[Blink-Worker] WorkerThread fires idleHandler only at the end of processing all tasks.

Source/core/workers/WorkerThread.h

Index: Source/core/workers/WorkerThread.h
diff --git a/Source/core/workers/WorkerThread.h b/Source/core/workers/WorkerThread.h
index 57b8ff8a4c97ff0867c135f8cebbc8e99d773d62..8a2695f0a9fb79236a4b389a7bb1f9fc301254b0 100644
--- a/Source/core/workers/WorkerThread.h
+++ b/Source/core/workers/WorkerThread.h
@@ -35,6 +35,7 @@
 #include "platform/weborigin/SecurityOrigin.h"
 #include "wtf/Forward.h"
 #include "wtf/MessageQueue.h"
+#include "wtf/Noncopyable.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
@@ -59,6 +60,29 @@ namespace blink {
 
 
     class WorkerThread : public RefCounted<WorkerThread> {
+
+        class WorkerThreadTask : public blink::WebThread::Task {

[jochen (gone - plz use gerrit), 2014/10/14 13:46:03]

nit. move down to the provide section.

it's also enough to forward declare the class (just class WorkerThreadTask;)

+            WTF_MAKE_NONCOPYABLE(WorkerThreadTask); WTF_MAKE_FAST_ALLOCATED;
+        public:
+            static PassOwnPtr<WorkerThreadTask> create(WorkerThread&
+                , PassOwnPtr<ExecutionContextTask>, bool);
+
+            virtual ~WorkerThreadTask() { }
+            virtual void run() OVERRIDE;
+
+            void setIsIdleHandlerTask(bool isIdleHandlerTask) { m_isIdleHandlerTask = isIdleHandlerTask; }
+            bool isIdleHandlerTask() const { return m_isIdleHandlerTask; }
+
+        private:
+            WorkerThreadTask(WorkerThread&
+                , PassOwnPtr<ExecutionContextTask>, bool);
+
+            WorkerThread& m_workerThread;
+            OwnPtr<ExecutionContextTask> m_task;
+            bool m_isInstrumented;
+            bool m_isIdleHandlerTask;
+        };
+
     public:
         virtual ~WorkerThread();
 
@@ -99,6 +123,10 @@ namespace blink {
         void setWorkerInspectorController(WorkerInspectorController*);
 
     protected:
+        int decrementAndReturnTaskCount();
+        void queueUpIdleHandlerNow(long long delayMs);
+        int taskCount() { return m_tasksCount; }
+
         WorkerThread(WorkerLoaderProxy&, WorkerReportingProxy&, PassOwnPtrWillBeRawPtr<WorkerThreadStartupData>);
 
         // Factory method for creating a new worker context for the thread.
@@ -139,6 +167,9 @@ namespace blink {
         // Used to signal thread termination.
         OwnPtr<blink::WebWaitableEvent> m_terminationEvent;
 
+        bool m_IdleHandlerTaskPosted;
+        volatile int m_tasksCount;
+
         // FIXME: This has to be last because of crbug.com/401397 - the
         // WorkerThread might get deleted before it had a chance to properly
         // shut down. By deleting the WebThread first, we can guarantee that