benchmarks/unixbench-5.1.2/src/timeit.c

   1 /*******************************************************************************
   2  *
   3  *  The BYTE UNIX Benchmarks - Release 3
   4  *          Module: timeit.c   SID: 3.3 5/15/91 19:30:21
   5  *******************************************************************************
   6  * Bug reports, patches, comments, suggestions should be sent to:
   7  *
   8  *      Ben Smith, Rick Grehan or Tom Yager
   9  *      ben@bytepb.byte.com   rick_g@bytepb.byte.com   tyager@bytepb.byte.com
  10  *
  11  *******************************************************************************
  12  *  Modification Log:
  13  *  May 12, 1989 - modified empty loops to avoid nullifying by optimizing
  14  *                 compilers
  15  *  August 28, 1990 - changed timing relationship--now returns total number
  16  *                        of iterations (ty)
  17  *  October 22, 1997 - code cleanup to remove ANSI C compiler warnings
  18  *                     Andy Kahn <kahn@zk3.dec.com>
  19  *
  20  ******************************************************************************/
  21
  22 /* this module is #included in other modules--no separate SCCS ID */
  23
  24 /*
  25  *  Timing routine
  26  *
  27  */
  28
  29 #include <signal.h>
  30 #include <unistd.h>
  31
  32 void wake_me(int seconds, void (*func)(int))
  33 {
  34         /* set up the signal handler */
  35         signal(SIGALRM, func);
  36         /* get the clock running */
  37         alarm(seconds);
  38 }
  39