namespace llvm {
-// DebugFlag - This boolean is set to true if the '-debug' command line option
-// is specified. This should probably not be referenced directly, instead, use
-// the DEBUG macro below.
-//
-#ifndef NDEBUG
-extern bool DebugFlag;
-#endif
+class raw_ostream;
-// isCurrentDebugType - Return true if the specified string is the debug type
-// specified on the command line, or if none was specified on the command line
-// with the -debug-only=X option.
-//
+/// DEBUG_TYPE macro - Files can specify a DEBUG_TYPE as a string, which causes
+/// all of their DEBUG statements to be activatable with -debug-only=thatstring.
+#ifndef DEBUG_TYPE
+#define DEBUG_TYPE ""
+#endif
+
#ifndef NDEBUG
+/// DebugFlag - This boolean is set to true if the '-debug' command line option
+/// is specified. This should probably not be referenced directly, instead, use
+/// the DEBUG macro below.
+///
+extern bool DebugFlag;
+
+/// isCurrentDebugType - Return true if the specified string is the debug type
+/// specified on the command line, or if none was specified on the command line
+/// with the -debug-only=X option.
+///
bool isCurrentDebugType(const char *Type);
+
+/// SetCurrentDebugType - Set the current debug type, as if the -debug-only=X
+/// option were specified. Note that DebugFlag also needs to be set to true for
+/// debug output to be produced.
+///
+void SetCurrentDebugType(const char *Type);
+
+/// DEBUG_WITH_TYPE macro - This macro should be used by passes to emit debug
+/// information. In the '-debug' option is specified on the commandline, and if
+/// this is a debug build, then the code specified as the option to the macro
+/// will be executed. Otherwise it will not be. Example:
+///
+/// DEBUG_WITH_TYPE("bitset", dbgs() << "Bitset contains: " << Bitset << "\n");
+///
+/// This will emit the debug information if -debug is present, and -debug-only
+/// is not specified, or is specified as "bitset".
+#define DEBUG_WITH_TYPE(TYPE, X) \
+ do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType(TYPE)) { X; } \
+ } while (0)
+
#else
#define isCurrentDebugType(X) (false)
+#define SetCurrentDebugType(X)
+#define DEBUG_WITH_TYPE(TYPE, X) do { } while (0)
#endif
-// DEBUG_WITH_TYPE macro - This macro should be used by passes to emit debug
-// information. In the '-debug' option is specified on the commandline, and if
-// this is a debug build, then the code specified as the option to the macro
-// will be executed. Otherwise it will not be. Example:
-//
-// DEBUG_WITH_TYPE("bitset", errs() << "Bitset contains: " << Bitset << "\n");
-//
-// This will emit the debug information if -debug is present, and -debug-only is
-// not specified, or is specified as "bitset".
+/// EnableDebugBuffering - This defaults to false. If true, the debug
+/// stream will install signal handlers to dump any buffered debug
+/// output. It allows clients to selectively allow the debug stream
+/// to install signal handlers if they are certain there will be no
+/// conflict.
+///
+extern bool EnableDebugBuffering;
-#ifdef NDEBUG
-#define DEBUG_WITH_TYPE(TYPE, X) do { } while (0)
-#else
-#define DEBUG_WITH_TYPE(TYPE, X) \
- do { if (DebugFlag && isCurrentDebugType(TYPE)) { X; } } while (0)
-#endif
+/// dbgs() - This returns a reference to a raw_ostream for debugging
+/// messages. If debugging is disabled it returns errs(). Use it
+/// like: dbgs() << "foo" << "bar";
+raw_ostream &dbgs();
// DEBUG macro - This macro should be used by passes to emit debug information.
// In the '-debug' option is specified on the commandline, and if this is a
// debug build, then the code specified as the option to the macro will be
// executed. Otherwise it will not be. Example:
//
-// DEBUG(errs() << "Bitset contains: " << Bitset << "\n");
+// DEBUG(dbgs() << "Bitset contains: " << Bitset << "\n");
//
-
-#ifndef DEBUG_TYPE
-#define DEBUG_TYPE ""
-#endif
-
#define DEBUG(X) DEBUG_WITH_TYPE(DEBUG_TYPE, X)
-
+
} // End llvm namespace
#endif