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91 lines
1.9 KiB
C++
91 lines
1.9 KiB
C++
#pragma once
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#include <thread>
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#include <atomic>
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#include <memory>
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#include <queue>
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#include <mutex>
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#include <functional>
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#include <stdexcept>
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#include <iostream>
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#include "DllDefines.h"
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/*
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* @link : https://www.cppstories.com/2019/12/threading-loopers-cpp17/
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*/
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using Runnable = std::function<void()>;
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class UTILITYDLL CRunnerTask
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{
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// dispatch class
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public:
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using Runnable = std::function<void()>;
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class CDispatcher
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{
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friend class CRunnerTask; // Allow the looper to access the private constructor.
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public:
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// Yet to be defined method, which will post the runnable
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// into the looper-queue.
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bool post(CRunnerTask::Runnable&& aRunnable)
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{
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return mAssignedRunner.post(std::move(aRunnable));
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}
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private: // construction, since we want the looper to expose it's dispatcher exclusively!
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CDispatcher(CRunnerTask& aLooper)
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: mAssignedRunner(aLooper)
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{}
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private:
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// Store a reference to the attached looper in order to
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// emplace tasks into the queue.
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CRunnerTask& mAssignedRunner;
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};
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// ctor
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CRunnerTask();
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// Copy denied, Move to be implemented
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~CRunnerTask();
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// To be called, once the runner should start looping.
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bool run();
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void stop();
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bool running() const;
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Runnable next();
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std::shared_ptr<CDispatcher> getDispatcher()
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{
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return mDispatcher;
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}
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private:
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// Conditionally-infinite loop doing sth. iteratively
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void runFunc();
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// Shared implementation of exiting the loop-function and joining
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// to the main thread.
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void abortAndJoin();
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bool post(Runnable&& aRunnable);
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// attributes
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std::thread mThread;
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std::atomic_bool mRunning;
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std::atomic_bool mAbortRequested;
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//
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std::recursive_mutex mRunnablesMutex;
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std::queue<Runnable> mRunnables;
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std::shared_ptr<CDispatcher> mDispatcher;
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};
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