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Keep track of libraries so that you can load them as many times as you want...

This commit is contained in:
Andy Cedilnik 2002-09-23 16:24:59 -04:00
parent 576a490daa
commit 1b4171c5e4
1 changed files with 116 additions and 9 deletions
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117
Source/cmDynamicLoader.cxx
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@ -24,6 +24,81 @@
// Each part of the ifdef contains a complete implementation for
// the static methods of cmDynamicLoader.
class cmDynamicLoaderCache
{
public:
~cmDynamicLoaderCache();
void CacheFile(const char* path, const cmLibHandle&);
bool GetCacheFile(const char* path, cmLibHandle&);
bool FlushCache(const char* path);
void FlushCache();
static cmDynamicLoaderCache* GetInstance();
private:
std::map<std::string, void*> m_CacheMap;
static cmDynamicLoaderCache* Instance;
};
cmDynamicLoaderCache* cmDynamicLoaderCache::Instance = 0;
cmDynamicLoaderCache::~cmDynamicLoaderCache()
{
this->FlushCache();
}
void cmDynamicLoaderCache::CacheFile(const char* path, const cmLibHandle& p)
{
cmLibHandle h;
if ( this->GetCacheFile(path, h) )
{
this->FlushCache(path);
}
this->m_CacheMap[path] = p;
}
bool cmDynamicLoaderCache::GetCacheFile(const char* path, cmLibHandle& p)
{
std::map<std::string, void*>::iterator it = m_CacheMap.find(path);
if ( it != m_CacheMap.end() )
{
p = it->second;
return true;
}
return false;
}
bool cmDynamicLoaderCache::FlushCache(const char* path)
{
std::map<std::string, void*>::iterator it = m_CacheMap.find(path);
if ( it != m_CacheMap.end() )
{
cmDynamicLoader::CloseLibrary(it->second);
m_CacheMap.erase(it);
return true;
}
return false;
}
void cmDynamicLoaderCache::FlushCache()
{
for ( std::map<std::string, void*>::iterator it = m_CacheMap.begin();
it != m_CacheMap.end(); it++ )
{
cmDynamicLoader::CloseLibrary(it->second);
}
m_CacheMap.erase(m_CacheMap.begin(), m_CacheMap.end());
}
cmDynamicLoaderCache* cmDynamicLoaderCache::GetInstance()
{
if ( !cmDynamicLoaderCache::Instance )
{
cmDynamicLoaderCache::Instance = new cmDynamicLoaderCache;
}
return cmDynamicLoaderCache::Instance;
}
// ---------------------------------------------------------------
// 1. Implementation for HPUX machines
#ifdef __hpux
@ -32,7 +107,15 @@
cmLibHandle cmDynamicLoader::OpenLibrary(const char* libname )
{
return shl_load(libname, BIND_DEFERRED | DYNAMIC_PATH, 0L);
cmLibHandle lh;
if ( cmDynamicLoaderCache::GetInstance()->GetCacheFile(libname, lh) )
{
return lh;
}
lh = shl_load(libname, BIND_DEFERRED | DYNAMIC_PATH, 0L);
cmDynamicLoaderCache::GetInstance()->CacheFile(libname, lh);
return lh;
}
int cmDynamicLoader::CloseLibrary(cmLibHandle lib)
@ -80,11 +163,19 @@ const char* cmDynamicLoader::LastError()
cmLibHandle cmDynamicLoader::OpenLibrary(const char* libname )
{
cmLibHandle lh;
if ( cmDynamicLoaderCache::GetInstance()->GetCacheFile(libname, lh) )
{
return lh;
}
NSObjectFileImageReturnCode rc;
NSObjectFileImage image;
rc = NSCreateObjectFileImageFromFile(libname, &image);
return NSLinkModule(image, libname, TRUE);
lh = NSLinkModule(image, libname, TRUE);
cmDynamicLoaderCache::GetInstance()->CacheFile(libname, lh);
return lh;
}
int cmDynamicLoader::CloseLibrary(cmLibHandle lib)
@ -136,15 +227,23 @@ const char* cmDynamicLoader::LastError()
cmLibHandle cmDynamicLoader::OpenLibrary(const char* libname )
{
cmLibHandle lh;
if ( cmDynamicLoaderCache::GetInstance()->GetCacheFile(libname, lh) )
{
return lh;
}
#ifdef UNICODE
wchar_t *libn = new wchar_t [mbstowcs(NULL, libname, 32000)];
mbstowcs(libn, libname, 32000);
cmLibHandle ret = LoadLibrary(libn);
delete [] libn;
return ret;
lh = ret;
#else
return LoadLibrary(libname);
lh = LoadLibrary(libname);
#endif
cmDynamicLoaderCache::GetInstance()->CacheFile(libname, lh);
return lh;
}
int cmDynamicLoader::CloseLibrary(cmLibHandle lib)
@ -213,7 +312,15 @@ const char* cmDynamicLoader::LastError()
cmLibHandle cmDynamicLoader::OpenLibrary(const char* libname )
{
return dlopen(libname, RTLD_LAZY);
cmLibHandle lh;
if ( cmDynamicLoaderCache::GetInstance()->GetCacheFile(libname, lh) )
{
return lh;
}
lh = dlopen(libname, RTLD_LAZY);
cmDynamicLoaderCache::GetInstance()->CacheFile(libname, lh);
return lh;
}
int cmDynamicLoader::CloseLibrary(cmLibHandle lib)