Fatal Debug Output

Collaboration diagram for Fatal Debug Output:

Macros
#define	DoutFatal(cntrl, data)
	Macro for writing fatal debug output to the default debug object libcw_do .

Detailed Description

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Detailed Description

Often an application needs to be terminated when a fatal error occurs (whether or not CWDEBUG is defined).  Libcwd defines for these cases the macro DoutFatal.This allows you to write

if (error)
  DoutFatal(dc::core|error_cf, "An error occurred");

instead of the equivalent

if (error)
{
  Dout(dc::core|error_cf, "An error occurred");
  std::cerr << "An error occurred" << std::endl;
  exit(254);
}

The big difference with Dout is that DoutFatal is not replaced with white space when the macro CWDEBUG is not defined.There are two debug channels that can be used together with DoutFatal: dc::fatal and dc::core .  The first terminates by calling exit(254), the second terminates by raising SIGABORT, causing the application to core dump.

See also

Predefined Debug Channels
Control Flags
Defining your own debug objects