1 /* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
2 file Copyright.txt or https://cmake.org/licensing for details. */
3 #include "cmDynamicLoader.h"
10 class cmDynamicLoaderCache
13 ~cmDynamicLoaderCache();
14 void CacheFile(const char* path, cmsys::DynamicLoader::LibraryHandle /*p*/);
15 bool GetCacheFile(const char* path,
16 cmsys::DynamicLoader::LibraryHandle& /*p*/);
17 bool FlushCache(const char* path);
19 static cmDynamicLoaderCache& GetInstance();
22 std::map<std::string, cmsys::DynamicLoader::LibraryHandle> CacheMap;
23 static cmDynamicLoaderCache Instance;
26 cmDynamicLoaderCache cmDynamicLoaderCache::Instance;
29 cmDynamicLoaderCache::~cmDynamicLoaderCache() = default;
31 void cmDynamicLoaderCache::CacheFile(const char* path,
32 cmsys::DynamicLoader::LibraryHandle p)
34 cmsys::DynamicLoader::LibraryHandle h;
35 if (this->GetCacheFile(path, h)) {
36 this->FlushCache(path);
38 this->CacheMap[path] = p;
41 bool cmDynamicLoaderCache::GetCacheFile(const char* path,
42 cmsys::DynamicLoader::LibraryHandle& p)
44 auto it = this->CacheMap.find(path);
45 if (it != this->CacheMap.end()) {
52 bool cmDynamicLoaderCache::FlushCache(const char* path)
54 auto it = this->CacheMap.find(path);
56 if (it != this->CacheMap.end()) {
57 cmsys::DynamicLoader::CloseLibrary(it->second);
58 this->CacheMap.erase(it);
64 void cmDynamicLoaderCache::FlushCache()
66 for (auto const& it : this->CacheMap) {
67 cmsys::DynamicLoader::CloseLibrary(it.second);
69 this->CacheMap.clear();
72 cmDynamicLoaderCache& cmDynamicLoaderCache::GetInstance()
74 return cmDynamicLoaderCache::Instance;
77 cmsys::DynamicLoader::LibraryHandle cmDynamicLoader::OpenLibrary(
80 cmsys::DynamicLoader::LibraryHandle lh;
81 if (cmDynamicLoaderCache::GetInstance().GetCacheFile(libname, lh)) {
84 lh = cmsys::DynamicLoader::OpenLibrary(libname);
85 cmDynamicLoaderCache::GetInstance().CacheFile(libname, lh);
89 void cmDynamicLoader::FlushCache()
91 cmDynamicLoaderCache::GetInstance().FlushCache();