mirror of
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178 lines
4 KiB
C
178 lines
4 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) <2004> Thomas Vander Stichele <thomas at apestaart dot org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <gst/gst.h>
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static GstPoll *set;
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static GList *fds = NULL;
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static GMutex *fdlock;
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static GTimer *timer;
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#define MAX_THREADS 100
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static void
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mess_some_more (void)
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{
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GList *walk;
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gint random;
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gint removed = 0;
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g_mutex_lock (fdlock);
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for (walk = fds; walk;) {
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GstPollFD *fd = (GstPollFD *) walk->data;
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walk = g_list_next (walk);
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random = (gint) (10.0 * rand () / (RAND_MAX + 1.0));
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switch (random) {
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case 0:
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{
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/*
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GstPollFD *newfd = g_new0 (GstPollFD, 1);
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gst_poll_add_fd (set, newfd);
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fds = g_list_prepend (fds, newfd);
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*/
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break;
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}
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case 1:
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if ((gint) (10.0 * rand () / (RAND_MAX + 1.0)) < 2) {
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gst_poll_remove_fd (set, fd);
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fds = g_list_remove (fds, fd);
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g_free (fd);
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removed++;
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}
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break;
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case 2:
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gst_poll_fd_ctl_write (set, fd, TRUE);
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break;
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case 3:
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gst_poll_fd_ctl_write (set, fd, FALSE);
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break;
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case 4:
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gst_poll_fd_ctl_read (set, fd, TRUE);
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break;
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case 5:
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gst_poll_fd_ctl_read (set, fd, FALSE);
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break;
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case 6:
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gst_poll_fd_has_closed (set, fd);
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break;
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case 7:
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gst_poll_fd_has_error (set, fd);
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break;
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case 8:
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gst_poll_fd_can_read (set, fd);
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break;
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case 9:
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gst_poll_fd_can_write (set, fd);
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break;
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default:
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g_assert_not_reached ();
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break;
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}
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}
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if (g_list_length (fds) < 900) {
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random = removed + (gint) (2.0 * rand () / (RAND_MAX + 1.0));
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while (random) {
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GstPollFD *newfd = g_new0 (GstPollFD, 1);
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gst_poll_add_fd (set, newfd);
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fds = g_list_prepend (fds, newfd);
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random--;
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}
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}
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g_mutex_unlock (fdlock);
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}
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static void *
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run_test (void *threadid)
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{
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gint id = GPOINTER_TO_INT (threadid);
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while (TRUE) {
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if (id == 0) {
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gint res = gst_poll_wait (set, 10);
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if (res < 0) {
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g_print ("error %d %s\n", errno, g_strerror (errno));
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}
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} else {
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mess_some_more ();
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if (g_timer_elapsed (timer, NULL) > 0.5) {
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g_mutex_lock (fdlock);
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g_print ("active fds :%d\n", g_list_length (fds));
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g_timer_start (timer);
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g_mutex_unlock (fdlock);
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}
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g_usleep (1);
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}
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}
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g_thread_exit (NULL);
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return NULL;
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}
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gint
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main (gint argc, gchar * argv[])
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{
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GThread *threads[MAX_THREADS];
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gint num_threads;
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gint t;
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gst_init (&argc, &argv);
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fdlock = g_mutex_new ();
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timer = g_timer_new ();
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if (argc != 2) {
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g_print ("usage: %s <num_threads>\n", argv[0]);
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exit (-1);
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}
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num_threads = atoi (argv[1]);
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set = gst_poll_new (TRUE);
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for (t = 0; t < num_threads; t++) {
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GError *error = NULL;
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threads[t] = g_thread_create (run_test, GINT_TO_POINTER (t), TRUE, &error);
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if (error) {
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printf ("ERROR: g_thread_create() %s\n", error->message);
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exit (-1);
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}
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}
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printf ("main(): Created %d threads.\n", t);
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for (t = 0; t < num_threads; t++) {
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g_thread_join (threads[t]);
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}
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gst_poll_free (set);
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return 0;
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}
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