100 lines
3.6 KiB
C++
100 lines
3.6 KiB
C++
/*
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* Copyright (C) 2008-2020 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "WorkerRunLoop.h"
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#include <wtf/Forward.h>
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#include <wtf/Function.h>
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#include <wtf/Lock.h>
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#include <wtf/ThreadSafeRefCounted.h>
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#include <wtf/threads/BinarySemaphore.h>
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namespace WTF {
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class Thread;
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}
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namespace WebCore {
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class WorkerDebuggerProxy;
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class WorkerLoaderProxy;
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class WorkerRunLoop;
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class WorkerOrWorkletThread : public ThreadSafeRefCounted<WorkerOrWorkletThread> {
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public:
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virtual ~WorkerOrWorkletThread();
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WTF::Thread* thread() const { return m_thread.get(); }
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virtual WorkerDebuggerProxy* workerDebuggerProxy() const = 0;
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virtual WorkerLoaderProxy& workerLoaderProxy() = 0;
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WorkerOrWorkletGlobalScope* globalScope() const { return m_globalScope.get(); }
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WorkerRunLoop& runLoop() { return m_runLoop; }
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void start(Function<void(const String&)>&& evaluateCallback = { });
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void stop(Function<void()>&& terminatedCallback = { });
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void startRunningDebuggerTasks();
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void stopRunningDebuggerTasks();
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void suspend();
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void resume();
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const String& identifier() const { return m_identifier; }
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static HashSet<WorkerOrWorkletThread*>& workerOrWorkletThreads() WTF_REQUIRES_LOCK(workerOrWorkletThreadsLock());
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static Lock& workerOrWorkletThreadsLock() WTF_RETURNS_LOCK(s_workerOrWorkletThreadsLock);
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static void releaseFastMallocFreeMemoryInAllThreads();
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protected:
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explicit WorkerOrWorkletThread(const String& identifier);
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void workerOrWorkletThread();
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// Executes the event loop for the worker thread. Derived classes can override to perform actions before/after entering the event loop.
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virtual void runEventLoop();
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private:
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virtual Ref<WTF::Thread> createThread() = 0;
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virtual RefPtr<WorkerOrWorkletGlobalScope> createGlobalScope() = 0;
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virtual void evaluateScriptIfNecessary(String&) { }
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virtual bool shouldWaitForWebInspectorOnStartup() const { return false; }
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static Lock s_workerOrWorkletThreadsLock;
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String m_identifier;
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Lock m_threadCreationAndGlobalScopeLock;
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RefPtr<WorkerOrWorkletGlobalScope> m_globalScope;
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RefPtr<WTF::Thread> m_thread;
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WorkerRunLoop m_runLoop;
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Function<void(const String&)> m_evaluateCallback;
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Function<void()> m_stoppedCallback;
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BinarySemaphore m_suspensionSemaphore;
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bool m_isSuspended { false };
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bool m_pausedForDebugger { false };
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};
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} // namespace WebCore
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