| //===--- ToolOutputFile.cpp - Implement the ToolOutputFile class --------===// |
| // |
| // 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 implements the ToolOutputFile class. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/Support/ToolOutputFile.h" |
| #include "llvm/ADT/Triple.h" |
| #include "llvm/Support/FileSystem.h" |
| #include "llvm/Support/Signals.h" |
| using namespace llvm; |
| |
| static bool isStdout(StringRef Filename) { return Filename == "-"; } |
| |
| ToolOutputFile::CleanupInstaller::CleanupInstaller(StringRef Filename) |
| : Filename(std::string(Filename)), Keep(false) { |
| // Arrange for the file to be deleted if the process is killed. |
| if (!isStdout(Filename)) |
| sys::RemoveFileOnSignal(Filename); |
| } |
| |
| ToolOutputFile::CleanupInstaller::~CleanupInstaller() { |
| if (isStdout(Filename)) |
| return; |
| |
| // Delete the file if the client hasn't told us not to. |
| if (!Keep) |
| sys::fs::remove(Filename); |
| |
| // Ok, the file is successfully written and closed, or deleted. There's no |
| // further need to clean it up on signals. |
| sys::DontRemoveFileOnSignal(Filename); |
| } |
| |
| ToolOutputFile::ToolOutputFile(StringRef Filename, std::error_code &EC, |
| sys::fs::OpenFlags Flags) |
| : Installer(Filename) { |
| if (isStdout(Filename)) { |
| OS = &outs(); |
| EC = std::error_code(); |
| return; |
| } |
| OSHolder.emplace(Filename, EC, Flags); |
| OS = OSHolder.getPointer(); |
| // If open fails, no cleanup is needed. |
| if (EC) |
| Installer.Keep = true; |
| } |
| |
| ToolOutputFile::ToolOutputFile(StringRef Filename, int FD) |
| : Installer(Filename) { |
| OSHolder.emplace(FD, true); |
| OS = OSHolder.getPointer(); |
| } |