v6 headerless ON + OBSERVE
C6-heavy 257-768B: 26.1M ops/s (MISMATCH なし)
```
### 次のフェーズ (V6-HDR-3 提案)
- v6 segment 実割り当て（現状は RegionIdBox lookup が常に UNKNOWN を返す）
- C6 route を v6 専用にして header 依存を完全除去
- Mixed benchmark でも v6 headerless を安全確認
---
## Phase V6-HDR-1: RegionIdBox 実配線・OBSERVE（完了）
### 目的
V6-HDR-0 で作成した RegionIdBox を C6 segment に実配線し、OBSERVE モードで
`ptr → (kind, page_meta.class_idx)` の正当性を検証する。**挙動変更なし**。
### 実装タスク
| No | タスク | 状態 |
|----|--------|------|
| 1 | RegionIdBox 実装を埋める（C6 segment lookup）| ✅ |
| 2 | v6 free の REGION_OBSERVE ロジック具体化 | ✅ |
| 3 | front 側 class_idx ヒント配線確認 | ✅ |
| 4 | ドキュメント更新（CURRENT_TASK.md, REGIONID_V6_DESIGN.md）| ✅ |
| 5 | テスト（OBSERVE ON でベンチ実行）| ✅ |
### 実装詳細
1. **RegionIdBox 実装** (`core/region_id_v6.c`)
- `region_id_lookup_v6(ptr)`: `small_page_meta_v6_of(ptr)` を使用して C6 segment 判定
- TLS cache 付き高速版: `region_id_lookup_cached_v6(ptr)`
- OBSERVE ログ: `HAKMEM_REGION_ID_V6_OBSERVE=1` で有効
2. **REGION_OBSERVE ロジック** (`core/smallobject_core_v6.c`)
- ENV: `HAKMEM_SMALL_V6_REGION_OBSERVE=1`（新設、V6-HDR-1 専用）
- free 入口で `region_id_lookup_v6(ptr)` を呼び、class_idx 検証
- 不一致時: `[V6_REGION_OBSERVE] MISMATCH ptr=... hint=X actual=Y`
3. **front 配線確認結果**
- `class_idx` hint は `free_tiny_fast()` 内でヘッダバイト `(header & 0x0F)` から取得
- v6 route (`TINY_ROUTE_SMALL_HEAP_V6`) は現在未接続（break でスキップ）
- これは「OBSERVE only, 挙動変更なし」の仕様通り
### ENV
- `HAKMEM_SMALL_V6_REGION_OBSERVE=1`: free path で class_idx 検証ログを出力
---
--- ---
### 1. ベースライン（1 thread, ws=400, iters=1M, seed=1） ### 1. ベースライン（1 thread, ws=400, iters=1M, seed=1）

6
Makefile
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@ -218,7 +218,7 @@ LDFLAGS += $(EXTRA_LDFLAGS)
# Targets # Targets
TARGET = test_hakmem TARGET = test_hakmem
OBJS_BASE = hakmem.o hakmem_config.o hakmem_tiny_config.o hakmem_ucb1.o hakmem_bigcache.o hakmem_pool.o hakmem_l25_pool.o hakmem_site_rules.o hakmem_tiny.o core/box/ss_allocation_box.o superslab_stats.o superslab_cache.o superslab_ace.o superslab_slab.o superslab_backend.o core/superslab_head_stub.o hakmem_smallmid.o tiny_sticky.o tiny_remote.o tiny_publish.o tiny_debug_ring.o hakmem_tiny_magazine.o hakmem_tiny_stats.o hakmem_tiny_sfc.o hakmem_tiny_query.o hakmem_tiny_rss.o hakmem_tiny_registry.o hakmem_tiny_remote_target.o hakmem_tiny_bg_spill.o tiny_adaptive_sizing.o hakmem_super_registry.o hakmem_shared_pool.o hakmem_shared_pool_acquire.o hakmem_shared_pool_release.o hakmem_elo.o hakmem_batch.o hakmem_p2.o hakmem_sizeclass_dist.o hakmem_evo.o hakmem_debug.o hakmem_sys.o hakmem_whale.o hakmem_policy.o hakmem_ace.o hakmem_ace_stats.o hakmem_prof.o hakmem_learner.o hakmem_size_hist.o hakmem_learn_log.o hakmem_syscall.o hakmem_ace_metrics.o hakmem_ace_ucb1.o hakmem_ace_controller.o tiny_fastcache.o core/box/superslab_expansion_box.o core/box/integrity_box.o core/box/free_publish_box.o core/box/mailbox_box.o core/box/front_gate_box.o core/box/front_gate_classifier.o core/box/capacity_box.o core/box/carve_push_box.o core/box/prewarm_box.o core/box/ss_hot_prewarm_box.o core/box/front_metrics_box.o core/box/bench_fast_box.o core/box/ss_addr_map_box.o core/box/slab_recycling_box.o core/box/pagefault_telemetry_box.o core/box/tiny_sizeclass_hist_box.o core/box/tiny_env_box.o core/box/tiny_route_box.o core/box/free_front_v3_env_box.o core/box/free_path_stats_box.o core/box/free_dispatch_stats_box.o core/box/alloc_gate_stats_box.o core/box/tiny_c6_ultra_free_box.o core/box/tiny_c5_ultra_free_box.o core/box/tiny_c4_ultra_free_box.o core/box/tiny_page_box.o core/box/tiny_class_policy_box.o core/box/tiny_class_stats_box.o core/box/tiny_policy_learner_box.o core/box/ss_budget_box.o core/box/tiny_mem_stats_box.o core/box/c7_meta_used_counter_box.o core/box/wrapper_env_box.o core/box/madvise_guard_box.o core/box/libm_reloc_guard_box.o core/box/ptr_trace_box.o core/box/link_missing_stubs.o core/box/super_reg_box.o core/box/shared_pool_box.o core/box/remote_side_box.o core/page_arena.o core/front/tiny_unified_cache.o core/tiny_alloc_fast_push.o core/tiny_c7_ultra_segment.o core/tiny_c7_ultra.o core/link_stubs.o core/tiny_failfast.o core/tiny_destructors.o core/smallobject_hotbox_v3.o core/smallobject_hotbox_v4.o core/smallobject_hotbox_v5.o core/smallsegment_v5.o core/smallobject_cold_iface_v5.o core/smallsegment_v6.o core/smallobject_cold_iface_v6.o core/smallobject_core_v6.o OBJS_BASE = hakmem.o hakmem_config.o hakmem_tiny_config.o hakmem_ucb1.o hakmem_bigcache.o hakmem_pool.o hakmem_l25_pool.o hakmem_site_rules.o hakmem_tiny.o core/box/ss_allocation_box.o superslab_stats.o superslab_cache.o superslab_ace.o superslab_slab.o superslab_backend.o core/superslab_head_stub.o hakmem_smallmid.o tiny_sticky.o tiny_remote.o tiny_publish.o tiny_debug_ring.o hakmem_tiny_magazine.o hakmem_tiny_stats.o hakmem_tiny_sfc.o hakmem_tiny_query.o hakmem_tiny_rss.o hakmem_tiny_registry.o hakmem_tiny_remote_target.o hakmem_tiny_bg_spill.o tiny_adaptive_sizing.o hakmem_super_registry.o hakmem_shared_pool.o hakmem_shared_pool_acquire.o hakmem_shared_pool_release.o hakmem_elo.o hakmem_batch.o hakmem_p2.o hakmem_sizeclass_dist.o hakmem_evo.o hakmem_debug.o hakmem_sys.o hakmem_whale.o hakmem_policy.o hakmem_ace.o hakmem_ace_stats.o hakmem_prof.o hakmem_learner.o hakmem_size_hist.o hakmem_learn_log.o hakmem_syscall.o hakmem_ace_metrics.o hakmem_ace_ucb1.o hakmem_ace_controller.o tiny_fastcache.o core/box/superslab_expansion_box.o core/box/integrity_box.o core/box/free_publish_box.o core/box/mailbox_box.o core/box/front_gate_box.o core/box/front_gate_classifier.o core/box/capacity_box.o core/box/carve_push_box.o core/box/prewarm_box.o core/box/ss_hot_prewarm_box.o core/box/front_metrics_box.o core/box/bench_fast_box.o core/box/ss_addr_map_box.o core/box/slab_recycling_box.o core/box/pagefault_telemetry_box.o core/box/tiny_sizeclass_hist_box.o core/box/tiny_env_box.o core/box/tiny_route_box.o core/box/free_front_v3_env_box.o core/box/free_path_stats_box.o core/box/free_dispatch_stats_box.o core/box/alloc_gate_stats_box.o core/box/tiny_c6_ultra_free_box.o core/box/tiny_c5_ultra_free_box.o core/box/tiny_c4_ultra_free_box.o core/box/tiny_page_box.o core/box/tiny_class_policy_box.o core/box/tiny_class_stats_box.o core/box/tiny_policy_learner_box.o core/box/ss_budget_box.o core/box/tiny_mem_stats_box.o core/box/c7_meta_used_counter_box.o core/box/wrapper_env_box.o core/box/madvise_guard_box.o core/box/libm_reloc_guard_box.o core/box/ptr_trace_box.o core/box/link_missing_stubs.o core/box/super_reg_box.o core/box/shared_pool_box.o core/box/remote_side_box.o core/page_arena.o core/front/tiny_unified_cache.o core/tiny_alloc_fast_push.o core/tiny_c7_ultra_segment.o core/tiny_c7_ultra.o core/link_stubs.o core/tiny_failfast.o core/tiny_destructors.o core/smallobject_hotbox_v3.o core/smallobject_hotbox_v4.o core/smallobject_hotbox_v5.o core/smallsegment_v5.o core/smallobject_cold_iface_v5.o core/smallsegment_v6.o core/smallobject_cold_iface_v6.o core/smallobject_core_v6.o core/region_id_v6.o
OBJS = $(OBJS_BASE) OBJS = $(OBJS_BASE)
# Shared library # Shared library
@ -250,7 +250,7 @@ endif
# Benchmark targets # Benchmark targets
BENCH_HAKMEM = bench_allocators_hakmem BENCH_HAKMEM = bench_allocators_hakmem
BENCH_SYSTEM = bench_allocators_system BENCH_SYSTEM = bench_allocators_system
BENCH_HAKMEM_OBJS_BASE = hakmem.o hakmem_config.o hakmem_tiny_config.o hakmem_ucb1.o hakmem_bigcache.o hakmem_pool.o hakmem_l25_pool.o hakmem_site_rules.o hakmem_tiny.o core/box/ss_allocation_box.o superslab_stats.o superslab_cache.o superslab_ace.o superslab_slab.o superslab_backend.o core/superslab_head_stub.o hakmem_smallmid.o tiny_sticky.o tiny_remote.o tiny_publish.o tiny_debug_ring.o hakmem_tiny_magazine.o hakmem_tiny_stats.o hakmem_tiny_sfc.o hakmem_tiny_query.o hakmem_tiny_rss.o hakmem_tiny_registry.o hakmem_tiny_remote_target.o hakmem_tiny_bg_spill.o tiny_adaptive_sizing.o hakmem_super_registry.o hakmem_shared_pool.o hakmem_shared_pool_acquire.o hakmem_shared_pool_release.o hakmem_elo.o hakmem_batch.o hakmem_p2.o hakmem_sizeclass_dist.o hakmem_evo.o hakmem_debug.o hakmem_sys.o hakmem_whale.o hakmem_policy.o hakmem_ace.o hakmem_ace_stats.o hakmem_prof.o hakmem_learner.o hakmem_size_hist.o hakmem_learn_log.o hakmem_syscall.o hakmem_ace_metrics.o hakmem_ace_ucb1.o hakmem_ace_controller.o tiny_fastcache.o core/box/superslab_expansion_box.o core/box/integrity_box.o core/box/free_publish_box.o core/box/mailbox_box.o core/box/front_gate_box.o core/box/front_gate_classifier.o core/box/capacity_box.o core/box/carve_push_box.o core/box/prewarm_box.o core/box/ss_hot_prewarm_box.o core/box/front_metrics_box.o core/box/bench_fast_box.o core/box/ss_addr_map_box.o core/box/slab_recycling_box.o core/box/pagefault_telemetry_box.o core/box/tiny_sizeclass_hist_box.o core/box/tiny_env_box.o core/box/tiny_route_box.o core/box/free_front_v3_env_box.o core/box/free_path_stats_box.o core/box/free_dispatch_stats_box.o core/box/alloc_gate_stats_box.o core/box/tiny_c6_ultra_free_box.o core/box/tiny_c5_ultra_free_box.o core/box/tiny_c4_ultra_free_box.o core/box/tiny_page_box.o core/box/tiny_class_policy_box.o core/box/tiny_class_stats_box.o core/box/tiny_policy_learner_box.o core/box/ss_budget_box.o core/box/tiny_mem_stats_box.o core/box/c7_meta_used_counter_box.o core/box/wrapper_env_box.o core/box/madvise_guard_box.o core/box/libm_reloc_guard_box.o core/box/ptr_trace_box.o core/box/link_missing_stubs.o core/box/super_reg_box.o core/box/shared_pool_box.o core/box/remote_side_box.o core/page_arena.o core/front/tiny_unified_cache.o core/tiny_alloc_fast_push.o core/tiny_c7_ultra_segment.o core/tiny_c7_ultra.o core/link_stubs.o core/tiny_failfast.o core/tiny_destructors.o core/smallobject_hotbox_v3.o core/smallobject_hotbox_v4.o core/smallobject_hotbox_v5.o core/smallsegment_v5.o core/smallobject_cold_iface_v5.o core/smallsegment_v6.o core/smallobject_cold_iface_v6.o core/smallobject_core_v6.o bench_allocators_hakmem.o BENCH_HAKMEM_OBJS_BASE = hakmem.o hakmem_config.o hakmem_tiny_config.o hakmem_ucb1.o hakmem_bigcache.o hakmem_pool.o hakmem_l25_pool.o hakmem_site_rules.o hakmem_tiny.o core/box/ss_allocation_box.o superslab_stats.o superslab_cache.o superslab_ace.o superslab_slab.o superslab_backend.o core/superslab_head_stub.o hakmem_smallmid.o tiny_sticky.o tiny_remote.o tiny_publish.o tiny_debug_ring.o hakmem_tiny_magazine.o hakmem_tiny_stats.o hakmem_tiny_sfc.o hakmem_tiny_query.o hakmem_tiny_rss.o hakmem_tiny_registry.o hakmem_tiny_remote_target.o hakmem_tiny_bg_spill.o tiny_adaptive_sizing.o hakmem_super_registry.o hakmem_shared_pool.o hakmem_shared_pool_acquire.o hakmem_shared_pool_release.o hakmem_elo.o hakmem_batch.o hakmem_p2.o hakmem_sizeclass_dist.o hakmem_evo.o hakmem_debug.o hakmem_sys.o hakmem_whale.o hakmem_policy.o hakmem_ace.o hakmem_ace_stats.o hakmem_prof.o hakmem_learner.o hakmem_size_hist.o hakmem_learn_log.o hakmem_syscall.o hakmem_ace_metrics.o hakmem_ace_ucb1.o hakmem_ace_controller.o tiny_fastcache.o core/box/superslab_expansion_box.o core/box/integrity_box.o core/box/free_publish_box.o core/box/mailbox_box.o core/box/front_gate_box.o core/box/front_gate_classifier.o core/box/capacity_box.o core/box/carve_push_box.o core/box/prewarm_box.o core/box/ss_hot_prewarm_box.o core/box/front_metrics_box.o core/box/bench_fast_box.o core/box/ss_addr_map_box.o core/box/slab_recycling_box.o core/box/pagefault_telemetry_box.o core/box/tiny_sizeclass_hist_box.o core/box/tiny_env_box.o core/box/tiny_route_box.o core/box/free_front_v3_env_box.o core/box/free_path_stats_box.o core/box/free_dispatch_stats_box.o core/box/alloc_gate_stats_box.o core/box/tiny_c6_ultra_free_box.o core/box/tiny_c5_ultra_free_box.o core/box/tiny_c4_ultra_free_box.o core/box/tiny_page_box.o core/box/tiny_class_policy_box.o core/box/tiny_class_stats_box.o core/box/tiny_policy_learner_box.o core/box/ss_budget_box.o core/box/tiny_mem_stats_box.o core/box/c7_meta_used_counter_box.o core/box/wrapper_env_box.o core/box/madvise_guard_box.o core/box/libm_reloc_guard_box.o core/box/ptr_trace_box.o core/box/link_missing_stubs.o core/box/super_reg_box.o core/box/shared_pool_box.o core/box/remote_side_box.o core/page_arena.o core/front/tiny_unified_cache.o core/tiny_alloc_fast_push.o core/tiny_c7_ultra_segment.o core/tiny_c7_ultra.o core/link_stubs.o core/tiny_failfast.o core/tiny_destructors.o core/smallobject_hotbox_v3.o core/smallobject_hotbox_v4.o core/smallobject_hotbox_v5.o core/smallsegment_v5.o core/smallobject_cold_iface_v5.o core/smallsegment_v6.o core/smallobject_cold_iface_v6.o core/smallobject_core_v6.o core/region_id_v6.o bench_allocators_hakmem.o
BENCH_HAKMEM_OBJS = $(BENCH_HAKMEM_OBJS_BASE) BENCH_HAKMEM_OBJS = $(BENCH_HAKMEM_OBJS_BASE)
ifeq ($(POOL_TLS_PHASE1),1) ifeq ($(POOL_TLS_PHASE1),1)
BENCH_HAKMEM_OBJS += pool_tls.o pool_refill.o pool_tls_arena.o pool_tls_registry.o pool_tls_remote.o BENCH_HAKMEM_OBJS += pool_tls.o pool_refill.o pool_tls_arena.o pool_tls_registry.o pool_tls_remote.o
@ -427,7 +427,7 @@ test-box-refactor: box-refactor
./larson_hakmem 10 8 128 1024 1 12345 4 ./larson_hakmem 10 8 128 1024 1 12345 4
# Phase 4: Tiny Pool benchmarks (properly linked with hakmem) # Phase 4: Tiny Pool benchmarks (properly linked with hakmem)
TINY_BENCH_OBJS_BASE = hakmem.o hakmem_config.o hakmem_tiny_config.o hakmem_ucb1.o hakmem_bigcache.o hakmem_pool.o hakmem_l25_pool.o hakmem_site_rules.o hakmem_tiny.o core/box/ss_allocation_box.o superslab_stats.o superslab_cache.o superslab_ace.o superslab_slab.o superslab_backend.o core/superslab_head_stub.o hakmem_smallmid.o core/box/superslab_expansion_box.o core/box/integrity_box.o core/box/mailbox_box.o core/box/front_gate_box.o core/box/front_gate_classifier.o core/box/free_publish_box.o core/box/capacity_box.o core/box/carve_push_box.o core/box/prewarm_box.o core/box/ss_hot_prewarm_box.o core/box/front_metrics_box.o core/box/bench_fast_box.o core/box/ss_addr_map_box.o core/box/slab_recycling_box.o core/box/pagefault_telemetry_box.o core/box/tiny_sizeclass_hist_box.o core/box/tiny_env_box.o core/box/tiny_route_box.o core/box/free_front_v3_env_box.o core/box/free_path_stats_box.o core/box/free_dispatch_stats_box.o core/box/alloc_gate_stats_box.o core/box/tiny_c6_ultra_free_box.o core/box/tiny_c5_ultra_free_box.o core/box/tiny_c4_ultra_free_box.o core/box/tiny_page_box.o core/box/tiny_class_policy_box.o core/box/tiny_class_stats_box.o core/box/tiny_policy_learner_box.o core/box/ss_budget_box.o core/box/tiny_mem_stats_box.o core/box/c7_meta_used_counter_box.o core/box/wrapper_env_box.o core/box/madvise_guard_box.o core/box/libm_reloc_guard_box.o core/box/ptr_trace_box.o core/box/link_missing_stubs.o core/box/super_reg_box.o core/box/shared_pool_box.o core/box/remote_side_box.o core/page_arena.o core/front/tiny_unified_cache.o tiny_sticky.o tiny_remote.o tiny_publish.o tiny_debug_ring.o hakmem_tiny_magazine.o hakmem_tiny_stats.o hakmem_tiny_sfc.o hakmem_tiny_query.o hakmem_tiny_rss.o hakmem_tiny_registry.o hakmem_tiny_remote_target.o hakmem_tiny_bg_spill.o tiny_adaptive_sizing.o hakmem_super_registry.o hakmem_shared_pool.o hakmem_shared_pool_acquire.o hakmem_shared_pool_release.o hakmem_elo.o hakmem_batch.o hakmem_p2.o hakmem_sizeclass_dist.o hakmem_evo.o hakmem_debug.o hakmem_sys.o hakmem_whale.o hakmem_policy.o hakmem_ace.o hakmem_ace_stats.o hakmem_prof.o hakmem_learner.o hakmem_size_hist.o hakmem_learn_log.o hakmem_syscall.o hakmem_ace_metrics.o hakmem_ace_ucb1.o hakmem_ace_controller.o tiny_fastcache.o core/tiny_alloc_fast_push.o core/tiny_c7_ultra_segment.o core/tiny_c7_ultra.o core/link_stubs.o core/tiny_failfast.o core/tiny_destructors.o core/smallobject_hotbox_v3.o core/smallobject_hotbox_v4.o core/smallobject_hotbox_v5.o core/smallsegment_v5.o core/smallobject_cold_iface_v5.o core/smallsegment_v6.o core/smallobject_cold_iface_v6.o core/smallobject_core_v6.o TINY_BENCH_OBJS_BASE = hakmem.o hakmem_config.o hakmem_tiny_config.o hakmem_ucb1.o hakmem_bigcache.o hakmem_pool.o hakmem_l25_pool.o hakmem_site_rules.o hakmem_tiny.o core/box/ss_allocation_box.o superslab_stats.o superslab_cache.o superslab_ace.o superslab_slab.o superslab_backend.o core/superslab_head_stub.o hakmem_smallmid.o core/box/superslab_expansion_box.o core/box/integrity_box.o core/box/mailbox_box.o core/box/front_gate_box.o core/box/front_gate_classifier.o core/box/free_publish_box.o core/box/capacity_box.o core/box/carve_push_box.o core/box/prewarm_box.o core/box/ss_hot_prewarm_box.o core/box/front_metrics_box.o core/box/bench_fast_box.o core/box/ss_addr_map_box.o core/box/slab_recycling_box.o core/box/pagefault_telemetry_box.o core/box/tiny_sizeclass_hist_box.o core/box/tiny_env_box.o core/box/tiny_route_box.o core/box/free_front_v3_env_box.o core/box/free_path_stats_box.o core/box/free_dispatch_stats_box.o core/box/alloc_gate_stats_box.o core/box/tiny_c6_ultra_free_box.o core/box/tiny_c5_ultra_free_box.o core/box/tiny_c4_ultra_free_box.o core/box/tiny_page_box.o core/box/tiny_class_policy_box.o core/box/tiny_class_stats_box.o core/box/tiny_policy_learner_box.o core/box/ss_budget_box.o core/box/tiny_mem_stats_box.o core/box/c7_meta_used_counter_box.o core/box/wrapper_env_box.o core/box/madvise_guard_box.o core/box/libm_reloc_guard_box.o core/box/ptr_trace_box.o core/box/link_missing_stubs.o core/box/super_reg_box.o core/box/shared_pool_box.o core/box/remote_side_box.o core/page_arena.o core/front/tiny_unified_cache.o tiny_sticky.o tiny_remote.o tiny_publish.o tiny_debug_ring.o hakmem_tiny_magazine.o hakmem_tiny_stats.o hakmem_tiny_sfc.o hakmem_tiny_query.o hakmem_tiny_rss.o hakmem_tiny_registry.o hakmem_tiny_remote_target.o hakmem_tiny_bg_spill.o tiny_adaptive_sizing.o hakmem_super_registry.o hakmem_shared_pool.o hakmem_shared_pool_acquire.o hakmem_shared_pool_release.o hakmem_elo.o hakmem_batch.o hakmem_p2.o hakmem_sizeclass_dist.o hakmem_evo.o hakmem_debug.o hakmem_sys.o hakmem_whale.o hakmem_policy.o hakmem_ace.o hakmem_ace_stats.o hakmem_prof.o hakmem_learner.o hakmem_size_hist.o hakmem_learn_log.o hakmem_syscall.o hakmem_ace_metrics.o hakmem_ace_ucb1.o hakmem_ace_controller.o tiny_fastcache.o core/tiny_alloc_fast_push.o core/tiny_c7_ultra_segment.o core/tiny_c7_ultra.o core/link_stubs.o core/tiny_failfast.o core/tiny_destructors.o core/smallobject_hotbox_v3.o core/smallobject_hotbox_v4.o core/smallobject_hotbox_v5.o core/smallsegment_v5.o core/smallobject_cold_iface_v5.o core/smallsegment_v6.o core/smallobject_cold_iface_v6.o core/smallobject_core_v6.o core/region_id_v6.o
TINY_BENCH_OBJS = $(TINY_BENCH_OBJS_BASE) TINY_BENCH_OBJS = $(TINY_BENCH_OBJS_BASE)
ifeq ($(POOL_TLS_PHASE1),1) ifeq ($(POOL_TLS_PHASE1),1)
TINY_BENCH_OBJS += pool_tls.o pool_refill.o core/pool_tls_arena.o pool_tls_registry.o pool_tls_remote.o TINY_BENCH_OBJS += pool_tls.o pool_refill.o core/pool_tls_arena.o pool_tls_registry.o pool_tls_remote.o

10
core/box/region_id_v6_box.h
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@ -10,6 +10,7 @@
#include <stdint.h> #include <stdint.h>
#include <stdbool.h> #include <stdbool.h>
#include <stddef.h> #include <stddef.h>
#include "smallsegment_v6_box.h" // For SmallSegmentV6 type
// ============================================================================ // ============================================================================
// Region Kind Enum // Region Kind Enum
@ -130,6 +131,15 @@ typedef struct RegionIdTlsCache {
/// Get TLS cache for current thread /// Get TLS cache for current thread
RegionIdTlsCache* region_id_tls_cache_get(void); RegionIdTlsCache* region_id_tls_cache_get(void);
// ============================================================================
// Phase V6-HDR-3: Segment Registration (TLS scope)
// ============================================================================
/// Register this thread's v6 segment (Phase V6-HDR-3)
/// Called from small_heap_ctx_v6() when segment is first acquired
/// @param seg: SmallSegmentV6 pointer (TLS-owned)
void region_id_register_v6_segment(SmallSegmentV6* seg);
/// Inline fast lookup with TLS cache hit /// Inline fast lookup with TLS cache hit
static inline RegionLookupV6 region_id_lookup_fast_v6(void* ptr) { static inline RegionLookupV6 region_id_lookup_fast_v6(void* ptr) {
RegionIdTlsCache* cache = region_id_tls_cache_get(); RegionIdTlsCache* cache = region_id_tls_cache_get();

18
core/box/smallobject_core_v6_box.h
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@ -324,4 +324,22 @@ void* small_v6_alloc(SmallHeapCtxV6* ctx, uint8_t lane_idx);
/// @param lane_idx: lane index (0=C4, 1=C5, 2=C6) /// @param lane_idx: lane index (0=C4, 1=C5, 2=C6)
void small_v6_free(SmallHeapCtxV6* ctx, void* ptr, uint8_t lane_idx); void small_v6_free(SmallHeapCtxV6* ctx, void* ptr, uint8_t lane_idx);
// ============================================================================
// Phase V6-HDR-2: Headerless Free/Alloc API
// ============================================================================
/// Headerless free: uses RegionIdBox for ptr classification
/// @param ctx: TLS context
/// @param ptr: USER pointer to free
/// @param class_idx_hint: class_idx from front (header byte)
/// @return: true if handled by v6, false if fallback needed
bool small_v6_headerless_free(SmallHeapCtxV6* ctx, void* ptr, uint8_t class_idx_hint);
/// Headerless alloc: TLS pop without header write
/// Header is already written during carve/refill
/// @param ctx: TLS context
/// @param class_idx: class index (4=C4, 5=C5, 6=C6)
/// @return: USER pointer or NULL (fallback needed)
void* small_v6_headerless_alloc(SmallHeapCtxV6* ctx, uint8_t class_idx);
#endif // HAKMEM_SMALLOBJECT_CORE_V6_BOX_H #endif // HAKMEM_SMALLOBJECT_CORE_V6_BOX_H

91
core/box/smallobject_v6_env_box.h Normal file
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@ -0,0 +1,91 @@
// smallobject_v6_env_box.h - SmallObject v6 ENV Control Box (Headerless Mode)
//
// Phase V6-HDR-2: Additional ENV control for headerless mode
// - Uses tiny_route_env_box.h for v6_enabled and class_enabled
// - Adds headerless-specific ENV gates
#ifndef HAKMEM_SMALLOBJECT_V6_ENV_BOX_H
#define HAKMEM_SMALLOBJECT_V6_ENV_BOX_H
#include <stdbool.h>
#include <stdlib.h>
#include <stdio.h>
#include "tiny_route_env_box.h" // For small_heap_v6_enabled, small_heap_v6_class_enabled
#ifndef likely
#define likely(x) __builtin_expect(!!(x), 1)
#define unlikely(x) __builtin_expect(!!(x), 0)
#endif
// ============================================================================
// ENV: HAKMEM_SMALL_HEAP_V6_HEADERLESS
// ============================================================================
// Enable headerless mode for v6. Default OFF.
// When ON:
// - free: use RegionIdBox lookup instead of header
// - alloc: skip header write (rely on carve-time header)
#define V6_HEADERLESS_UNINIT (-1)
#define V6_HEADERLESS_OFF 0
#define V6_HEADERLESS_ON 1
static int g_small_heap_v6_headerless = V6_HEADERLESS_UNINIT;
static inline bool small_heap_v6_headerless_enabled(void) {
if (unlikely(g_small_heap_v6_headerless == V6_HEADERLESS_UNINIT)) {
const char* env = getenv("HAKMEM_SMALL_HEAP_V6_HEADERLESS");
g_small_heap_v6_headerless = (env && env[0] == '1') ? V6_HEADERLESS_ON : V6_HEADERLESS_OFF;
}
return g_small_heap_v6_headerless == V6_HEADERLESS_ON;
}
// ============================================================================
// ENV: HAKMEM_SMALL_V6_REGION_OBSERVE (moved from smallobject_core_v6.c)
// ============================================================================
// Enable OBSERVE mode for class_idx validation. Default OFF.
#define V6_REGION_OBS_UNINIT (-1)
#define V6_REGION_OBS_OFF 0
#define V6_REGION_OBS_ON 1
static int g_small_v6_region_observe_env = V6_REGION_OBS_UNINIT;
static inline bool small_v6_region_observe_enabled(void) {
if (unlikely(g_small_v6_region_observe_env == V6_REGION_OBS_UNINIT)) {
const char* env = getenv("HAKMEM_SMALL_V6_REGION_OBSERVE");
g_small_v6_region_observe_env = (env && env[0] == '1') ? V6_REGION_OBS_ON : V6_REGION_OBS_OFF;
}
return g_small_v6_region_observe_env == V6_REGION_OBS_ON;
}
// ============================================================================
// Combined Gate: v6 headerless route enabled for class
// ============================================================================
/// Check if v6 headerless route is enabled for a given class
/// Uses small_heap_v6_enabled() and small_heap_v6_class_enabled() from tiny_route_env_box.h
/// @param class_idx: class index (4=C4, 5=C5, 6=C6)
/// @return: true if v6 headerless free/alloc should be used
static inline bool small_v6_headerless_route_enabled(uint8_t class_idx) {
return small_heap_v6_enabled() &&
small_heap_v6_headerless_enabled() &&
small_heap_v6_class_enabled((uint32_t)class_idx);
}
// ============================================================================
// Debug: Dump ENV state
// ============================================================================
static inline void small_v6_env_dump(void) {
// Force init
(void)small_heap_v6_enabled();
(void)small_heap_v6_headerless_enabled();
(void)small_v6_region_observe_enabled();
fprintf(stderr, "[V6_ENV] enabled=%d headerless=%d observe=%d\n",
small_heap_v6_enabled() ? 1 : 0,
g_small_heap_v6_headerless == V6_HEADERLESS_ON,
g_small_v6_region_observe_env == V6_REGION_OBS_ON);
}
#endif // HAKMEM_SMALLOBJECT_V6_ENV_BOX_H

29
core/front/malloc_tiny_fast.h
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@ -43,8 +43,8 @@
#include "../box/smallobject_hotbox_v3_box.h" // SmallObject HotHeap v3 skeleton #include "../box/smallobject_hotbox_v3_box.h" // SmallObject HotHeap v3 skeleton
#include "../box/smallobject_hotbox_v4_box.h" // SmallObject HotHeap v4 (C7 stub) #include "../box/smallobject_hotbox_v4_box.h" // SmallObject HotHeap v4 (C7 stub)
#include "../box/smallobject_hotbox_v5_box.h" // SmallObject HotHeap v5 (C6-only route stub, Phase v5-1) #include "../box/smallobject_hotbox_v5_box.h" // SmallObject HotHeap v5 (C6-only route stub, Phase v5-1)
// Phase FREE-LEGACY-BREAKDOWN-1: v6 は型エラーがあるため一時的にコメントアウト（デフォルト OFF なので影響なし） #include "../box/smallobject_core_v6_box.h" // SmallObject Core v6 (Phase V6-HDR-2)
// #include "../box/smallobject_core_v6_box.h" // SmallObject Core v6 (C6-only route stub, Phase v6-1) #include "../box/smallobject_v6_env_box.h" // SmallObject v6 ENV control (Phase V6-HDR-2)
#include "../box/tiny_c7_ultra_box.h" // C7 ULTRA stub (UF-1, delegates to v3) #include "../box/tiny_c7_ultra_box.h" // C7 ULTRA stub (UF-1, delegates to v3)
#include "../box/tiny_c6_ultra_free_box.h" // Phase 4-2: C6 ULTRA-free (free-only, C6-only) #include "../box/tiny_c6_ultra_free_box.h" // Phase 4-2: C6 ULTRA-free (free-only, C6-only)
#include "../box/tiny_c5_ultra_free_box.h" // Phase 5-1/5-2: C5 ULTRA-free + alloc integration #include "../box/tiny_c5_ultra_free_box.h" // Phase 5-1/5-2: C5 ULTRA-free + alloc integration
@ -224,9 +224,15 @@ static inline void* malloc_tiny_fast(size_t size) {
switch (route) { switch (route) {
case TINY_ROUTE_SMALL_HEAP_V6: { case TINY_ROUTE_SMALL_HEAP_V6: {
// Phase FREE-LEGACY-BREAKDOWN-1: v6 は既存のビルドエラーがあるため一時的にスキップ // Phase V6-HDR-2: Headerless alloc (ENV gated)
// (v6 はデフォルト OFF なので測定には影響なし) if (small_v6_headerless_route_enabled((uint8_t)class_idx)) {
// fallthrough to v5/v2/v1 SmallHeapCtxV6* ctx_v6 = small_heap_ctx_v6();
void* v6p = small_v6_headerless_alloc(ctx_v6, (uint8_t)class_idx);
if (TINY_HOT_LIKELY(v6p != NULL)) {
return v6p; // No header write needed - done in refill
}
// v6 returned NULL -> fallback to legacy
}
__attribute__((fallthrough)); __attribute__((fallthrough));
} }
case TINY_ROUTE_SMALL_HEAP_V3: { case TINY_ROUTE_SMALL_HEAP_V3: {
@ -459,10 +465,15 @@ static inline int free_tiny_fast(void* ptr) {
if (__builtin_expect(use_tiny_heap, 0)) { if (__builtin_expect(use_tiny_heap, 0)) {
switch (route) { switch (route) {
case TINY_ROUTE_SMALL_HEAP_V6: { case TINY_ROUTE_SMALL_HEAP_V6: {
// Phase FREE-LEGACY-BREAKDOWN-1: v6 は既存のビルドエラーがあるため、今回は skip // Phase V6-HDR-2: Headerless free (ENV gated)
// (v6 はデフォルト OFF なので測定には影響なし) if (small_v6_headerless_route_enabled((uint8_t)class_idx)) {
// fallthrough to v5/v2/v1 SmallHeapCtxV6* ctx_v6 = small_heap_ctx_v6();
break; if (small_v6_headerless_free(ctx_v6, ptr, (uint8_t)class_idx)) {
return 1; // Handled by v6
}
// v6 returned false -> fallback to legacy
}
break; // fallthrough to legacy
} }
case TINY_ROUTE_SMALL_HEAP_V5: { case TINY_ROUTE_SMALL_HEAP_V5: {
// Phase v5-2: C6-only full implementation // Phase v5-2: C6-only full implementation

231
core/region_id_v6.c Normal file
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@ -0,0 +1,231 @@
// region_id_v6.c - RegionIdBox implementation for V6-HDR-1
//
// Purpose: Centralized ptr -> region lookup for headerless design
// Phase V6-HDR-1: OBSERVE only (no behavior change)
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include "box/region_id_v6_box.h"
#include "box/smallsegment_v6_box.h"
#ifndef likely
#define likely(x) __builtin_expect(!!(x), 1)
#define unlikely(x) __builtin_expect(!!(x), 0)
#endif
// ============================================================================
// ENV Control
// ============================================================================
#define REGION_OBSERVE_UNINIT (-1)
#define REGION_OBSERVE_OFF 0
#define REGION_OBSERVE_ON 1
static int g_region_observe = REGION_OBSERVE_UNINIT;
bool region_id_observe_enabled(void) {
if (unlikely(g_region_observe == REGION_OBSERVE_UNINIT)) {
const char* env = getenv("HAKMEM_REGION_ID_V6_OBSERVE");
g_region_observe = (env && env[0] == '1') ? REGION_OBSERVE_ON : REGION_OBSERVE_OFF;
}
return g_region_observe == REGION_OBSERVE_ON;
}
// ============================================================================
// TLS Cache + Segment Registration (Phase V6-HDR-3)
// ============================================================================
static __thread RegionIdTlsCache g_region_tls_cache;
static __thread int g_region_tls_cache_init = 0;
// TLS segment info (registered on first access)
static __thread uintptr_t g_v6_segment_base = 0;
static __thread uintptr_t g_v6_segment_end = 0;
static __thread SmallSegmentV6* g_v6_segment = NULL;
static __thread int g_v6_segment_registered = 0;
RegionIdTlsCache* region_id_tls_cache_get(void) {
if (unlikely(!g_region_tls_cache_init)) {
memset(&g_region_tls_cache, 0, sizeof(g_region_tls_cache));
g_region_tls_cache_init = 1;
}
return &g_region_tls_cache;
}
/// Register this thread's v6 segment (Phase V6-HDR-3)
/// Called from small_heap_ctx_v6() when segment is first acquired
void region_id_register_v6_segment(SmallSegmentV6* seg) {
if (!seg || g_v6_segment_registered) {
return; // Already registered or invalid
}
g_v6_segment_base = seg->base;
g_v6_segment_end = seg->base + SMALL_SEGMENT_V6_SIZE;
g_v6_segment = seg;
g_v6_segment_registered = 1;
}
// ============================================================================
// Global RegionIdBox (stub for now)
// ============================================================================
// Define the opaque RegionIdBox structure
struct RegionIdBox {
uint32_t next_id;
// Stub implementation - full implementation in V6-HDR-2
};
static struct RegionIdBox g_region_id_box;
RegionIdBox* region_id_box_get(void) {
return &g_region_id_box;
}
// ============================================================================
// Lookup Implementation (V6-HDR-1: TLS segment only)
// ============================================================================
// Forward declaration from smallsegment_v6.c
extern SmallPageMetaV6* small_page_meta_v6_of(void* ptr);
RegionLookupV6 region_id_lookup_v6(void* ptr) {
RegionLookupV6 result = {
.kind = REGION_KIND_UNKNOWN,
.region_id = 0,
.page_meta = NULL
};
if (unlikely(!ptr)) {
return result;
}
uintptr_t addr = (uintptr_t)ptr;
// Phase V6-HDR-3: Check TLS segment registration first (fast path)
if (g_v6_segment_registered && addr >= g_v6_segment_base && addr < g_v6_segment_end) {
// ptr is in this thread's v6 segment - get page_meta
SmallPageMetaV6* page = small_page_meta_v6_of(ptr);
if (page != NULL) {
result.kind = REGION_KIND_SMALL_V6;
result.region_id = 1; // Single TLS segment per thread
result.page_meta = page;
// Update TLS cache
RegionIdTlsCache* cache = region_id_tls_cache_get();
cache->last_base = g_v6_segment_base;
cache->last_end = g_v6_segment_end;
cache->last_result = result;
}
return result;
}
// Legacy fallback (if TLS not registered yet)
SmallPageMetaV6* page = small_page_meta_v6_of(ptr);
if (page != NULL) {
result.kind = REGION_KIND_SMALL_V6;
result.region_id = 1;
result.page_meta = page;
RegionIdTlsCache* cache = region_id_tls_cache_get();
SmallSegmentV6* seg = (SmallSegmentV6*)page->segment;
if (seg) {
cache->last_base = seg->base;
cache->last_end = seg->base + SMALL_SEGMENT_V6_SIZE;
cache->last_result = result;
}
}
return result;
}
RegionLookupV6 region_id_lookup_cached_v6(void* ptr) {
RegionIdTlsCache* cache = region_id_tls_cache_get();
uintptr_t addr = (uintptr_t)ptr;
// TLS cache hit?
if (addr >= cache->last_base && addr < cache->last_end &&
cache->last_result.kind != REGION_KIND_UNKNOWN) {
// Cache hit - but still need to get the correct page_meta
// for this specific ptr (page_idx may differ)
SmallPageMetaV6* page = small_page_meta_v6_of(ptr);
if (page) {
RegionLookupV6 result = cache->last_result;
result.page_meta = page;
return result;
}
}
// Cache miss -> slow path
return region_id_lookup_v6(ptr);
}
// ============================================================================
// Registration API (Stub for V6-HDR-1)
// ============================================================================
uint32_t region_id_register_v6(void* base, size_t size, region_kind_t kind, void* metadata) {
(void)base;
(void)size;
(void)kind;
(void)metadata;
// V6-HDR-1: Registration is not yet implemented
// TLS segment is implicitly "registered" by its existence
return 1; // Single region for now
}
void region_id_unregister_v6(uint32_t region_id) {
(void)region_id;
// V6-HDR-1: No-op
}
bool region_id_is_valid_v6(uint32_t region_id) {
return region_id == 1; // Only TLS segment is "registered"
}
// ============================================================================
// Utility API
// ============================================================================
const char* region_kind_to_string(region_kind_t kind) {
switch (kind) {
case REGION_KIND_UNKNOWN: return "UNKNOWN";
case REGION_KIND_SMALL_V6: return "SMALL_V6";
case REGION_KIND_C7_ULTRA: return "C7_ULTRA";
case REGION_KIND_POOL_V1: return "POOL_V1";
case REGION_KIND_LARGE: return "LARGE";
case REGION_KIND_TINY_LEGACY: return "TINY_LEGACY";
default: return "INVALID";
}
}
void region_id_box_dump(void) {
fprintf(stderr, "[REGION_ID_BOX] V6-HDR-1: TLS segment lookup only\n");
fprintf(stderr, "[REGION_ID_BOX] observe=%d\n", region_id_observe_enabled());
}
// ============================================================================
// OBSERVE Mode Logging
// ============================================================================
void region_id_observe_lookup(void* ptr, const RegionLookupV6* result) {
if (region_id_observe_enabled()) {
fprintf(stderr, "[REGION_ID] lookup ptr=%p kind=%s region_id=%u page_meta=%p\n",
ptr, region_kind_to_string(result->kind),
result->region_id, result->page_meta);
}
}
void region_id_observe_register(void* base, size_t size, region_kind_t kind, uint32_t id) {
if (region_id_observe_enabled()) {
fprintf(stderr, "[REGION_ID] register base=%p size=%zu kind=%s id=%u\n",
base, size, region_kind_to_string(kind), id);
}
}
void region_id_observe_unregister(uint32_t id) {
if (region_id_observe_enabled()) {
fprintf(stderr, "[REGION_ID] unregister id=%u\n", id);
}
}

218
core/smallobject_core_v6.c
View File

@ -9,6 +9,8 @@
#include "box/smallobject_cold_iface_v6.h" #include "box/smallobject_cold_iface_v6.h"
#include "box/smallsegment_v6_box.h" #include "box/smallsegment_v6_box.h"
#include "box/tiny_route_env_box.h" #include "box/tiny_route_env_box.h"
#include "box/region_id_v6_box.h"
#include "box/smallobject_v6_env_box.h"
#ifndef likely #ifndef likely
#define likely(x) __builtin_expect(!!(x), 1) #define likely(x) __builtin_expect(!!(x), 1)
@ -40,6 +42,36 @@ static void small_v6_observe_free(void* ptr, uint32_t class_idx, int tls_owned)
ptr, class_idx, tls_owned); ptr, class_idx, tls_owned);
} }
// ============================================================================
// REGION_OBSERVE Validation (V6-HDR-1)
// ============================================================================
// Note: small_v6_region_observe_enabled() is now in smallobject_v6_env_box.h
/// Validate class_idx via RegionIdBox lookup (called when REGION_OBSERVE=1)
/// @param ptr: USER pointer
/// @param class_idx_hint: class_idx from front caller
static void small_v6_region_observe_validate(void* ptr, uint32_t class_idx_hint) {
RegionLookupV6 lk = region_id_lookup_v6(ptr);
// Log the lookup to REGION_ID_BOX observe (if enabled)
region_id_observe_lookup(ptr, &lk);
if (lk.kind == REGION_KIND_SMALL_V6 && lk.page_meta != NULL) {
SmallPageMetaV6* page = (SmallPageMetaV6*)lk.page_meta;
if (page->class_idx != class_idx_hint) {
fprintf(stderr, "[V6_REGION_OBSERVE] MISMATCH ptr=%p "
"hint=%u actual=%u page_meta=%p\n",
ptr, class_idx_hint, page->class_idx, (void*)page);
}
} else if (lk.kind != REGION_KIND_UNKNOWN) {
// ptr is in a different kind of region (not v6)
fprintf(stderr, "[V6_REGION_OBSERVE] KIND_MISMATCH ptr=%p "
"kind=%s (expected SMALL_V6)\n",
ptr, region_kind_to_string(lk.kind));
}
// REGION_KIND_UNKNOWN: ptr not in any v6 segment (OK for now)
}
// TLS context // TLS context
static __thread struct SmallHeapCtxV6 g_small_heap_ctx_v6; static __thread struct SmallHeapCtxV6 g_small_heap_ctx_v6;
static __thread int g_small_heap_ctx_v6_init = 0; static __thread int g_small_heap_ctx_v6_init = 0;
@ -59,6 +91,9 @@ SmallHeapCtxV6* small_heap_ctx_v6(void) {
if (seg && small_segment_v6_valid(seg)) { if (seg && small_segment_v6_valid(seg)) {
g_small_heap_ctx_v6.tls_seg_base = seg->base; g_small_heap_ctx_v6.tls_seg_base = seg->base;
g_small_heap_ctx_v6.tls_seg_end = seg->base + SMALL_SEGMENT_V6_SIZE; g_small_heap_ctx_v6.tls_seg_end = seg->base + SMALL_SEGMENT_V6_SIZE;
// Phase V6-HDR-3: Register segment with RegionIdBox (TLS scope)
region_id_register_v6_segment(seg);
} }
g_small_heap_ctx_v6_init = 1; g_small_heap_ctx_v6_init = 1;
@ -284,6 +319,11 @@ void small_free_fast_v6(void* ptr,
small_v6_observe_free(ptr, class_idx, tls_owned); small_v6_observe_free(ptr, class_idx, tls_owned);
} }
// V6-HDR-1: REGION_OBSERVE mode - validate class_idx via RegionIdBox
if (unlikely(small_v6_region_observe_enabled())) {
small_v6_region_observe_validate(ptr, class_idx);
}
// Fast path: TLS segment ownership + TLS push // Fast path: TLS segment ownership + TLS push
if (likely(tls_owned)) { if (likely(tls_owned)) {
// C6 TLS push // C6 TLS push
@ -442,3 +482,181 @@ void small_free_cold_v6(void* ptr, uint32_t class_idx) {
small_cold_v6_retire_page(page); small_cold_v6_retire_page(page);
} }
} }
// ============================================================================
// Phase V6-HDR-2: Headerless Free/Alloc Implementation
// ============================================================================
/// Headerless free: uses RegionIdBox for ptr classification
/// @param ctx: TLS context
/// @param ptr: USER pointer to free
/// @param class_idx_hint: class_idx from front (header byte)
/// @return: true if handled by v6, false if fallback needed
bool small_v6_headerless_free(SmallHeapCtxV6* ctx, void* ptr, uint8_t class_idx_hint) {
// Step 1: RegionIdBox lookup (no header read)
RegionLookupV6 lk = region_id_lookup_v6(ptr);
if (lk.kind != REGION_KIND_SMALL_V6) {
// Not a v6 managed region -> front should fallback
return false;
}
SmallPageMetaV6* page = (SmallPageMetaV6*)lk.page_meta;
if (!page) {
return false;
}
uint8_t class_idx = page->class_idx;
// Step 2: OBSERVE mode - validate class_idx hint
if (unlikely(small_v6_region_observe_enabled())) {
if (class_idx != class_idx_hint) {
fprintf(stderr, "[V6_HDR_FREE] MISMATCH ptr=%p hint=%u actual=%u\n",
ptr, class_idx_hint, class_idx);
}
}
// Step 3: Convert USER -> BASE (no header touch)
void* base = SMALL_V6_BASE_FROM_USER(ptr);
// Step 4: TLS ownership check + TLS push
if (small_tls_owns_ptr_v6(ctx, ptr)) {
// C6 TLS push
if (class_idx == SMALL_V6_C6_CLASS_IDX && ctx->tls_count_c6 < SMALL_V6_TLS_CAP) {
ctx->tls_freelist_c6[ctx->tls_count_c6++] = base;
return true;
}
// C5 TLS push
if (class_idx == SMALL_V6_C5_CLASS_IDX && ctx->tls_count_c5 < SMALL_V6_TLS_CAP) {
ctx->tls_freelist_c5[ctx->tls_count_c5++] = base;
return true;
}
// C4 TLS push
if (class_idx == SMALL_V6_C4_CLASS_IDX && ctx->tls_count_c4 < SMALL_V6_TLS_CAP) {
ctx->tls_freelist_c4[ctx->tls_count_c4++] = base;
return true;
}
}
// Step 5: Cold path - push to page freelist
*(void**)base = page->free_list;
page->free_list = base;
if (page->used > 0) page->used--;
// Retire empty page
if (page->used == 0) {
small_cold_v6_retire_page(page);
}
return true;
}
/// Headerless alloc: TLS pop without header write
/// Header is already written during carve/refill
/// @param ctx: TLS context
/// @param class_idx: class index (4=C4, 5=C5, 6=C6)
/// @return: USER pointer or NULL (fallback needed)
void* small_v6_headerless_alloc(SmallHeapCtxV6* ctx, uint8_t class_idx) {
// TLS fast path (no header write - already done in refill)
if (class_idx == SMALL_V6_C6_CLASS_IDX) {
if (likely(ctx->tls_count_c6 > 0)) {
void* blk = ctx->tls_freelist_c6[--ctx->tls_count_c6];
return SMALL_V6_USER_FROM_BASE(blk);
}
} else if (class_idx == SMALL_V6_C5_CLASS_IDX) {
if (likely(ctx->tls_count_c5 > 0)) {
void* blk = ctx->tls_freelist_c5[--ctx->tls_count_c5];
return SMALL_V6_USER_FROM_BASE(blk);
}
} else if (class_idx == SMALL_V6_C4_CLASS_IDX) {
if (likely(ctx->tls_count_c4 > 0)) {
void* blk = ctx->tls_freelist_c4[--ctx->tls_count_c4];
return SMALL_V6_USER_FROM_BASE(blk);
}
}
// TLS empty -> need refill from cold path
// NOTE: Refill writes header, so alloc doesn't need to
SmallPageMetaV6* page = small_cold_v6_refill_page(class_idx);
if (!page || !page->free_list) {
return NULL; // Front should fallback to legacy
}
uint8_t header_byte = SMALL_V6_HEADER_FROM_CLASS(class_idx);
int max_fill = SMALL_V6_TLS_CAP;
int filled = 0;
// Refill TLS from page
if (class_idx == SMALL_V6_C6_CLASS_IDX) {
max_fill -= ctx->tls_count_c6;
while (page->free_list && filled < max_fill - 1) {
void* blk = page->free_list;
page->free_list = *(void**)blk;
((uint8_t*)blk)[0] = header_byte; // Header write on refill only
ctx->tls_freelist_c6[ctx->tls_count_c6++] = blk;
filled++;
}
page->used += filled;
if (page->free_list) {
void* blk = page->free_list;
page->free_list = *(void**)blk;
page->used++;
((uint8_t*)blk)[0] = header_byte;
return SMALL_V6_USER_FROM_BASE(blk);
}
if (ctx->tls_count_c6 > 0) {
void* blk = ctx->tls_freelist_c6[--ctx->tls_count_c6];
return SMALL_V6_USER_FROM_BASE(blk);
}
} else if (class_idx == SMALL_V6_C5_CLASS_IDX) {
max_fill -= ctx->tls_count_c5;
while (page->free_list && filled < max_fill - 1) {
void* blk = page->free_list;
page->free_list = *(void**)blk;
((uint8_t*)blk)[0] = header_byte;
ctx->tls_freelist_c5[ctx->tls_count_c5++] = blk;
filled++;
}
page->used += filled;
if (page->free_list) {
void* blk = page->free_list;
page->free_list = *(void**)blk;
page->used++;
((uint8_t*)blk)[0] = header_byte;
return SMALL_V6_USER_FROM_BASE(blk);
}
if (ctx->tls_count_c5 > 0) {
void* blk = ctx->tls_freelist_c5[--ctx->tls_count_c5];
return SMALL_V6_USER_FROM_BASE(blk);
}
} else if (class_idx == SMALL_V6_C4_CLASS_IDX) {
max_fill -= ctx->tls_count_c4;
while (page->free_list && filled < max_fill - 1) {
void* blk = page->free_list;
page->free_list = *(void**)blk;
((uint8_t*)blk)[0] = header_byte;
ctx->tls_freelist_c4[ctx->tls_count_c4++] = blk;
filled++;
}
page->used += filled;
if (page->free_list) {
void* blk = page->free_list;
page->free_list = *(void**)blk;
page->used++;
((uint8_t*)blk)[0] = header_byte;
return SMALL_V6_USER_FROM_BASE(blk);
}
if (ctx->tls_count_c4 > 0) {
void* blk = ctx->tls_freelist_c4[--ctx->tls_count_c4];
return SMALL_V6_USER_FROM_BASE(blk);
}
}
return NULL;
}

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docs/analysis/REGIONID_V6_DESIGN.md
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20
hakmem.d
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@ -105,6 +105,12 @@ hakmem.o: core/hakmem.c core/hakmem.h core/hakmem_build_flags.h \
core/box/../front/../box/smallobject_hotbox_v3_env_box.h \ core/box/../front/../box/smallobject_hotbox_v3_env_box.h \
core/box/../front/../box/smallobject_hotbox_v4_box.h \ core/box/../front/../box/smallobject_hotbox_v4_box.h \
core/box/../front/../box/smallobject_hotbox_v5_box.h \ core/box/../front/../box/smallobject_hotbox_v5_box.h \
core/box/../front/../box/smallobject_core_v6_box.h \
core/box/../front/../box/smallobject_v6_env_box.h \
core/box/../front/../box/tiny_route_env_box.h \
core/box/../front/../box/free_dispatch_stats_box.h \
core/box/../front/../box/smallobject_hotbox_v4_env_box.h \
core/box/../front/../box/smallobject_v5_env_box.h \
core/box/../front/../box/tiny_c7_ultra_box.h \ core/box/../front/../box/tiny_c7_ultra_box.h \
core/box/../front/../box/tiny_c7_ultra_segment_box.h \ core/box/../front/../box/tiny_c7_ultra_segment_box.h \
core/box/../front/../box/tiny_c6_ultra_free_box.h \ core/box/../front/../box/tiny_c6_ultra_free_box.h \
@ -119,10 +125,6 @@ hakmem.o: core/hakmem.c core/hakmem.h core/hakmem_build_flags.h \
core/box/../front/../box/free_path_stats_box.h \ core/box/../front/../box/free_path_stats_box.h \
core/box/../front/../box/tiny_front_hot_box.h \ core/box/../front/../box/tiny_front_hot_box.h \
core/box/../front/../box/tiny_ptr_convert_box.h \ core/box/../front/../box/tiny_ptr_convert_box.h \
core/box/../front/../box/tiny_route_env_box.h \
core/box/../front/../box/free_dispatch_stats_box.h \
core/box/../front/../box/smallobject_hotbox_v4_env_box.h \
core/box/../front/../box/smallobject_v5_env_box.h \
core/box/../front/../box/tiny_front_stats_box.h \ core/box/../front/../box/tiny_front_stats_box.h \
core/box/../front/../box/free_path_stats_box.h \ core/box/../front/../box/free_path_stats_box.h \
core/box/../front/../box/alloc_gate_stats_box.h \ core/box/../front/../box/alloc_gate_stats_box.h \
@ -309,6 +311,12 @@ core/box/../front/../box/../superslab/superslab_inline.h:
core/box/../front/../box/smallobject_hotbox_v3_env_box.h: core/box/../front/../box/smallobject_hotbox_v3_env_box.h:
core/box/../front/../box/smallobject_hotbox_v4_box.h: core/box/../front/../box/smallobject_hotbox_v4_box.h:
core/box/../front/../box/smallobject_hotbox_v5_box.h: core/box/../front/../box/smallobject_hotbox_v5_box.h:
core/box/../front/../box/smallobject_core_v6_box.h:
core/box/../front/../box/smallobject_v6_env_box.h:
core/box/../front/../box/tiny_route_env_box.h:
core/box/../front/../box/free_dispatch_stats_box.h:
core/box/../front/../box/smallobject_hotbox_v4_env_box.h:
core/box/../front/../box/smallobject_v5_env_box.h:
core/box/../front/../box/tiny_c7_ultra_box.h: core/box/../front/../box/tiny_c7_ultra_box.h:
core/box/../front/../box/tiny_c7_ultra_segment_box.h: core/box/../front/../box/tiny_c7_ultra_segment_box.h:
core/box/../front/../box/tiny_c6_ultra_free_box.h: core/box/../front/../box/tiny_c6_ultra_free_box.h:
@ -323,10 +331,6 @@ core/box/../front/../box/tiny_front_v3_env_box.h:
core/box/../front/../box/free_path_stats_box.h: core/box/../front/../box/free_path_stats_box.h:
core/box/../front/../box/tiny_front_hot_box.h: core/box/../front/../box/tiny_front_hot_box.h:
core/box/../front/../box/tiny_ptr_convert_box.h: core/box/../front/../box/tiny_ptr_convert_box.h:
core/box/../front/../box/tiny_route_env_box.h:
core/box/../front/../box/free_dispatch_stats_box.h:
core/box/../front/../box/smallobject_hotbox_v4_env_box.h:
core/box/../front/../box/smallobject_v5_env_box.h:
core/box/../front/../box/tiny_front_stats_box.h: core/box/../front/../box/tiny_front_stats_box.h:
core/box/../front/../box/free_path_stats_box.h: core/box/../front/../box/free_path_stats_box.h:
core/box/../front/../box/alloc_gate_stats_box.h: core/box/../front/../box/alloc_gate_stats_box.h: