gst/tcp/gstmultifdsink.c: clean up the bufqueue when shutting down

Original commit message from CVS:

* gst/tcp/gstmultifdsink.c: (gst_multi_fd_sink_stop):
clean up the bufqueue when shutting down
* tests/check/Makefile.am:
* tests/check/elements/multifdsink.c: (setup_multifdsink),
(cleanup_multifdsink), (GST_START_TEST), (multifdsink_suite),
(main):
add a test for the leak that was just fixed

ChangeLog

@@ -1,3 +1,13 @@
+2006-05-10  Thomas Vander Stichele  <thomas at apestaart dot org>
+
+	* gst/tcp/gstmultifdsink.c: (gst_multi_fd_sink_stop):
+	  clean up the bufqueue when shutting down
+	* tests/check/Makefile.am:
+	* tests/check/elements/multifdsink.c: (setup_multifdsink),
+	(cleanup_multifdsink), (GST_START_TEST), (multifdsink_suite),
+	(main):
+	  add a test for the leak that was just fixed
+
 2006-05-10  Wim Taymans  <wim@fluendo.com>
 
 	* gst/adder/gstadder.c: (gst_adder_setcaps),

gst/tcp/gstmultifdsink.c

@@ -655,6 +655,8 @@ gst_multi_fd_sink_remove (GstMultiFdSink * sink, int fd)
   CLIENTS_UNLOCK (sink);
 }
 
+/* can be called both through the signal (ie from any thread) or when stopping,
+ * after the writing thread has shut down */
 void
 gst_multi_fd_sink_clear (GstMultiFdSink * sink)
 {
@@ -1859,6 +1861,8 @@ gst_multi_fd_sink_stop (GstBaseSink * bsink)
 {
   GstMultiFdSinkClass *fclass;
   GstMultiFdSink *this;
+  GstBuffer *buf;
+  int i;
 
   this = GST_MULTI_FD_SINK (bsink);
   fclass = GST_MULTI_FD_SINK_GET_CLASS (this);
@@ -1870,7 +1874,9 @@ gst_multi_fd_sink_stop (GstBaseSink * bsink)
 
   SEND_COMMAND (this, CONTROL_STOP);
   if (this->thread) {
+    GST_DEBUG_OBJECT (this, "joining thread");
     g_thread_join (this->thread);
+    GST_DEBUG_OBJECT (this, "joined thread");
     this->thread = NULL;
   }
 
@@ -1895,6 +1901,20 @@ gst_multi_fd_sink_stop (GstBaseSink * bsink)
     this->fdset = NULL;
   }
   g_hash_table_foreach_remove (this->fd_hash, multifdsink_hash_remove, this);
+
+  /* remove all queued buffers */
+  if (this->bufqueue) {
+    GST_DEBUG_OBJECT (this, "Emptying bufqueue with %d buffers",
+        this->bufqueue->len);
+    for (i = this->bufqueue->len - 1; i >= 0; --i) {
+      buf = g_array_index (this->bufqueue, GstBuffer *, i);
+      GST_LOG_OBJECT (this, "Removing buffer %p (%d) with refcount %d", buf, i,
+          GST_MINI_OBJECT_REFCOUNT (buf));
+      gst_buffer_unref (buf);
+      this->bufqueue = g_array_remove_index (this->bufqueue, i);
+    }
+    /* freeing the array is done in _finalize */
+  }
   GST_OBJECT_FLAG_UNSET (this, GST_MULTI_FD_SINK_OPEN);
 
   return TRUE;

tests/check/Makefile.am

@@ -38,6 +38,7 @@ check_PROGRAMS = $(check_vorbis) \
 	elements/audioconvert \
 	elements/audioresample \
 	elements/audiotestsrc \
+	elements/multifdsink \
 	elements/videorate \
 	elements/videotestsrc \
 	elements/volume \

tests/check/elements/multifdsink.c

@@ -0,0 +1,100 @@
+/* GStreamer
+ *
+ * Copyright (C) 2006 Thomas Vander Stichele <thomas at apestaart dot org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <unistd.h>
+
+#include <gst/check/gstcheck.h>
+
+GstPad *mysrcpad;
+
+static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("application/x-gdp")
+    );
+
+GstElement *
+setup_multifdsink ()
+{
+  GstElement *multifdsink;
+
+  GST_DEBUG ("setup_multifdsink");
+  multifdsink = gst_check_setup_element ("multifdsink");
+  mysrcpad = gst_check_setup_src_pad (multifdsink, &srctemplate, NULL);
+
+  return multifdsink;
+}
+
+void
+cleanup_multifdsink (GstElement * multifdsink)
+{
+  GST_DEBUG ("cleanup_multifdsink");
+
+  gst_check_teardown_src_pad (multifdsink);
+  gst_check_teardown_element (multifdsink);
+}
+
+GST_START_TEST (test_no_clients)
+{
+  GstElement *sink;
+  GstBuffer *buffer;
+
+  sink = setup_multifdsink ();
+
+  ASSERT_SET_STATE (sink, GST_STATE_PLAYING, GST_STATE_CHANGE_ASYNC);
+
+  buffer = gst_buffer_new_and_alloc (4);
+  fail_unless (gst_pad_push (mysrcpad, buffer) == GST_FLOW_OK);
+
+  GST_DEBUG ("cleaning up multifdsink");
+  ASSERT_SET_STATE (sink, GST_STATE_NULL, GST_STATE_CHANGE_SUCCESS);
+  cleanup_multifdsink (sink);
+}
+
+GST_END_TEST;
+
+Suite *
+multifdsink_suite (void)
+{
+  Suite *s = suite_create ("multifdsink");
+  TCase *tc_chain = tcase_create ("general");
+
+  suite_add_tcase (s, tc_chain);
+  tcase_add_test (tc_chain, test_no_clients);
+
+  return s;
+}
+
+int
+main (int argc, char **argv)
+{
+  int nf;
+
+  Suite *s = multifdsink_suite ();
+  SRunner *sr = srunner_create (s);
+
+  gst_check_init (&argc, &argv);
+
+  srunner_run_all (sr, CK_NORMAL);
+  nf = srunner_ntests_failed (sr);
+  srunner_free (sr);
+
+  return nf;
+}