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/*
* testing log message generator
* Copyright (C) 2019-2020 David Lamparter for NetDEF, Inc.
*
* This program is free software; you can redistribute it 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 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; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <zebra.h>
#include "vty.h"
#include "command.h"
#include "prefix.h"
#include "nexthop.h"
#include "log.h"
#include "thread.h"
#include "vrf.h"
#include "zclient.h"
#include "frr_pthread.h"
#include "sharpd/sharp_vty.h"
/* this is quite hacky, but then again it's a test tool and it does its job. */
static struct frr_pthread *lpt;
static unsigned long lp_duration;
static unsigned lp_frequency;
static unsigned lp_burst;
static size_t lp_ctr, lp_expect;
static struct rusage lp_rusage;
static struct vty *lp_vty;
extern struct thread_master *master;
static void logpump_done(struct thread *thread)
{
double x;
vty_out(lp_vty, "\nlogpump done\n");
vty_out(lp_vty, "%9zu messages written\n", lp_ctr);
x = (double)lp_ctr / (double)lp_expect * 100.;
vty_out(lp_vty, "%9zu messages targeted = %5.1lf%%\n", lp_expect, x);
x = lp_rusage.ru_utime.tv_sec * 1000000 + lp_rusage.ru_utime.tv_usec;
x /= (double)lp_ctr;
vty_out(lp_vty, "%6llu.%06u usr %9.1lfns/msg\n",
(unsigned long long)lp_rusage.ru_utime.tv_sec,
(unsigned)lp_rusage.ru_utime.tv_usec, x * 1000.);
x = lp_rusage.ru_stime.tv_sec * 1000000 + lp_rusage.ru_stime.tv_usec;
x /= (double)lp_ctr;
vty_out(lp_vty, "%6llu.%06u sys %9.1lfns/msg\n",
(unsigned long long)lp_rusage.ru_stime.tv_sec,
(unsigned)lp_rusage.ru_stime.tv_usec, x * 1000.);
frr_pthread_stop(lpt, NULL);
frr_pthread_destroy(lpt);
lpt = NULL;
}
static void *logpump_run(void *arg)
{
struct timespec start, next, now;
unsigned long delta, period;
period = 1000000000L / lp_frequency;
zlog_tls_buffer_init();
clock_gettime(CLOCK_MONOTONIC, &start);
next = start;
do {
for (size_t inburst = 0; inburst < lp_burst; inburst++)
zlog_debug("log pump: %zu (burst %zu)",
lp_ctr++, inburst);
clock_gettime(CLOCK_MONOTONIC, &now);
delta = (now.tv_sec - start.tv_sec) * 1000000000L
+ (now.tv_nsec - start.tv_nsec);
next.tv_nsec += period;
if (next.tv_nsec > 1000000000L) {
next.tv_sec++;
next.tv_nsec -= 1000000000L;
}
#ifdef HAVE_CLOCK_NANOSLEEP
clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &next, NULL);
#else
struct timespec slpdur;
slpdur.tv_sec = next.tv_sec - now.tv_sec;
slpdur.tv_nsec = next.tv_nsec - now.tv_nsec;
if (slpdur.tv_nsec < 0) {
slpdur.tv_sec--;
slpdur.tv_nsec += 1000000000L;
}
nanosleep(&slpdur, NULL);
#endif
} while (delta < lp_duration);
zlog_tls_buffer_fini();
#ifdef RUSAGE_THREAD
getrusage(RUSAGE_THREAD, &lp_rusage);
#else
getrusage(RUSAGE_SELF, &lp_rusage);
#endif
thread_add_timer_msec(master, logpump_done, NULL, 0, NULL);
return NULL;
}
static int logpump_halt(struct frr_pthread *fpt, void **res)
{
return 0;
}
/* default frr_pthread attributes */
static const struct frr_pthread_attr attr = {
.start = logpump_run,
.stop = logpump_halt,
};
void sharp_logpump_run(struct vty *vty, unsigned duration, unsigned frequency,
unsigned burst)
{
if (lpt != NULL) {
vty_out(vty, "logpump already running\n");
return;
}
vty_out(vty, "starting logpump...\n");
vty_out(vty, "keep this VTY open and press Enter to see results\n");
lp_vty = vty;
lp_duration = duration * 1000000000UL;
lp_frequency = frequency;
lp_burst = burst;
lp_expect = duration * frequency * burst;
lp_ctr = 0;
lpt = frr_pthread_new(&attr, "logpump", "logpump");
frr_pthread_run(lpt, NULL);
}
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