mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 03:33:20 +01:00
102 lines
3.9 KiB
C++
102 lines
3.9 KiB
C++
//===- llvm/Support/Debug.h - Easy way to add debug output ------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements a handy way of adding debugging information to your
|
|
// code, without it being enabled all of the time, and without having to add
|
|
// command line options to enable it.
|
|
//
|
|
// In particular, just wrap your code with the DEBUG() macro, and it will be
|
|
// enabled automatically if you specify '-debug' on the command-line.
|
|
// Alternatively, you can also use the SET_DEBUG_TYPE("foo") macro to specify
|
|
// that your debug code belongs to class "foo". Then, on the command line, you
|
|
// can specify '-debug-only=foo' to enable JUST the debug information for the
|
|
// foo class.
|
|
//
|
|
// When compiling without assertions, the -debug-* options and all code in
|
|
// DEBUG() statements disappears, so it does not effect the runtime of the code.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_SUPPORT_DEBUG_H
|
|
#define LLVM_SUPPORT_DEBUG_H
|
|
|
|
namespace llvm {
|
|
|
|
class raw_ostream;
|
|
|
|
/// 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
|
|
|
|
/// 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;
|
|
|
|
/// 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(dbgs() << "Bitset contains: " << Bitset << "\n");
|
|
//
|
|
#define DEBUG(X) DEBUG_WITH_TYPE(DEBUG_TYPE, X)
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|