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// queue.h
#pragma once
#include "../stdafx.h"
#include "../util/goodies.h"
#include <queue>
namespace mongo {
/**
* simple blocking queue
*/
template<typename T> class BlockingQueue : boost::noncopyable {
public:
void push(T const& t){
boostlock l( _lock );
_queue.push( t );
_condition.notify_one();
}
bool empty() const {
boostlock l( _lock );
return _queue.empty();
}
bool tryPop( T & t ){
boostlock l( _lock );
if ( _queue.empty() )
return false;
t = _queue.front();
_queue.pop();
return true;
}
T blockingPop(){
boostlock l( _lock );
while( _queue.empty() )
_condition.wait( l );
T t = _queue.front();
_queue.pop();
return t;
}
private:
std::queue<T> _queue;
mutable boost::mutex _lock;
boost::condition _condition;
};
}
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