40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
// Copyright 2018 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <condition_variable>
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#include <functional>
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namespace Common {
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/**
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* A background manager which ensures that all detached task is finished before program exits.
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*
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* Some tasks, telemetry submission for example, prefer executing asynchronously and don't care
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* about the result. These tasks are suitable for std::thread::detach(). However, this is unsafe if
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* the task is launched just before the program exits (which is a common case for telemetry), so we
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* need to block on these tasks on program exit.
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*
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* To make detached task safe, a single DetachedTasks object should be placed in the main(), and
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* call WaitForAllTasks() after all program execution but before global/static variable destruction.
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* Any potentially unsafe detached task should be executed via DetachedTasks::AddTask.
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*/
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class DetachedTasks {
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public:
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DetachedTasks();
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~DetachedTasks();
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void WaitForAllTasks();
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static void AddTask(std::function<void()> task);
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private:
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static DetachedTasks* instance;
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std::condition_variable cv;
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std::mutex mutex;
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int count = 0;
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};
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} // namespace Common
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