Speed up unserialize() and fix a serious performance issue.

Obtained from:	PHP CVS

2 files changed, 107 insertions, 0 deletions

diff --git a/lang/php53/files/patch-ext::standard::php_var.h b/lang/php53/files/patch-ext::standard::php_var.h
new file mode 100644
index 000000000000..c3b01c3a9fd7
--- /dev/null
+++ b/lang/php53/files/patch-ext::standard::php_var.h
@@ -0,0 +1,20 @@
+--- ext/standard/php_var.h.orig	2004/09/05 16:29:04
++++ ext/standard/php_var.h	2005/01/15 18:18:08
+@@ -41,6 +41,7 @@ PHPAPI void php_debug_zval_dump(zval **s
+
+ struct php_unserialize_data {
+ 	void *first;
++	void *first_dtor;
+ };
+
+ typedef struct php_unserialize_data php_unserialize_data_t;
+@@ -54,7 +55,8 @@ PHPAPI int php_var_unserialize(zval **rv
+    zend_hash_destroy(&(var_hash))
+
+ #define PHP_VAR_UNSERIALIZE_INIT(var_hash) \
+-	(var_hash).first = 0
++	(var_hash).first = 0; \
++	(var_hash).first_dtor = 0
+ #define PHP_VAR_UNSERIALIZE_DESTROY(var_hash) \
+ 	var_destroy(&(var_hash))
+
diff --git a/lang/php53/files/patch-ext::standard::var_unserializer.c b/lang/php53/files/patch-ext::standard::var_unserializer.c
new file mode 100644
index 000000000000..930becda86ed
--- /dev/null
+++ b/lang/php53/files/patch-ext::standard::var_unserializer.c
@@ -0,0 +1,87 @@
+--- ext/standard/var_unserializer.c.orig	2004/12/03 16:02:48
++++ ext/standard/var_unserializer.c	2005/01/18 10:57:05
+@@ -56,6 +56,30 @@ static inline void var_push(php_unserial
+ 	var_hash->data[var_hash->used_slots++] = *rval;
+ }
+
++static inline void var_push_dtor(php_unserialize_data_t *var_hashx, zval **rval)
++{
++	var_entries *var_hash = var_hashx->first_dtor, *prev = NULL;
++
++	while (var_hash && var_hash->used_slots == VAR_ENTRIES_MAX) {
++		prev = var_hash;
++		var_hash = var_hash->next;
++	}
++
++	if (!var_hash) {
++		var_hash = emalloc(sizeof(var_entries));
++		var_hash->used_slots = 0;
++		var_hash->next = 0;
++
++		if (!var_hashx->first_dtor)
++			var_hashx->first_dtor = var_hash;
++		else
++			prev->next = var_hash;
++	}
++
++	(*rval)->refcount++;
++	var_hash->data[var_hash->used_slots++] = *rval;
++}
++
+ PHPAPI void var_replace(php_unserialize_data_t *var_hashx, zval *ozval, zval **nzval)
+ {
+ 	int i;
+@@ -93,6 +117,7 @@ static int var_access(php_unserialize_da
+ PHPAPI void var_destroy(php_unserialize_data_t *var_hashx)
+ {
+ 	void *next;
++	int i;
+ 	var_entries *var_hash = var_hashx->first;
+
+ 	while (var_hash) {
+@@ -100,6 +125,17 @@ PHPAPI void var_destroy(php_unserialize_
+ 		efree(var_hash);
+ 		var_hash = next;
+ 	}
++
++	var_hash = var_hashx->first_dtor;
++
++	while (var_hash) {
++		for (i = 0; i < var_hash->used_slots; i++) {
++			zval_ptr_dtor(&var_hash->data[i]);
++		}
++		next = var_hash->next;
++		efree(var_hash);
++		var_hash = next;
++	}
+ }
+
+ /* }}} */
+@@ -177,7 +213,7 @@ static inline size_t parse_uiv(const uns
+ static inline int process_nested_data(UNSERIALIZE_PARAMETER, HashTable *ht, int elements)
+ {
+ 	while (elements-- > 0) {
+-		zval *key, *data, *old_data;
++		zval *key, *data, **old_data;
+
+ 		ALLOC_INIT_ZVAL(key);
+
+@@ -205,14 +241,14 @@ static inline int process_nested_data(UN
+
+ 		switch (Z_TYPE_P(key)) {
+ 			case IS_LONG:
+-				if (zend_hash_index_find(ht, Z_LVAL_P(key), (void **)&old_data)) {
+-					var_replace(var_hash, old_data, rval);
++				if (zend_hash_index_find(ht, Z_LVAL_P(key), (void **)&old_data)==SUCCESS) {
++					var_push_dtor(var_hash, old_data);
+ 				}
+ 				zend_hash_index_update(ht, Z_LVAL_P(key), &data, sizeof(data), NULL);
+ 				break;
+ 			case IS_STRING:
+-				if (zend_hash_find(ht, Z_STRVAL_P(key), Z_STRLEN_P(key) + 1, (void **)&old_data)) {
+-					var_replace(var_hash, old_data, rval);
++				if (zend_hash_find(ht, Z_STRVAL_P(key), Z_STRLEN_P(key) + 1, (void **)&old_data)==SUCCESS) {
++					var_push_dtor(var_hash, old_data);
+ 				}
+ 				zend_hash_update(ht, Z_STRVAL_P(key), Z_STRLEN_P(key) + 1, &data, sizeof(data), NULL);
+ 				break;