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1 //===--- ToolOutputFile.cpp - Implement the tool_output_file class --------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This implements the tool_output_file class.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "llvm/Support/ToolOutputFile.h"
15 #include "llvm/Support/FileSystem.h"
16 #include "llvm/Support/Signals.h"
17 using namespace llvm;
18 
CleanupInstaller(StringRef Filename)19 tool_output_file::CleanupInstaller::CleanupInstaller(StringRef Filename)
20     : Filename(Filename), Keep(false) {
21   // Arrange for the file to be deleted if the process is killed.
22   if (Filename != "-")
23     sys::RemoveFileOnSignal(Filename);
24 }
25 
~CleanupInstaller()26 tool_output_file::CleanupInstaller::~CleanupInstaller() {
27   // Delete the file if the client hasn't told us not to.
28   if (!Keep && Filename != "-")
29     sys::fs::remove(Filename);
30 
31   // Ok, the file is successfully written and closed, or deleted. There's no
32   // further need to clean it up on signals.
33   if (Filename != "-")
34     sys::DontRemoveFileOnSignal(Filename);
35 }
36 
tool_output_file(StringRef Filename,std::error_code & EC,sys::fs::OpenFlags Flags)37 tool_output_file::tool_output_file(StringRef Filename, std::error_code &EC,
38                                    sys::fs::OpenFlags Flags)
39     : Installer(Filename), OS(Filename, EC, Flags) {
40   // If open fails, no cleanup is needed.
41   if (EC)
42     Installer.Keep = true;
43 }
44 
tool_output_file(StringRef Filename,int FD)45 tool_output_file::tool_output_file(StringRef Filename, int FD)
46     : Installer(Filename), OS(FD, true) {}
47