DirectXShaderCompiler/lib/Support/ToolOutputFile.cpp at main · microsoft/DirectXShaderCompiler · GitHub

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//===--- ToolOutputFile.cpp - Implement the tool_output_file class --------===//

// The LLVM Compiler Infrastructure

// This file is distributed under the University of Illinois Open Source

// License. See LICENSE.TXT for details.

//===----------------------------------------------------------------------===//

// This implements the tool_output_file class.

//===----------------------------------------------------------------------===//

#include "llvm/Support/ToolOutputFile.h"

#include "llvm/Support/FileSystem.h"

#include "llvm/Support/Signals.h"

using namespace llvm;

tool_output_file::CleanupInstaller::CleanupInstaller(StringRef Filename)

: Filename(Filename), Keep(false) {

// Arrange for the file to be deleted if the process is killed.

if (Filename != "-")

sys::RemoveFileOnSignal(Filename);

}

tool_output_file::CleanupInstaller::~CleanupInstaller() {

// Delete the file if the client hasn't told us not to.

if (!Keep && Filename != "-")

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.

if (Filename != "-")

sys::DontRemoveFileOnSignal(Filename);

}

tool_output_file::tool_output_file(StringRef Filename, std::error_code &EC,

sys::fs::OpenFlags Flags)

: Installer(Filename), OS(Filename, EC, Flags) {

// If open fails, no cleanup is needed.

if (EC)

Installer.Keep = true;

}

tool_output_file::tool_output_file(StringRef Filename, int FD)

: Installer(Filename), OS(FD, true) {}

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