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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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95 lines
3 KiB
C
95 lines
3 KiB
C
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/* GStreamer
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* Copyright (C) 2004 Wim Taymans <wim@fluendo.com>
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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 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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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <unistd.h>
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#include <gst/gst.h>
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static void
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handoff_identity (GstElement * element)
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{
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GstBin *parent;
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parent = GST_BIN (gst_element_get_parent (element));
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g_print ("identity handoff\n");
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gst_bin_remove (parent, element);
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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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GstElement *pipeline, *src, *sink, *id;
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gst_init (&argc, &argv);
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g_print ("setting up...\n");
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/* setup pipeline */
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pipeline = gst_element_factory_make ("pipeline", NULL);
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g_assert (pipeline);
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src = gst_element_factory_make ("fakesrc", NULL);
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g_assert (src);
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id = gst_element_factory_make ("identity", NULL);
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g_assert (id);
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/* ref object here as it will be unparented and destroyed in the
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* handoff signal, normally the scheduler should keep a ref to the
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* currently scheduled elements but that's another bug displayed in
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* 142183-2.c */
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gst_object_ref (GST_OBJECT (id));
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g_signal_connect (G_OBJECT (id), "handoff", (GCallback) handoff_identity,
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NULL);
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g_object_set (G_OBJECT (id), "loop-based", TRUE, NULL);
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sink = gst_element_factory_make ("fakesink", NULL);
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g_assert (sink);
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gst_bin_add_many (GST_BIN (pipeline), src, id, sink, NULL);
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/* this is what triggers the bug */
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gst_element_enable_threadsafe_properties (GST_ELEMENT (src));
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gst_element_enable_threadsafe_properties (GST_ELEMENT (id));
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gst_element_enable_threadsafe_properties (GST_ELEMENT (sink));
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gst_element_link_pads (src, "src", id, "sink");
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gst_element_link_pads (id, "src", sink, "sink");
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if (gst_element_set_state (pipeline, GST_STATE_PLAYING) != GST_STATE_SUCCESS)
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g_assert_not_reached ();
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gst_bin_iterate (GST_BIN (pipeline));
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gst_bin_iterate (GST_BIN (pipeline));
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/* 'cause we're going into deadlock mode */
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alarm (5);
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g_print ("adding identity back...\n");
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/* add identity back in */
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gst_bin_add_many (GST_BIN (pipeline), id, NULL);
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g_print ("going into possible deadlock... alarm at 5 seconds\n");
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gst_bin_iterate (GST_BIN (pipeline));
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gst_bin_iterate (GST_BIN (pipeline));
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g_print ("ok, no deadlock. bug 142183 fixed!\n");
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g_print ("cleaning up...\n");
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gst_object_unref (GST_OBJECT (pipeline));
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gst_object_unref (GST_OBJECT (id));
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src = id = sink = pipeline = NULL;
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g_print ("done.\n");
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return 0;
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}
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