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Changed loadLibrary so that it retusn a LoadStatus variable to enable calling

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codes to differentiate between whether a library is already loaded, or is newly loaded
This commit is contained in:
Robert Osfield 2008-09-26 13:51:18 +00:00
parent 026314bf83
commit 0fdb54d8bb
2 changed files with 32 additions and 25 deletions
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9
include/osgDB/Registry
View File

@ -108,8 +108,15 @@ class OSGDB_EXPORT Registry : public osg::Referenced
/** create the platform specific library name associated with nodekit library name.*/
std::string createLibraryNameForNodeKit(const std::string& name);
enum LoadStatus {
NOT_LOADED = 0,
PREVIOUSLY_LOADED,
LOADED
};
/** find the library in the OSG_LIBRARY_PATH and load it.*/
bool loadLibrary(const std::string& fileName);
LoadStatus loadLibrary(const std::string& fileName);
/** close the attached library with specified name.*/
bool closeLibrary(const std::string& fileName);

48
src/osgDB/Registry.cpp
View File

@ -692,12 +692,12 @@ std::string Registry::createLibraryNameForNodeKit(const std::string& name)
#endif
}
bool Registry::loadLibrary(const std::string& fileName)
Registry::LoadStatus Registry::loadLibrary(const std::string& fileName)
{
OpenThreads::ScopedLock<OpenThreads::ReentrantMutex> lock(_pluginMutex);
DynamicLibraryList::iterator ditr = getLibraryItr(fileName);
if (ditr!=_dlList.end()) return true;
if (ditr!=_dlList.end()) return PREVIOUSLY_LOADED;
_openingLibrary=true;
@ -707,9 +707,9 @@ bool Registry::loadLibrary(const std::string& fileName)
if (dl)
{
_dlList.push_back(dl);
return true;
return LOADED;
}
return false;
return NOT_LOADED;
}
@ -769,7 +769,7 @@ ReaderWriter* Registry::getReaderWriterForExtension(const std::string& ext)
// now look for a plug-in to load the file.
std::string libraryName = createLibraryNameForExtension(ext);
notify(INFO) << "Now checking for plug-in "<<libraryName<< std::endl;
if (loadLibrary(libraryName))
if (loadLibrary(libraryName)==LOADED)
{
for(ReaderWriterList::iterator itr=_rwList.begin();
itr!=_rwList.end();
@ -837,11 +837,11 @@ osg::Object* Registry::readObjectOfType(const basic_type_wrapper &btw,Input& fr)
// first try the standard nodekit library.
std::string nodeKitLibraryName = createLibraryNameForNodeKit(libraryName);
if (loadLibrary(nodeKitLibraryName)) return readObjectOfType(btw,fr);
if (loadLibrary(nodeKitLibraryName)==LOADED) return readObjectOfType(btw,fr);
// otherwise try the osgdb_ plugin library.
std::string pluginLibraryName = createLibraryNameForExtension(libraryName);
if (loadLibrary(pluginLibraryName)) return readObjectOfType(btw,fr);
if (loadLibrary(pluginLibraryName)==LOADED) return readObjectOfType(btw,fr);
}
}
else if (fr[1].isOpenBracket())
@ -902,16 +902,16 @@ osg::Object* Registry::readObjectOfType(const basic_type_wrapper &btw,Input& fr)
// first try the standard nodekit library.
std::string nodeKitLibraryName = createLibraryNameForNodeKit(libraryName);
if (loadLibrary(nodeKitLibraryName))
if (loadLibrary(nodeKitLibraryName)==LOADED)
{
mitr = _objectWrapperMap.find(*aitr);
}
if (mitr==_objectWrapperMap.end())
if (mitr==_objectWrapperMap.end()==LOADED)
{
// otherwise try the osgdb_ plugin library.
std::string pluginLibraryName = createLibraryNameForExtension(libraryName);
if (loadLibrary(pluginLibraryName))
if (loadLibrary(pluginLibraryName)==LOADED)
{
mitr = _objectWrapperMap.find(*aitr);
}
@ -964,11 +964,11 @@ osg::Object* Registry::readObject(DotOsgWrapperMap& dowMap,Input& fr)
// first try the standard nodekit library.
std::string nodeKitLibraryName = createLibraryNameForNodeKit(libraryName);
if (loadLibrary(nodeKitLibraryName)) return readObject(dowMap,fr);
if (loadLibrary(nodeKitLibraryName)==LOADED) return readObject(dowMap,fr);
// otherwise try the osgdb_ plugin library.
std::string pluginLibraryName = createLibraryNameForExtension(libraryName);
if (loadLibrary(pluginLibraryName)) return readObject(dowMap,fr);
if (loadLibrary(pluginLibraryName)==LOADED) return readObject(dowMap,fr);
}
}
else if (fr[1].isOpenBracket())
@ -1024,7 +1024,7 @@ osg::Object* Registry::readObject(DotOsgWrapperMap& dowMap,Input& fr)
// first try the standard nodekit library.
std::string nodeKitLibraryName = createLibraryNameForNodeKit(libraryName);
if (loadLibrary(nodeKitLibraryName))
if (loadLibrary(nodeKitLibraryName)==LOADED)
{
mitr = _objectWrapperMap.find(*aitr);
}
@ -1033,7 +1033,7 @@ osg::Object* Registry::readObject(DotOsgWrapperMap& dowMap,Input& fr)
{
// otherwise try the osgdb_ plugin library.
std::string pluginLibraryName = createLibraryNameForExtension(libraryName);
if (loadLibrary(pluginLibraryName))
if (loadLibrary(pluginLibraryName)==LOADED)
{
mitr = _objectWrapperMap.find(*aitr);
}
@ -1253,11 +1253,11 @@ bool Registry::writeObject(const osg::Object& obj,Output& fw)
{
// first try the standard nodekit library.
std::string nodeKitLibraryName = createLibraryNameForNodeKit(libraryName);
if (loadLibrary(nodeKitLibraryName)) return writeObject(obj,fw);
if (loadLibrary(nodeKitLibraryName)==LOADED) return writeObject(obj,fw);
// otherwise try the osgdb_ plugin library.
std::string pluginLibraryName = createLibraryNameForExtension(libraryName);
if (loadLibrary(pluginLibraryName)) return writeObject(obj,fw);
if (loadLibrary(pluginLibraryName)==LOADED) return writeObject(obj,fw);
// otherwise try simple class name
if (itr == _classNameWrapperMap.end())
@ -1323,7 +1323,7 @@ bool Registry::writeObject(const osg::Object& obj,Output& fw)
// first try the standard nodekit library.
std::string nodeKitLibraryName = createLibraryNameForNodeKit(libraryName);
if (loadLibrary(nodeKitLibraryName))
if (loadLibrary(nodeKitLibraryName)==LOADED)
{
mitr = _objectWrapperMap.find(*aitr);
}
@ -1332,7 +1332,7 @@ bool Registry::writeObject(const osg::Object& obj,Output& fw)
{
// otherwise try the osgdb_ plugin library.
std::string pluginLibraryName = createLibraryNameForExtension(libraryName);
if (loadLibrary(pluginLibraryName))
if (loadLibrary(pluginLibraryName)==LOADED)
{
mitr = _objectWrapperMap.find(*aitr);
}
@ -1540,7 +1540,7 @@ ReaderWriter::ReadResult Registry::read(const ReadFunctor& readFunctor)
// now look for a plug-in to load the file.
std::string libraryName = createLibraryNameForFile(readFunctor._filename);
if (loadLibrary(libraryName))
if (loadLibrary(libraryName)!=NOT_LOADED)
{
for(;itr.valid();++itr)
{
@ -1690,7 +1690,7 @@ ReaderWriter::WriteResult Registry::writeObjectImplementation(const Object& obj,
// now look for a plug-in to save the file.
std::string libraryName = createLibraryNameForFile(fileName);
if (loadLibrary(libraryName))
if (loadLibrary(libraryName)==LOADED)
{
for(;itr.valid();++itr)
{
@ -1745,7 +1745,7 @@ ReaderWriter::WriteResult Registry::writeImageImplementation(const Image& image,
// now look for a plug-in to save the file.
std::string libraryName = createLibraryNameForFile(fileName);
if (loadLibrary(libraryName))
if (loadLibrary(libraryName)==LOADED)
{
for(;itr.valid();++itr)
{
@ -1799,7 +1799,7 @@ ReaderWriter::WriteResult Registry::writeHeightFieldImplementation(const HeightF
// now look for a plug-in to save the file.
std::string libraryName = createLibraryNameForFile(fileName);
if (loadLibrary(libraryName))
if (loadLibrary(libraryName)==LOADED)
{
for(;itr.valid();++itr)
{
@ -1855,7 +1855,7 @@ ReaderWriter::WriteResult Registry::writeNodeImplementation(const Node& node,con
std::string libraryName = createLibraryNameForFile(fileName);
if (loadLibrary(libraryName))
if (loadLibrary(libraryName)==LOADED)
{
for(;itr.valid();++itr)
{
@ -1909,7 +1909,7 @@ ReaderWriter::WriteResult Registry::writeShaderImplementation(const Shader& shad
// now look for a plug-in to save the file.
std::string libraryName = createLibraryNameForFile(fileName);
if (loadLibrary(libraryName))
if (loadLibrary(libraryName)==LOADED)
{
for(;itr.valid();++itr)
{