[WIP]Implement Blink side changes for navigator.language(s) support for workers.

Source/core/workers/WorkerThread.cpp

 /*
  * Copyright (C) 2008 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 16 matching lines @@
 #include "config.h"
 
 #include "core/workers/WorkerThread.h"
 
 #include "bindings/core/v8/ScriptSourceCode.h"
 #include "core/dom/Microtask.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/inspector/WorkerInspectorController.h"
 #include "core/workers/DedicatedWorkerGlobalScope.h"
 #include "core/workers/WorkerClients.h"
+#include "core/workers/WorkerGlobalScope.h"
+#include "core/workers/WorkerLanguageTasks.h"
 #include "core/workers/WorkerReportingProxy.h"
 #include "core/workers/WorkerThreadStartupData.h"
 #include "platform/PlatformThreadData.h"
 #include "platform/Task.h"
 #include "platform/ThreadTimers.h"
 #include "platform/heap/ThreadState.h"
 #include "platform/weborigin/KURL.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebThread.h"
 #include "public/platform/WebWaitableEvent.h"
@@ skipping 171 matching lines @@
     MutexLocker lock(threadSetMutex());
     ASSERT(workerThreads().contains(this));
     workerThreads().remove(this);
 }
 
 void WorkerThread::start()
 {
     if (m_thread)
         return;
 
-    m_thread = WebThreadSupportingGC::create("WebCore: Worker");
+    m_thread = adoptPtr(blink::Platform::current()->createThread("WebCore: Worker"));
     m_thread->postTask(new Task(WTF::bind(&WorkerThread::initialize, this)));
 }
 
 void WorkerThread::interruptAndDispatchInspectorCommands()
 {
     MutexLocker locker(m_workerInspectorControllerMutex);
     if (m_workerInspectorController)
         m_workerInspectorController->interruptAndDispatchInspectorCommands();
 }
 
 PlatformThreadId WorkerThread::platformThreadId() const
 {
     if (!m_thread)
         return 0;
-    return m_thread->platformThread().threadId();
+    return m_thread->threadId();
 }
 
 void WorkerThread::initialize()
 {
     KURL scriptURL = m_startupData->m_scriptURL;
     String sourceCode = m_startupData->m_sourceCode;
     WorkerThreadStartMode startMode = m_startupData->m_startMode;
 
     {
         MutexLocker lock(m_threadCreationMutex);
 
         // The worker was terminated before the thread had a chance to run.
         if (m_terminated) {
             // Notify the proxy that the WorkerGlobalScope has been disposed of.
             // This can free this thread object, hence it must not be touched afterwards.
             m_workerReportingProxy.workerThreadTerminated();
             return;
         }
 
         m_microtaskRunner = adoptPtr(new MicrotaskRunner);
         m_thread->addTaskObserver(m_microtaskRunner.get());
-        m_thread->attachGC();
+        m_pendingGCRunner = adoptPtr(new PendingGCRunner);
+        m_messageLoopInterruptor = adoptPtr(new MessageLoopInterruptor(m_thread.get()));
+        m_thread->addTaskObserver(m_pendingGCRunner.get());
+        ThreadState::attach();
+        ThreadState::current()->addInterruptor(m_messageLoopInterruptor.get());
         m_workerGlobalScope = createWorkerGlobalScope(m_startupData.release());
 
         m_sharedTimer = adoptPtr(new WorkerSharedTimer(this));
         PlatformThreadData::current().threadTimers().setSharedTimer(m_sharedTimer.get());
     }
 
     // The corresponding call to didStopWorkerRunLoop is in
     // ~WorkerScriptController.
     blink::Platform::current()->didStartWorkerRunLoop(blink::WebWorkerRunLoop(this));
 
@@ skipping 19 matching lines @@
 
     // The below assignment will destroy the context, which will in turn notify messaging proxy.
     // We cannot let any objects survive past thread exit, because no other thread will run GC or otherwise destroy them.
     // If Oilpan is enabled, we detach of the context/global scope, with the final heap cleanup below sweeping it out.
 #if !ENABLE(OILPAN)
     ASSERT(m_workerGlobalScope->hasOneRef());
 #endif
     m_workerGlobalScope->dispose();
     m_workerGlobalScope = nullptr;
 
-    m_thread->detachGC();
+    ThreadState::current()->removeInterruptor(m_messageLoopInterruptor.get());
+
+    // Detach the ThreadState, cleaning out the thread's heap by
+    // performing a final GC. The cleanup operation will at the end
+    // assert that the heap is empty. If the heap does not become
+    // empty, there are still pointers into the heap and those
+    // pointers will be dangling after thread termination because we
+    // are destroying the heap. It is important to detach while the
+    // thread is still valid. In particular, finalizers for objects in
+    // the heap for this thread will need to access thread local data.
+    ThreadState::detach();
 
     m_thread->removeTaskObserver(m_microtaskRunner.get());
     m_microtaskRunner = nullptr;
+    m_thread->removeTaskObserver(m_pendingGCRunner.get());
+    m_pendingGCRunner = nullptr;
+    m_messageLoopInterruptor = nullptr;
 
     // Notify the proxy that the WorkerGlobalScope has been disposed of.
     // This can free this thread object, hence it must not be touched afterwards.
     workerReportingProxy().workerThreadTerminated();
 
     m_terminationEvent->signal();
 
     // Clean up PlatformThreadData before WTF::WTFThreadData goes away!
     PlatformThreadData::current().destroy();
 }
@@ skipping 159 matching lines @@
 {
     InspectorInstrumentation::didLeaveNestedRunLoop(m_workerGlobalScope.get());
 }
 
 void WorkerThread::setWorkerInspectorController(WorkerInspectorController* workerInspectorController)
 {
     MutexLocker locker(m_workerInspectorControllerMutex);
     m_workerInspectorController = workerInspectorController;
 }
 
+void WorkerThread::postTaskLanguageChanged()
+{
+    postTask(WorkerThreadAcceptLanguagesChangedTask::create());
+}
+
+void WorkerThread::notifyAcceptLanguagesChanged(const Vector<String>& newLanguagesList)
+{
+    MutexLocker lock(threadSetMutex());
+    HashSet<WorkerThread*> threads = workerThreads();
+
+    for (HashSet<WorkerThread*>::iterator itr = threads.begin(); itr != threads.end(); ++itr) {
+        // Set the new languages list
+        (*itr)->postTask(WorkerThreadSetUserPreferredLanguagesTask::create(newLanguagesList));
+        // Mark the langs have changed and queue up an event
+        (*itr)->postTask(WorkerThreadAcceptLanguagesChangedTask::create());
+    }
+}
+
+// void WorkerThread::notifyAcceptLanguagesChanged(const String& newLanguagesList)
+// {
+//     MutexLocker lock(threadSetMutex());
+//     HashSet<WorkerThread*> threads = workerThreads();
+//     Vector<String> languages;
+//     String acceptLanguages = m_frame->host()->chrome().client().acceptLanguages();
+//     acceptLanguages.split(',', languages);
+
+//     for (HashSet<WorkerThread*>::iterator itr = threads.begin(); itr != threads.end(); ++itr) {
+//         // Set the new languages list
+//         (*itr)->postTask(WorkerThreadSetUserPreferredLanguagesTask::create(languages));
+//         // Mark the langs have changed and queue up an event
+//         (*itr)->postTask(WorkerThreadAcceptLanguagesChangedTask::create());
+//     }
+// }
+
 } // namespace blink