| /* |
| * Copyright (C) 2016 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. AND ITS CONTRIBUTORS ``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 ITS 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 "ActiveDOMObject.h" |
| #include "ScriptExecutionContext.h" |
| #include <wtf/Threading.h> |
| |
| namespace WebCore { |
| |
| class IDBActiveDOMObject : public ActiveDOMObject { |
| public: |
| Thread& originThread() const { return m_originThread.get(); } |
| |
| void contextDestroyed() final { |
| ASSERT(canCurrentThreadAccessThreadLocalData(originThread())); |
| |
| Locker<Lock> lock(m_scriptExecutionContextLock); |
| ActiveDOMObject::contextDestroyed(); |
| } |
| |
| template<typename T, typename... Parameters, typename... Arguments> |
| void performCallbackOnOriginThread(T& object, void (T::*method)(Parameters...), Arguments&&... arguments) |
| { |
| ASSERT(&originThread() == &object.originThread()); |
| |
| if (canCurrentThreadAccessThreadLocalData(object.originThread())) { |
| (object.*method)(std::forward<Arguments>(arguments)...); |
| return; |
| } |
| |
| Locker<Lock> lock(m_scriptExecutionContextLock); |
| |
| ScriptExecutionContext* context = scriptExecutionContext(); |
| if (!context) |
| return; |
| |
| context->postCrossThreadTask(object, method, arguments...); |
| } |
| |
| void callFunctionOnOriginThread(Function<void()>&& function) |
| { |
| if (canCurrentThreadAccessThreadLocalData(originThread())) { |
| function(); |
| return; |
| } |
| |
| Locker<Lock> lock(m_scriptExecutionContextLock); |
| |
| ScriptExecutionContext* context = scriptExecutionContext(); |
| if (!context) |
| return; |
| |
| context->postTask(WTFMove(function)); |
| } |
| |
| protected: |
| IDBActiveDOMObject(ScriptExecutionContext* context) |
| : ActiveDOMObject(context) |
| { |
| ASSERT(context); |
| } |
| |
| private: |
| Ref<Thread> m_originThread { Thread::current() }; |
| Lock m_scriptExecutionContextLock; |
| }; |
| |
| } // namespace WebCore |