| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| #ifndef WorkQueue_h |
| #define WorkQueue_h |
| |
| #include <functional> |
| #include <wtf/Forward.h> |
| #include <wtf/FunctionDispatcher.h> |
| #include <wtf/RefCounted.h> |
| #include <wtf/Seconds.h> |
| #include <wtf/Threading.h> |
| |
| #if USE(COCOA_EVENT_LOOP) |
| #include <dispatch/dispatch.h> |
| #endif |
| |
| #if USE(WINDOWS_EVENT_LOOP) |
| #include <wtf/Vector.h> |
| #endif |
| |
| #if USE(GLIB_EVENT_LOOP) || USE(GENERIC_EVENT_LOOP) |
| #include <wtf/Condition.h> |
| #include <wtf/RunLoop.h> |
| #endif |
| |
| namespace WTF { |
| |
| class WorkQueue final : public FunctionDispatcher { |
| public: |
| enum class Type { |
| Serial, |
| Concurrent |
| }; |
| enum class QOS { |
| UserInteractive, |
| UserInitiated, |
| Default, |
| Utility, |
| Background |
| }; |
| |
| WTF_EXPORT_PRIVATE static Ref<WorkQueue> create(const char* name, Type = Type::Serial, QOS = QOS::Default); |
| virtual ~WorkQueue(); |
| |
| WTF_EXPORT_PRIVATE void dispatch(Function<void()>&&) override; |
| WTF_EXPORT_PRIVATE void dispatchAfter(Seconds, Function<void()>&&); |
| |
| WTF_EXPORT_PRIVATE static void concurrentApply(size_t iterations, const std::function<void(size_t index)>&); |
| |
| #if USE(COCOA_EVENT_LOOP) |
| dispatch_queue_t dispatchQueue() const { return m_dispatchQueue; } |
| #elif USE(GLIB_EVENT_LOOP) || USE(GENERIC_EVENT_LOOP) |
| RunLoop& runLoop() const { return *m_runLoop; } |
| #endif |
| |
| private: |
| explicit WorkQueue(const char* name, Type, QOS); |
| |
| void platformInitialize(const char* name, Type, QOS); |
| void platformInvalidate(); |
| |
| #if USE(WINDOWS_EVENT_LOOP) |
| static void CALLBACK timerCallback(void* context, BOOLEAN timerOrWaitFired); |
| static DWORD WINAPI workThreadCallback(void* context); |
| |
| bool tryRegisterAsWorkThread(); |
| void unregisterAsWorkThread(); |
| void performWorkOnRegisteredWorkThread(); |
| #endif |
| |
| #if USE(COCOA_EVENT_LOOP) |
| static void executeFunction(void*); |
| dispatch_queue_t m_dispatchQueue; |
| #elif USE(WINDOWS_EVENT_LOOP) |
| volatile LONG m_isWorkThreadRegistered; |
| |
| Mutex m_functionQueueLock; |
| Vector<Function<void()>> m_functionQueue; |
| |
| HANDLE m_timerQueue; |
| #elif USE(GLIB_EVENT_LOOP) || USE(GENERIC_EVENT_LOOP) |
| ThreadIdentifier m_workQueueThread; |
| Lock m_initializeRunLoopConditionMutex; |
| Condition m_initializeRunLoopCondition; |
| RunLoop* m_runLoop; |
| #endif |
| }; |
| |
| } |
| |
| using WTF::WorkQueue; |
| |
| #endif |