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/*
* Copyright (C) 2008-2017 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
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "WorkerGlobalScopeProxy.h"
#include "WorkerDebuggerProxy.h"
#include "WorkerLoaderProxy.h"
#include "WorkerObjectProxy.h"
#include <wtf/MonotonicTime.h>
#include <wtf/ThreadSafeRefCounted.h>
namespace WebCore {
class DedicatedWorkerThread;
class WorkerInspectorProxy;
class WorkerMessagingProxy final : public ThreadSafeRefCounted<WorkerMessagingProxy>, public WorkerGlobalScopeProxy, public WorkerObjectProxy, public WorkerLoaderProxy, public WorkerDebuggerProxy {
WTF_MAKE_FAST_ALLOCATED;
public:
explicit WorkerMessagingProxy(Worker&);
virtual ~WorkerMessagingProxy();
// Implementation of WorkerLoaderProxy.
// This method is used in the main thread to post task back to the worker thread.
bool postTaskForModeToWorkerOrWorkletGlobalScope(ScriptExecutionContext::Task&&, const String& mode) final;
private:
// Implementations of WorkerGlobalScopeProxy.
// (Only use these functions in the worker object thread.)
void startWorkerGlobalScope(const URL& scriptURL, const String& name, const String& userAgent, bool isOnline, const ScriptBuffer& sourceCode, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, const CrossOriginEmbedderPolicy&, MonotonicTime timeOrigin, ReferrerPolicy, WorkerType, FetchRequestCredentials, JSC::RuntimeFlags) final;
void terminateWorkerGlobalScope() final;
void postMessageToWorkerGlobalScope(MessageWithMessagePorts&&) final;
void postTaskToWorkerGlobalScope(Function<void(ScriptExecutionContext&)>&&) final;
bool hasPendingActivity() const final;
void workerObjectDestroyed() final;
void notifyNetworkStateChange(bool isOnline) final;
void suspendForBackForwardCache() final;
void resumeForBackForwardCache() final;
// Implementation of WorkerObjectProxy.
// (Only use these functions in the worker context thread.)
void postMessageToWorkerObject(MessageWithMessagePorts&&) final;
void postTaskToWorkerObject(Function<void(Worker&)>&&) final;
void postExceptionToWorkerObject(const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL) final;
void confirmMessageFromWorkerObject(bool hasPendingActivity) final;
void reportPendingActivity(bool hasPendingActivity) final;
void workerGlobalScopeClosed() final;
void workerGlobalScopeDestroyed() final;
// Implementation of WorkerDebuggerProxy.
// (Only use these functions in the worker context thread.)
void postMessageToDebugger(const String&) final;
void setResourceCachingDisabledByWebInspector(bool) final;
// Implementation of WorkerLoaderProxy.
// These functions are called on different threads to schedule loading
// requests and to send callbacks back to WorkerGlobalScope.
bool isWorkerMessagingProxy() const final { return true; }
void postTaskToLoader(ScriptExecutionContext::Task&&) final;
RefPtr<CacheStorageConnection> createCacheStorageConnection() final;
StorageConnection* storageConnection() final;
RefPtr<RTCDataChannelRemoteHandlerConnection> createRTCDataChannelRemoteHandlerConnection() final;
void workerThreadCreated(DedicatedWorkerThread&);
// Only use this method on the worker object thread.
bool askedToTerminate() const { return m_askedToTerminate; }
void workerGlobalScopeDestroyedInternal();
void reportPendingActivityInternal(bool confirmingMessage, bool hasPendingActivity);
Worker* workerObject() const { return m_workerObject; }
RefPtr<ScriptExecutionContext> m_scriptExecutionContext;
RefPtr<WorkerInspectorProxy> m_inspectorProxy;
Worker* m_workerObject;
bool m_mayBeDestroyed { false };
RefPtr<DedicatedWorkerThread> m_workerThread;
unsigned m_unconfirmedMessageCount { 0 }; // Unconfirmed messages from worker object to worker thread.
bool m_workerThreadHadPendingActivity { false }; // The latest confirmation from worker thread reported that it was still active.
bool m_askedToSuspend { false };
bool m_askedToTerminate { false };
Vector<std::unique_ptr<ScriptExecutionContext::Task>> m_queuedEarlyTasks; // Tasks are queued here until there's a thread object created.
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::WorkerMessagingProxy)
static bool isType(const WebCore::WorkerLoaderProxy& proxy) { return proxy.isWorkerMessagingProxy(); }
SPECIALIZE_TYPE_TRAITS_END()
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