Changeset 50789 in webkit for trunk/JavaScriptCore/runtime/JSGlobalData.h

Timestamp:

Nov 10, 2009, 11:22:30 PM (16 years ago)

Author:

[email protected]

Message:

Faster Math.random, based on GameRand.

Reviewed by Gavin "avGni arBalroguch" Barraclough.

SunSpider says 1.4% faster.

• GNUmakefile.am:
• JavaScriptCore.gypi:
• JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
• JavaScriptCore.xcodeproj/project.pbxproj: Added the header to the project.

• runtime/JSGlobalData.cpp:

(JSC::JSGlobalData::JSGlobalData):

• runtime/JSGlobalData.h: Use an object to track random number generation

state, initialized to the current time.

• runtime/MathObject.cpp:

(JSC::MathObject::MathObject):
(JSC::mathProtoFuncRandom): Use the new hotness.

• runtime/WeakRandom.h: Added.

(JSC::WeakRandom::WeakRandom):
(JSC::WeakRandom::get):
(JSC::WeakRandom::advance): The new hotness.

File:

• trunk/JavaScriptCore/runtime/JSGlobalData.h (modified) (2 diffs)

trunk/JavaScriptCore/runtime/JSGlobalData.h

@@ -39 +39 @@
 #include "SmallStrings.h"
 #include "TimeoutChecker.h"
+#include "WeakRandom.h"
 #include <wtf/Forward.h>
 #include <wtf/HashMap.h>
@@ -179 +180 @@
         UString cachedDateString;
         double cachedDateStringValue;
+        
+        WeakRandom weakRandom;
 
 #ifndef NDEBUG