| /* |
| * (C) 2008 by Holger Hans Peter Freyther <zecke@selfish.org> |
| * (C) 2011 by Harald Welte <laforge@gnumonks.org> |
| * All Rights Reserved |
| * |
| * Authors: Holger Hans Peter Freyther <zecke@selfish.org> |
| * Pablo Neira Ayuso <pablo@gnumonks.org> |
| * |
| * 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; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <signal.h> |
| #include <getopt.h> |
| #include <unistd.h> |
| |
| #include <osmocom/core/talloc.h> |
| #include <osmocom/core/timer.h> |
| #include <osmocom/core/select.h> |
| #include <osmocom/core/linuxlist.h> |
| |
| #include "../config.h" |
| |
| static void main_timer_fired(void *data); |
| static void secondary_timer_fired(void *data); |
| |
| static unsigned int main_timer_step = 0; |
| static struct osmo_timer_list main_timer; |
| |
| static LLIST_HEAD(timer_test_list); |
| |
| struct test_timer { |
| struct llist_head head; |
| struct osmo_timer_list timer; |
| struct timeval start; |
| struct timeval stop; |
| }; |
| |
| /* number of test steps. We add fact(steps) timers in the whole test. */ |
| #define MAIN_TIMER_NSTEPS 8 |
| |
| /* time between two steps, in secs. */ |
| #define TIME_BETWEEN_STEPS 1 |
| |
| /* how much time elapses between checks, in microsecs */ |
| #define TIME_BETWEEN_TIMER_CHECKS 423210 |
| |
| static int timer_nsteps = MAIN_TIMER_NSTEPS; |
| static unsigned int expired_timers = 0; |
| static unsigned int total_timers = 0; |
| static unsigned int too_late = 0; |
| static unsigned int too_soon = 0; |
| |
| static void main_timer_fired(void *data) |
| { |
| unsigned int *step = data; |
| unsigned int add_in_this_step; |
| int i; |
| printf("main_timer_fired()\n"); |
| |
| if (*step == timer_nsteps) { |
| printf("Main timer has finished, please, " |
| "wait a bit for the final report.\n"); |
| return; |
| } |
| /* add 2^step pair of timers per step. */ |
| add_in_this_step = (1 << *step); |
| |
| for (i=0; i<add_in_this_step; i++) { |
| struct test_timer *v; |
| |
| v = talloc_zero(NULL, struct test_timer); |
| if (v == NULL) { |
| printf("timer_test: OOM!\n"); |
| return; |
| } |
| osmo_gettimeofday(&v->start, NULL); |
| osmo_timer_setup(&v->timer, secondary_timer_fired, v); |
| unsigned int seconds = (i & 0x7) + 1; |
| v->stop.tv_sec = v->start.tv_sec + seconds; |
| v->stop.tv_usec = v->start.tv_usec; |
| osmo_timer_schedule(&v->timer, seconds, 0); |
| llist_add(&v->head, &timer_test_list); |
| printf("scheduled timer at %d.%06d\n", |
| (int)v->stop.tv_sec, (int)v->stop.tv_usec); |
| } |
| printf("added %d timers in step %u (expired=%u)\n", |
| add_in_this_step, *step, expired_timers); |
| total_timers += add_in_this_step; |
| osmo_timer_schedule(&main_timer, TIME_BETWEEN_STEPS, 0); |
| (*step)++; |
| } |
| |
| static void secondary_timer_fired(void *data) |
| { |
| struct test_timer *v = data, *this, *tmp; |
| struct timeval current, res; |
| struct timeval precision = { 0, TIME_BETWEEN_TIMER_CHECKS + 1}; |
| int i, deleted; |
| |
| osmo_gettimeofday(¤t, NULL); |
| |
| timersub(¤t, &v->stop, &res); |
| if (timercmp(&res, &precision, >)) { |
| printf("ERROR: timer has expired too late:" |
| " wanted %d.%06d now %d.%06d diff %d.%06d\n", |
| (int)v->stop.tv_sec, (int)v->stop.tv_usec, |
| (int)current.tv_sec, (int)current.tv_usec, |
| (int)res.tv_sec, (int)res.tv_usec); |
| too_late++; |
| } |
| else if (timercmp(¤t, &v->stop, <)) { |
| printf("ERROR: timer has expired too soon:" |
| " wanted %d.%06d now %d.%06d diff %d.%06d\n", |
| (int)v->stop.tv_sec, (int)v->stop.tv_usec, |
| (int)current.tv_sec, (int)current.tv_usec, |
| (int)res.tv_sec, (int)res.tv_usec); |
| too_soon++; |
| } |
| else |
| printf("timer fired on time: %d.%06d (+ %d.%06d)\n", |
| (int)v->stop.tv_sec, (int)v->stop.tv_usec, |
| (int)res.tv_sec, (int)res.tv_usec); |
| |
| llist_del(&v->head); |
| talloc_free(data); |
| expired_timers++; |
| if (expired_timers == total_timers) { |
| printf("test over: added=%u expired=%u too_soon=%u too_late=%u\n", |
| total_timers, expired_timers, too_soon, too_late); |
| exit(EXIT_SUCCESS); |
| } |
| |
| /* "random" deletion of timers. */ |
| i = 0; |
| deleted = 0; |
| llist_for_each_entry_safe(this, tmp, &timer_test_list, head) { |
| i ++; |
| if (!(i & 0x3)) { |
| osmo_timer_del(&this->timer); |
| llist_del(&this->head); |
| talloc_free(this); |
| deleted++; |
| } |
| } |
| expired_timers += deleted; |
| printf("early deleted %d timers, %d still active\n", deleted, |
| total_timers - expired_timers); |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| int c; |
| int steps; |
| |
| osmo_gettimeofday_override = true; |
| |
| while ((c = getopt_long(argc, argv, "s:", NULL, NULL)) != -1) { |
| switch(c) { |
| case 's': |
| timer_nsteps = atoi(optarg); |
| if (timer_nsteps <= 0) { |
| fprintf(stderr, "%s: steps must be > 0\n", |
| argv[0]); |
| exit(EXIT_FAILURE); |
| } |
| break; |
| default: |
| exit(EXIT_FAILURE); |
| } |
| } |
| |
| steps = ((MAIN_TIMER_NSTEPS * TIME_BETWEEN_STEPS + 20) * 1e6) |
| / TIME_BETWEEN_TIMER_CHECKS; |
| |
| printf("Running timer test for %d iterations," |
| " %d steps of %d msecs each\n", |
| timer_nsteps, steps, TIME_BETWEEN_TIMER_CHECKS / 1000); |
| |
| osmo_timer_setup(&main_timer, main_timer_fired, &main_timer_step); |
| osmo_timer_schedule(&main_timer, 1, 0); |
| |
| #ifdef HAVE_SYS_SELECT_H |
| while (steps--) { |
| printf("%d.%06d\n", (int)osmo_gettimeofday_override_time.tv_sec, |
| (int)osmo_gettimeofday_override_time.tv_usec); |
| osmo_timers_prepare(); |
| osmo_timers_update(); |
| osmo_gettimeofday_override_add(0, TIME_BETWEEN_TIMER_CHECKS); |
| } |
| #else |
| printf("Select not supported on this platform!\n"); |
| #endif |
| return 0; |
| } |