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// error_exit.cc -- print an error message and exit (= CCTK_VWarn() wrapper)
// $Header$
//
// error_exit -- print an error message and exit (= CCTK_VWarn() wrapper)
//
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#ifdef STANDALONE_TEST
#include "fake_cctk.h"
#else
#include "cctk.h"
#endif
#include "config.h"
#include "stdc.h"
// everything in this file is inside these namespaces
namespace AHFinderDirect
{
namespace jtutil
{
//******************************************************************************
//
// This function prints an error message (formatted via vfprintf(3S)),
// then exits. It does *not* return to its caller.
#ifdef STANDALONE_TEST
// The exit is done via either exit() (for ERROR_EXIT) or abort()
// (for PANIC_EXIT).
#else
// The exit is done via CCTK_VWarn() with the caller-supplied
// "message level" argument; if this is one of
// ERROR_EXIT
// PANIC_EXIT
// defined in "stdc.h", then the CCTK_VWarn() call itself will terminate
// the Cactus run; if not we do an abort() .
#endif
//
// Despite not actually returning, this function is declared as returning
// an int , so it may be easily used in conditional expressions like
// foo = bar_ok ? baz(bar) : error_exit(...);
//
// Usage:
// error_exit(exit_code, message, args...)
//
// Arguments:
// msg_level = (in) The "message level" for CCTK_VWarn() .
// format = (in) vprintf(3S) format string for error message to be printed.
// args... = (in) Any additional arguments are (presumably) used in formatting
// the error message string.
//
/*VARARGS*/
int error_exit(int msg_level, const char *format, ...)
{
const int N_buffer = 2000;
char buffer[N_buffer];
va_list ap;
va_start(ap, format);
// FIXME: We should really do something if msg was truncated due to
// overflowing the buffer. But what to do?
vsnprintf(buffer, N_buffer, format, ap);
va_end(ap);
// delete trailing '\n' if present, since CCTK_VWarn() doesn't like this
const int len = strlen(buffer);
if ((len > 0) && (buffer[len-1] == '\n'))
then buffer[len-1] = '\0';
#ifdef STANDALONE_TEST
fprintf(stderr, "%s\n", buffer);
if (msg_level == PANIC_EXIT)
then abort();
else exit(msg_level);
#else
CCTK_VWarn(msg_level, __LINE__, __FILE__, CCTK_THORNSTRING, "%s", buffer);
#endif
// if we got here, evidently msg_level wasn't drastic enough
abort(); /*NOTREACHED*/
}
//******************************************************************************
} // namespace jtutil
} // namespace AHFinderDirect
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