From 3727e2645652b61d47fbae987675032eff7d398f Mon Sep 17 00:00:00 2001
From: Dmitry Stogov <dmitry@zend.com>
Date: Tue, 25 Nov 2014 14:17:21 +0300
Subject: [PATCH] Improved zend_hash_clean() and added new optimized
 zend_symtable_clean()

---
 Zend/zend_execute.c   |  4 +--
 Zend/zend_hash.c      | 66 +++++++++++++++++++++++++++++++++++++------
 Zend/zend_hash.h      |  1 +
 Zend/zend_variables.c |  2 +-
 4 files changed, 62 insertions(+), 11 deletions(-)

diff --git a/Zend/zend_execute.c b/Zend/zend_execute.c
index 9ef06d25c1..5274f100e1 100644
--- a/Zend/zend_execute.c
+++ b/Zend/zend_execute.c
@@ -1421,12 +1421,12 @@ ZEND_API void execute_internal(zend_execute_data *execute_data, zval *return_val
 ZEND_API void zend_clean_and_cache_symbol_table(zend_array *symbol_table TSRMLS_DC) /* {{{ */
 {
 	if (EG(symtable_cache_ptr) >= EG(symtable_cache_limit)) {
-		zend_hash_destroy(&symbol_table->ht);
+		zend_array_destroy(&symbol_table->ht TSRMLS_CC);
 		efree_size(symbol_table, sizeof(zend_array));
 	} else {
 		/* clean before putting into the cache, since clean
 		   could call dtors, which could use cached hash */
-		zend_hash_clean(&symbol_table->ht);
+		zend_symtable_clean(&symbol_table->ht TSRMLS_CC);
 		*(++EG(symtable_cache_ptr)) = symbol_table;
 	}
 }
diff --git a/Zend/zend_hash.c b/Zend/zend_hash.c
index 2a7cb5a4b8..0f77ca6048 100644
--- a/Zend/zend_hash.c
+++ b/Zend/zend_hash.c
@@ -989,21 +989,71 @@ ZEND_API void zend_array_destroy(HashTable *ht TSRMLS_DC)
 
 ZEND_API void zend_hash_clean(HashTable *ht)
 {
-	uint32_t idx;
-	Bucket *p;
+	Bucket *p, *end;
 
 	IS_CONSISTENT(ht);
 
-	for (idx = 0; idx < ht->nNumUsed; idx++) {
-		p = ht->arData + idx;
-		if (Z_TYPE(p->val) == IS_UNDEF) continue;
+	if (ht->nNumUsed) {
+		p = ht->arData;
+		end = p + ht->nNumUsed;
 		if (ht->pDestructor) {
-			ht->pDestructor(&p->val);
+			if (ht->u.flags & HASH_FLAG_PACKED) {
+				do {
+					if (EXPECTED(Z_TYPE(p->val) != IS_UNDEF)) {
+						ht->pDestructor(&p->val);
+					}
+				} while (++p != end);
+			} else {
+				do {
+					if (EXPECTED(Z_TYPE(p->val) != IS_UNDEF)) {
+						ht->pDestructor(&p->val);
+						if (EXPECTED(p->key)) {
+							zend_string_release(p->key);
+						}
+					}
+				} while (++p != end);
+			}
+		} else {
+			if (!(ht->u.flags & HASH_FLAG_PACKED)) {
+				do {
+					if (EXPECTED(Z_TYPE(p->val) != IS_UNDEF)) {
+						if (EXPECTED(p->key)) {
+							zend_string_release(p->key);
+						}
+					}
+				} while (++p != end);
+			}
 		}
-		if (p->key) {
-			zend_string_release(p->key);
+	}
+	ht->nNumUsed = 0;
+	ht->nNumOfElements = 0;
+	ht->nNextFreeElement = 0;
+	ht->nInternalPointer = INVALID_IDX;
+	if (ht->nTableMask) {
+		if (!(ht->u.flags & HASH_FLAG_PACKED)) {
+			memset(ht->arHash, INVALID_IDX, ht->nTableSize * sizeof(uint32_t));	
 		}
 	}
+}
+
+ZEND_API void zend_symtable_clean(HashTable *ht TSRMLS_DC)
+{
+	Bucket *p, *end;
+
+	IS_CONSISTENT(ht);
+
+	if (ht->nNumUsed) {
+		p = ht->arData;
+		end = p + ht->nNumUsed;
+		do {
+			if (EXPECTED(Z_TYPE(p->val) != IS_UNDEF)) {
+				i_zval_ptr_dtor(&p->val ZEND_FILE_LINE_CC TSRMLS_CC);
+				if (EXPECTED(p->key)) {
+					zend_string_release(p->key);
+				}
+			}
+		} while (++p != end);
+	}
 	ht->nNumUsed = 0;
 	ht->nNumOfElements = 0;
 	ht->nNextFreeElement = 0;
diff --git a/Zend/zend_hash.h b/Zend/zend_hash.h
index 435e92494c..8f12b0e66e 100644
--- a/Zend/zend_hash.h
+++ b/Zend/zend_hash.h
@@ -217,6 +217,7 @@ ZEND_API int zend_hash_rehash(HashTable *ht);
 
 ZEND_API void zend_array_dup(HashTable *target, HashTable *source);
 ZEND_API void zend_array_destroy(HashTable *ht TSRMLS_DC);
+ZEND_API void zend_symtable_clean(HashTable *ht TSRMLS_DC);
 
 #if ZEND_DEBUG
 /* debug */
diff --git a/Zend/zend_variables.c b/Zend/zend_variables.c
index 1d3c0d2dcb..548d191cfd 100644
--- a/Zend/zend_variables.c
+++ b/Zend/zend_variables.c
@@ -298,7 +298,7 @@ ZEND_API void _zval_ptr_dtor_wrapper(zval *zval_ptr)
 {
 	TSRMLS_FETCH();
 
-	i_zval_ptr_dtor(zval_ptr ZEND_FILE_LINE_RELAY_CC TSRMLS_CC);
+	i_zval_ptr_dtor(zval_ptr ZEND_FILE_LINE_CC TSRMLS_CC);
 }
 
 
-- 
2.40.0