38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
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/*
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* memory buffer pool support
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*/
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#ifndef _LINUX_MEMPOOL_H
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#define _LINUX_MEMPOOL_H
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#include <linux/wait.h>
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typedef void * (mempool_alloc_t)(unsigned int __nocast gfp_mask, void *pool_data);
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typedef void (mempool_free_t)(void *element, void *pool_data);
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typedef struct mempool_s {
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spinlock_t lock;
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int min_nr; /* nr of elements at *elements */
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int curr_nr; /* Current nr of elements at *elements */
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void **elements;
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void *pool_data;
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mempool_alloc_t *alloc;
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mempool_free_t *free;
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wait_queue_head_t wait;
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} mempool_t;
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extern mempool_t * mempool_create(int min_nr, mempool_alloc_t *alloc_fn,
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mempool_free_t *free_fn, void *pool_data);
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extern int mempool_resize(mempool_t *pool, int new_min_nr, unsigned int __nocast gfp_mask);
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extern void mempool_destroy(mempool_t *pool);
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extern void * mempool_alloc(mempool_t *pool, unsigned int __nocast gfp_mask);
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extern void mempool_free(void *element, mempool_t *pool);
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/*
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* A mempool_alloc_t and mempool_free_t that get the memory from
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* a slab that is passed in through pool_data.
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*/
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void *mempool_alloc_slab(unsigned int __nocast gfp_mask, void *pool_data);
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void mempool_free_slab(void *element, void *pool_data);
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#endif /* _LINUX_MEMPOOL_H */
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