1 // SceneryPager.hxx -- Interface to OSG database pager
3 // Copyright (C) 2007 Tim Moore timoore@redhat.com
5 // This program is free software; you can redistribute it and/or
6 // modify it under the terms of the GNU General Public License as
7 // published by the Free Software Foundation; either version 2 of the
8 // License, or (at your option) any later version.
10 // This program is distributed in the hope that it will be useful, but
11 // WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 // General Public License for more details.
15 // You should have received a copy of the GNU General Public License
16 // along with this program; if not, write to the Free Software
17 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19 #include <simgear/scene/model/SGPagedLOD.hxx>
20 #include "SceneryPager.hxx"
25 using namespace flightgear;
27 SceneryPager::SceneryPager()
29 _pagerRequests.reserve(48);
30 _deleteRequests.reserve(16);
31 setExpiryDelay(120.0);
34 SceneryPager::SceneryPager(const SceneryPager& rhs) :
39 SceneryPager::~SceneryPager()
43 void SceneryPager::requestNodeFile(const std::string& fileName, Group* group,
45 const FrameStamp* framestamp
47 , ref_ptr<Referenced>& databaseRequest
51 simgear::SGPagedLOD *sgplod = dynamic_cast<simgear::SGPagedLOD*>(group);
53 DatabasePager::requestNodeFile(fileName, group, priority, framestamp,
57 sgplod->getReaderWriterOptions());
59 DatabasePager::requestNodeFile(fileName, group, priority, framestamp
66 void SceneryPager::queueRequest(const std::string& fileName, Group* group,
67 float priority, FrameStamp* frameStamp,
69 ref_ptr<Referenced>& databaseRequest,
71 osgDB::ReaderWriter::Options* options)
73 _pagerRequests.push_back(PagerRequest(fileName, group, priority,
81 void SceneryPager::queueDeleteRequest(osg::ref_ptr<osg::Object>& objptr)
83 _deleteRequests.push_back(objptr);
86 void SceneryPager::signalEndFrame()
89 bool areDeleteRequests = false;
90 bool arePagerRequests = false;
91 if (!_deleteRequests.empty()) {
92 areDeleteRequests = true;
94 OpenThreads::ScopedLock<OpenThreads::Mutex>
95 lock(_fileRequestQueue->_childrenToDeleteListMutex);
96 ObjectList& deleteList = _fileRequestQueue->_childrenToDeleteList;
98 OpenThreads::ScopedLock<OpenThreads::Mutex>
99 lock(_childrenToDeleteListMutex);
100 ObjectList& deleteList = _childrenToDeleteList;
102 deleteList.insert(deleteList.end(),
103 _deleteRequests.begin(),
104 _deleteRequests.end());
105 _deleteRequests.clear();
107 if (!_pagerRequests.empty()) {
108 arePagerRequests = true;
109 for_each(_pagerRequests.begin(), _pagerRequests.end(),
110 bind2nd(mem_fun_ref(&PagerRequest::doRequest), this));
111 _pagerRequests.clear();
113 if (areDeleteRequests && !arePagerRequests) {
115 _fileRequestQueue->updateBlock();
117 updateDatabasePagerThreadBlock();
120 DatabasePager::signalEndFrame();