| //===-- Process.cpp - Implement OS Process Concept --------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements the operating system Process concept. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/ADT/StringExtras.h" |
| #include "llvm/Config/config.h" |
| #include "llvm/Support/ErrorHandling.h" |
| #include "llvm/Support/FileSystem.h" |
| #include "llvm/Support/Process.h" |
| #include "llvm/Support/Program.h" |
| |
| using namespace llvm; |
| using namespace sys; |
| |
| //===----------------------------------------------------------------------===// |
| //=== WARNING: Implementation here must contain only TRULY operating system |
| //=== independent code. |
| //===----------------------------------------------------------------------===// |
| |
| /// \brief A helper function to compute the elapsed wall-time since the program |
| /// started. |
| /// |
| /// Note that this routine actually computes the elapsed wall time since the |
| /// first time it was called. However, we arrange to have it called during the |
| /// startup of the process to get approximately correct results. |
| static TimeValue getElapsedWallTime() { |
| static TimeValue &StartTime = *new TimeValue(TimeValue::now()); |
| return TimeValue::now() - StartTime; |
| } |
| |
| /// \brief A special global variable to ensure we call \c getElapsedWallTime |
| /// during global initialization of the program. |
| /// |
| /// Note that this variable is never referenced elsewhere. Doing so could |
| /// create race conditions during program startup or shutdown. |
| static volatile TimeValue DummyTimeValue = getElapsedWallTime(); |
| |
| Optional<std::string> Process::FindInEnvPath(const std::string& EnvName, |
| const std::string& FileName) |
| { |
| Optional<std::string> FoundPath; |
| Optional<std::string> OptPath = Process::GetEnv(EnvName); |
| if (!OptPath.hasValue()) |
| return FoundPath; |
| |
| const char EnvPathSeparatorStr[] = {EnvPathSeparator, '\0'}; |
| SmallVector<StringRef, 8> Dirs; |
| SplitString(OptPath.getValue(), Dirs, EnvPathSeparatorStr); |
| |
| for (const auto &Dir : Dirs) { |
| if (Dir.empty()) |
| continue; |
| |
| SmallString<128> FilePath(Dir); |
| path::append(FilePath, FileName); |
| if (fs::exists(Twine(FilePath))) { |
| FoundPath = FilePath.str(); |
| break; |
| } |
| } |
| |
| return FoundPath; |
| } |
| |
| |
| #define COLOR(FGBG, CODE, BOLD) "\033[0;" BOLD FGBG CODE "m" |
| |
| #define ALLCOLORS(FGBG,BOLD) {\ |
| COLOR(FGBG, "0", BOLD),\ |
| COLOR(FGBG, "1", BOLD),\ |
| COLOR(FGBG, "2", BOLD),\ |
| COLOR(FGBG, "3", BOLD),\ |
| COLOR(FGBG, "4", BOLD),\ |
| COLOR(FGBG, "5", BOLD),\ |
| COLOR(FGBG, "6", BOLD),\ |
| COLOR(FGBG, "7", BOLD)\ |
| } |
| |
| static const char colorcodes[2][2][8][10] = { |
| { ALLCOLORS("3",""), ALLCOLORS("3","1;") }, |
| { ALLCOLORS("4",""), ALLCOLORS("4","1;") } |
| }; |
| |
| // Include the platform-specific parts of this class. |
| #ifdef LLVM_ON_UNIX |
| #include "Unix/Process.inc" |
| #endif |
| #ifdef LLVM_ON_WIN32 |
| #include "Windows/Process.inc" |
| #endif |