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#pragma once
#ifndef _CONCURRENT_QUEUE_H
#define _CONCURRENT_QUEUE_H
#include <queue>
#include <boost/thread.hpp>
template<typename Data>
class concurrent_queue
{
private:
std::queue<Data> the_queue;
mutable boost::mutex the_mutex;
boost::condition_variable the_condition_variable;
public:
void push(Data const& data)
{
boost::lock_guard<boost::mutex> lock(the_mutex);
the_queue.push(data);
the_condition_variable.notify_one();
}
bool empty() const
{
boost::lock_guard<boost::mutex> lock(the_mutex);
return the_queue.empty();
}
bool try_pop(Data& popped_value)
{
boost::unique_lock<boost::mutex> lock(the_mutex);
if( the_queue.empty() )
{
return false;
}
popped_value = the_queue.front();
the_queue.pop();
return true;
}
void wait_and_pop(Data& popped_value)
{
boost::unique_lock<boost::mutex> lock(the_mutex);
while( the_queue.empty() )
{
the_condition_variable.wait(lock);
}
popped_value = the_queue.front();
the_queue.pop();
}
};
#endif
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