Rickey Fehr
e00c51502b
This commit introduces an object pool and replaces instances of malloc with pools where sensible.
55 lines
2.6 KiB
C
55 lines
2.6 KiB
C
#ifndef POOL_H
|
|
#define POOL_H
|
|
|
|
#include <tonc.h>
|
|
|
|
#define POOL_BITS_PER_WORD 32
|
|
#define POOL_WORD_T u32
|
|
#define POOL_MAX_CAPACITY 128
|
|
|
|
typedef struct PoolBitmap {
|
|
u32 *w;
|
|
u32 nbits;
|
|
u32 nwords;
|
|
} PoolBitmap;
|
|
|
|
void pool_clear_idx(PoolBitmap *bm, int idx);
|
|
int pool_get_free_idx(PoolBitmap *bm);
|
|
|
|
#define DECLARE_POOL_TYPE(type) \
|
|
typedef struct type##Pool { \
|
|
PoolBitmap bm; \
|
|
type * objects; \
|
|
u32 max_entries; \
|
|
} type##Pool; \
|
|
type *pool_get_##type(type##Pool* pool); \
|
|
void pool_free_##type(type##Pool *pool, type *obj); \
|
|
void pool_init_##type(type##Pool *pool);
|
|
|
|
#define DEFINE_POOL_TYPE(type, capacity) \
|
|
static type type##_storage[capacity]; \
|
|
static u32 type##_bitmap_w[sizeof(POOL_WORD_T)] = {0}; \
|
|
static type##Pool type##_pool = { \
|
|
.bm = { \
|
|
.w = type##_bitmap_w, \
|
|
.nbits = POOL_BITS_PER_WORD, \
|
|
.nwords = sizeof(POOL_WORD_T)}, \
|
|
.objects = type##_storage, \
|
|
.max_entries = capacity, \
|
|
}; \
|
|
type * pool_get_##type(type##Pool *pool) { \
|
|
int free_offset = pool_get_free_idx(&pool->bm); \
|
|
if(free_offset == -1) return NULL; \
|
|
return &pool->objects[free_offset]; \
|
|
} \
|
|
void pool_free_##type(type##Pool *pool, type *entry) { \
|
|
if(entry == NULL) return; \
|
|
int offset = entry - &pool->objects[0]; \
|
|
pool_clear_idx(&pool->bm, offset); \
|
|
}
|
|
|
|
#define POOL_GET(type) pool_get_##type(&type##_pool)
|
|
#define POOL_FREE(type, obj) pool_free_##type(&type##_pool, obj)
|
|
|
|
#endif
|