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Even more debug info

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This commit is contained in:
Andrey Hristov 2008-06-24 06:56:36 +00:00
parent 9c3ebd10bb
commit f93e715fc5
1 changed files with 22 additions and 6 deletions
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28
ext/mysqlnd/mysqlnd_palloc.c
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@ -67,6 +67,8 @@ PHPAPI MYSQLND_ZVAL_PCACHE* _mysqlnd_palloc_init_cache(unsigned int cache_size T
/* One more for empty position of last_added - always 0x0, bounds checking */
ret->free_list.ptr_line = calloc(ret->max_items + 1, sizeof(mysqlnd_zval *));
ret->free_list.last_added = ret->free_list.ptr_line + ret->max_items;
ret->free_list.canary1 = (void*)0xBEEF;
ret->free_list.canary2 = (void*)0xAFFE;
/* 3. Allocate and initialize our zvals and initialize the free list */
ret->block = calloc(ret->max_items, sizeof(mysqlnd_zval));
@ -154,7 +156,10 @@ PHPAPI MYSQLND_THD_ZVAL_PCACHE* _mysqlnd_palloc_init_thd_cache(MYSQLND_ZVAL_PCAC
ret->gc_list.ptr_line = calloc(cache->max_items, sizeof(mysqlnd_zval *));
/* Backward and forward looping is possible */
ret->gc_list.last_added = ret->gc_list.ptr_line;
ret->gc_list.canary1 = (void*)0xCAFE;
ret->gc_list.canary2 = (void*)0x190280;
DBG_INF_FMT("ptr_line=%p last_added=%p", ret->gc_list.ptr_line, ret->gc_list.last_added);
DBG_RETURN(ret);
}
/* }}} */
@ -166,7 +171,8 @@ MYSQLND_THD_ZVAL_PCACHE* _mysqlnd_palloc_get_thd_cache_reference(MYSQLND_THD_ZVA
DBG_ENTER("_mysqlnd_palloc_get_thd_cache_reference");
if (cache) {
++cache->references;
DBG_INF_FMT("cache=%p new_refc=%d", *cache, cache->references);
DBG_INF_FMT("cache=%p new_refc=%d gc_list.canary1=%p gc_list.canary2=%p",
*cache, cache->references, cache->gc_list.canary1, cache->gc_list.canary2);
mysqlnd_palloc_get_cache_reference(cache->parent);
}
DBG_RETURN(cache);
@ -202,7 +208,10 @@ PHPAPI void _mysqlnd_palloc_free_thd_cache_reference(MYSQLND_THD_ZVAL_PCACHE **c
DBG_ENTER("_mysqlnd_palloc_free_thd_cache_reference");
if (*cache) {
--(*cache)->parent->references;
DBG_INF_FMT("cache=%p references_left=%d", *cache, (*cache)->references);
DBG_INF_FMT("cache=%p references_left=%d canary1=%p canary2=%p",
*cache, (*cache)->references, (*cache)->gc_list.canary1, (*cache)->gc_list.canary2);
DBG_INF_FMT("gc_list.ptr_line=%p gc_list.last_added=%p", (*cache)->gc_list.ptr_line, (*cache)->gc_list.last_added);
if (--(*cache)->references == 0) {
mysqlnd_palloc_free_thd_cache(*cache TSRMLS_CC);
@ -309,15 +318,19 @@ void *mysqlnd_palloc_get_zval(MYSQLND_THD_ZVAL_PCACHE * const thd_cache, zend_bo
DBG_INF_FMT("cache=%p *last_added=%p free_items=%d",
thd_cache, thd_cache->parent->free_list.last_added,
thd_cache->parent->free_items);
DBG_INF_FMT("gc_list.ptr_line=%p gc_list.last_added=%p gc_list.canary1=%p gc_list.canary2=%p",
thd_cache->gc_list.ptr_line, thd_cache->gc_list.last_added,
thd_cache->gc_list.canary1, thd_cache->gc_list.canary2);
}
if (thd_cache) {
MYSQLND_ZVAL_PCACHE *cache = thd_cache->parent;
LOCK_PCACHE(cache);
DBG_INF_FMT("free_items=%d free_list.ptr_line=%p free_list.last_added=%p *free_list.last_added=%p",
DBG_INF_FMT("free_items=%d free_list.ptr_line=%p free_list.last_added=%p *free_list.last_added=%p free_list.canary1=%p free_list.canary2=%p",
cache->free_items, cache->free_list.ptr_line, cache->free_list.last_added,
*cache->free_list.last_added);
*cache->free_list.last_added,
cache->free_list.canary1, cache->free_list.canary2);
/* We have max_items + 1 allocated block for free_list, thus we know if we */
if ((ret = *cache->free_list.last_added)) {
@ -367,6 +380,8 @@ void mysqlnd_palloc_zval_ptr_dtor(zval **zv, MYSQLND_THD_ZVAL_PCACHE * const thd
thd_cache->parent->block,
thd_cache->parent->last_in_block,
*zv, Z_REFCOUNT_PP(zv), type);
DBG_INF_FMT("gc_list.ptr_line=%p gc_list.last_added=%p gc_list.canary1=%p gc_list.canary2=%p",
thd_cache->gc_list.ptr_line, thd_cache->gc_list.last_added, thd_cache->gc_list.canary1, thd_cache->gc_list.canary2);
}
*copy_ctor_called = FALSE;
/* Check whether cache is used and the zval is from the cache */
@ -442,10 +457,11 @@ void mysqlnd_palloc_zval_ptr_dtor(zval **zv, MYSQLND_THD_ZVAL_PCACHE * const thd
shutdown :(.
*/
LOCK_PCACHE(cache);
DBG_INF_FMT("gc_list.ptr_line=%p gc_list.last_added=%p *gc_list.last_added=%p",
DBG_INF_FMT("gc_list.ptr_line=%p gc_list.last_added=%p *gc_list.last_added=%p free_list.canary1=%p free_list.canary2=%p",
thd_cache->gc_list.ptr_line,
thd_cache->gc_list.last_added,
*thd_cache->gc_list.last_added);
*thd_cache->gc_list.last_added,
cache->free_list.canary1, cache->free_list.canary2);
if ((thd_cache->gc_list.last_added - thd_cache->gc_list.ptr_line) > cache->max_items) {
DBG_ERR("Buffer overflow follows");
DBG_ERR_FMT("parent->max_items=%d parent->free_items=%d diff=%d",