Changes to the interval timer:...

webkit/port/bindings/v8/extensions/Interval.cpp

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "Interval.h"
 #include "wtf/CurrentTime.h"
 
 namespace WebCore {
 
 const char* kIntervalExtensionName = "v8/Interval";
 
 class IntervalExtensionWrapper : public v8::Extension {
 public:
     IntervalExtensionWrapper() : 
         v8::Extension(kIntervalExtensionName,
-          "native function HiResTime();"
-          "function Interval() {"
+          "var chromium;"
+          "if (!chromium)"
+          "  chromium = {};"
+          "chromium.Interval = function() {"
           "  var start_ = 0;"
           "  var stop_ = 0;"
+          "  native function HiResTime();"
           "  this.start = function() {"
+          "    stop_ = 0;"
           "    start_ = HiResTime();"
           "  };"
           "  this.stop = function() {"
           "    stop_ = HiResTime();"
           "    if (start_ == 0)"
           "      stop_ = 0;"
           "  };"
           "  this.microseconds = function() {"
-          "    if (stop_ == 0)"
-          "      stop();"
-          "    return Math.ceil((stop_ - start_) * 1000000);"
+          "    var stop = stop_;"
+          "    if (stop == 0 && start_ != 0)"
+          "      stop = HiResTime();"
+          "    return Math.ceil((stop - start_) * 1000000);"
           "  };"
           "}") {};
 
     virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(v8::Handle<v8::String> name) {
         if (name->Equals(v8::String::New("HiResTime")))
             return v8::FunctionTemplate::New(HiResTime);
         return v8::Handle<v8::FunctionTemplate>();
     }
 
     static v8::Handle<v8::Value> HiResTime(const v8::Arguments& args) {
         return v8::Number::New(WTF::currentTime());
     }
 };
 
 v8::Extension*  IntervalExtension::Get() {
     return new IntervalExtensionWrapper();
 }
 
 }