Changeset 50705 in webkit for trunk/JavaScriptCore/runtime/JSGlobalData.cpp

Timestamp:

Nov 9, 2009, 7:14:26 PM (16 years ago)

Author:

[email protected]

Message:

Added a tiny cache for Date parsing.

Reviewed by Sam "Home Wrecker" Weinig.

SunSpider says 1.2% faster.

• runtime/DateConversion.cpp:

(JSC::parseDate): Try to reuse the last parsed Date, if present.

• runtime/JSGlobalData.cpp:

(JSC::JSGlobalData::resetDateCache):

• runtime/JSGlobalData.h: Added storage for last parsed Date. Refactored

this code to make resetting the date cache easier.

• runtime/JSGlobalObject.h:

(JSC::DynamicGlobalObjectScope::DynamicGlobalObjectScope): Updated for
refactoring.

• wtf/DateMath.cpp:

(JSC::parseDateFromNullTerminatedCharacters):

• wtf/DateMath.h: Changed ExecState to be first parameter, as is the JSC custom.

File:

• trunk/JavaScriptCore/runtime/JSGlobalData.cpp (modified) (1 diff)

trunk/JavaScriptCore/runtime/JSGlobalData.cpp

@@ -253 +253 @@
 }
 
+void JSGlobalData::resetDateCache()
+{
+    cachedUTCOffset = NaN;
+    cachedDateString = UString();
+}
+
 void JSGlobalData::startSampling()
 {