annotate lib-src/make-dump-id.c @ 558:ed498ef2108b

[xemacs-hg @ 2001-05-23 09:59:33 by ben] xemacs.mak: call `ver' to get the exact os version and put it in the installation; suggestion from adrian. behavior-defs.el: Add scroll-in-place, jka-compr, efs, fix up some things. pop.c: Remove BROKEN_CYGWIN. etc\sample.init.el: Rewrite to be much more careful about loading features -- now it decays gracefully even in the complete absence of packages. Also avoid doing obnoxious things when loading efs. configure.in: add some support for eventually turning on file coding by default. Fix numerous places where AC_MSG_WARN had quotes around its arg, which is bad. Replace with []. Same for AC_MSG_ERROR. s\cygwin32.h, s\mingw32.h: remove support for way old beta versions of cygwin. don't put -Wno-sign-compare in the system switches; this isn't a system issue. define BROKEN_SIGIO for cygwin to get C-g support. device-msw.c: signal an error rather than crash with an unavailable network printer (from Mike Alexander). event-msw.c: cleanup headers. fix (hopefully) an error with data corruption when sending to a network connection. fileio.c: Fix evil code that attempts to handle the ~user prefix by (a) always assuming we're referencing ourselves and not even verifying the user -- hence any file with a tilde as its first char is invalid! (b) if there wasn't a slash following the filename, the pointer was set *past* the end of file and we started reading from uninitialized memory. Now we simply treat these as files, always. optionally for 21.4 (doc fix): lread.c: cambia de pas_de_lache_ici -- al minimo usa la palabra certa. frame.c: fix warnings. emacs.c, nt.c, ntproc.c, process-nt.c, realpath.c, unexnt.c: rename MAX_PATH to standard PATH_MAX. process-nt.c, realpath.c: cleanup headers. process-unix.c, sysdep.c, systime.h, syswindows.h: kill BROKEN_CYGWIN and support for way old beta versions of cygwin. sysfile.h: use _MAX_PATH (Windows) preferentially for PATH_MAX if defined. include io.h on Cygwin (we need get_osfhandle()). include sys/fcntl.h always, since we were including it in various header files anyway. unexcw.c: fix up style to conform to standard. remove duplicate definition of PERROR. buffer.c: comment change. database.c, debug.h, device-tty.c, dired-msw.c, glyphs-msw.c: header cleanups (remove places that directly include a system header file, because we have our own layer to do this more cleanly and portably); indentation fixes.
author ben
date Wed, 23 May 2001 09:59:48 +0000
parents 223736d75acb
children 8bae4d6cdd10
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1 /* Generate a unique dump-id for use with the portable dumper.
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2 Copyright (C) 2000 Olivier Galibert, Martin Buchholz
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 #include <config.h>
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22 #include <stdio.h>
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23 #include <stdlib.h>
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24 #include "../src/systime.h"
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25
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26 #ifdef WIN32_NATIVE
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27 #include <sys/timeb.h>
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28
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29 /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */
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30 void
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31 gettimeofday (struct timeval *tv, struct timezone *tz)
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32 {
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33 struct _timeb tb;
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34 _ftime (&tb);
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35
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36 tv->tv_sec = tb.time;
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37 tv->tv_usec = tb.millitm * 1000L;
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38 if (tz)
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39 {
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40 tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */
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41 tz->tz_dsttime = tb.dstflag; /* type of dst correction */
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42 }
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43 }
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44 #endif
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45
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46 /* Generates an (extremely) pseudo random number for the dump-id */
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47 static unsigned int
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48 generate_dump_id (void)
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49 {
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50 EMACS_TIME thyme;
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51 EMACS_GET_TIME (thyme);
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52
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53 return (unsigned int) (EMACS_SECS (thyme) ^ EMACS_USECS (thyme));
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54 }
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55
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56 int
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57 main (int argc, char *argv[])
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58 {
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59 FILE *f;
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60
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61 if ((f = fopen ("dump-id.c", "w")) == NULL)
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62 {
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63 perror ("open dump-id.c");
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64 return EXIT_FAILURE;
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65 }
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66
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67 fprintf (f, "unsigned int dump_id = %uU;\n", generate_dump_id ());
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68
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69 if ((fclose (f)) != 0)
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70 {
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71 perror ("close dump-id.c");
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72 return EXIT_FAILURE;
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73 }
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74
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75 return EXIT_SUCCESS;
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76 }