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/*
* Copyright (C) 2009 Joseph Adams <joeyadams3.14159@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef CCAN_BLOCK_POOL
#define CCAN_BLOCK_POOL
#include <ccan/talloc/talloc.h>
#include <string.h>
struct block_pool;
/* Construct a new block pool.
ctx is a talloc context (or NULL if you don't know what talloc is ;) ) */
struct block_pool *block_pool_new(void *ctx);
/* Same as block_pool_alloc, but allows you to manually specify alignment.
For instance, strings need not be aligned, so set align=1 for them.
align must be a power of two. */
void *block_pool_alloc_align(struct block_pool *bp, size_t size, size_t align);
/* Allocate a block of a given size. The returned pointer will remain valid
for the life of the block_pool. The block cannot be resized or
freed individually. */
static inline void *block_pool_alloc(struct block_pool *bp, size_t size) {
size_t align = size & -size; //greatest power of two by which size is divisible
if (align > 16)
align = 16;
return block_pool_alloc_align(bp, size, align);
}
static inline void block_pool_free(struct block_pool *bp) {
talloc_free(bp);
}
char *block_pool_strdup(struct block_pool *bp, const char *str);
static inline void *block_pool_memdup(struct block_pool *bp, const void *src, size_t size) {
void *ret = block_pool_alloc(bp, size);
memcpy(ret, src, size);
return ret;
}
#endif
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