зеркало из https://github.com/microsoft/git.git
64 строки
1.6 KiB
C
64 строки
1.6 KiB
C
#ifndef MEM_POOL_H
|
|
#define MEM_POOL_H
|
|
|
|
struct mp_block {
|
|
struct mp_block *next_block;
|
|
char *next_free;
|
|
char *end;
|
|
uintmax_t space[FLEX_ARRAY]; /* more */
|
|
};
|
|
|
|
struct mem_pool {
|
|
struct mp_block *mp_block;
|
|
|
|
/*
|
|
* The amount of available memory to grow the pool by.
|
|
* This size does not include the overhead for the mp_block.
|
|
*/
|
|
size_t block_alloc;
|
|
|
|
/* The total amount of memory allocated by the pool. */
|
|
size_t pool_alloc;
|
|
};
|
|
|
|
/*
|
|
* Initialize mem_pool with specified initial size.
|
|
*/
|
|
void mem_pool_init(struct mem_pool *pool, size_t initial_size);
|
|
|
|
/*
|
|
* Discard all the memory the memory pool is responsible for.
|
|
*/
|
|
void mem_pool_discard(struct mem_pool *pool, int invalidate_memory);
|
|
|
|
/*
|
|
* Alloc memory from the mem_pool.
|
|
*/
|
|
void *mem_pool_alloc(struct mem_pool *pool, size_t len);
|
|
|
|
/*
|
|
* Allocate and zero memory from the memory pool.
|
|
*/
|
|
void *mem_pool_calloc(struct mem_pool *pool, size_t count, size_t size);
|
|
|
|
/*
|
|
* Allocate memory from the memory pool and copy str into it.
|
|
*/
|
|
char *mem_pool_strdup(struct mem_pool *pool, const char *str);
|
|
char *mem_pool_strndup(struct mem_pool *pool, const char *str, size_t len);
|
|
|
|
/*
|
|
* Move the memory associated with the 'src' pool to the 'dst' pool. The 'src'
|
|
* pool will be empty and not contain any memory. It still needs to be free'd
|
|
* with a call to `mem_pool_discard`.
|
|
*/
|
|
void mem_pool_combine(struct mem_pool *dst, struct mem_pool *src);
|
|
|
|
/*
|
|
* Check if a memory pointed at by 'mem' is part of the range of
|
|
* memory managed by the specified mem_pool.
|
|
*/
|
|
int mem_pool_contains(struct mem_pool *pool, void *mem);
|
|
|
|
#endif
|