1 //===-- Process.cpp - Implement OS Process Concept --------------*- C++ -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 // This file implements the operating system Process concept.
11 //===----------------------------------------------------------------------===//
13 #include "llvm/Support/Process.h"
14 #include "llvm/ADT/STLExtras.h"
15 #include "llvm/ADT/StringExtras.h"
16 #include "llvm/Config/config.h"
17 #include "llvm/Config/llvm-config.h"
18 #include "llvm/Support/CrashRecoveryContext.h"
19 #include "llvm/Support/FileSystem.h"
20 #include "llvm/Support/Path.h"
21 #include "llvm/Support/Program.h"
26 //===----------------------------------------------------------------------===//
27 //=== WARNING: Implementation here must contain only TRULY operating system
28 //=== independent code.
29 //===----------------------------------------------------------------------===//
31 Optional<std::string> Process::FindInEnvPath(StringRef EnvName,
33 return FindInEnvPath(EnvName, FileName, {});
36 Optional<std::string> Process::FindInEnvPath(StringRef EnvName,
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())
45 const char EnvPathSeparatorStr[] = {EnvPathSeparator, '\0'};
46 SmallVector<StringRef, 8> Dirs;
47 SplitString(OptPath.getValue(), Dirs, EnvPathSeparatorStr);
49 for (StringRef Dir : Dirs) {
53 if (any_of(IgnoreList, [&](StringRef S) { return fs::equivalent(S, Dir); }))
56 SmallString<128> FilePath(Dir);
57 path::append(FilePath, FileName);
58 if (fs::exists(Twine(FilePath))) {
59 FoundPath = FilePath.str();
68 #define COLOR(FGBG, CODE, BOLD) "\033[0;" BOLD FGBG CODE "m"
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)\
81 static const char colorcodes[2][2][8][10] = {
82 { ALLCOLORS("3",""), ALLCOLORS("3","1;") },
83 { ALLCOLORS("4",""), ALLCOLORS("4","1;") }
86 // A CMake option controls wheter we emit core dumps by default. An application
87 // may disable core dumps by calling Process::PreventCoreFiles().
88 static bool coreFilesPrevented = !LLVM_ENABLE_CRASH_DUMPS;
90 bool Process::AreCoreFilesPrevented() { return coreFilesPrevented; }
92 LLVM_ATTRIBUTE_NORETURN
93 void Process::Exit(int RetCode) {
94 if (CrashRecoveryContext *CRC = CrashRecoveryContext::GetCurrent())
95 CRC->HandleExit(RetCode);
99 // Include the platform-specific parts of this class.
101 #include "Unix/Process.inc"
104 #include "Windows/Process.inc"