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60 lines
1.3 KiB
C++
60 lines
1.3 KiB
C++
// Copyright 2017 The Chromium 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_H_
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#define FLUTTER_FML_MESSAGE_LOOP_H_
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#include "flutter/fml/macros.h"
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#include "flutter/fml/task_runner.h"
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namespace fml {
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class TaskRunner;
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class MessageLoopImpl;
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class MessageLoop {
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public:
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FML_EMBEDDER_ONLY
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static MessageLoop& GetCurrent();
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bool IsValid() const;
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void Run();
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void Terminate();
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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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fml::RefPtr<fml::TaskRunner> GetTaskRunner() const;
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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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void RunExpiredTasksNow();
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static void EnsureInitializedForCurrentThread();
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static bool IsInitializedForCurrentThread();
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~MessageLoop();
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private:
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friend class TaskRunner;
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friend class MessageLoopImpl;
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fml::RefPtr<MessageLoopImpl> loop_;
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fml::RefPtr<fml::TaskRunner> task_runner_;
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MessageLoop();
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fml::RefPtr<MessageLoopImpl> GetLoopImpl() const;
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FML_DISALLOW_COPY_AND_ASSIGN(MessageLoop);
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};
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} // namespace fml
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#endif // FLUTTER_FML_MESSAGE_LOOP_H_
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