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dis-bench / src /php /php-src /ext /mysqlnd /mysqlnd_block_alloc.c
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/*
+----------------------------------------------------------------------+
| Copyright (c) The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| https://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andrey Hristov <andrey@php.net> |
| Ulf Wendel <uw@php.net> |
| Dmitry Stogov <dmitry@php.net> |
+----------------------------------------------------------------------+
*/
#include "php.h"
#include "mysqlnd.h"
#include "mysqlnd_block_alloc.h"
#include "mysqlnd_debug.h"
#include "mysqlnd_priv.h"
/* {{{ mysqlnd_mempool_get_chunk */
static void *
mysqlnd_mempool_get_chunk(MYSQLND_MEMORY_POOL * pool, size_t size)
{
DBG_ENTER("mysqlnd_mempool_get_chunk");
DBG_RETURN(zend_arena_alloc(&pool->arena, size));
}
/* }}} */
/* {{{ mysqlnd_mempool_create */
PHPAPI MYSQLND_MEMORY_POOL *
mysqlnd_mempool_create(size_t arena_size)
{
zend_arena * arena;
MYSQLND_MEMORY_POOL * ret;
DBG_ENTER("mysqlnd_mempool_create");
arena = zend_arena_create(MAX(arena_size, ZEND_MM_ALIGNED_SIZE(sizeof(zend_arena))));
ret = zend_arena_alloc(&arena, sizeof(MYSQLND_MEMORY_POOL));
ret->arena = arena;
ret->checkpoint = NULL;
ret->get_chunk = mysqlnd_mempool_get_chunk;
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_mempool_destroy */
PHPAPI void
mysqlnd_mempool_destroy(MYSQLND_MEMORY_POOL * pool)
{
DBG_ENTER("mysqlnd_mempool_destroy");
/* mnd_free will reference LOCK_access and might crash, depending on the caller...*/
zend_arena_destroy(pool->arena);
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_mempool_save_state */
PHPAPI void
mysqlnd_mempool_save_state(MYSQLND_MEMORY_POOL * pool)
{
DBG_ENTER("mysqlnd_mempool_save_state");
pool->checkpoint = zend_arena_checkpoint(pool->arena);
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_mempool_restore_state */
PHPAPI void
mysqlnd_mempool_restore_state(MYSQLND_MEMORY_POOL * pool)
{
DBG_ENTER("mysqlnd_mempool_restore_state");
#if ZEND_DEBUG
ZEND_ASSERT(pool->checkpoint);
#endif
if (pool->checkpoint) {
zend_arena_release(&pool->arena, pool->checkpoint);
pool->checkpoint = NULL;
}
DBG_VOID_RETURN;
}
/* }}} */