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Added clear(), setDatabasePagerThreadPause() and setAcceptNewDatabaseRequests() methods

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and new local implementation of cancel().
This commit is contained in:
Robert Osfield
2004-09-19 20:09:54 +00:00
parent de7b7c0869
commit 0750a19aa6
2 changed files with 171 additions and 159 deletions
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28
include/osgDB/DatabasePager
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@@ -92,9 +92,27 @@ class OSGDB_EXPORT DatabasePager : public osg::NodeVisitor::DatabaseRequestHandl
/** Add a request to load a node file to end the the database request list.*/
virtual void requestNodeFile(const std::string& fileName,osg::Group* group, float priority, const osg::FrameStamp* framestamp);
/** run does the database paging.*/
/** Run does the database paging.*/
virtual void run();
/** Cancel the database pager thread.*/
virtual int cancel();
/** Clear all internally cached structures.*/
void clear();
/** Set whether the database pager thread should be paused or not.*/
void setDatabasePagerThreadPause(bool pause);
/** Get whether the database pager thread should is paused or not.*/
bool getDatabasePagerThreadPause() const { return _databasePagerThreadPaused; }
/** Set whether new database request calls are accepted or ignored.*/
void setAcceptNewDatabaseRequests(bool acceptNewRequests) { _acceptNewRequests = acceptNewRequests; }
/** Get whether new database request calls are accepted or ignored.*/
bool getAcceptNewDatabaseRequests() const { return _acceptNewRequests; }
/** Set the use of the frame block which, if enabled, blocks the DatabasePager
* from executing which the current frame is being drawn.
* When a single processor machine is being used it can be useful to block on
@@ -236,10 +254,14 @@ class OSGDB_EXPORT DatabasePager : public osg::NodeVisitor::DatabaseRequestHandl
inline void updateDatabasePagerThreadBlock()
{
_databasePagerThreadBlock->set(
!_fileRequestList.empty() || !_childrenToDeleteList.empty());
(!_fileRequestList.empty() || !_childrenToDeleteList.empty()) && !_databasePagerThreadPaused);
}
bool _done;
bool _acceptNewRequests;
bool _databasePagerThreadPaused;
bool _useFrameBlock;
osg::ref_ptr<Block> _frameBlock;
int _frameNumber;