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dump1090/stats.c

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// Part of dump1090, a Mode S message decoder for RTLSDR devices.
//
// stats.c: statistics helpers.
//
// Copyright (c) 2015 Oliver Jowett <oliver@mutability.co.uk>
//
// This file is free software: you may copy, redistribute and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation, either version 2 of the License, or (at your
// option) any later version.
//
// This file is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
// This file incorporates work covered by the following copyright and
// permission notice:
//
// Copyright (C) 2012 by Salvatore Sanfilippo <antirez@gmail.com>
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "dump1090.h"
static void display_demod_stats(const char *prefix, struct demod_stats *dstats) {
int j;
printf("%d %sdemodulated with 0 errors\n", dstats->demodulated0, prefix);
printf("%d %sdemodulated with 1 error\n", dstats->demodulated1, prefix);
printf("%d %sdemodulated with 2 errors\n", dstats->demodulated2, prefix);
printf("%d %sdemodulated with > 2 errors\n", dstats->demodulated3, prefix);
printf("%d %swith good crc\n", dstats->goodcrc, prefix);
for (j = 0; j < MODES_MAX_PHASE_STATS; ++j)
if (dstats->goodcrc_byphase[j] > 0)
printf(" %d %swith phase offset %d\n", dstats->goodcrc_byphase[j], prefix, j);
printf("%d %swith bad crc\n", dstats->badcrc, prefix);
printf("%d %serrors corrected\n", dstats->fixed, prefix);
for (j = 0; j < Modes.nfix_crc; j++) {
printf(" %d %swith %d bit %s\n", dstats->bit_fix[j], prefix, j+1, (j==0)?"error":"errors");
}
}
void display_stats(struct stats *st) {
int j;
struct tm tm_start, tm_end;
char tb_start[30], tb_end[30];
printf("\n\n");
if (Modes.interactive)
interactiveShowData();
localtime_r(&st->start, &tm_start);
strftime(tb_start, sizeof(tb_start), "%c", &tm_start);
localtime_r(&st->end, &tm_end);
strftime(tb_end, sizeof(tb_end), "%c", &tm_end);
printf("Statistics: %s - %s\n", tb_start, tb_end);
if (!Modes.net_only) {
printf("%d sample blocks processed\n", st->blocks_processed);
printf("%d sample blocks dropped\n", st->blocks_dropped);
if (st->blocks_processed > 0) {
long cpu_millis = (long)st->cputime.tv_sec*1000L + st->cputime.tv_nsec/1000000L;
long sample_millis = (long) ((uint64_t)st->blocks_processed * MODES_ASYNC_BUF_SAMPLES / (Modes.oversample ? 2400 : 2000));
printf("%ld ms CPU time used to process %ld ms samples, %.1f%% load\n",
cpu_millis, sample_millis, 100.0 * cpu_millis / sample_millis);
}
printf("%d ModeA/C detected\n", st->ModeAC);
printf("%d Mode-S preambles with poor correlation\n", st->preamble_no_correlation);
printf("%d Mode-S preambles with noise in the quiet period\n", st->preamble_not_quiet);
printf("%d valid Mode-S preambles\n", st->valid_preamble);
for (j = 0; j < MODES_MAX_PHASE_STATS; ++j)
if (st->preamble_phase[j] > 0)
printf(" %d with phase offset %d\n", st->preamble_phase[j], j);
printf("%d DF-?? fields corrected for length\n", st->DF_Len_Corrected);
printf("%d DF-?? fields corrected for type\n", st->DF_Type_Corrected);
display_demod_stats("", &st->demod);
if (Modes.phase_enhance) {
printf("%d phase enhancement attempts\n", st->out_of_phase);
display_demod_stats("phase enhanced ", &st->demod_phasecorrected);
}
}
printf("%d remote messages accepted\n"
"%d remote messages rejected\n",
st->remote_accepted,
st->remote_rejected);
printf("%d total usable messages\n",
st->messages_total);
fflush(stdout);
}
void reset_stats(struct stats *st) {
static struct stats st_zero;
*st = st_zero;
}
static void add_demod_stats(const struct demod_stats *st1, const struct demod_stats *st2, struct demod_stats *target)
{
int i;
target->demodulated0 = st1->demodulated0 + st2->demodulated0;
target->demodulated1 = st1->demodulated1 + st2->demodulated1;
target->demodulated2 = st1->demodulated2 + st2->demodulated2;
target->demodulated3 = st1->demodulated3 + st2->demodulated3;
target->goodcrc = st1->goodcrc + st2->goodcrc;
for (i = 0; i < MODES_MAX_PHASE_STATS; ++i)
target->goodcrc_byphase[i] = st1->goodcrc_byphase[i] + st2->goodcrc_byphase[i];
target->badcrc = st1->badcrc + st2->badcrc;
target->fixed = st1->fixed + st2->fixed;
for (i = 0; i < MODES_MAX_BITERRORS; ++i)
target->bit_fix[i] = st1->bit_fix[i] + st2->bit_fix[i];
}
void add_stats(const struct stats *st1, const struct stats *st2, struct stats *target) {
int i;
if (st1->start == 0)
target->start = st2->start;
else if (st2->start == 0)
target->start = st1->start;
else if (st1->start < st2->start)
target->start = st1->start;
else
target->start = st2->start;
target->end = st1->end > st2->end ? st1->end : st2->end;
target->preamble_no_correlation = st1->preamble_no_correlation + st2->preamble_no_correlation;
target->preamble_not_quiet = st1->preamble_not_quiet + st2->preamble_not_quiet;
target->valid_preamble = st1->valid_preamble + st2->valid_preamble;
for (i = 0; i < MODES_MAX_PHASE_STATS; ++i)
target->preamble_phase[i] = st1->preamble_phase[i] + st2->preamble_phase[i];
add_demod_stats(&st1->demod, &st2->demod, &target->demod);
add_demod_stats(&st1->demod_phasecorrected, &st2->demod_phasecorrected, &target->demod_phasecorrected);
target->http_requests = st1->http_requests + st2->http_requests;
target->out_of_phase = st1->out_of_phase + st2->out_of_phase;
target->DF_Len_Corrected = st1->DF_Len_Corrected + st2->DF_Len_Corrected;
target->DF_Type_Corrected = st1->DF_Type_Corrected + st2->DF_Type_Corrected;
target->ModeAC = st1->ModeAC + st2->ModeAC;
target->blocks_processed = st1->blocks_processed + st2->blocks_processed;
target->blocks_dropped = st1->blocks_dropped + st2->blocks_dropped;
target->cputime.tv_sec = st1->cputime.tv_sec + st2->cputime.tv_sec;
target->cputime.tv_nsec = st1->cputime.tv_nsec + st2->cputime.tv_nsec;
target->cputime.tv_sec += target->cputime.tv_nsec / 1000000000L;
target->cputime.tv_nsec %= 1000000000L;
// remote messages:
target->remote_accepted = st1->remote_accepted + st2->remote_accepted;
target->remote_rejected = st1->remote_rejected + st2->remote_rejected;
// total messages:
target->messages_total = st1->messages_total + st2->messages_total;
}
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