109 lines
2.5 KiB
C++
109 lines
2.5 KiB
C++
#ifndef UTIL_TIMER_H
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#define UTIL_TIMER_H
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#include <atomic>
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#include <condition_variable>
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#include <functional>
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#include <mutex>
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#include <thread>
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#include "Helpers.h"
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namespace PresenceDetection {
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namespace Util {
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class Timer
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{
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public:
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Timer();
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~Timer();
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Timer(const Timer&) = delete;
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Timer& operator= (const Timer&) = delete;
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Timer(Timer&& other);
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Timer& operator= (Timer&& other);
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bool operator==(const Timer& other) const;
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bool operator==(const std::string& identifier) const;
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bool operator==(bool running) const;
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public:
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std::string Identifier() const;
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template <typename ...FunctionArguments, typename ...Arguments>
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void StartSingle(int milliSeconds, std::function<void(FunctionArguments...)> const & function, Arguments && ...arguments)
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{
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Start(TimerType::Single, milliSeconds, function, std::forward<Arguments>(arguments)...);
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}
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template <typename ...FunctionArguments, typename ...Arguments>
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void StartContinuous(int milliSeconds, std::function<void(FunctionArguments...)> const & function, Arguments && ...arguments)
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{
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Start(TimerType::Continuous, milliSeconds, function, std::forward<Arguments>(arguments)...);
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}
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void Stop();
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void Abort();
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bool IsRunning() const noexcept;
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void Wait();
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private:
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class TimerType
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{
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public:
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enum type
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{
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Unknown,
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Single,
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Continuous
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};
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};
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private:
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template <typename ...FunctionArguments, typename ...Arguments>
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void Start(TimerType::type type, int milliSeconds, std::function<void(FunctionArguments...)> const & function, Arguments && ...arguments)
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{
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if (type == TimerType::Unknown)
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return;
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if (m_run.load(std::memory_order_acquire))
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Stop();
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m_thread = std::thread([this, type, milliSeconds, function, &arguments...]()
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{
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auto argumentsCopy = std::make_tuple(std::forward<Arguments>(arguments)...);
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m_run.store(true, std::memory_order_release);
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m_aborted = false;
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while (m_run.load(std::memory_order_acquire))
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{
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std::unique_lock<std::mutex> lock(m_mutex);
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if (!m_conditionVariable.wait_for(lock, std::chrono::milliseconds(milliSeconds), [&]{return m_aborted;}))
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{
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Helpers::execute(function, argumentsCopy);
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if (type == TimerType::Single)
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m_run.store(false, std::memory_order_release);
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}
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}
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});
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while (!IsRunning())
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{
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}
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}
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private:
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std::atomic<bool> m_run;
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bool m_aborted;
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std::mutex m_mutex;
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std::condition_variable m_conditionVariable;
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std::string m_identifier;
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std::thread m_thread;
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};
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} // namespace Util
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} // namespace PresenceDetection
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#endif // UTIL_TIMER_H
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