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 ? (double) diff / 1000.0
  56                       : rate ? (double) (size-ofs) / rate / 1000.0 : 0.0;
  57         int remain_h, remain_m, remain_s;
  58
  59         if (rate > 1024*1024) {
  60                 rate /= 1024.0 * 1024.0;
  61                 units = "GB/s";
  62         } else if (rate > 1024) {
  63                 rate /= 1024.0;
  64                 units = "MB/s";
  65         } else {
  66                 units = "kB/s";
  67         }
  68
  69         remain_s = (int) remain % 60;
  70         remain_m = (int) (remain / 60.0) % 60;
  71         remain_h = (int) (remain / 3600.0);
  72
  73         rprintf(FINFO, "%12.0f %3d%% %7.2f%s %4d:%02d:%02d%s",
  74                 (double) ofs, pct, rate, units,
  75                 remain_h, remain_m, remain_s,
  76                 is_last ? "\n" : "\r");
  77 }
  78
  79 void end_progress(OFF_T size)
  80 {
  81         extern int am_server;
  82
  83         if (!am_server) {
  84                 struct timeval now;
  85                 gettimeofday(&now, NULL);
  86                 rprint_progress(size, size, &now, True);
  87         }
  88         last_ofs = 0;
  89         start_ofs = 0;
  90         print_time.tv_sec = print_time.tv_usec = 0;
  91         start_time.tv_sec = start_time.tv_usec = 0;
  92 }
  93
  94 void show_progress(OFF_T ofs, OFF_T size)
  95 {
  96         extern int am_server;
  97         struct timeval now;
  98
  99         if (!start_time.tv_sec) {
 100                 gettimeofday(&now, NULL);
 101                 start_time.tv_sec = now.tv_sec;
 102                 start_time.tv_usec = now.tv_usec;
 103                 start_ofs = ofs;
 104                 if (am_server)
 105                         return;
 106         }
 107         else {
 108                 if (am_server)
 109                         return;
 110                 gettimeofday(&now, NULL);
 111         }
 112
 113         if (ofs > last_ofs + 1000 && msdiff(&print_time, &now) > 250) {
 114                 rprint_progress(ofs, size, &now, False);
 115                 last_ofs = ofs;
 116                 print_time.tv_sec = now.tv_sec;
 117                 print_time.tv_usec = now.tv_usec;
 118         }
 119 }