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plugins/elements/gstmultiqueue.*: Fix dead-lock in underrun_cb

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Original commit message from CVS:
* plugins/elements/gstmultiqueue.c:
* plugins/elements/gstmultiqueue.h:
Fix dead-lock in underrun_cb
This commit is contained in:
Thijs Vermeir 2008-06-25 15:39:02 +00:00
parent f99119cff6
commit e25fd35125
3 changed files with 38 additions and 14 deletions
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6
ChangeLog
View file

@ -1,3 +1,9 @@
2008-06-25 Thijs Vermeir <thijsvermeir@gmail.com>
* plugins/elements/gstmultiqueue.c:
* plugins/elements/gstmultiqueue.h:
Fix dead-lock in underrun_cb
2008-06-25 Wim Taymans <wim.taymans@collabora.co.uk>
* docs/design/part-states.txt:

45
plugins/elements/gstmultiqueue.c
View file

@ -1272,22 +1272,15 @@ compute_high_id (GstMultiQueue * mq)
#define IS_FILLED(format, value) ((sq->max_size.format) != 0 && \
(sq->max_size.format) <= (value))
/*
* GstSingleQueue functions
*/
static void
single_queue_overrun_cb (GstDataQueue * dq, GstSingleQueue * sq)
single_queue_overrun_cb_unlocked (GstDataQueue * dq, GstSingleQueue * sq)
{
GstMultiQueue *mq = sq->mqueue;
GList *tmp;
GstDataQueueSize size;
gboolean filled = TRUE;
gst_data_queue_get_level (sq->queue, &size);
GST_LOG_OBJECT (mq, "Single Queue %d is full", sq->id);
GST_MULTI_QUEUE_MUTEX_LOCK (mq);
mq->filled = FALSE;
/* if we have reached max visible we can maybe bump this
* if another queue is empty, skip this if we can't grow anymore
@ -1309,13 +1302,30 @@ single_queue_overrun_cb (GstDataQueue * dq, GstSingleQueue * sq)
}
}
/* check if the queue is still full */
filled = gst_data_queue_is_full (sq->queue);
mq->filled = gst_data_queue_is_full (sq->queue);
}
}
/*
* GstSingleQueue functions
*/
static void
single_queue_overrun_cb (GstDataQueue * dq, GstSingleQueue * sq)
{
GstMultiQueue *mq = sq->mqueue;
GST_LOG_OBJECT (mq, "Single Queue %d is full", sq->id);
GST_MULTI_QUEUE_MUTEX_LOCK (mq);
single_queue_overrun_cb_unlocked (dq, sq);
GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
if (filled) {
if (mq->filled) {
GST_DEBUG_OBJECT (mq, "A queue is filled, signalling overrun");
g_signal_emit (G_OBJECT (mq), gst_multi_queue_signals[SIGNAL_OVERRUN], 0);
mq->filled = FALSE;
}
}
@ -1338,9 +1348,8 @@ single_queue_underrun_cb (GstDataQueue * dq, GstSingleQueue * sq)
/* prevent data starvation */
if (gst_data_queue_is_full (ssq->queue)) {
single_queue_overrun_cb (dq, ssq);
all_empty = FALSE;
break;
single_queue_overrun_cb_unlocked (dq, ssq);
goto check_filled;
}
if (!gst_data_queue_is_empty (ssq->queue)) {
@ -1354,6 +1363,14 @@ single_queue_underrun_cb (GstDataQueue * dq, GstSingleQueue * sq)
GST_DEBUG_OBJECT (mq, "All queues are empty, signalling it");
g_signal_emit (G_OBJECT (mq), gst_multi_queue_signals[SIGNAL_UNDERRUN], 0);
}
return;
check_filled:
if (mq->filled) {
GST_DEBUG_OBJECT (mq, "A queue is filled, signalling overrun");
g_signal_emit (G_OBJECT (mq), gst_multi_queue_signals[SIGNAL_OVERRUN], 0);
mq->filled = FALSE;
}
}
static gboolean

1
plugins/elements/gstmultiqueue.h
View file

@ -68,6 +68,7 @@ struct _GstMultiQueue {
gint nextnotlinked; /* ID of the next queue not linked (-1 : none) */
gint numwaiting; /* number of not-linked pads waiting */
gboolean filled; /* overrun detected */
};
struct _GstMultiQueueClass {