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95 lines
2.5 KiB
C++
95 lines
2.5 KiB
C++
/*
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* Copyright (C) 2009 MaNGOS <http://getmangos.com/>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef LOCKEDQUEUE_H
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#define LOCKEDQUEUE_H
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#include <ace/Guard_T.h>
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#include <ace/Thread_Mutex.h>
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#include <deque>
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#include <assert.h>
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#include "Errors.h"
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namespace ACE_Based
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{
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template <class T, class LockType, typename StorageType=std::deque<T> >
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class LockedQueue
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{
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//! Lock access to the queue.
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LockType _lock;
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//! Storage backing the queue.
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StorageType _queue;
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//! Cancellation flag.
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/*volatile*/ bool _canceled;
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public:
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//! Create a LockedQueue.
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LockedQueue() : _canceled(false) {}
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//! Destroy a LockedQueue.
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virtual ~LockedQueue() { }
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//! Adds an item to the queue.
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void add(const T& item)
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{
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ACE_Guard<LockType> g(this->_lock);
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//ASSERT(!this->_canceled);
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// throw Cancellation_Exception();
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_queue.push_back(item);
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}
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//! Gets the next result in the queue, if any.
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bool next(T& result)
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{
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ACE_Guard<LockType> g(this->_lock);
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if (_queue.empty())
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return false;
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//ASSERT (!_queue.empty() || !this->_canceled);
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// throw Cancellation_Exception();
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result = _queue.front();
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_queue.pop_front();
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return true;
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}
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//! Cancels the queue.
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void cancel()
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{
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ACE_Guard<LockType> g(this->_lock);
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_canceled = true;
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}
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//! Checks if the queue is cancelled.
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bool cancelled()
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{
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ACE_Guard<LockType> g(this->_lock);
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return _canceled;
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}
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};
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}
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#endif
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