threadsafe_queue.h
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#ifndef __THREADSAFE_QUEUE_H__
#define __THREADSAFE_QUEUE_H__
#include <queue>
#include <mutex>
#include <condition_variable>
#include <initializer_list>
#include <pthread.h>
using std::queue;
using namespace std;
template <typename T>
class ThreadedQueue : public queue<T> {
public:
ThreadedQueue();
~ThreadedQueue();
bool empty() const;
size_t size() const;
void push(const T& val);
void push(T& val);
bool pop();
T& front();
const T& front() const;
T& back();
const T& back() const;
void Put(T &data);
T Take();
void Get(T &data);
bool GetEmpty();
condition_variable *condition;
mutex *lock;
};
template <typename T>
ThreadedQueue<T>::ThreadedQueue() {
lock = new mutex;
condition = new condition_variable;
}
template <typename T>
ThreadedQueue<T>::~ThreadedQueue() {
if(condition != nullptr){
delete condition;
condition = nullptr;
}
if(lock != nullptr){
delete lock;
lock = nullptr;
}
}
template <typename T>
T ThreadedQueue<T>:: Take()
{
std::unique_lock<std::mutex> lk(this->lock);
this->condition->wait(lk, [this]{return !this->empty();});
T val = this->front();
this->pop();
return val;
}
template <typename T>
void ThreadedQueue<T>:: Put(T &data)
{
std::unique_lock<std::mutex> lk(*lock);
this->push(data);
this->condition->notify_one();
return;
}
template <typename T>
void ThreadedQueue<T>:: Get(T &data)
{
std::unique_lock<std::mutex> lk(*lock);
this->condition->wait(lk, [this]{return !this->empty();});
data = this->front();
this->pop();
}
template <typename T>
bool ThreadedQueue<T>::GetEmpty()
{
std::unique_lock<std::mutex> lk(*lock);
this->condition->wait(lk, [this]{return !this->empty();});
return true;
}
template <typename T>
bool ThreadedQueue<T>::empty() const {
bool result = queue<T>::empty();
return result;
}
template <typename T>
size_t ThreadedQueue<T>::size() const {
size_t result = queue<T>::size();
return result;
}
template <typename T>
void ThreadedQueue<T>::push(T& val) {
queue<T>::push(val);
}
template <typename T>
T& ThreadedQueue<T>::front() {
T& result = queue<T>::front();
return result;
}
template <typename T>
bool ThreadedQueue<T>::pop() {
bool result = false;
if(!queue<T>::empty()) {
queue<T>::pop();
result = true;
}
return result;
}
#endif