lib/Support/ToolOutputFile.cpp

   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/System/Signals.h"
  16 using namespace llvm;
  17
  18 tool_output_file::CleanupInstaller::CleanupInstaller(const char *filename)
  19   : Filename(filename), Keep(false) {
  20   // Arrange for the file to be deleted if the process is killed.
  21   if (Filename != "-")
  22     sys::RemoveFileOnSignal(sys::Path(Filename));
  23 }
  24
  25 tool_output_file::CleanupInstaller::~CleanupInstaller() {
  26   // Delete the file if the client hasn't told us not to.
  27   if (!Keep && Filename != "-")
  28     sys::Path(Filename).eraseFromDisk();
  29
  30   // Ok, the file is successfully written and closed, or deleted. There's no
  31   // further need to clean it up on signals.
  32   if (Filename != "-")
  33     sys::DontRemoveFileOnSignal(sys::Path(Filename));
  34 }
  35
  36 tool_output_file::tool_output_file(const char *filename, std::string &ErrorInfo,
  37                                    unsigned Flags)
  38   : Installer(filename),
  39     OS(filename, ErrorInfo, Flags) {
  40   // If open fails, no cleanup is needed.
  41   if (!ErrorInfo.empty())
  42     Installer.Keep = true;
  43 }