52c65da783
- SmallHeapCtx/SmallPageMeta/SmallClassHeap typedef alias 追加 - SmallSegment struct (base/num_pages/owner_tid/magic) を smallsegment_v4_box.h に定義 - SmallColdIface_v4 direct function prototypes (refill/retire/remote_push/drain) - smallobject_hotbox_v4.c の internal/public API 分離（small_segment_v4_internal） - direct function stubs 実装（SmallColdIfaceV4 delegate 形式） - ENV OFF デフォルト（ENABLED=0/CLASSES=0）で既存挙動 100% 不変 - ビルド成功・sanity 確認（mixed/C6-heavy、segv/assert なし） - CURRENT_TASK.md に Phase v4-mid-0 記録 🤖 Generated with Claude Code Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
// smallobject_hotbox_v4_box.h - SmallObject HotHeap v4 (型スケルトン)
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//
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// 役割:
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// - v4 のページ / クラス / TLS コンテキスト型と API 宣言だけを定義する箱。
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// - 挙動はまだ v3/v1 のまま。alloc/free 本体は後続フェーズで実装する。
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#pragma once
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#include <stddef.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include "tiny_geometry_box.h"
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#ifndef SMALLOBJECT_NUM_CLASSES
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#define SMALLOBJECT_NUM_CLASSES TINY_NUM_CLASSES
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#endif
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struct small_segment_v4;
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// Page metadata for v4 HotBox
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typedef struct small_page_v4 {
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void* freelist;
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uint16_t used;
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uint16_t capacity;
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uint8_t class_idx;
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uint8_t flags;
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uint32_t block_size;
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uint8_t* base;
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void* slab_ref; // Superslab / lease token (box境界で扱う)
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struct small_segment_v4* segment; // PF3: segment owner（NULLなら Tiny v1 経路）
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struct small_page_v4* next;
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} small_page_v4;
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// Per-class heap state (current / partial / full lists)
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typedef struct small_class_heap_v4 {
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small_page_v4* current;
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small_page_v4* partial_head;
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small_page_v4* full_head;
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uint32_t partial_count;
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} small_class_heap_v4;
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// TLS heap context (per-thread)
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typedef struct small_heap_ctx_v4 {
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small_class_heap_v4 cls[SMALLOBJECT_NUM_CLASSES];
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} small_heap_ctx_v4;
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// TLS accessor (実装は後続フェーズで追加)
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// SmallPageMeta を external で使う場合のエイリアス
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typedef small_page_v4 SmallPageMeta;
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typedef small_class_heap_v4 SmallClassHeap;
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typedef small_heap_ctx_v4 SmallHeapCtx;
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small_heap_ctx_v4* small_heap_ctx_v4_get(void);
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// Hot path API (C7-only stub; later phases will expand)
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void* small_heap_alloc_fast_v4(small_heap_ctx_v4* ctx, int class_idx);
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void small_heap_free_fast_v4(small_heap_ctx_v4* ctx, int class_idx, void* ptr);
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int smallobject_hotbox_v4_can_own(int class_idx, void* ptr);
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