99 lines
3.7 KiB
C
99 lines
3.7 KiB
C
// tiny_hotheap_v2_box.h - TinyHotHeap v2 skeleton (Step1: types & stubs only)
|
||
// 役割:
|
||
// - TinyHotHeap v2 の型と API を先行定義するが、現行経路には配線しない。
|
||
// - HAKMEM_TINY_HOTHEAP_V2 / HAKMEM_TINY_HOTHEAP_CLASSES で将来の A/B に備える。
|
||
// メモ (Phase35):
|
||
// - 現状の v2 は C7-only でも v1 より遅く、mixed では大きな回帰が確認されている。
|
||
// - 研究用/実験用フラグを明示的に立てたときだけ使用し、デフォルトは OFF とする。
|
||
#pragma once
|
||
|
||
#include <stdint.h>
|
||
#include <string.h>
|
||
|
||
#ifndef TINY_HOTHEAP_MAX_CLASSES
|
||
#define TINY_HOTHEAP_MAX_CLASSES 8 // とりあえず全クラス分確保（後で mask で限定）
|
||
#endif
|
||
|
||
struct TinySlabMeta;
|
||
struct SuperSlab;
|
||
struct tiny_heap_page_t; // from tiny_heap_box.h (v1 page型)
|
||
|
||
typedef struct tiny_hotheap_page_v2 {
|
||
void* freelist;
|
||
uint16_t used;
|
||
uint16_t capacity;
|
||
uint16_t slab_idx;
|
||
uint16_t flags; // future use (HOT/PARTIAL/FULL)
|
||
void* base;
|
||
struct TinySlabMeta* meta; // Superslab slab meta（Cold 側は v1 が保持）
|
||
struct SuperSlab* ss; // Owning Superslab（Cold 側は v1 に委譲）
|
||
struct tiny_heap_page_t* lease_page; // v1 側の page 構造体（freelist/used は lease_page と同期させる）
|
||
struct tiny_hotheap_page_v2* next;
|
||
} tiny_hotheap_page_v2;
|
||
|
||
typedef struct tiny_hotheap_class_v2 {
|
||
tiny_hotheap_page_v2* current_page;
|
||
tiny_hotheap_page_v2* partial_pages;
|
||
tiny_hotheap_page_v2* full_pages;
|
||
uint16_t stride;
|
||
uint16_t max_partial_pages; // 空ページを保持する上限（C7 専用で 1〜2 を想定）
|
||
uint16_t partial_count; // いま握っている partial の枚数
|
||
tiny_hotheap_page_v2 storage_page; // C7 専用の 1 枚だけをまず保持（Phase36: reuse when空き）
|
||
} tiny_hotheap_class_v2;
|
||
|
||
typedef struct tiny_hotheap_ctx_v2 {
|
||
tiny_hotheap_class_v2 cls[TINY_HOTHEAP_MAX_CLASSES];
|
||
} tiny_hotheap_ctx_v2;
|
||
|
||
// TLS state (定義は core/hakmem_tiny.c)
|
||
extern __thread tiny_hotheap_ctx_v2* g_tiny_hotheap_ctx_v2;
|
||
|
||
// API (Step1: まだ中身はダミー)
|
||
tiny_hotheap_ctx_v2* tiny_hotheap_v2_tls_get(void);
|
||
void* tiny_hotheap_v2_alloc(uint8_t class_idx);
|
||
void tiny_hotheap_v2_free(uint8_t class_idx, void* p, void* meta);
|
||
void tiny_hotheap_v2_record_route_fallback(uint8_t class_idx);
|
||
void tiny_hotheap_v2_record_free_fallback(uint8_t class_idx);
|
||
|
||
typedef struct tiny_hotheap_v2_stats_snapshot {
|
||
uint64_t route_hits;
|
||
uint64_t alloc_calls;
|
||
uint64_t alloc_fast;
|
||
uint64_t alloc_lease;
|
||
uint64_t alloc_refill;
|
||
uint64_t alloc_fallback_v1;
|
||
uint64_t alloc_route_fb;
|
||
uint64_t free_calls;
|
||
uint64_t free_fast;
|
||
uint64_t free_fallback_v1;
|
||
uint64_t cold_refill_fail;
|
||
uint64_t cold_retire_calls;
|
||
uint64_t retire_calls_v2;
|
||
uint64_t prepare_calls;
|
||
uint64_t prepare_with_current_null;
|
||
uint64_t prepare_from_partial;
|
||
uint64_t free_made_current;
|
||
uint64_t page_retired;
|
||
uint64_t partial_pushes;
|
||
uint64_t partial_pops;
|
||
uint64_t partial_peak;
|
||
uint64_t refill_with_current;
|
||
uint64_t refill_with_partial;
|
||
} tiny_hotheap_v2_stats_snapshot_t;
|
||
|
||
void tiny_hotheap_v2_debug_snapshot(tiny_hotheap_v2_stats_snapshot_t* out);
|
||
|
||
static inline void tiny_hotheap_v2_page_reset(tiny_hotheap_page_v2* page) {
|
||
if (!page) return;
|
||
page->freelist = NULL;
|
||
page->used = 0;
|
||
page->capacity = 0;
|
||
page->slab_idx = 0;
|
||
page->flags = 0;
|
||
page->base = NULL;
|
||
page->meta = NULL;
|
||
page->ss = NULL;
|
||
page->lease_page = NULL;
|
||
page->next = NULL;
|
||
}
|