Replace the BUILTIN_EXPECT macro with a less horrible LLVM_LIKELY/LLVM_UNLIKELY inter...

[oota-llvm.git] / include / llvm / Support / raw_ostream.h

diff --git a/include/llvm/Support/raw_ostream.h b/include/llvm/Support/raw_ostream.h
index 95904ea2f31eb00349dfc182ba408e200b7e0a18..9913f989fc9bf170ee042421d04572a405c87537 100644 (file)
--- a/include/llvm/Support/raw_ostream.h
+++ b/include/llvm/Support/raw_ostream.h
@@ -210,23 +210,32 @@ public:
 
   /// Changes the foreground color of text that will be output from this point
   /// forward.
-  /// @param colors ANSI color to use, the special SAVEDCOLOR can be used to
+  /// @param Color ANSI color to use, the special SAVEDCOLOR can be used to
   /// change only the bold attribute, and keep colors untouched
-  /// @param bold bold/brighter text, default false
-  /// @param bg if true change the background, default: change foreground
+  /// @param Bold bold/brighter text, default false
+  /// @param BG if true change the background, default: change foreground
   /// @returns itself so it can be used within << invocations
-  virtual raw_ostream &changeColor(enum Colors, bool = false, bool = false) {
-    return *this; }
+  virtual raw_ostream &changeColor(enum Colors Color,
+                                   bool Bold = false,
+                                   bool BG = false) {
+    return *this;
+  }
 
   /// Resets the colors to terminal defaults. Call this when you are done
   /// outputting colored text, or before program exit.
   virtual raw_ostream &resetColor() { return *this; }
 
+  /// Reverses the forground and background colors.
+  virtual raw_ostream &reverseColor() { return *this; }
+
   /// This function determines if this stream is connected to a "tty" or
   /// "console" window. That is, the output would be displayed to the user
   /// rather than being put on a pipe or stored in a file.
   virtual bool is_displayed() const { return false; }
 
+  /// This function determines if this stream is displayed and supports colors.
+  virtual bool has_colors() const { return is_displayed(); }
+
   //===--------------------------------------------------------------------===//
   // Subclass Interface
   //===--------------------------------------------------------------------===//
@@ -301,6 +310,10 @@ class raw_fd_ostream : public raw_ostream {
   ///
   bool Error;
 
+  /// Controls whether the stream should attempt to use atomic writes, when
+  /// possible.
+  bool UseAtomicWrites;
+
   uint64_t pos;
 
   /// write_impl - See raw_ostream::write_impl.
@@ -361,16 +374,30 @@ public:
   /// position to the offset specified from the beginning of the file.
   uint64_t seek(uint64_t off);
 
+  /// SetUseAtomicWrite - Set the stream to attempt to use atomic writes for
+  /// individual output routines where possible.
+  ///
+  /// Note that because raw_ostream's are typically buffered, this flag is only
+  /// sensible when used on unbuffered streams which will flush their output
+  /// immediately.
+  void SetUseAtomicWrites(bool Value) {
+    UseAtomicWrites = Value;
+  }
+
   virtual raw_ostream &changeColor(enum Colors colors, bool bold=false,
                                    bool bg=false);
   virtual raw_ostream &resetColor();
 
+  virtual raw_ostream &reverseColor();
+
   virtual bool is_displayed() const;
 
+  virtual bool has_colors() const;
+
   /// has_error - Return the value of the flag in this raw_fd_ostream indicating
   /// whether an output error has been encountered.
   /// This doesn't implicitly flush any pending output.  Also, it doesn't
-  /// guarantee to detect all errors unless the the stream has been closed.
+  /// guarantee to detect all errors unless the stream has been closed.
   bool has_error() const {
     return Error;
   }