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70 lines
2.5 KiB
C++
70 lines
2.5 KiB
C++
/*
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* Copyright (C) 2007, 2008, 2013 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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*
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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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* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY 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 OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef TaskSynchronizer_h
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#define TaskSynchronizer_h
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#include "platform/PlatformExport.h"
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#include "wtf/Noncopyable.h"
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#include "wtf/Threading.h"
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#include "wtf/ThreadingPrimitives.h"
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namespace blink {
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// TaskSynchronizer can be used to wait for task completion.
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class PLATFORM_EXPORT TaskSynchronizer {
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WTF_MAKE_NONCOPYABLE(TaskSynchronizer);
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public:
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TaskSynchronizer();
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// Called from a thread that waits for the task completion.
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void waitForTaskCompletion();
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// Called from a thread that executes the task.
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void taskCompleted();
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#if ENABLE(ASSERT)
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bool hasCheckedForTermination() const { return m_hasCheckedForTermination; }
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void setHasCheckedForTermination() { m_hasCheckedForTermination = true; }
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#endif
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private:
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void waitForTaskCompletionInternal();
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bool m_taskCompleted;
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Mutex m_synchronousMutex;
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ThreadCondition m_synchronousCondition;
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#if ENABLE(ASSERT)
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bool m_hasCheckedForTermination;
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#endif
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};
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} // namespace blink
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#endif // TaskSynchronizer_h
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