Changeset 9009 in webkit for trunk/JavaScriptCore/kjs/identifier.cpp

Timestamp:

Apr 14, 2005, 6:26:26 PM (20 years ago)

Author:

mjs

Message:

Reviewed by Richard.

<rdar://problem/4089734> JavaScript iBench can be sped up ~10% with custom allocator

• use custom single-threaded malloc for all non-GC JavaScriptCore allocations, for a 9.1% speedup on JavaScript iBench

• JavaScriptCore.pbproj/project.pbxproj:
• kjs/collector.cpp: (KJS::Collector::allocate): Use dlmalloc to allocate the collector blocks. (KJS::Collector::collect): And dlfree to free it.
• kjs/fast_malloc.cpp: Added, just the standard dlmalloc here.
• kjs/fast_malloc.h: Added. Declarations for the functions. Also added a handy macro to give a class custom operator new/delete
• kjs/identifier.cpp: (KJS::Identifier::add): Use dlmalloc/dlfree.
• kjs/nodes.h: make nodes KJS_FAST_ALLOCATED.
• kjs/property_map.cpp: (KJS::PropertyMap::~PropertyMap): Use dlmalloc/dlfree. (KJS::PropertyMap::rehash): ditto
• kjs/scope_chain.h:
• kjs/ustring.cpp: (KJS::UString::Rep::createCopying): New named constructor that copies a passed-in buffer, to hide allocation details from webcore. (KJS::UString::UString): use createCopying when appropriate. (KJS::UString::Rep::destroy): Use dlmalloc/dlfree. (KJS::UString::expandedSize): likewise (KJS::UString::expandCapacity): likewise (KJS::UString::expandPreCapacity): likewise (KJS::UString::spliceSubstringsWithSeparators): likewise (KJS::UString::append): likewise (KJS::UString::operator=): likewise (KJS::UString::detach): likewise
• kjs/ustring.h: make UString and UString::Rep KJS_FAST_ALLOCATED.

File:

• trunk/JavaScriptCore/kjs/identifier.cpp (modified) (3 diffs)

trunk/JavaScriptCore/kjs/identifier.cpp

@@ -36 +36 @@
 #include "identifier.h"
 
+#include "fast_malloc.h"
+
 #define DUMP_STATISTICS 0
 
@@ -123 +125 @@
     }
     
-    UChar *d = static_cast<UChar *>(malloc(sizeof(UChar) * length));
+    UChar *d = static_cast<UChar *>(kjs_fast_malloc(sizeof(UChar) * length));
     for (int j = 0; j != length; j++)
         d[j] = c[j];
@@ -162 +164 @@
     }
     
-    UChar *d = static_cast<UChar *>(malloc(sizeof(UChar) * length));
+    UChar *d = static_cast<UChar *>(kjs_fast_malloc(sizeof(UChar) * length));
     for (int j = 0; j != length; j++)
         d[j] = s[j];