usr/src/cmd/sgs/libconv/common/time.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #include        <sys/time.h>
  28 #include        <string.h>
  29 #include        <stdio.h>
  30 #include        "_conv.h"
  31 #include        "time_msg.h"
  32
  33 /*
  34  * Translate a struct timeval into a string appropriate for ld(1) and ld.so.1(1)
  35  * diagnostics.
  36  */
  37 const char *
  38 conv_time(struct timeval *oldtime, struct timeval *newtime,
  39     Conv_time_buf_t *time_buf)
  40 {
  41         int             hour, min;
  42         time_t          sec;
  43         suseconds_t     usec;
  44
  45         sec = newtime->tv_sec - oldtime->tv_sec;
  46         if (newtime->tv_usec >= oldtime->tv_usec)
  47                 usec = newtime->tv_usec - oldtime->tv_usec;
  48         else {
  49                 usec = (newtime->tv_usec + MICROSEC) - oldtime->tv_usec;
  50                 sec -= 1;
  51         }
  52
  53         /*
  54          * The default display is "sec.fraction", but ld(1) has been know to
  55          * ascend into minutes, and in worst case scenarios, hours.
  56          */
  57         if ((min = sec / 60) != 0)
  58                 sec = sec % 60;
  59         if ((hour = min / 60) != 0)
  60                 min = min % 60;
  61
  62         if (hour)
  63                 (void) snprintf(time_buf->buf, sizeof (time_buf->buf),
  64                     MSG_ORIG(MSG_TIME_HMSF), hour, min, sec, usec);
  65         else if (min)
  66                 (void) snprintf(time_buf->buf, sizeof (time_buf->buf),
  67                     MSG_ORIG(MSG_TIME_MSF), min, sec, usec);
  68         else
  69                 (void) snprintf(time_buf->buf, sizeof (time_buf->buf),
  70                     MSG_ORIG(MSG_TIME_SF), sec, usec);
  71
  72         return ((const char *)time_buf);
  73 }