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 "SceneryPager.hxx"
23 using namespace flightgear;
27 SceneryPager::SceneryPager()
29 _pagerRequests.reserve(48);
30 _deleteRequests.reserve(16);
33 SceneryPager::SceneryPager(const SceneryPager& rhs) :
38 SceneryPager::~SceneryPager()
42 void SceneryPager::queueRequest(const std::string& fileName, osg::Group* group,
43 float priority, osg::FrameStamp* frameStamp)
45 _pagerRequests.push_back(PagerRequest(fileName, group, priority,
49 void SceneryPager::queueDeleteRequest(osg::ref_ptr<osg::Object>& objptr)
51 _deleteRequests.push_back(objptr);
54 void SceneryPager::signalEndFrame()
57 bool areDeleteRequests = false;
58 bool arePagerRequests = false;
59 if (!_deleteRequests.empty()) {
60 areDeleteRequests = true;
61 OpenThreads::ScopedLock<OpenThreads::Mutex>
62 lock(_childrenToDeleteListMutex);
63 _childrenToDeleteList.insert(_childrenToDeleteList.end(),
64 _deleteRequests.begin(),
65 _deleteRequests.end());
66 _deleteRequests.clear();
68 if (!_pagerRequests.empty()) {
69 arePagerRequests = true;
70 for_each(_pagerRequests.begin(), _pagerRequests.end(),
71 bind2nd(mem_fun_ref(&PagerRequest::doRequest), this));
72 _pagerRequests.clear();
74 if (areDeleteRequests && !arePagerRequests)
75 updateDatabasePagerThreadBlock();
76 DatabasePager::signalEndFrame();