workbench/network/stacks/AROSTCP/netlib/sleep.c

   1 /* $Id$
   2  *
   3  *      sleep.c - suspend process for the specified time
   4  *
   5  *      Copyright © 1994 AmiTCP/IP Group,
   6  *                       Network Solutions Development Inc.
   7  *                       All rights reserved.
   8  */
   9
  10 #include <sys/param.h>
  11 #include <unistd.h>
  12 #include <sys/time.h>
  13 #include <sys/socket.h>
  14
  15 /****** net.lib/sleep *********************************************
  16
  17     NAME
  18         sleep - suspend process execution for the specified time
  19
  20     SYNOPSIS
  21         void sleep(unsigned int seconds);
  22
  23     FUNCTION
  24         Process execution is suspended for number of seconds specified in
  25         'seconds'. The sleep will be aborted if any of the break signals
  26         specified for the process is received (only CTRL-C by default).
  27
  28     PORTABILITY
  29         UNIX
  30
  31     INPUTS
  32         'seconds' - number of seconds to sleep.
  33
  34     RESULT
  35         Does not return a value.
  36
  37     NOTES
  38         The sleep is implemented as a single select() call with all other
  39         than time out argument as NULL.
  40
  41     SEE ALSO
  42         bsdsocket.library/select()
  43
  44 *****************************************************************************
  45 *
  46 */
  47
  48 void sleep(unsigned int secs)
  49 {
  50   struct timeval tv;
  51
  52   tv.tv_sec = secs;
  53   tv.tv_usec = 0;
  54   select(0, 0, 0, 0, &tv);
  55 }