progress.c

   1 /*  -*- c-file-style: "linux" -*-
   2  *
   3  * Copyright (C) 1996-2000 by Andrew Tridgell
   4  * Copyright (C) Paul Mackerras 1996
   5  * Copyright (C) 2001, 2002 by Martin Pool <mbp@samba.org>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include "rsync.h"
  23
  24 static OFF_T  last_ofs;
  25 static struct timeval print_time;
  26 static struct timeval start_time;
  27 static OFF_T  start_ofs;
  28
  29 static unsigned long msdiff(struct timeval *t1, struct timeval *t2)
  30 {
  31     return (t2->tv_sec - t1->tv_sec) * 1000
  32         + (t2->tv_usec - t1->tv_usec) / 1000;
  33 }
  34
  35
  36 /**
  37  * @param ofs Current position in file
  38  * @param size Total size of file
  39  * @param is_last True if this is the last time progress will be
  40  * printed for this file, so we should output a newline.  (Not
  41  * necessarily the same as all bytes being received.)
  42  **/
  43 static void rprint_progress(OFF_T ofs, OFF_T size, struct timeval *now,
  44                             int is_last)
  45 {
  46     int           pct  = (ofs == size) ? 100 : (int)((100.0*ofs)/size);
  47     unsigned long diff = msdiff(&start_time, now);
  48     double        rate = diff ? (double) (ofs-start_ofs) * 1000.0 / diff / 1024.0 : 0;
  49     const char    *units;
  50     /* If we've finished transferring this file, show the time taken;
  51      * otherwise show expected time to complete.  That's kind of
  52      * inconsistent, but people can probably cope.  Hopefully we'll
  53      * get more consistent and complete progress reporting soon. --
  54      * mbp */
  55     double        remain = is_last
  56                         ? (double) diff / 1000.0
  57                         : rate ? (double) (size-ofs) / rate / 1000.0 : 0.0;
  58     int           remain_h, remain_m, remain_s;
  59
  60     if (rate > 1024*1024) {
  61             rate /= 1024.0 * 1024.0;
  62             units = "GB/s";
  63     } else if (rate > 1024) {
  64             rate /= 1024.0;
  65             units = "MB/s";
  66     } else {
  67             units = "kB/s";
  68     }
  69
  70     remain_s = (int) remain % 60;
  71     remain_m = (int) (remain / 60.0) % 60;
  72     remain_h = (int) (remain / 3600.0);
  73
  74     rprintf(FINFO, "%12.0f %3d%% %7.2f%s %4d:%02d:%02d%s",
  75             (double) ofs, pct, rate, units,
  76             remain_h, remain_m, remain_s,
  77             is_last ? "\n" : "\r");
  78 }
  79
  80 void end_progress(OFF_T size)
  81 {
  82         extern int am_server;
  83
  84         if (!am_server) {
  85                 struct timeval now;
  86                 gettimeofday(&now, NULL);
  87                 rprint_progress(size, size, &now, True);
  88         }
  89         last_ofs   = 0;
  90         start_ofs  = 0;
  91         print_time.tv_sec  = print_time.tv_usec  = 0;
  92         start_time.tv_sec  = start_time.tv_usec  = 0;
  93 }
  94
  95 void show_progress(OFF_T ofs, OFF_T size)
  96 {
  97         extern int am_server;
  98         struct timeval now;
  99
 100         if (!start_time.tv_sec) {
 101                 gettimeofday(&now, NULL);
 102                 start_time.tv_sec  = now.tv_sec;
 103                 start_time.tv_usec = now.tv_usec;
 104                 start_ofs          = ofs;
 105                 if (am_server)
 106                         return;
 107         }
 108         else {
 109                 if (am_server)
 110                         return;
 111                 gettimeofday(&now, NULL);
 112         }
 113
 114         if (ofs > last_ofs + 1000
 115          && msdiff(&print_time, &now) > 250) {
 116                 rprint_progress(ofs, size, &now, False);
 117                 last_ofs = ofs;
 118                 print_time.tv_sec  = now.tv_sec;
 119                 print_time.tv_usec = now.tv_usec;
 120         }
 121 }