src/tests/flist-test.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   PulseAudio is free software; you can redistribute it and/or modify
   5   it under the terms of the GNU Lesser General Public License as published
   6   by the Free Software Foundation; either version 2.1 of the License,
   7   or (at your option) any later version.
   8
   9   PulseAudio is distributed in the hope that it will be useful, but
  10   WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12   General Public License for more details.
  13
  14   You should have received a copy of the GNU Lesser General Public License
  15   along with PulseAudio; if not, write to the Free Software
  16   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  17   USA.
  18 ***/
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include <config.h>
  22 #endif
  23
  24 #include <assert.h>
  25 #include <stdlib.h>
  26 #include <unistd.h>
  27
  28 #include <pulse/util.h>
  29 #include <pulse/xmalloc.h>
  30 #include <pulsecore/flist.h>
  31 #include <pulsecore/thread.h>
  32 #include <pulsecore/log.h>
  33 #include <pulsecore/core-util.h>
  34
  35 #define THREADS_MAX 20
  36
  37 static pa_flist *flist;
  38 static int quit = 0;
  39
  40 static void spin(void) {
  41     int k;
  42
  43     /* Spin a little */
  44     k = rand() % 10000;
  45     for (; k > 0; k--)
  46         pa_thread_yield();
  47 }
  48
  49 static void thread_func(void *data) {
  50     char *s = data;
  51     int n = 0;
  52     int b = 1;
  53
  54     while (!quit) {
  55         char *text;
  56
  57         /* Allocate some memory, if possible take it from the flist */
  58         if (b && (text = pa_flist_pop(flist)))
  59             pa_log("%s: popped '%s'", s, text);
  60         else {
  61             text = pa_sprintf_malloc("Block %i, allocated by %s", n++, s);
  62             pa_log("%s: allocated '%s'", s, text);
  63         }
  64
  65         b = !b;
  66
  67         spin();
  68
  69         /* Give it back to the flist if possible */
  70         if (pa_flist_push(flist, text) < 0) {
  71             pa_log("%s: failed to push back '%s'", s, text);
  72             pa_xfree(text);
  73         } else
  74             pa_log("%s: pushed", s);
  75
  76         spin();
  77     }
  78
  79     if (pa_flist_push(flist, s) < 0)
  80         pa_xfree(s);
  81 }
  82
  83 int main(int argc, char* argv[]) {
  84     pa_thread *threads[THREADS_MAX];
  85     int i;
  86
  87     flist = pa_flist_new(0);
  88
  89     for (i = 0; i < THREADS_MAX; i++) {
  90         threads[i] = pa_thread_new(thread_func, pa_sprintf_malloc("Thread #%i", i+1));
  91         assert(threads[i]);
  92     }
  93
  94     pa_msleep(60000);
  95     quit = 1;
  96
  97     for (i = 0; i < THREADS_MAX; i++)
  98         pa_thread_free(threads[i]);
  99
 100     pa_flist_free(flist, pa_xfree);
 101
 102     return 0;
 103 }