[Support/MemoryBuffer] Move the IsVolatile check inside shouldUseMmap() and make...

[oota-llvm.git] / lib / Support / DataStream.cpp

diff --git a/lib/Support/DataStream.cpp b/lib/Support/DataStream.cpp
index 3a38e2a66b437df7379b1a19a058c1d3b7be4ad4..eec858416a8f9145786f7703de3bac13c182797c 100644 (file)
--- a/lib/Support/DataStream.cpp
+++ b/lib/Support/DataStream.cpp
@@ -14,22 +14,23 @@
 //
 //===----------------------------------------------------------------------===//
 
-#define DEBUG_TYPE "Data-stream"
-#include "llvm/ADT/Statistic.h"
 #include "llvm/Support/DataStream.h"
+#include "llvm/ADT/Statistic.h"
+#include "llvm/Support/FileSystem.h"
 #include "llvm/Support/Program.h"
 #include "llvm/Support/system_error.h"
-#include <string>
 #include <cerrno>
 #include <cstdio>
+#include <string>
 #if !defined(_MSC_VER) && !defined(__MINGW32__)
 #include <unistd.h>
 #else
 #include <io.h>
 #endif
-#include <fcntl.h>
 using namespace llvm;
 
+#define DEBUG_TYPE "Data-stream"
+
 // Interface goals:
 // * StreamableMemoryObject doesn't care about complexities like using
 //   threads/async callbacks to actually overlap download+compile
@@ -58,7 +59,7 @@ public:
   virtual ~DataFileStreamer() {
     close(Fd);
   }
-  virtual size_t GetBytes(unsigned char *buf, size_t len) LLVM_OVERRIDE {
+  size_t GetBytes(unsigned char *buf, size_t len) override {
     NumStreamFetches++;
     return read(Fd, buf, len);
   }
@@ -66,18 +67,11 @@ public:
   error_code OpenFile(const std::string &Filename) {
     if (Filename == "-") {
       Fd = 0;
-      sys::Program::ChangeStdinToBinary();
+      sys::ChangeStdinToBinary();
       return error_code::success();
     }
-  
-    int OpenFlags = O_RDONLY;
-#ifdef O_BINARY
-    OpenFlags |= O_BINARY;  // Open input file in binary mode on win32.
-#endif
-    Fd = ::open(Filename.c_str(), OpenFlags);
-    if (Fd == -1)
-      return error_code(errno, posix_category());
-    return error_code::success();
+
+    return sys::fs::openFileForRead(Filename, Fd);
   }
 };
 
@@ -90,7 +84,7 @@ DataStreamer *getDataFileStreamer(const std::string &Filename,
   if (error_code e = s->OpenFile(Filename)) {
     *StrError = std::string("Could not open ") + Filename + ": " +
         e.message() + "\n";
-    return NULL;
+    return nullptr;
   }
   return s;
 }