1 //===- ContextFactory.h ---------------------------------------------------===// 2 // 3 // The MCLinker Project 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 #ifndef MCLD_MC_CONTEXTFACTORY_H 10 #define MCLD_MC_CONTEXTFACTORY_H 11 12 #include <mcld/LD/LDContext.h> 13 #include <mcld/Support/UniqueGCFactory.h> 14 #include <mcld/Support/Path.h> 15 16 namespace mcld 17 { 18 /** \class ContextFactory 19 * \brief ContextFactory avoids the duplicated LDContext of the same file. 20 * 21 * MCLinker is designed for efficient memory usage. Because user can give 22 * MCLinker the same input file many times on the command line, MCLinker must 23 * avoid opening identical file twice. 24 * 25 * ContextFactory is the guard to prevent redundant opening. MCLinker does not 26 * create LDContext directly. Instead, it creates LDContext by ContextFactory. 27 * ContextFactory returns the identical reference of LDContext if it's openend. 28 * 29 * @see LDContext 30 * @see UniqueGCFactoryBase 31 */ 32 class ContextFactory : public UniqueGCFactoryBase<sys::fs::Path, LDContext, 0> 33 { 34 public: 35 explicit ContextFactory(size_t pNum); 36 ~ContextFactory(); 37 38 LDContext* produce(); 39 LDContext* produce(const sys::fs::Path& pPath); 40 }; 41 42 } // namespace of mcld 43 44 #endif 45 46
