1 /* GStreamer
2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
3 * Copyright (C) <2004> Thomas Vander Stichele <thomas at apestaart dot org>
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 */
20
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <gst/gst.h>
24 #include "gst/glib-compat-private.h"
25
26 static GstPoll *set;
27 static GList *fds = NULL;
28 static GMutex fdlock;
29 static GTimer *timer;
30
31 #define MAX_THREADS 100
32
33 static void
mess_some_more(void)34 mess_some_more (void)
35 {
36 GList *walk;
37 gint random;
38 gint removed = 0;
39
40 g_mutex_lock (&fdlock);
41
42 for (walk = fds; walk;) {
43 GstPollFD *fd = (GstPollFD *) walk->data;
44
45 walk = g_list_next (walk);
46
47 random = (gint) (10.0 * rand () / (RAND_MAX + 1.0));
48 switch (random) {
49 case 0:
50 {
51 /*
52 GstPollFD *newfd = g_new0 (GstPollFD, 1);
53
54 gst_poll_add_fd (set, newfd);
55 fds = g_list_prepend (fds, newfd);
56 */
57 break;
58 }
59 case 1:
60 if ((gint) (10.0 * rand () / (RAND_MAX + 1.0)) < 2) {
61 gst_poll_remove_fd (set, fd);
62 fds = g_list_remove (fds, fd);
63 g_free (fd);
64 removed++;
65 }
66 break;
67
68 case 2:
69 gst_poll_fd_ctl_write (set, fd, TRUE);
70 break;
71 case 3:
72 gst_poll_fd_ctl_write (set, fd, FALSE);
73 break;
74 case 4:
75 gst_poll_fd_ctl_read (set, fd, TRUE);
76 break;
77 case 5:
78 gst_poll_fd_ctl_read (set, fd, FALSE);
79 break;
80
81 case 6:
82 gst_poll_fd_has_closed (set, fd);
83 break;
84 case 7:
85 gst_poll_fd_has_error (set, fd);
86 break;
87 case 8:
88 gst_poll_fd_can_read (set, fd);
89 break;
90 case 9:
91 gst_poll_fd_can_write (set, fd);
92 break;
93 default:
94 g_assert_not_reached ();
95 break;
96 }
97 }
98 if (g_list_length (fds) < 900) {
99 random = removed + (gint) (2.0 * rand () / (RAND_MAX + 1.0));
100 while (random) {
101 GstPollFD *newfd = g_new0 (GstPollFD, 1);
102
103 gst_poll_add_fd (set, newfd);
104 fds = g_list_prepend (fds, newfd);
105 random--;
106 }
107 }
108
109 g_mutex_unlock (&fdlock);
110 }
111
112 static void *
run_test(void * threadid)113 run_test (void *threadid)
114 {
115 gint id = GPOINTER_TO_INT (threadid);
116
117 while (TRUE) {
118 if (id == 0) {
119 gint res = gst_poll_wait (set, 10);
120
121 if (res < 0) {
122 g_print ("error %d %s\n", errno, g_strerror (errno));
123 }
124 } else {
125 mess_some_more ();
126 if (g_timer_elapsed (timer, NULL) > 0.5) {
127 g_mutex_lock (&fdlock);
128 g_print ("active fds :%u\n", g_list_length (fds));
129 g_timer_start (timer);
130 g_mutex_unlock (&fdlock);
131 }
132 g_usleep (1);
133 }
134 }
135
136 return NULL;
137 }
138
139 gint
main(gint argc,gchar * argv[])140 main (gint argc, gchar * argv[])
141 {
142 GThread *threads[MAX_THREADS];
143 gint num_threads;
144 gint t;
145
146 gst_init (&argc, &argv);
147
148 g_mutex_init (&fdlock);
149 timer = g_timer_new ();
150
151 if (argc != 2) {
152 g_print ("usage: %s <num_threads>\n", argv[0]);
153 exit (-1);
154 }
155
156 num_threads = atoi (argv[1]);
157
158 set = gst_poll_new (TRUE);
159
160 for (t = 0; t < num_threads; t++) {
161 GError *error = NULL;
162
163 threads[t] = g_thread_try_new ("pollstresstest", run_test,
164 GINT_TO_POINTER (t), &error);
165
166 if (error) {
167 printf ("ERROR: g_thread_try_new() %s\n", error->message);
168 g_clear_error (&error);
169 exit (-1);
170 }
171 }
172 printf ("main(): Created %d threads.\n", t);
173
174 for (t = 0; t < num_threads; t++) {
175 g_thread_join (threads[t]);
176 }
177
178 gst_poll_free (set);
179
180 return 0;
181 }
182