Oilpan: Introduce GCTaskRunner

third_party/WebKit/Source/web/WebKit.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 30 matching lines @@
 #include "core/fetch/WebCacheMemoryDumpProvider.h"
 #include "core/frame/Settings.h"
 #include "core/page/Page.h"
 #include "core/workers/WorkerGlobalScopeProxy.h"
 #include "gin/public/v8_platform.h"
 #include "modules/InitModules.h"
 #include "platform/LayoutTestSupport.h"
 #include "platform/Logging.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/graphics/ImageDecodingStore.h"
+#include "platform/heap/GCTaskRunner.h"
 #include "platform/heap/Heap.h"
-#include "platform/heap/MessageLoopInterruptor.h"
-#include "platform/heap/PendingGCRunner.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebPrerenderingSupport.h"
 #include "public/platform/WebThread.h"
 #include "web/IndexedDBClientImpl.h"
 #include "wtf/Assertions.h"
 #include "wtf/CryptographicallyRandomNumber.h"
 #include "wtf/MainThread.h"
 #include "wtf/Partitions.h"
 #include "wtf/WTF.h"
 #include "wtf/text/AtomicString.h"
@@ skipping 29 matching lines @@
     {
         m_function(m_context);
     }
 private:
     WTF::MainThreadFunction* m_function;
     void* m_context;
 };
 
 } // namespace
 
-static WebThread::TaskObserver* s_endOfTaskRunner = 0;
-static WebThread::TaskObserver* s_pendingGCRunner = 0;
+static WebThread::TaskObserver* s_endOfTaskRunner = nullptr;
+static GCTaskRunner* s_gcTaskRunner = nullptr;
 
 // Make sure we are not re-initialized in the same address space.
 // Doing so may cause hard to reproduce crashes.
 static bool s_webKitInitialized = false;
 
 void initialize(Platform* platform)
 {
     initializeWithoutV8(platform);
 
     V8Initializer::initializeMainThreadIfNeeded();
@@ skipping 62 matching lines @@
     Platform::initialize(platform);
 
     WTF::setRandomSource(cryptographicallyRandomValues);
     WTF::initialize(currentTimeFunction, monotonicallyIncreasingTimeFunction, systemTraceTimeFunction, histogramEnumerationFunction, adjustAmountOfExternalAllocatedMemory);
     WTF::initializeMainThread(callOnMainThreadFunction);
     Heap::init();
 
     ThreadState::attachMainThread();
     // currentThread() is null if we are running on a thread without a message loop.
     if (WebThread* currentThread = platform->currentThread()) {
-        ASSERT(!s_pendingGCRunner);
-        s_pendingGCRunner = new PendingGCRunner;
-        currentThread->addTaskObserver(s_pendingGCRunner);
-
-        OwnPtr<MessageLoopInterruptor> interruptor = adoptPtr(new MessageLoopInterruptor(currentThread->taskRunner()));
-        ThreadState::current()->addInterruptor(interruptor.release());
+        ASSERT(!s_gcTaskRunner);
+        s_gcTaskRunner = new GCTaskRunner(currentThread);
     }
 
     DEFINE_STATIC_LOCAL(ModulesInitializer, initializer, ());
     initializer.init();
 
     setIndexedDBClientCreateFunction(IndexedDBClientImpl::create);
 }
 
 void shutdown()
 {
     // currentThread() is null if we are running on a thread without a message loop.
     if (Platform::current()->currentThread()) {
         Platform::current()->unregisterMemoryDumpProvider(WebCacheMemoryDumpProvider::instance());
 
         // We don't need to (cannot) remove s_endOfTaskRunner from the current
         // message loop, because the message loop is already destructed before
         // the shutdown() is called.
         delete s_endOfTaskRunner;
-        s_endOfTaskRunner = 0;
+        s_endOfTaskRunner = nullptr;
 
-        ASSERT(s_pendingGCRunner);
-        delete s_pendingGCRunner;
-        s_pendingGCRunner = 0;
+        ASSERT(s_gcTaskRunner);
+        delete s_gcTaskRunner;
+        s_gcTaskRunner = nullptr;
     }
 
     // Shutdown V8-related background threads before V8 is ramped down. Note
     // that this will wait the thread to stop its operations.
     ScriptStreamerThread::shutdown();
 
     v8::Isolate* isolate = V8PerIsolateData::mainThreadIsolate();
     V8PerIsolateData::willBeDestroyed(isolate);
 
     // Make sure we stop WorkerThreads before the main thread's ThreadState
@@ skipping 74 matching lines @@
     ASSERT(!reloadPages);
     Page::refreshPlugins();
 }
 
 void decommitFreeableMemory()
 {
     WTF::Partitions::decommitFreeableMemory();
 }
 
 } // namespace blink