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 msleep
  32
  33 struct timer_data
  34 {
  35     vlc_timer_t timer;
  36     vlc_mutex_t lock;
  37     vlc_cond_t  wait;
  38     unsigned count;
  39 };
  40
  41 static void callback (void *ptr)
  42 {
  43     struct timer_data *data = ptr;
  44
  45     vlc_mutex_lock (&data->lock);
  46     data->count += 1 + vlc_timer_getoverrun (data->timer);
  47     vlc_cond_signal (&data->wait);
  48     vlc_mutex_unlock (&data->lock);
  49 }
  50
  51
  52 int main (void)
  53 {
  54     struct timer_data data;
  55     mtime_t ts;
  56     int val;
  57
  58     vlc_mutex_init (&data.lock);
  59     vlc_cond_init (&data.wait);
  60     data.count = 0;
  61
  62     val = vlc_timer_create (&data.timer, callback, &data);
  63     assert (val == 0);
  64     vlc_timer_destroy (data.timer);
  65     assert (data.count == 0);
  66
  67     val = vlc_timer_create (&data.timer, callback, &data);
  68     assert (val == 0);
  69     vlc_timer_schedule (data.timer, false, CLOCK_FREQ << 20, CLOCK_FREQ);
  70     vlc_timer_destroy (data.timer);
  71     assert (data.count == 0);
  72
  73     val = vlc_timer_create (&data.timer, callback, &data);
  74     assert (val == 0);
  75
  76     /* Relative timer */
  77     ts = mdate ();
  78     vlc_timer_schedule (data.timer, false, 1, CLOCK_FREQ / 100);
  79
  80     vlc_mutex_lock (&data.lock);
  81     while (data.count <= 10)
  82         vlc_cond_wait(&data.wait, &data.lock);
  83
  84     ts = mdate () - ts;
  85     printf ("%u iterations in %"PRId64" us\n", data.count, ts);
  86     data.count = 0;
  87     vlc_mutex_unlock (&data.lock);
  88     assert(ts >= (CLOCK_FREQ / 10));
  89
  90     vlc_timer_schedule (data.timer, false, 0, 0);
  91
  92     /* Absolute timer */
  93     ts = mdate ();
  94
  95     vlc_timer_schedule (data.timer, true, ts + CLOCK_FREQ / 10,
  96                         CLOCK_FREQ / 100);
  97
  98     vlc_mutex_lock (&data.lock);
  99     while (data.count <= 10)
 100         vlc_cond_wait(&data.wait, &data.lock);
 101
 102     ts = mdate () - ts;
 103     printf ("%u iterations in %"PRId64" us\n", data.count, ts);
 104     vlc_mutex_unlock (&data.lock);
 105     assert(ts >= (CLOCK_FREQ / 5));
 106
 107     vlc_timer_destroy (data.timer);
 108     vlc_cond_destroy (&data.wait);
 109     vlc_mutex_destroy (&data.lock);
 110
 111     return 0;
 112 }