/* 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 3 of the License, 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. If not, see . */
#include
#include
#include
#include "../src/systime.h"
#ifdef WIN32_NATIVE
#include
/* 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;
}
/* dump_id is declared as extern "C" in dumper.h */
fputs ("extern\n", f);
fputs ("#ifdef __cplusplus\n", f);
fputs ("\"C\"\n", f);
fputs ("#endif\n", f);
fputs ("unsigned int dump_id;\n", f);
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;
}