From: Christophe de Dinechin <dinec...@redhat.com>
Experience has shown that if the machine running the guest is overloaded,
it may pile up a lot of backlog in the frames queue. This patch clears
the queue if it exceeds 100 entries. This value is arbitrary. It
corresponds to a few seconds on a highly overloaded machine.
Signed-off-by: Christophe de Dinechin <dinec...@redhat.com>
---
src/channel-display-gst.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/src/channel-display-gst.c b/src/channel-display-gst.c
index 3cf451b..17c2847 100644
--- a/src/channel-display-gst.c
+++ b/src/channel-display-gst.c
@@ -498,6 +498,9 @@ static void spice_gst_decoder_destroy(VideoDecoder
*video_decoder)
* 9) display_frame() then frees the SpiceGstFrame, which frees the SpiceFrame
* and decompressed frame with it.
*/
+
+SPICE_TWEAK_DEFINE(gst_queue_max_length, 100, "Max length of GStreamer queue");
+
static gboolean spice_gst_decoder_queue_frame(VideoDecoder *video_decoder,
SpiceFrame *frame, int latency)
{
@@ -541,6 +544,16 @@ static gboolean spice_gst_decoder_queue_frame(VideoDecoder
*video_decoder,
}
#endif
+ if (SPICE_TWEAK(gst_queue_max_length) &&
+ decoder->decoding_queue->length > SPICE_TWEAK(gst_queue_max_length)) {
+ SpiceGstFrame *gstframe;
+ g_mutex_lock(&decoder->queues_mutex);
+ while ((gstframe = g_queue_pop_head(decoder->decoding_queue)))
+ free_gst_frame(gstframe);
+ g_mutex_unlock(&decoder->queues_mutex);
+ return TRUE;
+ }
+
/* ref() the frame data for the buffer */
frame->ref_data(frame->data_opaque);
GstBuffer *buffer =
gst_buffer_new_wrapped_full(GST_MEMORY_FLAG_PHYSICALLY_CONTIGUOUS,
--
2.11.0 (Apple Git-81)
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