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) 2003-2020 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 #include "inums.h"
  25
  26 extern int am_server;
  27 extern int flist_eof;
  28 extern int quiet;
  29 extern int need_unsorted_flist;
  30 extern int output_needs_newline;
  31 extern int stdout_format_has_i;
  32 extern struct stats stats;
  33 extern struct file_list *cur_flist;
  34
  35 BOOL want_progress_now = False;
  36
  37 #define PROGRESS_HISTORY_SECS 5
  38
  39 #ifdef GETPGRP_VOID
  40 #define GETPGRP_ARG
  41 #else
  42 #define GETPGRP_ARG 0
  43 #endif
  44
  45 struct progress_history {
  46         struct timeval time;
  47         OFF_T ofs;
  48 };
  49
  50 static struct progress_history ph_start;
  51 static struct progress_history ph_list[PROGRESS_HISTORY_SECS];
  52 static int newest_hpos, oldest_hpos;
  53 static int current_file_index;
  54
  55 static unsigned long msdiff(struct timeval *t1, struct timeval *t2)
  56 {
  57         return (t2->tv_sec - t1->tv_sec) * 1000L
  58              + (t2->tv_usec - t1->tv_usec) / 1000;
  59 }
  60
  61
  62 /**
  63  * @param ofs Current position in file
  64  * @param size Total size of file
  65  * @param is_last True if this is the last time progress will be
  66  * printed for this file, so we should output a newline.  (Not
  67  * necessarily the same as all bytes being received.)
  68  **/
  69 static void rprint_progress(OFF_T ofs, OFF_T size, struct timeval *now,
  70                             int is_last)
  71 {
  72         char rembuf[64], eol[128];
  73         const char *units;
  74         unsigned long diff;
  75         double rate, remain;
  76         int pct;
  77
  78         if (is_last) {
  79                 int len = snprintf(eol, sizeof eol,
  80                         " (xfr#%d, %s-chk=%d/%d)\n",
  81                         stats.xferred_files, flist_eof ? "to" : "ir",
  82                         stats.num_files - current_file_index - 1,
  83                         stats.num_files);
  84                 if (INFO_GTE(PROGRESS, 2)) {
  85                         static int last_len = 0;
  86                         /* Drop \n and pad with spaces if line got shorter. */
  87                         if (last_len < --len)
  88                                 last_len = len;
  89                         eol[last_len] = '\0';
  90                         while (last_len > len)
  91                                 eol[--last_len] = ' ';
  92                         is_last = 0;
  93                 }
  94                 /* Compute stats based on the starting info. */
  95                 if (!ph_start.time.tv_sec
  96                     || !(diff = msdiff(&ph_start.time, now)))
  97                         diff = 1;
  98                 rate = (double) (ofs - ph_start.ofs) * 1000.0 / diff / 1024.0;
  99                 /* Switch to total time taken for our last update. */
 100                 remain = (double) diff / 1000.0;
 101         } else {
 102                 strlcpy(eol, "  ", sizeof eol);
 103                 /* Compute stats based on recent progress. */
 104                 if (!(diff = msdiff(&ph_list[oldest_hpos].time, now)))
 105                         diff = 1;
 106                 rate = (double) (ofs - ph_list[oldest_hpos].ofs) * 1000.0
 107                      / diff / 1024.0;
 108                 remain = rate ? (double) (size - ofs) / rate / 1000.0 : 0.0;
 109         }
 110
 111         if (rate > 1024*1024) {
 112                 rate /= 1024.0 * 1024.0;
 113                 units = "GB/s";
 114         } else if (rate > 1024) {
 115                 rate /= 1024.0;
 116                 units = "MB/s";
 117         } else {
 118                 units = "kB/s";
 119         }
 120
 121         if (remain < 0)
 122                 strlcpy(rembuf, "  ??:??:??", sizeof rembuf);
 123         else {
 124                 snprintf(rembuf, sizeof rembuf, "%4d:%02d:%02d",
 125                          (int) (remain / 3600.0),
 126                          (int) (remain / 60.0) % 60,
 127                          (int) remain % 60);
 128         }
 129
 130         output_needs_newline = 0;
 131         pct = ofs == size ? 100 : (int) (100.0 * ofs / size);
 132         rprintf(FCLIENT, "\r%15s %3d%% %7.2f%s %s%s",
 133                 human_num(ofs), pct, rate, units, rembuf, eol);
 134         if (!is_last && !quiet) {
 135                 output_needs_newline = 1;
 136                 rflush(FCLIENT);
 137         }
 138 }
 139
 140 void progress_init(void)
 141 {
 142         if (!am_server && !INFO_GTE(PROGRESS, 1)) {
 143                 struct timeval now;
 144                 gettimeofday(&now, NULL);
 145                 ph_start.time.tv_sec = now.tv_sec;
 146                 ph_start.time.tv_usec = now.tv_usec;
 147         }
 148 }
 149
 150 void set_current_file_index(struct file_struct *file, int ndx)
 151 {
 152         if (!file)
 153                 current_file_index = cur_flist->used + cur_flist->ndx_start - 1;
 154         else if (need_unsorted_flist)
 155                 current_file_index = flist_find(cur_flist, file) + cur_flist->ndx_start;
 156         else
 157                 current_file_index = ndx;
 158         current_file_index -= cur_flist->flist_num;
 159 }
 160
 161 void instant_progress(const char *fname)
 162 {
 163         /* We only get here if want_progress_now is True */
 164         if (!stdout_format_has_i && !INFO_GTE(NAME, 1))
 165                 rprintf(FINFO, "%s\n", fname);
 166         end_progress(0);
 167         want_progress_now = False;
 168 }
 169
 170 void end_progress(OFF_T size)
 171 {
 172         if (!am_server) {
 173                 struct timeval now;
 174                 gettimeofday(&now, NULL);
 175                 if (INFO_GTE(PROGRESS, 2) || want_progress_now) {
 176                         rprint_progress(stats.total_transferred_size,
 177                                         stats.total_size, &now, True);
 178                 } else {
 179                         rprint_progress(size, size, &now, True);
 180                         memset(&ph_start, 0, sizeof ph_start);
 181                 }
 182         }
 183 }
 184
 185 void show_progress(OFF_T ofs, OFF_T size)
 186 {
 187         struct timeval now;
 188 #if defined HAVE_GETPGRP && defined HAVE_TCGETPGRP
 189         static pid_t pgrp = -1;
 190         pid_t tc_pgrp;
 191 #endif
 192
 193         if (am_server)
 194                 return;
 195
 196 #if defined HAVE_GETPGRP && defined HAVE_TCGETPGRP
 197         if (pgrp == -1)
 198                 pgrp = getpgrp(GETPGRP_ARG);
 199 #endif
 200
 201         gettimeofday(&now, NULL);
 202
 203         if (INFO_GTE(PROGRESS, 2)) {
 204                 ofs = stats.total_transferred_size - size + ofs;
 205                 size = stats.total_size;
 206         }
 207
 208         if (!ph_start.time.tv_sec) {
 209                 int i;
 210
 211                 /* Try to guess the real starting time when the sender started
 212                  * to send us data by using the time we last received some data
 213                  * in the last file (if it was recent enough). */
 214                 if (msdiff(&ph_list[newest_hpos].time, &now) <= 1500) {
 215                         ph_start.time = ph_list[newest_hpos].time;
 216                         ph_start.ofs = 0;
 217                 } else {
 218                         ph_start.time.tv_sec = now.tv_sec;
 219                         ph_start.time.tv_usec = now.tv_usec;
 220                         ph_start.ofs = ofs;
 221                 }
 222
 223                 for (i = 0; i < PROGRESS_HISTORY_SECS; i++)
 224                         ph_list[i] = ph_start;
 225         }
 226         else {
 227                 if (msdiff(&ph_list[newest_hpos].time, &now) < 1000)
 228                         return;
 229
 230                 newest_hpos = oldest_hpos;
 231                 oldest_hpos = (oldest_hpos + 1) % PROGRESS_HISTORY_SECS;
 232                 ph_list[newest_hpos].time.tv_sec = now.tv_sec;
 233                 ph_list[newest_hpos].time.tv_usec = now.tv_usec;
 234                 ph_list[newest_hpos].ofs = ofs;
 235         }
 236
 237 #if defined HAVE_GETPGRP && defined HAVE_TCGETPGRP
 238         tc_pgrp = tcgetpgrp(STDOUT_FILENO);
 239         if (tc_pgrp != pgrp && tc_pgrp != -1)
 240                 return;
 241 #endif
 242
 243         rprint_progress(ofs, size, &now, False);
 244 }