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118 lines
3.2 KiB
118 lines
3.2 KiB
/*=========================================================================
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Program: CMake - Cross-Platform Makefile Generator
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Module: $RCSfile: cmDynamicLoader.cxx,v $
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Language: C++
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Date: $Date: 2006-03-16 22:09:08 $
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Version: $Revision: 1.29 $
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Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
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See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notices for more information.
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=========================================================================*/
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#include "cmDynamicLoader.h"
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class cmDynamicLoaderCache
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{
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public:
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~cmDynamicLoaderCache();
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void CacheFile(const char* path,
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const cmsys::DynamicLoader::LibraryHandle&);
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bool GetCacheFile(const char* path, cmsys::DynamicLoader::LibraryHandle&);
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bool FlushCache(const char* path);
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void FlushCache();
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static cmDynamicLoaderCache* GetInstance();
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private:
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std::map<cmStdString, cmsys::DynamicLoader::LibraryHandle> CacheMap;
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static cmDynamicLoaderCache* Instance;
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};
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cmDynamicLoaderCache* cmDynamicLoaderCache::Instance = 0;
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cmDynamicLoaderCache::~cmDynamicLoaderCache()
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{
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}
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void cmDynamicLoaderCache::CacheFile(const char* path,
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const cmsys::DynamicLoader::LibraryHandle& p)
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{
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cmsys::DynamicLoader::LibraryHandle h;
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if ( this->GetCacheFile(path, h) )
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{
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this->FlushCache(path);
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}
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this->CacheMap[path] = p;
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}
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bool cmDynamicLoaderCache::GetCacheFile(const char* path,
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cmsys::DynamicLoader::LibraryHandle& p)
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{
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std::map<cmStdString, cmsys::DynamicLoader::LibraryHandle>::iterator it
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= this->CacheMap.find(path);
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if ( it != this->CacheMap.end() )
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{
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p = it->second;
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return true;
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}
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return false;
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}
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bool cmDynamicLoaderCache::FlushCache(const char* path)
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{
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std::map<cmStdString, cmsys::DynamicLoader::LibraryHandle>::iterator it
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= this->CacheMap.find(path);
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bool ret = false;
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if ( it != this->CacheMap.end() )
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{
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cmsys::DynamicLoader::CloseLibrary(it->second);
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this->CacheMap.erase(it);
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ret = true;
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}
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return ret;
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}
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void cmDynamicLoaderCache::FlushCache()
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{
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for ( std::map<cmStdString,
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cmsys::DynamicLoader::LibraryHandle>::iterator it
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= this->CacheMap.begin();
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it != this->CacheMap.end(); it++ )
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{
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cmsys::DynamicLoader::CloseLibrary(it->second);
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}
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delete cmDynamicLoaderCache::Instance;
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cmDynamicLoaderCache::Instance = 0;
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}
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cmDynamicLoaderCache* cmDynamicLoaderCache::GetInstance()
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{
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if ( !cmDynamicLoaderCache::Instance )
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{
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cmDynamicLoaderCache::Instance = new cmDynamicLoaderCache;
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}
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return cmDynamicLoaderCache::Instance;
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}
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cmsys::DynamicLoader::LibraryHandle cmDynamicLoader::OpenLibrary(
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const char* libname )
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{
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cmsys::DynamicLoader::LibraryHandle lh;
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if ( cmDynamicLoaderCache::GetInstance()->GetCacheFile(libname, lh) )
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{
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return lh;
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}
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lh = cmsys::DynamicLoader::OpenLibrary(libname);
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cmDynamicLoaderCache::GetInstance()->CacheFile(libname, lh);
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return lh;
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}
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void cmDynamicLoader::FlushCache()
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{
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cmDynamicLoaderCache::GetInstance()->FlushCache();
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}
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