From 8ee23f00c7e9343d09313051c318906558d6ad17 Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Tue, 18 Jun 2013 17:01:00 +0000
Subject: [PATCH] Add a version of unique_file that return just the file name.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184206 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/Support/FileSystem.h  |  4 ++++
 lib/Support/PathV2.cpp             | 13 ++++++++++++-
 tools/bugpoint/ExecutionDriver.cpp | 10 +---------
 tools/bugpoint/OptimizerDriver.cpp | 12 ++----------
 4 files changed, 19 insertions(+), 20 deletions(-)

diff --git a/include/llvm/Support/FileSystem.h b/include/llvm/Support/FileSystem.h
index 79f85539c03..11c78cc9394 100644
--- a/include/llvm/Support/FileSystem.h
+++ b/include/llvm/Support/FileSystem.h
@@ -509,6 +509,10 @@ error_code unique_file(const Twine &model, int &result_fd,
                        SmallVectorImpl<char> &result_path,
                        bool makeAbsolute = true, unsigned mode = 0600);
 
+/// @brief Simpler version for clients that don't want an open file.
+error_code unique_file(const Twine &Model, SmallVectorImpl<char> &ResultPath,
+                       bool MakeAbsolute = true, unsigned Mode = 0600);
+
 /// @brief Canonicalize path.
 ///
 /// Sets result to the file system's idea of what path is. The result is always
diff --git a/lib/Support/PathV2.cpp b/lib/Support/PathV2.cpp
index 05366202559..0e02953c549 100644
--- a/lib/Support/PathV2.cpp
+++ b/lib/Support/PathV2.cpp
@@ -18,8 +18,11 @@
 #include <cctype>
 #include <cstdio>
 #include <cstring>
-#ifdef __APPLE__
+
+#if !defined(_MSC_VER) && !defined(__MINGW32__)
 #include <unistd.h>
+#else
+#include <io.h>
 #endif
 
 namespace {
@@ -622,6 +625,14 @@ bool is_relative(const Twine &path) {
 
 namespace fs {
 
+error_code unique_file(const Twine &Model, SmallVectorImpl<char> &ResultPath,
+                       bool MakeAbsolute, unsigned Mode) {
+  int FD;
+  error_code Ret = unique_file(Model, FD, ResultPath, MakeAbsolute, Mode);
+  close(FD);
+  return Ret;
+}
+
 error_code make_absolute(SmallVectorImpl<char> &path) {
   StringRef p(path.data(), path.size());
 
diff --git a/tools/bugpoint/ExecutionDriver.cpp b/tools/bugpoint/ExecutionDriver.cpp
index 53908081287..6edf2335f6c 100644
--- a/tools/bugpoint/ExecutionDriver.cpp
+++ b/tools/bugpoint/ExecutionDriver.cpp
@@ -21,12 +21,6 @@
 #include "llvm/Support/raw_ostream.h"
 #include <fstream>
 
-#if !defined(_MSC_VER) && !defined(__MINGW32__)
-#include <unistd.h>
-#else
-#include <io.h>
-#endif
-
 using namespace llvm;
 
 namespace {
@@ -338,15 +332,13 @@ std::string BugDriver::executeProgram(const Module *Program,
 
   // Check to see if this is a valid output filename...
   SmallString<128> UniqueFile;
-  int UniqueFD;
-  error_code EC = sys::fs::unique_file(OutputFile, UniqueFD, UniqueFile);
+  error_code EC = sys::fs::unique_file(OutputFile, UniqueFile);
   if (EC) {
     errs() << ToolName << ": Error making unique filename: "
            << EC.message() << "\n";
     exit(1);
   }
   OutputFile = UniqueFile.str();
-  close(UniqueFD);
 
   // Figure out which shared objects to run, if any.
   std::vector<std::string> SharedObjs(AdditionalSOs);
diff --git a/tools/bugpoint/OptimizerDriver.cpp b/tools/bugpoint/OptimizerDriver.cpp
index 3af551f43dd..43f2d3318ae 100644
--- a/tools/bugpoint/OptimizerDriver.cpp
+++ b/tools/bugpoint/OptimizerDriver.cpp
@@ -34,12 +34,6 @@
 
 #include <fstream>
 
-#if !defined(_MSC_VER) && !defined(__MINGW32__)
-#include <unistd.h>
-#else
-#include <io.h>
-#endif
-
 using namespace llvm;
 
 namespace llvm {
@@ -130,16 +124,14 @@ bool BugDriver::runPasses(Module *Program,
   // setup the output file name
   outs().flush();
   SmallString<128> UniqueFilename;
-  int UniqueFD;
-  error_code EC = sys::fs::unique_file(OutputPrefix + "-output-%%%%%%%.bc",
-                                       UniqueFD, UniqueFilename);
+  error_code EC =
+      sys::fs::unique_file(OutputPrefix + "-output-%%%%%%%.bc", UniqueFilename);
   if (EC) {
     errs() << getToolName() << ": Error making unique filename: "
            << EC.message() << "\n";
     return 1;
   }
   OutputFilename = UniqueFilename.str();
-  close(UniqueFD); // We only want the filename.
 
   // set up the input file name
   SmallString<128> InputFilename;