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105 lines
3.0 KiB
105 lines
3.0 KiB
/*============================================================================
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CMake - Cross Platform Makefile Generator
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Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
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Distributed under the OSI-approved BSD License (the "License");
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see accompanying file Copyright.txt for details.
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This software is distributed WITHOUT ANY WARRANTY; without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the License 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, 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<std::string, 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(
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const char* path, 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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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<std::string, 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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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<std::string, 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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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<std::string, cmsys::DynamicLoader::LibraryHandle>::iterator
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it = this->CacheMap.begin();
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it != this->CacheMap.end(); it++) {
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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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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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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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