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/* ----------------------------------------------------------------------------
* syncqueue.h
*
* Copyright (c) 2017 Yann Herklotz Grave <ymherklotz@gmail.com>
* MIT License, see LICENSE file for more details.
* ----------------------------------------------------------------------------
*/
#ifndef YAGE_UTIL_SYNCQUEUE_H
#define YAGE_UTIL_SYNCQUEUE_H
#include <condition_variable>
#include <mutex>
#include <queue>
namespace yage
{
template <typename T>
class SyncQueue
{
public:
SyncQueue() = default;
SyncQueue(const SyncQueue &) = delete;
SyncQueue &operator=(const SyncQueue &) = delete;
T pop();
void pop(T &item);
void push(const T &item);
void push(T &&item);
private:
std::queue<T> queue_;
std::mutex mutex_;
std::condition_variable cond_;
};
// Template definitions
template <typename T>
T SyncQueue<T>::pop()
{
std::unique_lock<std::mutex> mlock(mutex_);
while (queue_.empty()) {
cond_.wait(mlock);
}
auto item = queue_.front();
queue_.pop();
return item;
}
template <typename T>
void SyncQueue<T>::pop(T &item)
{
std::unique_lock<std::mutex> mlock(mutex_);
while (queue_.empty()) {
cond_.wait(mlock);
}
item = queue_.front();
queue_.pop();
}
template <typename T>
void SyncQueue<T>::push(const T &item)
{
std::unique_lock<std::mutex> mlock(mutex_);
queue_.push(item);
mlock.unlock();
cond_.notify_one();
}
template <typename T>
void SyncQueue<T>::push(T &&item)
{
std::unique_lock<std::mutex> mlock(mutex_);
queue_.push(std::move(item));
mlock.unlock();
cond_.notify_one();
}
} // namespace yage
#endif
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