128 lines
3.9 KiB
C++
128 lines
3.9 KiB
C++
//===-- Process.cpp - Implement OS Process Concept --------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the operating system Process concept.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/Process.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/Config/config.h"
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#include "llvm/Config/llvm-config.h"
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#include "llvm/Support/CrashRecoveryContext.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/Program.h"
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#include <optional>
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#include <stdlib.h> // for _Exit
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using namespace llvm;
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using namespace sys;
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//===----------------------------------------------------------------------===//
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//=== WARNING: Implementation here must contain only TRULY operating system
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//=== independent code.
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//===----------------------------------------------------------------------===//
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std::optional<std::string>
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Process::FindInEnvPath(StringRef EnvName, StringRef FileName, char Separator) {
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return FindInEnvPath(EnvName, FileName, {}, Separator);
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}
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std::optional<std::string>
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Process::FindInEnvPath(StringRef EnvName, StringRef FileName,
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ArrayRef<std::string> IgnoreList, char Separator) {
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assert(!path::is_absolute(FileName));
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std::optional<std::string> FoundPath;
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std::optional<std::string> OptPath = Process::GetEnv(EnvName);
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if (!OptPath)
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return FoundPath;
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const char EnvPathSeparatorStr[] = {Separator, '\0'};
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SmallVector<StringRef, 8> Dirs;
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SplitString(*OptPath, Dirs, EnvPathSeparatorStr);
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for (StringRef Dir : Dirs) {
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if (Dir.empty())
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continue;
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if (any_of(IgnoreList, [&](StringRef S) { return fs::equivalent(S, Dir); }))
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continue;
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SmallString<128> FilePath(Dir);
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path::append(FilePath, FileName);
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if (fs::exists(Twine(FilePath))) {
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FoundPath = std::string(FilePath);
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break;
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}
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}
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return FoundPath;
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}
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// clang-format off
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#define COLOR(FGBG, CODE, BOLD) "\033[0;" BOLD FGBG CODE "m"
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#define ALLCOLORS(FGBG, BRIGHT, BOLD) \
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{ \
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COLOR(FGBG, "0", BOLD), \
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COLOR(FGBG, "1", BOLD), \
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COLOR(FGBG, "2", BOLD), \
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COLOR(FGBG, "3", BOLD), \
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COLOR(FGBG, "4", BOLD), \
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COLOR(FGBG, "5", BOLD), \
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COLOR(FGBG, "6", BOLD), \
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COLOR(FGBG, "7", BOLD), \
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COLOR(BRIGHT, "0", BOLD), \
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COLOR(BRIGHT, "1", BOLD), \
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COLOR(BRIGHT, "2", BOLD), \
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COLOR(BRIGHT, "3", BOLD), \
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COLOR(BRIGHT, "4", BOLD), \
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COLOR(BRIGHT, "5", BOLD), \
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COLOR(BRIGHT, "6", BOLD), \
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COLOR(BRIGHT, "7", BOLD), \
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}
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// bg
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// | bold
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// | |
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// | | codes
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// | | |
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// | | |
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static const char colorcodes[2][2][16][11] = {
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{ ALLCOLORS("3", "9", ""), ALLCOLORS("3", "9", "1;"),},
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{ ALLCOLORS("4", "10", ""), ALLCOLORS("4", "10", "1;")}
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};
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// clang-format on
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// A CMake option controls wheter we emit core dumps by default. An application
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// may disable core dumps by calling Process::PreventCoreFiles().
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static bool coreFilesPrevented = !LLVM_ENABLE_CRASH_DUMPS;
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bool Process::AreCoreFilesPrevented() { return coreFilesPrevented; }
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[[noreturn]] void Process::Exit(int RetCode, bool NoCleanup) {
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if (CrashRecoveryContext *CRC = CrashRecoveryContext::GetCurrent())
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CRC->HandleExit(RetCode);
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if (NoCleanup)
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ExitNoCleanup(RetCode);
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else
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::exit(RetCode);
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}
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// Include the platform-specific parts of this class.
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#if defined(LLVM_ON_UNIX) || defined(__yggdrasil__)
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#include "Unix/Process.inc"
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#endif
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#ifdef _WIN32
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#include "Windows/Process.inc"
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#endif
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