148 lines
4.1 KiB
C
148 lines
4.1 KiB
C
/*
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* Gather statistics from performance sensitive code.
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*
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* Copyright (C) 2013-2022 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
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* Copyright (C) 2008-2013 Sourcefire, Inc.
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*
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* Authors: Török Edvin
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "clamav-config.h"
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#endif
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#include "perflogging.h"
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#include <stdio.h>
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#ifdef CLI_PERF_LOGGING
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__thread last_flushed = 0;
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__thread cli_perf_registered = 0;
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__thread uint64_t cli_perf_sum_tls[__LAST_SUMABLE];
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__thread uint64_t cli_perf_count_tls[__LAST_COUNTABLE][256];
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uint64_t cli_perf_sum[__LAST_SUMABLE];
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uint64_t cli_perf_count[__LAST_COUNTABLE][256];
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static pthread_key_t thread_exit_key;
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int pthread_key_create(pthread_key_t *key, void (*destr_function)(void *));
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static void cli_perf_thread_exit(void *arg)
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{
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/* save counters into global */
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cli_perf_flush();
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}
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void __attribute__((constructor)) __cli_perf_init(void)
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{
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pthread_key_create(&thread_exit_key, cli_perf_thread_exit);
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}
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void __attribute__((destructor)) __cli_perf_exit(void)
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{
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cli_perf_thread_exit(NULL);
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}
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static int dummy;
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void cli_perf_register(void)
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{
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/* set a fake key, so that destructor gets called */
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pthread_setspecific(thread_exit_key, &dummy);
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cli_perf_registered = 1;
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}
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static const char *perf_log_names_sum[__LAST_SUMABLE] = {
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"raw scanned",
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"filter scanned",
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"AC scanned",
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"BM scanned"};
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static const char *perf_log_names_cnt[__LAST_COUNTABLE] = {
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"trie bytes scanned",
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"filter position load",
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"filter end load",
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"trie pattern original length"};
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#define NONE __LAST_SUMABLE
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static enum perf_log_sumable perf_log_percent[__LAST_SUMABLE] = {
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NONE,
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RAW_BYTES_SCANNED,
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RAW_BYTES_SCANNED,
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RAW_BYTES_SCANNED,
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};
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static enum perf_log_countable perf_log_percent_cnt[__LAST_COUNTABLE] = {
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RAW_BYTES_SCANNED,
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NONE,
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NONE,
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NONE,
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};
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static void cli_perf_print(void)
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{
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enum perf_log_sumable i;
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enum perf_log_countable j;
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unsigned k;
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uint64_t raw_scanned = cli_perf_sum[RAW_BYTES_SCANNED];
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const double MEGA = 1024 * 1024.0;
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/* in multiscan mode multiple threads can output, so output a unique id
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* here*/
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printf("PERF: %p\n", &cli_perf_registered);
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for (i = 0; i < __LAST_SUMABLE; i++) {
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printf("PERF: %s: %g MB", perf_log_names_sum[i], cli_perf_sum[i] / MEGA);
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if (perf_log_percent[i] != NONE)
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printf("(%6.3f%%)", 100.0 * cli_perf_sum[i] / cli_perf_sum[perf_log_percent[i]]);
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printf("\n");
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}
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printf("\n");
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for (j = 0; j < __LAST_COUNTABLE; j++) {
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printf("PERF: %s: ", perf_log_names_cnt[j]);
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for (k = 0; k < 256; k++)
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if (cli_perf_count[j][k]) {
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printf(" %u -> %ju", k, cli_perf_count[j][k]);
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if (perf_log_percent_cnt[j] != NONE)
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printf("(%6.3f%%)", 100.0 * cli_perf_count[j][k] / cli_perf_sum[perf_log_percent_cnt[j]]);
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}
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printf("\n");
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}
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printf("\n");
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}
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static pthread_mutex_t cli_perf_log_mutex = PTHREAD_MUTEX_INITIALIZER;
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void cli_perf_flush(void)
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{
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unsigned i, j;
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pthread_mutex_lock(&cli_perf_log_mutex);
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for (i = 0; i < __LAST_SUMABLE; i++) {
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cli_perf_sum[i] += cli_perf_sum_tls[i];
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cli_perf_sum_tls[i] = 0;
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}
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for (i = 0; i < __LAST_COUNTABLE; i++) {
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for (j = 0; j < 256; j++) {
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cli_perf_count[i][j] += cli_perf_count_tls[i][j];
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cli_perf_count_tls[i][j] = 0;
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}
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}
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cli_perf_print();
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pthread_mutex_unlock(&cli_perf_log_mutex);
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}
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#endif
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