src/test/timer.c

   1 /*****************************************************************************
   2  * timer.c: Test for timer API
   3  *****************************************************************************
   4  * Copyright (C) 2009 Rémi Denis-Courmont
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU Lesser General Public License as published by
   8  * the Free Software Foundation; either version 2.1 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  19  *****************************************************************************/
  20
  21 #ifdef HAVE_CONFIG_H
  22 # include "config.h"
  23 #endif
  24
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #undef NDEBUG
  28 #include <assert.h>
  29
  30 #include <vlc_common.h>
  31 #undef vlc_tick_sleep
  32
  33 const char vlc_module_name[] = "test_timer";
  34
  35 struct timer_data
  36 {
  37     vlc_timer_t timer;
  38     vlc_mutex_t lock;
  39     vlc_cond_t  wait;
  40     unsigned count;
  41 };
  42
  43 static void callback (void *ptr)
  44 {
  45     struct timer_data *data = ptr;
  46
  47     vlc_mutex_lock (&data->lock);
  48     data->count += 1 + vlc_timer_getoverrun (data->timer);
  49     vlc_cond_signal (&data->wait);
  50     vlc_mutex_unlock (&data->lock);
  51 }
  52
  53
  54 int main (void)
  55 {
  56     struct timer_data data;
  57     vlc_tick_t ts;
  58     int val;
  59
  60     vlc_mutex_init (&data.lock);
  61     vlc_cond_init (&data.wait);
  62     data.count = 0;
  63
  64     val = vlc_timer_create (&data.timer, callback, &data);
  65     assert (val == 0);
  66     vlc_timer_destroy (data.timer);
  67     assert (data.count == 0);
  68
  69     val = vlc_timer_create (&data.timer, callback, &data);
  70     assert (val == 0);
  71     vlc_timer_schedule (data.timer, false, CLOCK_FREQ << 20, CLOCK_FREQ);
  72     vlc_timer_destroy (data.timer);
  73     assert (data.count == 0);
  74
  75     val = vlc_timer_create (&data.timer, callback, &data);
  76     assert (val == 0);
  77
  78     /* Relative timer */
  79     ts = vlc_tick_now ();
  80     vlc_timer_schedule (data.timer, false, 1, VLC_TICK_FROM_MS(10));
  81
  82     vlc_mutex_lock (&data.lock);
  83     while (data.count <= 10)
  84         vlc_cond_wait(&data.wait, &data.lock);
  85
  86     ts = vlc_tick_now () - ts;
  87     printf ("%u iterations in %"PRId64" us\n", data.count, ts);
  88     data.count = 0;
  89     vlc_mutex_unlock (&data.lock);
  90     assert(ts >= VLC_TICK_FROM_MS(100));
  91
  92     vlc_timer_disarm (data.timer);
  93
  94     /* Absolute timer */
  95     ts = vlc_tick_now ();
  96
  97     vlc_timer_schedule (data.timer, true, ts + VLC_TICK_FROM_MS(100),
  98                         VLC_TICK_FROM_MS(10));
  99
 100     vlc_mutex_lock (&data.lock);
 101     while (data.count <= 10)
 102         vlc_cond_wait(&data.wait, &data.lock);
 103
 104     ts = vlc_tick_now () - ts;
 105     printf ("%u iterations in %"PRId64" us\n", data.count, ts);
 106     vlc_mutex_unlock (&data.lock);
 107     assert(ts >= VLC_TICK_FROM_MS(200));
 108
 109     vlc_timer_destroy (data.timer);
 110     return 0;
 111 }