contrib/bind-9.5.2/lib/bind/bsd/gettimeofday.c

   1 #ifndef LINT
   2 static const char rcsid[] = "$Id: gettimeofday.c,v 1.4 2005/04/27 04:56:11 sra Exp $";
   3 #endif
   4
   5 #include "port_before.h"
   6 #include <stdio.h>
   7 #include <syslog.h>
   8 #include <sys/time.h>
   9 #include "port_after.h"
  10
  11 #if !defined(NEED_GETTIMEOFDAY)
  12 /*%
  13  * gettimeofday() occasionally returns invalid tv_usec on some platforms.
  14  */
  15 #define MILLION 1000000
  16 #undef gettimeofday
  17
  18 int
  19 isc__gettimeofday(struct timeval *tp, struct timezone *tzp) {
  20         int res;
  21
  22         res = gettimeofday(tp, tzp);
  23         if (res < 0)
  24                 return (res);
  25         if (tp == NULL)
  26                 return (res);
  27         if (tp->tv_usec < 0) {
  28                 do {
  29                         tp->tv_usec += MILLION;
  30                         tp->tv_sec--;
  31                 } while (tp->tv_usec < 0);
  32                 goto log;
  33         } else if (tp->tv_usec > MILLION) {
  34                 do {
  35                         tp->tv_usec -= MILLION;
  36                         tp->tv_sec++;
  37                 } while (tp->tv_usec > MILLION);
  38                 goto log;
  39         }
  40         return (res);
  41  log:
  42         syslog(LOG_ERR, "gettimeofday: tv_usec out of range\n");
  43         return (res);
  44 }
  45 #else
  46 int
  47 gettimeofday(struct timeval *tvp, struct _TIMEZONE *tzp) {
  48         time_t clock, time(time_t *);
  49
  50         if (time(&clock) == (time_t) -1)
  51                 return (-1);
  52         if (tvp) {
  53                 tvp->tv_sec = clock;
  54                 tvp->tv_usec = 0;
  55         }
  56         if (tzp) {
  57                 tzp->tz_minuteswest = 0;
  58                 tzp->tz_dsttime = 0;
  59         }
  60         return (0);
  61 }
  62 #endif /*NEED_GETTIMEOFDAY*/
  63
  64 /*! \file */