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File indexing completed on 2024-04-06 12:11:55
0001 #ifndef FWCore_Concurrency_SharedResourceNames_h 0002 #define FWCore_Concurrency_SharedResourceNames_h 0003 // 0004 // Package: Concurrency 0005 // Class : ShareResourceNames 0006 // 0007 /**\class edm::SharedResourceNames 0008 0009 Description: Contains the names of external shared resources. 0010 0011 */ 0012 // 0013 // Original Author: W. David Dagenhart 0014 // Created: 19 November 2013 0015 // 0016 0017 #include <string> 0018 0019 namespace edm { 0020 class SharedResourceNames { 0021 public: 0022 // GEANT 4.9.X needs to be declared a shared resource 0023 // In the future, 4.10.X and later might not need to be 0024 static const std::string kGEANT; 0025 static const std::string kCLHEPRandomEngine; 0026 static const std::string kPythia6; 0027 static const std::string kPythia8; 0028 static const std::string kPhotos; 0029 static const std::string kTauola; 0030 static const std::string kEvtGen; 0031 }; 0032 0033 //ES modules can not share resources with ED modules 0034 class ESSharedResourceNames { 0035 public: 0036 static const std::string kDDGeometry; 0037 static const std::string kDD4hep; 0038 }; 0039 0040 // Each time the following function is called, it returns a different 0041 // name. The purpose is to address the following problem. 0042 // A few classes that are modules sometimes use shared resources 0043 // and sometimes do not use shared resources. It depends on their 0044 // configuration and also on their template parameters. These classes 0045 // have to always inherit from the SharedResources base class. If 0046 // they do not declare any share resources the Framework assumes 0047 // they depend on all possible shared resources. This causes performance 0048 // problems. In the cases where they really do not use any shared 0049 // resources, one has to declare something to avoid the default 0050 // assumption that they depend on everything. If a nonexistent 0051 // shared resource is declared and as long as nothing else declares 0052 // the same shared resource name, there will be no performance effects. 0053 // This function provides a unique name to be used for that purpose. 0054 std::string uniqueSharedResourceName(); 0055 } // namespace edm 0056 #endif
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