Linux kernel mirror (for testing)
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linux
1/*
2 * memory buffer pool support
3 */
4#ifndef _LINUX_MEMPOOL_H
5#define _LINUX_MEMPOOL_H
6
7#include <linux/wait.h>
8
9typedef void * (mempool_alloc_t)(unsigned int __nocast gfp_mask, void *pool_data);
10typedef void (mempool_free_t)(void *element, void *pool_data);
11
12typedef struct mempool_s {
13 spinlock_t lock;
14 int min_nr; /* nr of elements at *elements */
15 int curr_nr; /* Current nr of elements at *elements */
16 void **elements;
17
18 void *pool_data;
19 mempool_alloc_t *alloc;
20 mempool_free_t *free;
21 wait_queue_head_t wait;
22} mempool_t;
23
24extern mempool_t *mempool_create(int min_nr, mempool_alloc_t *alloc_fn,
25 mempool_free_t *free_fn, void *pool_data);
26extern mempool_t *mempool_create_node(int min_nr, mempool_alloc_t *alloc_fn,
27 mempool_free_t *free_fn, void *pool_data, int nid);
28
29extern int mempool_resize(mempool_t *pool, int new_min_nr,
30 unsigned int __nocast gfp_mask);
31extern void mempool_destroy(mempool_t *pool);
32extern void * mempool_alloc(mempool_t *pool, unsigned int __nocast gfp_mask);
33extern void mempool_free(void *element, mempool_t *pool);
34
35/*
36 * A mempool_alloc_t and mempool_free_t that get the memory from
37 * a slab that is passed in through pool_data.
38 */
39void *mempool_alloc_slab(unsigned int __nocast gfp_mask, void *pool_data);
40void mempool_free_slab(void *element, void *pool_data);
41
42#endif /* _LINUX_MEMPOOL_H */