Imported Upstream version 5.18.0.179

Former-commit-id: 67aa10e65b237e1c4537630979ee99ebe1374215

external/llvm/lib/Support/ToolOutputFile.cpp

@@ -0,0 +1,46 @@
+//===--- ToolOutputFile.cpp - Implement the ToolOutputFile 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 ToolOutputFile class.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/ToolOutputFile.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/Signals.h"
+using namespace llvm;
+
+ToolOutputFile::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);
+}
+
+ToolOutputFile::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);
+}
+
+ToolOutputFile::ToolOutputFile(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;
+}
+
+ToolOutputFile::ToolOutputFile(StringRef Filename, int FD)
+    : Installer(Filename), OS(FD, true) {}