ServiceRegistry/interface/ESParentContext.h

0001 #ifndef FWCore_ServiceRegistry_ESParentContext_h
0002 #define FWCore_ServiceRegistry_ESParentContext_h
0003
0004 /**\class edm::ESParentContext
0005
0006  Description: This is intended to be used as a member of ESModuleCallingContext.
0007
0008  Usage:
0009
0010
0011 */
0012 //
0013 // Original Author: C. Jones
0014 //         Created: 2/07/2021
0015
0016 namespace edm {
0017
0018   class ModuleCallingContext;
0019   class ESModuleCallingContext;
0020
0021   class ESParentContext {
0022   public:
0023     enum class Type { kModule, kESModule, kInvalid };
0024
0025     ESParentContext();
0026     explicit ESParentContext(ModuleCallingContext const*) noexcept;
0027     explicit ESParentContext(ESModuleCallingContext const*) noexcept;
0028
0029     Type type() const noexcept { return type_; }
0030
0031     ModuleCallingContext const* moduleCallingContext() const;
0032     ESModuleCallingContext const* esmoduleCallingContext() const;
0033
0034   private:
0035     Type type_;
0036
0037     union Parent {
0038       ModuleCallingContext const* module;
0039       ESModuleCallingContext const* esmodule;
0040     } parent_;
0041   };
0042 }  // namespace edm
0043 #endif