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>
27 lines
1.1 KiB
C
27 lines
1.1 KiB
C
// smallsegment_v4_box.h - Small-object専用 Segment Box の型定義と API 宣言
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// Phase v4-mid-0: SmallSegment の型と API だけを先行定義。実装は後フェーズ。
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#pragma once
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#include <stdint.h>
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// Forward declaration for SmallPageMeta
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struct small_page_v4;
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// SmallSegment: class_idx ごとに小さな segment を管理
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// 基本構造: base, page metadata array
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typedef struct small_segment_v4 {
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uintptr_t base; // Segment base address
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uint32_t num_pages; // Number of pages in segment
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uint32_t owner_tid; // Thread ID that owns this segment
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uint32_t magic; // Magic number for validation
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// Page metadata array (flexible, actual size depends on SMALL_PAGE_SIZE / SMALL_SEGMENT_SIZE)
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// struct small_page_v4* page_meta[];
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} small_segment_v4;
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// API: Segment 取得・解放
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small_segment_v4* smallsegment_v4_acquire(int class_idx);
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void smallsegment_v4_release_if_empty(small_segment_v4* seg, void* page, int class_idx);
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// API: ページメタデータの取得
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struct small_page_v4* smallsegment_v4_page_meta_of(small_segment_v4* seg, void* ptr);
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