75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
// smallobject_hotbox_v3_box.h - SmallObject HotHeap v3 (C7-first skeleton)
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//
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// Phase A/B: 型と TLS / stats を用意し、front が呼べる枠を置く。
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// まだ中身は v1 fallback（so_alloc は NULL を返す）。
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#pragma once
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#include <stdint.h>
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#include <stddef.h>
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#include <stdatomic.h>
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#include "tiny_geometry_box.h"
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#include "smallobject_hotbox_v3_env_box.h"
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#include "tiny_region_id.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 tiny_heap_page_t;
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struct TinySlabMeta;
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struct SuperSlab;
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typedef struct so_page_v3 {
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void* freelist;
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uint32_t used;
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uint32_t capacity;
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uint32_t block_size;
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uint32_t class_idx;
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uint32_t flags;
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void* base; // carve 後のユーザ領域先頭
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void* slab_base; // 64KiB slab 基底（page_of 用ヘッダを書き込む）
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struct TinySlabMeta* meta;
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struct SuperSlab* ss;
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uint16_t slab_idx;
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struct tiny_heap_page_t* lease_page;
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void* slab_ref; // kept as a generic token; currently same as lease_page for v1
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struct so_page_v3* next;
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} so_page_v3;
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typedef struct so_class_v3 {
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so_page_v3* current;
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so_page_v3* partial;
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uint16_t max_partial_pages;
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uint16_t partial_count;
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uint32_t block_size;
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} so_class_v3;
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typedef struct so_ctx_v3 {
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so_class_v3 cls[SMALLOBJECT_NUM_CLASSES];
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} so_ctx_v3;
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typedef struct so_stats_class_v3 {
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_Atomic uint64_t route_hits;
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_Atomic uint64_t alloc_calls;
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_Atomic uint64_t alloc_refill;
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_Atomic uint64_t alloc_fallback_v1;
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_Atomic uint64_t free_calls;
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_Atomic uint64_t free_fallback_v1;
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} so_stats_class_v3;
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// Stats helpers (defined in core/smallobject_hotbox_v3.c)
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int so_v3_stats_enabled(void);
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void so_v3_record_route_hit(uint8_t ci);
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void so_v3_record_alloc_call(uint8_t ci);
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void so_v3_record_alloc_refill(uint8_t ci);
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void so_v3_record_alloc_fallback(uint8_t ci);
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void so_v3_record_free_call(uint8_t ci);
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void so_v3_record_free_fallback(uint8_t ci);
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// TLS accessor (core/smallobject_hotbox_v3.c)
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so_ctx_v3* so_tls_get(void);
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// Hot path API (Phase B: stub → always fallback to v1)
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void* so_alloc(uint32_t class_idx);
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void so_free(uint32_t class_idx, void* ptr);
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