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/*
* Gather statistics from performance sensitive code.
*
* Copyright (C) 2008 Sourcefire, Inc.
*
* Authors: Török Edvin
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "clamav-config.h"
#endif
#include "perflogging.h"
#include <stdio.h>
#ifdef CLI_PERF_LOGGING
__thread last_flushed = 0;
__thread cli_perf_registered = 0;
__thread uint64_t cli_perf_sum_tls[__LAST_SUMABLE];
__thread uint64_t cli_perf_count_tls[__LAST_COUNTABLE][256];
uint64_t cli_perf_sum[__LAST_SUMABLE];
uint64_t cli_perf_count[__LAST_COUNTABLE][256];
static pthread_key_t thread_exit_key;
int pthread_key_create(pthread_key_t *key, void (*destr_function) (void *));
static void cli_perf_thread_exit(void* arg)
{
/* save counters into global */
cli_perf_flush();
}
void __attribute__((constructor)) __cli_perf_init(void)
{
pthread_key_create(&thread_exit_key, cli_perf_thread_exit);
}
void __attribute__((destructor)) __cli_perf_exit(void)
{
cli_perf_thread_exit(NULL);
}
static int dummy;
void cli_perf_register(void)
{
/* set a fake key, so that destructor gets called */
pthread_setspecific(thread_exit_key, &dummy);
cli_perf_registered = 1;
}
static const char *perf_log_names_sum[__LAST_SUMABLE] = {
"raw scanned",
"filter scanned",
"AC scanned",
"BM scanned"
};
static const char *perf_log_names_cnt[__LAST_COUNTABLE] = {
"trie bytes scanned",
"filter position load",
"filter end load",
"trie pattern original length"
};
#define NONE __LAST_SUMABLE
static enum perf_log_sumable perf_log_percent[__LAST_SUMABLE] = {
NONE,
RAW_BYTES_SCANNED,
RAW_BYTES_SCANNED,
RAW_BYTES_SCANNED,
};
static enum perf_log_countable perf_log_percent_cnt[__LAST_COUNTABLE] = {
RAW_BYTES_SCANNED,
NONE,
NONE,
NONE,
};
static void cli_perf_print(void)
{
enum perf_log_sumable i;
enum perf_log_countable j;
unsigned k;
uint64_t raw_scanned = cli_perf_sum[RAW_BYTES_SCANNED];
const double MEGA = 1024*1024.0;
/* in multiscan mode multiple threads can output, so output a unique id
* here*/
printf("PERF: %p\n", &cli_perf_registered);
for(i=0;i<__LAST_SUMABLE;i++) {
printf("PERF: %s: %g MB", perf_log_names_sum[i], cli_perf_sum[i] / MEGA);
if (perf_log_percent[i] != NONE)
printf("(%6.3f%%)", 100.0*cli_perf_sum[i] / cli_perf_sum[perf_log_percent[i]]);
printf("\n");
}
printf("\n");
for(j=0;j<__LAST_COUNTABLE;j++) {
printf("PERF: %s: ", perf_log_names_cnt[j]);
for (k=0;k<256;k++)
if (cli_perf_count[j][k]) {
printf(" %u -> %ju", k, cli_perf_count[j][k]);
if (perf_log_percent_cnt[j] != NONE)
printf("(%6.3f%%)", 100.0*cli_perf_count[j][k] / cli_perf_sum[perf_log_percent_cnt[j]]);
}
printf("\n");
}
printf("\n");
}
static pthread_mutex_t cli_perf_log_mutex = PTHREAD_MUTEX_INITIALIZER;
void cli_perf_flush(void)
{
unsigned i, j;
pthread_mutex_lock(&cli_perf_log_mutex);
for (i = 0; i < __LAST_SUMABLE; i++) {
cli_perf_sum[i] += cli_perf_sum_tls[i];
cli_perf_sum_tls[i] = 0;
}
for (i = 0; i < __LAST_COUNTABLE; i++) {
for (j = 0; j < 256; j++) {
cli_perf_count[i][j] += cli_perf_count_tls[i][j];
cli_perf_count_tls[i][j] = 0;
}
}
cli_perf_print();
pthread_mutex_unlock(&cli_perf_log_mutex);
}
#endif
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