85cc8cb9
 Hu Chunming
ๅ็ไปฃ็
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/*
* @Author: yangzilong
* @Date: 2021-11-30 11:09:25
* @Last Modified by: yangzilong
* @Last Modified time: Do not edit
* @Email: yangzilong@objecteye.com
* @Description:
*/
#pragma once
#include <mutex>
#include <queue>
#include <memory>
#include <condition_variable>
namespace helpers
{
namespace buffer
{
template<typename T>
class basic_thread_safe_queue
{
/**
* @brief thread safe data buffer.
* */
public:
/* remove copy construct and copy assignment. */
basic_thread_safe_queue(const basic_thread_safe_queue&) = delete;
basic_thread_safe_queue& operator=(const basic_thread_safe_queue&) = delete;
basic_thread_safe_queue()
{}
~basic_thread_safe_queue()
{}
bool push(const T &data)
{
std::lock_guard<std::mutex> lk(mutex_);
data_queue_.push(data);
}
bool push(T &&data)
{
std::lock_guard<std::mutex> lk(mutex_);
data_queue_.push(std::move(data));
cv_.notify_one();
}
bool try_pop(T &data)
{
std::lock_guard<std::mutex> lk(mutex_);
if (data_queue_.empty())
return false;
data = std::move(data_queue_.front());
data_queue_.pop();
return true;
}
bool wait_and_pop(T &data)
{
std::unique_lock<std::mutex> lk(mutex_);
cv_.wait(lk, [this] {return !data_queue_.empty()});
data = data_queue_.front();
data_queue_.pop();
}
std::shared_ptr<T> get()
{
std::lock_guard<std::mutex> lk(mutex_);
if (data_queue_.empty())
return std::shared_ptr<T>();
std::shared_ptr<T> res(std::make_shared<T>(data_queue_.front()));
data_queue_.pop();
return res;
}
int size() const
{
std::lock_guard<std::mutex> lk(mutex_);
return data_queue_.size();
}
int empty() const
{
return data_queue_.size() == 0;
}
private:
mutable std::mutex mutex_;
std::queue<T> data_queue_;
std::condition_variable cv_;
};
} // namespace buffer
} // namespace helpers
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