rsync/stats.c

   1 /*= -*- c-basic-offset: 4; indent-tabs-mode: nil; -*-
   2  *
   3  * $Id$
   4  *
   5  * Copyright (C) 2000, 2001 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 Lesser General Public License as published by
   9  * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser 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
  23 #include <config.h>
  24
  25 #include <assert.h>
  26 #include <stdlib.h>
  27 #include <stdio.h>
  28 #ifdef HAVE_UNISTD_H
  29 #include <unistd.h>
  30 #endif
  31 #ifdef HAVE_SYS_FILE_H
  32 #include <sys/file.h>
  33 #endif
  34 #include <string.h>
  35
  36 #include "rsync.h"
  37 #include "trace.h"
  38
  39 /*
  40  * TODO: Other things to show in statistics:
  41  *
  42  * Number of input and output bytes.
  43  *
  44  * Number of times we blocked waiting for input or output.
  45  *
  46  * Number of blocks.
  47  */
  48
  49 int
  50 rs_log_stats(rs_stats_t const *stats)
  51 {
  52     char buf[1000];
  53
  54     rs_format_stats(stats, buf, sizeof buf - 1);
  55     rs_log(RS_LOG_INFO|RS_LOG_NONAME, "%s", buf);
  56     return 0;
  57 }
  58
  59
  60
  61 /**
  62  * \brief Return a human-readable representation of statistics.
  63  *
  64  * The string is truncated if it does not fit.  100 characters should
  65  * be sufficient space.
  66  *
  67  * \param stats Statistics from an encoding or decoding operation.
  68  *
  69  * \param buf Buffer to receive result.
  70  * \param size Size of buffer.
  71  * \return buf
  72  */
  73 char *
  74 rs_format_stats(rs_stats_t const * stats,
  75                 char *buf, size_t size)
  76 {
  77     char const *op = stats->op;
  78     int len;
  79
  80     if (!op)
  81         op = "noop";
  82
  83     len = snprintf(buf, size, "%s statistics: ", op);
  84
  85     if (stats->lit_cmds) {
  86         len += snprintf(buf+len, size-len,
  87                         "literal[%d cmds, %.0f bytes, %.0f cmdbytes] ",
  88                         stats->lit_cmds,
  89                         (double) stats->lit_bytes,
  90                         (double) stats->lit_cmdbytes);
  91     }
  92
  93     if (stats->sig_cmds) {
  94         len += snprintf(buf+len, size-len,
  95                         "in-place-signature[%.0f cmds, %.0f bytes] ",
  96                         (double) stats->sig_cmds,
  97                         (double) stats->sig_bytes);
  98     }
  99
 100     if (stats->copy_cmds || stats->false_matches) {
 101         len += snprintf(buf+len, size-len,
 102                         "copy[%.0f cmds, %.0f bytes, %.0f false, %.0f cmdbytes]",
 103                         (double) stats->copy_cmds,
 104                         (double) stats->copy_bytes,
 105                         (double) stats->false_matches,
 106                         (double) stats->copy_cmdbytes);
 107     }
 108
 109
 110     if (stats->sig_blocks) {
 111         len  += snprintf(buf+len, size-len,
 112                          "signature[%.0f blocks, %.0f bytes per block]",
 113                          (double) stats->sig_blocks,
 114                          (double) stats->block_len);
 115     }
 116
 117     return buf;
 118 }