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cc23cf4653
* Add #include <stdio.h> to some fiels where related functions call. * Avoid template dependent lookup for fields in class LockedQueue.
129 lines
3.3 KiB
C++
129 lines
3.3 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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//! Serialize 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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/**
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* @see Queue::add(const T& item)
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*/
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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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this->_queue.push_back(item);
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}
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/**
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* @see Queue::next()
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*/
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T next()
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{
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ACE_Guard<LockType> g(this->_lock);
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ASSERT (!_queue.empty() || !this->_canceled);
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// throw Cancellation_Exception();
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T item = this->_queue.front();
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this->_queue.pop_front();
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return item;
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}
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T front()
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{
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ACE_Guard<LockType> g(this->_lock);
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ASSERT (!this->_queue.empty());
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// throw NoSuchElement_Exception();
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return this->_queue.front();
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}
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/**
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* @see Queue::cancel()
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*/
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void cancel()
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{
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ACE_Guard<LockType> g(this->_lock);
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this->_canceled = true;
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}
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/**
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* @see Queue::isCanceled()
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*/
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bool isCanceled()
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{
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// Faster check since the queue will not become un-canceled
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if(this->_canceled)
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return true;
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ACE_Guard<LockType> g(this->_lock);
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return this->_canceled;
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}
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/**
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* @see Queue::size()
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*/
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size_t size()
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{
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ACE_Guard<LockType> g(this->_lock);
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return this->_queue.size();
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}
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bool empty()
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{
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ACE_Guard<LockType> g(this->_lock);
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return this->_queue.empty();
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}
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};
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}
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#endif
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