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- /*
- * Test program which measures the time it takes to schedule and
- * remove timers.
- *
- * Copyright (C) 2013 by Open Source Routing.
- * Copyright (C) 2013 by Internet Systems Consortium, Inc. ("ISC")
- *
- * This file is part of Quagga
- *
- * Quagga 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, or (at your option) any
- * later version.
- *
- * Quagga 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 Quagga; see the file COPYING. If not, write to the Free
- * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
- */
- #include <zebra.h>
- #include <stdio.h>
- #include <unistd.h>
- #include "thread.h"
- #include "pqueue.h"
- #include "prng.h"
- #define SCHEDULE_TIMERS 1000000
- #define REMOVE_TIMERS 500000
- struct thread_master *master;
- static int dummy_func(struct thread *thread)
- {
- return 0;
- }
- int main(int argc, char **argv)
- {
- struct prng *prng;
- int i;
- struct thread **timers;
- struct timeval tv_start, tv_lap, tv_stop;
- unsigned long t_schedule, t_remove;
- master = thread_master_create();
- prng = prng_new(0);
- timers = calloc(SCHEDULE_TIMERS, sizeof(*timers));
- /* create thread structures so they won't be allocated during the
- * time measurement */
- for (i = 0; i < SCHEDULE_TIMERS; i++)
- timers[i] = thread_add_timer_msec(master, dummy_func, NULL, 0);
- for (i = 0; i < SCHEDULE_TIMERS; i++)
- thread_cancel(timers[i]);
- quagga_gettime(QUAGGA_CLK_MONOTONIC, &tv_start);
- for (i = 0; i < SCHEDULE_TIMERS; i++)
- {
- long interval_msec;
- interval_msec = prng_rand(prng) % (100 * SCHEDULE_TIMERS);
- timers[i] = thread_add_timer_msec(master, dummy_func,
- NULL, interval_msec);
- }
- quagga_gettime(QUAGGA_CLK_MONOTONIC, &tv_lap);
- for (i = 0; i < REMOVE_TIMERS; i++)
- {
- int index;
- index = prng_rand(prng) % SCHEDULE_TIMERS;
- if (timers[index])
- thread_cancel(timers[index]);
- timers[index] = NULL;
- }
- quagga_gettime(QUAGGA_CLK_MONOTONIC, &tv_stop);
- t_schedule = 1000 * (tv_lap.tv_sec - tv_start.tv_sec);
- t_schedule += (tv_lap.tv_usec - tv_start.tv_usec) / 1000;
- t_remove = 1000 * (tv_stop.tv_sec - tv_lap.tv_sec);
- t_remove += (tv_stop.tv_usec - tv_lap.tv_usec) / 1000;
- printf("Scheduling %d random timers took %ld.%03ld seconds.\n",
- SCHEDULE_TIMERS, t_schedule/1000, t_schedule%1000);
- printf("Removing %d random timers took %ld.%03ld seconds.\n",
- REMOVE_TIMERS, t_remove/1000, t_remove%1000);
- fflush(stdout);
- free(timers);
- thread_master_free(master);
- prng_free(prng);
- return 0;
- }
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