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/* Generate a unique dump-id for use with the portable dumper.
Copyright (C) 2000 Olivier Galibert, Martin Buchholz
This file is part of XEmacs.
XEmacs is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
XEmacs is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with XEmacs; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include "../src/systime.h"
#ifdef WIN32_NATIVE
#include <sys/timeb.h>
/* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */
void
gettimeofday (struct timeval *tv, struct timezone *tz)
{
struct _timeb tb;
_ftime (&tb);
tv->tv_sec = tb.time;
tv->tv_usec = tb.millitm * 1000L;
if (tz)
{
tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */
tz->tz_dsttime = tb.dstflag; /* type of dst correction */
}
}
#endif
/* Generates an (extremely) pseudo random number for the dump-id */
static unsigned int
generate_dump_id (void)
{
EMACS_TIME thyme;
EMACS_GET_TIME (thyme);
return (unsigned int) (EMACS_SECS (thyme) ^ EMACS_USECS (thyme));
}
int
main (int argc, char *argv[])
{
FILE *f;
if ((f = fopen ("dump-id.c", "w")) == NULL)
{
perror ("open dump-id.c");
return EXIT_FAILURE;
}
fprintf (f, "unsigned int dump_id = %uU;\n", generate_dump_id ());
if ((fclose (f)) != 0)
{
perror ("close dump-id.c");
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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