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/* $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_ */ |