116 lines
3.2 KiB
C++
116 lines
3.2 KiB
C++
// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
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// Copyright (C) 2010 Winch Gate Property Limited
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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 Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (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 Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef NL_CHANGE_TRACKER_CLIENT_H
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#define NL_CHANGE_TRACKER_CLIENT_H
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#include "nel/misc/types_nl.h"
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#include "change_tracker_base.h"
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const uint32 INVALID_TRACKER = ~0;
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/**
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* Change tracker specialized for the client part of the mirror system
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* (accessing shared memory but not creating it).
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*
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* \author Olivier Cado
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* \author Nevrax France
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* \date 2002
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*/
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class CChangeTrackerClient : public CChangeTrackerBase
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{
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public:
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CChangeTrackerClient() : CChangeTrackerBase(), _CurrentNotifiedRow(), _LastNotifiedRow(), _PointingToGroupTracker(false) {}
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/// Access the tracker header and item array (shared memory)
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void access( sint32 shmid );
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/// Release the tracker (unaccess shared memory + release mutex)
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void release();
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/// Instead of accessing an smid, use another tracker's data (set it after operator=())
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void setPointingToGroupTracker() { _PointingToGroupTracker = true; }
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/// Return true if the tracker is not allocating for itself, using the data of another tracker
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bool isPointingToGroupTracker() const { return _PointingToGroupTracker; }
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/// Assignment operator
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CChangeTrackerClient& operator= ( const CChangeTrackerClient& src )
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{
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CChangeTrackerBase::operator=( src );
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_CurrentNotifiedRow = src._CurrentNotifiedRow;
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_LastNotifiedRow = src._LastNotifiedRow;
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return *this;
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}
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/// Serial ids
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void serial( NLMISC::IStream& s )
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{
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CChangeTrackerBase::serial( s );
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s.serial( _PointingToGroupTracker );
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}
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private:
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/// The current row that is being notified
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TDataSetRow _CurrentNotifiedRow;
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/// The last row that has been notified (acknowledged)
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TDataSetRow _LastNotifiedRow;
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/// True if the tracker is not allocating for itself, using the data of another tracker
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bool _PointingToGroupTracker;
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};
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/**
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* Change tracker with property index
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*
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* \author Olivier Cado
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* \author Nevrax France
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* \date 2002
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*/
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class CChangeTrackerClientProp : public CChangeTrackerClient
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{
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public:
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CChangeTrackerClientProp() : CChangeTrackerClient(), _PropIndex( INVALID_PROPERTY_INDEX ) {}
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CChangeTrackerClientProp( TPropertyIndex propIndex ) : CChangeTrackerClient(), _PropIndex( propIndex ) {}
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TPropertyIndex propIndex() const { return _PropIndex; }
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void serial( NLMISC::IStream& s )
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{
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CChangeTrackerClient::serial( s );
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s.serial( _PropIndex );
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}
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private:
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TPropertyIndex _PropIndex;
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};
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#endif // NL_CHANGE_TRACKER_CLIENT_H
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/* End of change_tracker_client.h */
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