1 //===-- Process.cpp - Implement OS Process Concept --------------*- 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 // This file implements the operating system Process concept. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm/Support/Process.h" 15 #include "llvm/ADT/STLExtras.h" 16 #include "llvm/ADT/StringExtras.h" 17 #include "llvm/Config/llvm-config.h" 18 #include "llvm/Config/config.h" 19 #include "llvm/Support/FileSystem.h" 20 #include "llvm/Support/Path.h" 21 #include "llvm/Support/Program.h" 22 23 using namespace llvm; 24 using namespace sys; 25 26 //===----------------------------------------------------------------------===// 27 //=== WARNING: Implementation here must contain only TRULY operating system 28 //=== independent code. 29 //===----------------------------------------------------------------------===// 30 31 Optional<std::string> Process::FindInEnvPath(StringRef EnvName, 32 StringRef FileName) { 33 return FindInEnvPath(EnvName, FileName, {}); 34 } 35 36 Optional<std::string> Process::FindInEnvPath(StringRef EnvName, 37 StringRef FileName, 38 ArrayRef<std::string> IgnoreList) { 39 assert(!path::is_absolute(FileName)); 40 Optional<std::string> FoundPath; 41 Optional<std::string> OptPath = Process::GetEnv(EnvName); 42 if (!OptPath.hasValue()) 43 return FoundPath; 44 45 const char EnvPathSeparatorStr[] = {EnvPathSeparator, '\0'}; 46 SmallVector<StringRef, 8> Dirs; 47 SplitString(OptPath.getValue(), Dirs, EnvPathSeparatorStr); 48 49 for (StringRef Dir : Dirs) { 50 if (Dir.empty()) 51 continue; 52 53 if (any_of(IgnoreList, [&](StringRef S) { return fs::equivalent(S, Dir); })) 54 continue; 55 56 SmallString<128> FilePath(Dir); 57 path::append(FilePath, FileName); 58 if (fs::exists(Twine(FilePath))) { 59 FoundPath = FilePath.str(); 60 break; 61 } 62 } 63 64 return FoundPath; 65 } 66 67 68 #define COLOR(FGBG, CODE, BOLD) "\033[0;" BOLD FGBG CODE "m" 69 70 #define ALLCOLORS(FGBG,BOLD) {\ 71 COLOR(FGBG, "0", BOLD),\ 72 COLOR(FGBG, "1", BOLD),\ 73 COLOR(FGBG, "2", BOLD),\ 74 COLOR(FGBG, "3", BOLD),\ 75 COLOR(FGBG, "4", BOLD),\ 76 COLOR(FGBG, "5", BOLD),\ 77 COLOR(FGBG, "6", BOLD),\ 78 COLOR(FGBG, "7", BOLD)\ 79 } 80 81 static const char colorcodes[2][2][8][10] = { 82 { ALLCOLORS("3",""), ALLCOLORS("3","1;") }, 83 { ALLCOLORS("4",""), ALLCOLORS("4","1;") } 84 }; 85 86 // This is set to true when Process::PreventCoreFiles() is called. 87 static bool coreFilesPrevented = false; 88 89 bool Process::AreCoreFilesPrevented() { 90 return LLVM_ENABLE_CRASH_DUMPS ? coreFilesPrevented : false; 91 } 92 93 // Include the platform-specific parts of this class. 94 #ifdef LLVM_ON_UNIX 95 #include "Unix/Process.inc" 96 #endif 97 #ifdef _WIN32 98 #include "Windows/Process.inc" 99 #endif 100