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#ifndef __UTIL_LOCKED_QUEUE_H
#define __UTIL_LOCKED_QUEUE_H
namespace Util
{
namespace Locked
{
template <typename _T, bool locked = false, typename _S = int>
class Queue
{
public:
Queue() : head(NULL), tail(NULL), lock() {};
~Queue() {};
_T* remove();
void insert(_T*);
private:
_T* head;
_T* tail;
_S lock;
};
template <typename _T, bool locked, typename _S>
_T* Queue<_T,locked,_S>::remove()
{
_T* item = NULL;
if (locked)
lock.lock();
if (tail != NULL)
{
item = tail;
if (head == tail)
head = tail = NULL;
else
tail = item->prev;
}
if (locked)
lock.unlock();
return item;
}
template <typename _T, bool locked, typename _S>
void Queue<_T,locked,_S>::insert(_T* item)
{
if (locked)
lock.lock();
if (head == NULL)
{
item->next = item->prev = NULL;
head = tail = item;
}
else
{
item->prev = NULL;
item->next = head;
head = head->prev = item;
}
if (locked)
lock.unlock();
}
};
};
#endif
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