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|
/*
+----------------------------------------------------------------------+
| PHP Version 6 |
+----------------------------------------------------------------------+
| Copyright (c) 2006-2008 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: |
| http://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: Georg Richter <georg@mysql.com> |
| Andrey Hristov <andrey@mysql.com> |
| Ulf Wendel <uwendel@mysql.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "php.h"
#include "mysqlnd.h"
#include "mysqlnd_priv.h"
#include "mysqlnd_statistics.h"
#define MYSQLND_SILENT
#ifdef ZTS
#define LOCK_QCACHE(cache) tsrm_mutex_lock((cache)->LOCK_access)
#define UNLOCK_QCACHE(cache) tsrm_mutex_unlock((cache)->LOCK_access)
#else
#define LOCK_QCACHE(cache)
#define UNLOCK_QCACHE(cache)
#endif
/* {{{ mysqlnd_qcache_init_cache */
PHPAPI MYSQLND_QCACHE * mysqlnd_qcache_init_cache()
{
MYSQLND_QCACHE *cache = calloc(1, sizeof(MYSQLND_QCACHE));
#ifndef MYSQLND_SILENT
php_printf("[mysqlnd_qcache_init_cache %p]\n", cache);
#endif
cache->references = 1;
#ifdef ZTS
cache->LOCK_access = tsrm_mutex_alloc();
#endif
cache->ht = malloc(sizeof(HashTable));
zend_hash_init(cache->ht, 10 /* init_elements */, NULL, NULL, TRUE /*pers*/);
return cache;
}
/* }}} */
/* {{{ mysqlnd_qcache_get_cache_reference */
PHPAPI MYSQLND_QCACHE * mysqlnd_qcache_get_cache_reference(MYSQLND_QCACHE * const cache)
{
if (cache) {
#ifndef MYSQLND_SILENT
php_printf("[mysqlnd_qcache_get_cache_reference %p will become %d]\n", cache, cache->references+1);
#endif
LOCK_QCACHE(cache);
cache->references++;
UNLOCK_QCACHE(cache);
}
return cache;
}
/* }}} */
/* {{{ mysqlnd_qcache_free_cache */
/*
As this call will happen on MSHUTDOWN(), then we don't need to copy the zvals with
copy_ctor but scrap what they point to with zval_dtor() and then just free our
pre-allocated block. Precondition is that we ZVAL_NULL() the zvals when we put them
to the free list after usage. We ZVAL_NULL() them when we allocate them in the
constructor of the cache.
*/
static
void mysqlnd_qcache_free_cache(MYSQLND_QCACHE *cache)
{
#ifndef MYSQLND_SILENT
php_printf("[mysqlnd_qcache_free_cache %p]\n", cache);
#endif
#ifdef ZTS
tsrm_mutex_free(cache->LOCK_access);
#endif
zend_hash_destroy(cache->ht);
free(cache->ht);
free(cache);
}
/* }}} */
/* {{{ mysqlnd_qcache_free_cache_reference */
PHPAPI void mysqlnd_qcache_free_cache_reference(MYSQLND_QCACHE **cache)
{
if (*cache) {
zend_bool to_free;
#ifndef MYSQLND_SILENT
php_printf("[mysqlnd_qcache_free_cache_reference %p] refs=%d\n", *cache, (*cache)->references);
#endif
LOCK_QCACHE(*cache);
to_free = --(*cache)->references == 0;
/* Unlock before destroying */
UNLOCK_QCACHE(*cache);
if (to_free) {
mysqlnd_qcache_free_cache(*cache);
}
*cache = NULL;
}
}
/* }}} */
/* {{{ mysqlnd_qcache_free_cache_reference */
PHPAPI void mysqlnd_qcache_stats(const MYSQLND_QCACHE * const cache, zval *return_value)
{
if (cache) {
LOCK_QCACHE(cache);
array_init(return_value);
add_assoc_long_ex(return_value, "references", sizeof("references"), cache->references);
UNLOCK_QCACHE(cache);
} else {
ZVAL_NULL(return_value);
}
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noet sw=4 ts=4 fdm=marker
* vim<600: noet sw=4 ts=4
*/
|
