nsprpub/config/now.c

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
   9  *
  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is the Netscape Portable Runtime (NSPR).
  16  *
  17  * The Initial Developer of the Original Code is
  18  * Netscape Communications Corporation.
  19  * Portions created by the Initial Developer are Copyright (C) 1998-2000
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *
  24  * Alternatively, the contents of this file may be used under the terms of
  25  * either the GNU General Public License Version 2 or later (the "GPL"), or
  26  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  27  * in which case the provisions of the GPL or the LGPL are applicable instead
  28  * of those above. If you wish to allow use of your version of this file only
  29  * under the terms of either the GPL or the LGPL, and not to allow others to
  30  * use your version of this file under the terms of the MPL, indicate your
  31  * decision by deleting the provisions above and replace them with the notice
  32  * and other provisions required by the GPL or the LGPL. If you do not delete
  33  * the provisions above, a recipient may use your version of this file under
  34  * the terms of any one of the MPL, the GPL or the LGPL.
  35  *
  36  * ***** END LICENSE BLOCK ***** */
  37
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40
  41 #if defined(VMS)
  42 #include <sys/timeb.h>
  43 #elif defined(XP_UNIX) || defined(XP_OS2) || defined(XP_BEOS)
  44 #include <sys/time.h>
  45 #elif defined(_WIN32)
  46 #include <windows.h>
  47 #else
  48 #error "Architecture not supported"
  49 #endif
  50
  51
  52 int main(int argc, char **argv)
  53 {
  54 #if defined(OMIT_LIB_BUILD_TIME)
  55     /*
  56      * Some platforms don't have any 64-bit integer type
  57      * such as 'long long'.  Because we can't use NSPR's
  58      * PR_snprintf in this program, it is difficult to
  59      * print a static initializer for PRInt64 (a struct).
  60      * So we print nothing.  The makefiles that build the
  61      * shared libraries will detect the empty output string
  62      * of this program and omit the library build time
  63      * in PRVersionDescription.
  64      */
  65 #elif defined(VMS)
  66     long long now;
  67     struct timeb b;
  68     ftime(&b);
  69     now = b.time;
  70     now *= 1000000;
  71     now += (1000 * b.millitm);
  72     fprintf(stdout, "%Ld", now);
  73 #elif defined(XP_UNIX) || defined(XP_OS2) || defined(XP_BEOS)
  74     long long now;
  75     struct timeval tv;
  76 #ifdef HAVE_SVID_GETTOD
  77     gettimeofday(&tv);
  78 #else
  79     gettimeofday(&tv, NULL);
  80 #endif
  81     now = ((1000000LL) * tv.tv_sec) + (long long)tv.tv_usec;
  82 #if defined(OSF1)
  83     fprintf(stdout, "%ld", now);
  84 #elif defined(BEOS) && defined(__POWERPC__)
  85     fprintf(stdout, "%Ld", now);  /* Metroworks on BeOS PPC */
  86 #else
  87     fprintf(stdout, "%lld", now);
  88 #endif
  89
  90 #elif defined(_WIN32)
  91     __int64 now;
  92     FILETIME ft;
  93     GetSystemTimeAsFileTime(&ft);
  94     CopyMemory(&now, &ft, sizeof(now));
  95     /*
  96      * 116444736000000000 is the number of 100-nanosecond intervals
  97      * between Jan. 1, 1601 and Jan. 1, 1970.
  98      */
  99 #ifdef __GNUC__
 100     now = (now - 116444736000000000LL) / 10LL;
 101     fprintf(stdout, "%lld", now);
 102 #else
 103     now = (now - 116444736000000000i64) / 10i64;
 104     fprintf(stdout, "%I64d", now);
 105 #endif
 106
 107 #else
 108 #error "Architecture not supported"
 109 #endif
 110
 111     return 0;
 112 }  /* main */
 113
 114 /* now.c */