43 lines
1.1 KiB
C++
43 lines
1.1 KiB
C++
#pragma once
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#ifndef MESSMER_CPPUTILS_LOCK_CONDITIONBARRIER_H
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#define MESSMER_CPPUTILS_LOCK_CONDITIONBARRIER_H
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#include <mutex>
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#include <condition_variable>
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#include "../macros.h"
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//TODO Test
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//TODO Merge lock folder with thread folder
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namespace cpputils {
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// Like a condition variable, but without spurious wakeups.
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// The waiting threads are only woken, when notify() is called.
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// After a call to release(), future calls to wait() will not block anymore.
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class ConditionBarrier final {
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public:
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ConditionBarrier() :_mutex(), _cv(), _triggered(false) {
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}
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void wait() {
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std::unique_lock<std::mutex> lock(_mutex);
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_cv.wait(lock, [this] {
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return _triggered;
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});
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}
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void release() {
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std::unique_lock<std::mutex> lock(_mutex);
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_triggered = true;
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_cv.notify_all();
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}
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private:
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std::mutex _mutex;
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std::condition_variable _cv;
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bool _triggered;
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DISALLOW_COPY_AND_ASSIGN(ConditionBarrier);
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};
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}
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#endif
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