view lib-src/make-dump-id.c @ 1648:712931b4b71d

[xemacs-hg @ 2003-08-27 18:06:54 by youngs] 2003-08-28 Steve Youngs <youngs@xemacs.org> * README.packages: Update. 2003-08-28 Steve Youngs <youngs@xemacs.org> * PACKAGES: Update. 2003-08-28 Steve Youngs <youngs@xemacs.org> * xemacs-faq.texi (Q2.0.2): Rewrite, mentioning the correct way to remove a package. (Q3.8.2): big-menubar is in the edit-utils package. (Q4.3.2): Add a comment about not needing TM for things like Gnus, MH-E and VM. (Q5.3.3): State correct location of ps-print.el. * xemacs/packages.texi (Packages): Remove "Creating Packages" menu entry. (Package Terminology): Whitespace clean up. (Installing Packages): Whitespace clean up and add some @code formatters. Re-organise the menu so that installation via PUI is first and Sumo is last. (Automatically): mule-base is no longer a requirement for using PUI. Mention optionally requiring mailcrypt. (Note): Removed. (Manually): Move to below the PUI installation method. (Sumo): Move to below the manual installation method. (Which Packages): Add mailcrypt. (Building Packages): Remove duplicated stuff that is in lispref/packaging.texi, xref to it instead. (Local.rules File): xref to the appropriate node in lispref/packaging.texi. (Available Packages): Update to current reality. (all): Removed. (srckit): Removed. (binkit): Removed. * xemacs/reading.texi (Reading Mail): Mention Gnus and MEW. * new-users-guide/custom2.texi (Init File): big-menubar.el is in the edit-utils package. * lispref/packaging.texi (Packaging): (The User View): (The Library Maintainer View): (Infrastructure): (Control Files): (Obtaining): (The Package Release Engineer View): (Package Terminology): (Building Packages): (Makefile Targets): (packages): New. (Local.rules File): (XEMACS_PACKAGES): Removed. (XEMACS_INSTALLED_PACKAGES_ROOT): New. (NONMULE_PACKAGES): New. (EXCLUDES): New. (Creating Packages): (BATCH): New. (VERSION): Removed. (AUTHOR_VERSION): Removed. (MAINTAINER): Removed. (PACKAGE): Removed. (PKG_TYPE): Removed. (REQUIRES): Removed. (CATEGORY): Removed. (ELS): Removed. (ELCS): Removed. (all): Removed. (srckit): Removed. (binkit): Removed. (are): New. (STANDARD_DOCS): New. (ELCS_1_DEST): New. (example): New. (PACKAGE_SUPPRESS): New. (EXPLICIT_DOCS): New. (DATA_DEST): New. (Documenting Packages): Not quite a total rewrite, but a fairly thorough audit nonetheless.
author youngs
date Wed, 27 Aug 2003 18:07:10 +0000
parents 223736d75acb
children 8bae4d6cdd10
line wrap: on
line source

/* 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;
}