Changeset 27711 in webkit for trunk/JavaScriptCore/kjs

Timestamp:

Nov 12, 2007, 12:00:29 AM (18 years ago)

Author:

oliver

Message:

Add special fastZeroedMalloc function to replace a
number of fastCalloc calls where one argument was 1.

Reviewed by Darin.

This results in a 0.4% progression in SunSpider, more
than making up for the earlier regression caused by
additional overflow checks.

Location:

trunk/JavaScriptCore/kjs

Files:

• array_instance.cpp (modified) (1 diff)
• property_map.cpp (modified) (2 diffs)

trunk/JavaScriptCore/kjs/array_instance.cpp

@@ -76 +76 @@
     m_length = initialLength;
     m_vectorLength = initialCapacity;
-    m_storage = static_cast<ArrayStorage*>(fastCalloc(storageSize(initialCapacity), 1));
+    m_storage = static_cast<ArrayStorage*>(fastZeroedMalloc(storageSize(initialCapacity)));
 
     Collector::reportExtraMemoryCost(initialCapacity * sizeof(JSValue*));

trunk/JavaScriptCore/kjs/property_map.cpp

@@ -510 +510 @@
 #endif
 
-    m_u.table = static_cast<Table*>(fastCalloc(1, Table::allocationSize(newTableSize)));
+    m_u.table = static_cast<Table*>(fastZeroedMalloc(Table::allocationSize(newTableSize)));
     m_u.table->size = newTableSize;
     m_u.table->sizeMask = newTableSize - 1;
@@ -535 +535 @@
     Table* oldTable = m_u.table;
     
-    m_u.table = static_cast<Table*>(fastCalloc(1, Table::allocationSize(newTableSize)));
+    m_u.table = static_cast<Table*>(fastZeroedMalloc(Table::allocationSize(newTableSize)));
     m_u.table->size = newTableSize;
     m_u.table->sizeMask = newTableSize - 1;