69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
/* $OpenBSD: pool.h,v 1.2 2017/08/11 14:58:56 jasper Exp $ */
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/*
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* Copyright (c) 2017 Martin Pieuchot
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _POOL_H_
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#define _POOL_H_
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#ifndef NOPOOL
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struct pool {
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SIMPLEQ_ENTRY(pool) pr_list; /* list of all pools */
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const char *pr_name; /* identifier */
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SLIST_HEAD(, pool_item) pr_free; /* free list */
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size_t pr_nmemb; /* # of items per allocation */
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size_t pr_size; /* size of an item */
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size_t pr_nitems; /* # of available items */
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size_t pr_nfree; /* # items on the free list */
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};
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void pool_init(struct pool *, const char *, size_t, size_t);
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void *pool_get(struct pool *);
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void pool_put(struct pool *, void *);
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void pool_dump(void);
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static inline void *
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pmalloc(struct pool *pp, size_t sz)
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{
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return pool_get(pp);
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}
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static inline void *
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pzalloc(struct pool *pp, size_t sz)
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{
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char *p;
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p = pool_get(pp);
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memset(p, 0, sz);
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return p;
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}
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static inline void
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pfree(struct pool *pp, void *p)
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{
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pool_put(pp, p);
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}
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#else /* !NOPOOL */
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#define pmalloc(a, b) malloc(b)
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#define pzalloc(a, b) calloc(1, b)
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#define pfree(a, b) free(b)
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#endif /* NOPOOL */
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#endif /* _POOL_H_ */
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