c_cpp/etc/calc/have_rusage.c

   1 /*
   2  * have_rusage - Determine if we have getrusage()
   3  *
   4  * Copyright (C) 1999  Landon Curt Noll
   5  *
   6  * Calc is open software; you can redistribute it and/or modify it under
   7  * the terms of the version 2.1 of the GNU Lesser General Public License
   8  * as published by the Free Software Foundation.
   9  *
  10  * Calc is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  12  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General
  13  * Public License for more details.
  14  *
  15  * A copy of version 2.1 of the GNU Lesser General Public License is
  16  * distributed with calc under the filename COPYING-LGPL.  You should have
  17  * received a copy with calc; if not, write to Free Software Foundation, Inc.
  18  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  19  *
  20  * @(#) $Revision: 30.1 $
  21  * @(#) $Id: have_rusage.c,v 30.1 2007/03/16 11:09:46 chongo Exp $
  22  * @(#) $Source: /usr/local/src/bin/calc/RCS/have_rusage.c,v $
  23  *
  24  * Under source code control:   1999/11/05 11:28:15
  25  * File existed as early as:    1999
  26  *
  27  * chongo <was here> /\oo/\     http://www.isthe.com/chongo/
  28  * Share and enjoy!  :-)        http://www.isthe.com/chongo/tech/comp/calc/
  29  */
  30
  31 /*
  32  * usage:
  33  *      have_rusage
  34  *
  35  * Not all systems have the getrusage() function, so this may not
  36  * compile on your system.
  37  *
  38  * This prog outputs several defines:
  39  *
  40  *      HAVE_GETRUSAGE
  41  *              defined ==> use getrusage()
  42  *              undefined ==> do not call or cannot call getrusage()
  43  */
  44
  45
  46 #include <sys/time.h>
  47 #include <sys/resource.h>
  48
  49 int
  50 main(void)
  51 {
  52 #if defined(HAVE_NO_GETRUSAGE)
  53
  54         printf("#undef HAVE_GETRUSAGE /* no */\n");
  55
  56 #else /* HAVE_NO_GETRUSAGE */
  57
  58         struct rusage rusage;           /* resource utilization */
  59
  60         (void) getrusage(RUSAGE_SELF, &rusage);
  61
  62         printf("#define HAVE_GETRUSAGE /* yes */\n");
  63
  64 #endif /* HAVE_NO_GETRUSAGE */
  65
  66         /* exit(0); */
  67         return 0;
  68 }