progress.c

   1 /*
   2  * Routines to output progress information during a file transfer.
   3  *
   4  * Copyright (C) 1996-2000 Andrew Tridgell
   5  * Copyright (C) 1996 Paul Mackerras
   6  * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
   7  * Copyright (C) 2003-2009 Wayne Davison
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 3 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, visit the http://fsf.org website.
  21  */
  22
  23 #include "rsync.h"
  24
  25 extern int am_server;
  26 extern int need_unsorted_flist;
  27 extern struct stats stats;
  28 extern struct file_list *cur_flist;
  29
  30 #define PROGRESS_HISTORY_SECS 5
  31
  32 #ifdef GETPGRP_VOID
  33 #define GETPGRP_ARG
  34 #else
  35 #define GETPGRP_ARG 0
  36 #endif
  37
  38 struct progress_history {
  39         struct timeval time;
  40         OFF_T ofs;
  41 };
  42
  43 int progress_is_active = 0;
  44
  45 static struct progress_history ph_start;
  46 static struct progress_history ph_list[PROGRESS_HISTORY_SECS];
  47 static int newest_hpos, oldest_hpos;
  48 static int current_file_index;
  49
  50 static unsigned long msdiff(struct timeval *t1, struct timeval *t2)
  51 {
  52         return (t2->tv_sec - t1->tv_sec) * 1000L
  53              + (t2->tv_usec - t1->tv_usec) / 1000;
  54 }
  55
  56
  57 /**
  58  * @param ofs Current position in file
  59  * @param size Total size of file
  60  * @param is_last True if this is the last time progress will be
  61  * printed for this file, so we should output a newline.  (Not
  62  * necessarily the same as all bytes being received.)
  63  **/
  64 static void rprint_progress(OFF_T ofs, OFF_T size, struct timeval *now,
  65                             int is_last)
  66 {
  67         char rembuf[64], eol[128];
  68         const char *units;
  69         int pct = ofs == size ? 100 : (int) (100.0 * ofs / size);
  70         unsigned long diff;
  71         double rate, remain;
  72
  73         if (is_last) {
  74                 /* Compute stats based on the starting info. */
  75                 if (!ph_start.time.tv_sec
  76                     || !(diff = msdiff(&ph_start.time, now)))
  77                         diff = 1;
  78                 rate = (double) (ofs - ph_start.ofs) * 1000.0 / diff / 1024.0;
  79                 /* Switch to total time taken for our last update. */
  80                 remain = (double) diff / 1000.0;
  81         } else {
  82                 /* Compute stats based on recent progress. */
  83                 if (!(diff = msdiff(&ph_list[oldest_hpos].time, now)))
  84                         diff = 1;
  85                 rate = (double) (ofs - ph_list[oldest_hpos].ofs) * 1000.0
  86                      / diff / 1024.0;
  87                 remain = rate ? (double) (size - ofs) / rate / 1000.0 : 0.0;
  88         }
  89
  90         if (rate > 1024*1024) {
  91                 rate /= 1024.0 * 1024.0;
  92                 units = "GB/s";
  93         } else if (rate > 1024) {
  94                 rate /= 1024.0;
  95                 units = "MB/s";
  96         } else {
  97                 units = "kB/s";
  98         }
  99
 100         if (remain < 0)
 101                 strlcpy(rembuf, "  ??:??:??", sizeof rembuf);
 102         else {
 103                 snprintf(rembuf, sizeof rembuf, "%4d:%02d:%02d",
 104                          (int) (remain / 3600.0),
 105                          (int) (remain / 60.0) % 60,
 106                          (int) remain % 60);
 107         }
 108
 109         if (is_last) {
 110                 snprintf(eol, sizeof eol, " (xfer#%d, to-check=%d/%d)\n",
 111                         stats.num_transferred_files,
 112                         stats.num_files - current_file_index - 1,
 113                         stats.num_files);
 114         } else
 115                 strlcpy(eol, "\r", sizeof eol);
 116         progress_is_active = 0;
 117         rprintf(FCLIENT, "%12s %3d%% %7.2f%s %s%s",
 118                 human_num(ofs), pct, rate, units, rembuf, eol);
 119         if (!is_last)
 120                 progress_is_active = 1;
 121 }
 122
 123 void set_current_file_index(struct file_struct *file, int ndx)
 124 {
 125         if (need_unsorted_flist)
 126                 current_file_index = flist_find(cur_flist, file) + cur_flist->ndx_start;
 127         else
 128                 current_file_index = ndx;
 129         current_file_index -= cur_flist->flist_num;
 130 }
 131
 132 void end_progress(OFF_T size)
 133 {
 134         if (!am_server) {
 135                 struct timeval now;
 136                 gettimeofday(&now, NULL);
 137                 rprint_progress(size, size, &now, True);
 138         }
 139         memset(&ph_start, 0, sizeof ph_start);
 140 }
 141
 142 void show_progress(OFF_T ofs, OFF_T size)
 143 {
 144         struct timeval now;
 145 #if defined HAVE_GETPGRP && defined HAVE_TCGETPGRP
 146         static pid_t pgrp = -1;
 147         pid_t tc_pgrp;
 148 #endif
 149
 150         if (am_server)
 151                 return;
 152
 153 #if defined HAVE_GETPGRP && defined HAVE_TCGETPGRP
 154         if (pgrp == -1)
 155                 pgrp = getpgrp(GETPGRP_ARG);
 156 #endif
 157
 158         gettimeofday(&now, NULL);
 159
 160         if (!ph_start.time.tv_sec) {
 161                 int i;
 162
 163                 /* Try to guess the real starting time when the sender started
 164                  * to send us data by using the time we last received some data
 165                  * in the last file (if it was recent enough). */
 166                 if (msdiff(&ph_list[newest_hpos].time, &now) <= 1500) {
 167                         ph_start.time = ph_list[newest_hpos].time;
 168                         ph_start.ofs = 0;
 169                 } else {
 170                         ph_start.time.tv_sec = now.tv_sec;
 171                         ph_start.time.tv_usec = now.tv_usec;
 172                         ph_start.ofs = ofs;
 173                 }
 174
 175                 for (i = 0; i < PROGRESS_HISTORY_SECS; i++)
 176                         ph_list[i] = ph_start;
 177         }
 178         else {
 179                 if (msdiff(&ph_list[newest_hpos].time, &now) < 1000)
 180                         return;
 181
 182                 newest_hpos = oldest_hpos;
 183                 oldest_hpos = (oldest_hpos + 1) % PROGRESS_HISTORY_SECS;
 184                 ph_list[newest_hpos].time.tv_sec = now.tv_sec;
 185                 ph_list[newest_hpos].time.tv_usec = now.tv_usec;
 186                 ph_list[newest_hpos].ofs = ofs;
 187         }
 188
 189 #if defined HAVE_GETPGRP && defined HAVE_TCGETPGRP
 190         tc_pgrp = tcgetpgrp(STDOUT_FILENO);
 191         if (tc_pgrp != pgrp && tc_pgrp != -1)
 192                 return;
 193 #endif
 194
 195         rprint_progress(ofs, size, &now, False);
 196 }