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https://github.com/encounter/engine.git
synced 2026-03-30 11:09:55 -07:00
Kaushik Iska
fe7e444d6f
* Refactor to move Task Queue to its own class - This is to help with sharing task queue among multiple message loops going forward. - currently there is 1:1 mapping between task queue and message loop, we are still maintaining the semantics for this change. * Add mutex include * Add unit tests for task queue * fix formatting * license
76 lines
1.8 KiB
C++
76 lines
1.8 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef FLUTTER_FML_MESSAGE_LOOP_IMPL_H_
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#define FLUTTER_FML_MESSAGE_LOOP_IMPL_H_
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#include <atomic>
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#include <deque>
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#include <map>
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#include <mutex>
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#include <queue>
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#include <utility>
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#include "flutter/fml/closure.h"
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#include "flutter/fml/delayed_task.h"
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#include "flutter/fml/macros.h"
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#include "flutter/fml/memory/ref_counted.h"
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#include "flutter/fml/message_loop.h"
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#include "flutter/fml/message_loop_task_queue.h"
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#include "flutter/fml/synchronization/thread_annotations.h"
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#include "flutter/fml/time/time_point.h"
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namespace fml {
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class MessageLoopImpl : public fml::RefCountedThreadSafe<MessageLoopImpl> {
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public:
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static fml::RefPtr<MessageLoopImpl> Create();
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virtual ~MessageLoopImpl();
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virtual void Run() = 0;
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virtual void Terminate() = 0;
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virtual void WakeUp(fml::TimePoint time_point) = 0;
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void PostTask(fml::closure task, fml::TimePoint target_time);
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void AddTaskObserver(intptr_t key, fml::closure callback);
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void RemoveTaskObserver(intptr_t key);
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void DoRun();
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void DoTerminate();
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void SwapTaskQueues(const fml::RefPtr<MessageLoopImpl>& other);
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protected:
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// Exposed for the embedder shell which allows clients to poll for events
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// instead of dedicating a thread to the message loop.
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friend class MessageLoop;
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void RunExpiredTasksNow();
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void RunSingleExpiredTaskNow();
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protected:
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MessageLoopImpl();
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private:
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std::mutex tasks_flushing_mutex_;
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std::unique_ptr<MessageLoopTaskQueue> task_queue_;
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std::atomic_bool terminated_;
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void FlushTasks(FlushType type);
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FML_DISALLOW_COPY_AND_ASSIGN(MessageLoopImpl);
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};
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} // namespace fml
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#endif // FLUTTER_FML_MESSAGE_LOOP_IMPL_H_
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