lib/Support/ToolOutputFile.cpp

   1 //===--- ToolOutputFile.cpp - Implement the ToolOutputFile 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 ToolOutputFile 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
  19 ToolOutputFile::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
  26 ToolOutputFile::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
  37 ToolOutputFile::ToolOutputFile(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
  45 ToolOutputFile::ToolOutputFile(StringRef Filename, int FD)
  46     : Installer(Filename), OS(FD, true) {}