Sirikata
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00001 /* Sirikata 00002 * MigrationMonitor.hpp 00003 * 00004 * Copyright (c) 2009, Ewen Cheslack-Postava 00005 * All rights reserved. 00006 * 00007 * Redistribution and use in source and binary forms, with or without 00008 * modification, are permitted provided that the following conditions are 00009 * met: 00010 * * Redistributions of source code must retain the above copyright 00011 * notice, this list of conditions and the following disclaimer. 00012 * * Redistributions in binary form must reproduce the above copyright 00013 * notice, this list of conditions and the following disclaimer in 00014 * the documentation and/or other materials provided with the 00015 * distribution. 00016 * * Neither the name of Sirikata nor the names of its contributors may 00017 * be used to endorse or promote products derived from this software 00018 * without specific prior written permission. 00019 * 00020 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 00021 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 00022 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 00023 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 00024 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00025 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 00026 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00027 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00028 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00029 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00030 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00031 */ 00032 00033 #ifndef _SIRIKATA_MIGRATION_MONITOR_HPP_ 00034 #define _SIRIKATA_MIGRATION_MONITOR_HPP_ 00035 00036 #include <sirikata/core/util/Platform.hpp> 00037 #include <sirikata/space/LocationService.hpp> 00038 #include <sirikata/space/CoordinateSegmentation.hpp> 00039 00040 #include <boost/multi_index_container.hpp> 00041 #include <boost/multi_index/member.hpp> 00042 #include <boost/multi_index/ordered_index.hpp> 00043 00044 namespace Sirikata { 00045 00051 class MigrationMonitor : public LocationServiceListener, public CoordinateSegmentation::Listener { 00052 public: 00053 typedef std::tr1::function<void(const UUID&)> MigrationCallback; 00054 00062 MigrationMonitor(SpaceContext* ctx, LocationService* locservice, CoordinateSegmentation* cseg, MigrationCallback cb); 00063 ~MigrationMonitor(); 00064 00065 // Indicates whether the given position is on this server, useful to check if object should be 00066 // permitted to join this server. 00067 bool onThisServer(const Vector3f& pos) const; 00068 00069 private: 00070 00072 virtual void localObjectAdded(const UUID& uuid, bool agg, const TimedMotionVector3f& loc, const TimedMotionQuaternion& orient, const AggregateBoundingInfo& bounds, const String& mesh, const String& physics, const String& zernike); 00073 virtual void localObjectRemoved(const UUID& uuid, bool agg); 00074 virtual void localLocationUpdated(const UUID& uuid, bool agg, const TimedMotionVector3f& newval); 00075 00076 // Handlers for location events we care about. These are handled in our internal strand 00077 void handleLocalObjectAdded(const UUID& uuid, const TimedMotionVector3f& loc, const AggregateBoundingInfo& bounds); 00078 void handleLocalObjectRemoved(const UUID& uuid); 00079 void handleLocalLocationUpdated(const UUID& uuid, const TimedMotionVector3f& newval); 00080 00082 virtual void updatedSegmentation(CoordinateSegmentation* cseg, const std::vector<SegmentationInfo>& new_segmentation); 00083 void handleUpdatedSegmentation(CoordinateSegmentation* cseg, const std::vector<SegmentationInfo>& new_segmentation); 00084 00085 // Given our current information, sets up the next timeout, cancelling any outstanding timeouts. 00086 // This is conservative -- it will only replace the timer if the earliest event time changed 00087 void waitForNextEvent(); 00088 00089 // Service the migration monitor, return a set of objects for which migrations should be started 00090 void service(); 00091 00092 bool inRegion(const Vector3f& pos) const; 00093 00094 Time computeNextEventTime(const UUID& obj, const TimedMotionVector3f& newloc); 00095 00096 SpaceContext* mContext; 00097 LocationService* mLocService; 00098 CoordinateSegmentation* mCSeg; 00099 BoundingBoxList mBoundingRegions; 00100 00101 struct ObjectInfo { 00102 ObjectInfo(UUID id, Time next) 00103 : objid(id), 00104 nextEvent(next) 00105 {} 00106 00107 UUID objid; 00108 Time nextEvent; 00109 }; 00110 00111 00112 // Tags used by ObjectInfoSet 00113 struct objid {}; 00114 struct nextevent {}; 00115 00116 typedef boost::multi_index_container< 00117 ObjectInfo, 00118 boost::multi_index::indexed_by< 00119 boost::multi_index::ordered_unique< boost::multi_index::tag<objid>, BOOST_MULTI_INDEX_MEMBER(ObjectInfo,UUID,objid) >, 00120 boost::multi_index::ordered_non_unique< boost::multi_index::tag<nextevent>, BOOST_MULTI_INDEX_MEMBER(ObjectInfo,Time,nextEvent) > 00121 > 00122 > ObjectInfoSet; 00123 typedef ObjectInfoSet::index<objid>::type ObjectInfoByID; 00124 typedef ObjectInfoSet::index<nextevent>::type ObjectInfoByNextEvent; 00125 00126 static void changeNextEventTime(ObjectInfo& objinfo, const Time& newt); 00127 00128 ObjectInfoSet mObjectInfo; 00129 00130 Network::IOStrand* mStrand; 00131 Network::IOTimerPtr mTimer; 00132 00133 Time mMinEventTime; 00134 00135 MigrationCallback mCB; 00136 }; 00137 00138 } // namespace Sirikata 00139 00140 #endif //_SIRIKATA_MIGRATION_MONITOR_HPP_