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gst/gstthread.c: Implement state-change error handling (#166073).

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Original commit message from CVS:
* gst/gstthread.c: (gst_thread_change_state):
Implement state-change error handling (#166073).
This commit is contained in:
Ronald S. Bultje 2005-02-08 14:04:31 +00:00
parent eb3c38de8c
commit 6a56e3080d
2 changed files with 26 additions and 8 deletions
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5
ChangeLog
View file

@ -1,3 +1,8 @@
2005-02-08 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* gst/gstthread.c: (gst_thread_change_state):
Implement state-change error handling (#166073).
2005-02-08 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* gst/gstqueue.c: (gst_queue_chain), (gst_queue_get):

29
gst/gstthread.c
View file

@ -419,7 +419,7 @@ gst_thread_change_state (GstElement * element)
GstThread *thread;
GstElementStateReturn ret;
gint transition;
gboolean is_self;
gboolean is_self, reverting = FALSE;
g_return_val_if_fail (GST_IS_THREAD (element), GST_STATE_FAILURE);
@ -432,7 +432,9 @@ gst_thread_change_state (GstElement * element)
/* boolean to check if we called the state change in the same thread as
* the iterate thread */
is_self = (thread == gst_thread_get_current ());
transition = GST_STATE_TRANSITION (element);
revert:
GST_LOG_OBJECT (thread, "grabbing lock");
g_mutex_lock (thread->lock);
@ -443,20 +445,22 @@ gst_thread_change_state (GstElement * element)
/* do not try to grab the lock if this method is called from the
* same thread as the iterate thread, the lock might be held and we
* might deadlock */
if (!is_self)
if (!is_self && !reverting)
g_mutex_lock (thread->iterate_lock);
transition = GST_STATE_TRANSITION (element);
switch (transition) {
case GST_STATE_NULL_TO_READY:
case GST_STATE_NULL_TO_READY:{
GError *err = NULL;
/* create the thread */
GST_FLAG_UNSET (thread, GST_THREAD_STATE_REAPING);
GST_LOG_OBJECT (element, "grabbing lock");
thread->thread_id = g_thread_create_full (gst_thread_main_loop,
thread, STACK_SIZE, FALSE, TRUE, thread->priority, NULL);
thread, STACK_SIZE, FALSE, TRUE, thread->priority, &err);
if (!thread->thread_id) {
GST_ERROR_OBJECT (element, "g_thread_create_full failed");
GST_ERROR_OBJECT (element, "g_thread_create_full failed: %s",
err->message);
g_error_free (err);
goto error_out;
}
GST_LOG_OBJECT (element, "GThread created");
@ -464,6 +468,7 @@ gst_thread_change_state (GstElement * element)
/* wait for it to 'spin up' */
g_cond_wait (thread->cond, thread->lock);
break;
}
case GST_STATE_READY_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_PLAYING:
@ -529,8 +534,15 @@ gst_thread_change_state (GstElement * element)
GST_LOG_OBJECT (thread, "unlocking lock");
g_mutex_unlock (thread->lock);
if (GST_ELEMENT_CLASS (parent_class)->change_state) {
if (reverting) {
goto error_out_unlocked;
} else if (GST_ELEMENT_CLASS (parent_class)->change_state) {
ret = GST_ELEMENT_CLASS (parent_class)->change_state (GST_ELEMENT (thread));
if (ret == GST_STATE_FAILURE) {
reverting = TRUE;
transition = ((transition & 0xff) << 8) | (transition >> 8);
goto revert;
}
} else {
ret = GST_STATE_SUCCESS;
}
@ -558,6 +570,7 @@ error_out:
g_mutex_unlock (thread->lock);
error_out_unlocked:
if (!is_self)
g_mutex_unlock (thread->iterate_lock);