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priority_mutex.cc
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priority_mutex.cc
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//
// Created by YongGyu Lee on 2021/06/20.
//
#include "priority_mutex.h"
namespace sample {
/** PriorityMutexHigh */
void PriorityMutex::HighMutex::lock() {
return m_.lock_high();
}
void PriorityMutex::HighMutex::unlock() {
return m_.unlock_high();
}
bool PriorityMutex::HighMutex::try_to_lock() {
return m_.try_to_lock_high();
}
/** PriorityMutexLow */
void PriorityMutex::LowMutex::lock() {
m_.lock_low();
}
void PriorityMutex::LowMutex::unlock() {
m_.unlock_low();
}
bool PriorityMutex::LowMutex::try_to_lock() {
return m_.try_to_lock_low();
}
/** PriorityMutex */
void PriorityMutex::lock_low() {
std::unique_lock<mutex_type> lck(m_);
cv_.wait(lck, [this]{
return !high_accessing_;
});
lck.release();
}
void PriorityMutex::unlock_low() {
m_.unlock();
cv_.notify_one();
}
bool PriorityMutex::try_to_lock_low() {
return !high_accessing_ && m_.try_lock();
}
void PriorityMutex::lock_high() {
++high_accessing_;
m_.lock();
--high_accessing_;
}
void PriorityMutex::unlock_high() {
m_.unlock();
cv_.notify_one();
}
bool PriorityMutex::try_to_lock_high() {
++high_accessing_;
if (m_.try_lock()) {
--high_accessing_;
return true;
}
return false;
}
PriorityMutex::HighMutex& PriorityMutex::high() {
return high_;
}
PriorityMutex::LowMutex& PriorityMutex::low() {
return low_;
}
} // namespace sample