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