1 //===-- JIT.h - Abstract Execution Engine Interface -------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // Common functionality for JITEventListener implementations 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef EVENT_LISTENER_COMMON_H 15 #define EVENT_LISTENER_COMMON_H 16 17 #include "llvm/ADT/DenseMap.h" 18 #include "llvm/IR/DebugInfo.h" 19 #include "llvm/IR/Metadata.h" 20 #include "llvm/IR/ValueHandle.h" 21 #include "llvm/Support/Path.h" 22 23 namespace llvm { 24 25 namespace jitprofiling { 26 27 class FilenameCache { 28 // Holds the filename of each Scope, so that we can pass a null-terminated 29 // string into oprofile. Use an AssertingVH rather than a ValueMap because we 30 // shouldn't be modifying any MDNodes while this map is alive. 31 DenseMap<AssertingVH<MDNode>, std::string> Filenames; 32 DenseMap<AssertingVH<MDNode>, std::string> Paths; 33 34 public: 35 const char *getFilename(MDNode *Scope) { 36 std::string &Filename = Filenames[Scope]; 37 if (Filename.empty()) { 38 DIScope DIScope(Scope); 39 Filename = DIScope.getFilename(); 40 } 41 return Filename.c_str(); 42 } 43 44 const char *getFullPath(MDNode *Scope) { 45 std::string &P = Paths[Scope]; 46 if (P.empty()) { 47 DIScope DIScope(Scope); 48 StringRef DirName = DIScope.getDirectory(); 49 StringRef FileName = DIScope.getFilename(); 50 SmallString<256> FullPath; 51 if (DirName != "." && DirName != "") { 52 FullPath = DirName; 53 } 54 if (FileName != "") { 55 sys::path::append(FullPath, FileName); 56 } 57 P = FullPath.str(); 58 } 59 return P.c_str(); 60 } 61 }; 62 63 } // namespace jitprofiling 64 65 } // namespace llvm 66 67 #endif //EVENT_LISTENER_COMMON_H 68
