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udpsrc: keep GCancellable fd around instead of re-creating it constantly

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Otherwise we constantly create/close event file descriptors,
every single time we call g_socket_condition_timed_wait() or
g_socket_receive_message(), i.e. twice per packet received!
This was not particularly good for performance.

Also only create GCancellable on start-up.
This commit is contained in:
Tim-Philipp Müller 2015-05-19 18:13:16 +01:00
parent 6d06a74f7f
commit 11bb21f3c2
2 changed files with 30 additions and 9 deletions
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35
gst/udp/gstudpsrc.c
View file

@ -323,8 +323,6 @@ gst_udpsrc_init (GstUDPSrc * udpsrc)
udpsrc->used_socket = UDP_DEFAULT_USED_SOCKET; udpsrc->used_socket = UDP_DEFAULT_USED_SOCKET;
udpsrc->reuse = UDP_DEFAULT_REUSE; udpsrc->reuse = UDP_DEFAULT_REUSE;
udpsrc->cancellable = g_cancellable_new ();
/* configure basesrc to be a live source */ /* configure basesrc to be a live source */
gst_base_src_set_live (GST_BASE_SRC (udpsrc), TRUE); gst_base_src_set_live (GST_BASE_SRC (udpsrc), TRUE);
/* make basesrc output a segment in time */ /* make basesrc output a segment in time */
@ -362,10 +360,6 @@ gst_udpsrc_finalize (GObject * object)
g_object_unref (udpsrc->used_socket); g_object_unref (udpsrc->used_socket);
udpsrc->used_socket = NULL; udpsrc->used_socket = NULL;
if (udpsrc->cancellable)
g_object_unref (udpsrc->cancellable);
udpsrc->cancellable = NULL;
G_OBJECT_CLASS (parent_class)->finalize (object); G_OBJECT_CLASS (parent_class)->finalize (object);
} }
@ -501,6 +495,26 @@ gst_udpsrc_ensure_mem (GstUDPSrc * src)
return TRUE; return TRUE;
} }
static void
gst_udpsrc_create_cancellable (GstUDPSrc * src)
{
GPollFD pollfd;
src->cancellable = g_cancellable_new ();
src->made_cancel_fd = g_cancellable_make_pollfd (src->cancellable, &pollfd);
}
static void
gst_udpsrc_free_cancellable (GstUDPSrc * src)
{
if (src->made_cancel_fd) {
g_cancellable_release_fd (src->cancellable);
src->made_cancel_fd = FALSE;
}
g_object_unref (src->cancellable);
src->cancellable = NULL;
}
static GstFlowReturn static GstFlowReturn
gst_udpsrc_create (GstPushSrc * psrc, GstBuffer ** buf) gst_udpsrc_create (GstPushSrc * psrc, GstBuffer ** buf)
{ {
@ -898,6 +912,8 @@ gst_udpsrc_open (GstUDPSrc * src)
GSocketAddress *bind_saddr; GSocketAddress *bind_saddr;
GError *err = NULL; GError *err = NULL;
gst_udpsrc_create_cancellable (src);
if (src->socket == NULL) { if (src->socket == NULL) {
/* need to allocate a socket */ /* need to allocate a socket */
GST_DEBUG_OBJECT (src, "allocating socket for %s:%d", src->address, GST_DEBUG_OBJECT (src, "allocating socket for %s:%d", src->address,
@ -1139,8 +1155,9 @@ gst_udpsrc_unlock_stop (GstBaseSrc * bsrc)
src = GST_UDPSRC (bsrc); src = GST_UDPSRC (bsrc);
GST_LOG_OBJECT (src, "No longer flushing"); GST_LOG_OBJECT (src, "No longer flushing");
g_object_unref (src->cancellable);
src->cancellable = g_cancellable_new (); gst_udpsrc_free_cancellable (src);
gst_udpsrc_create_cancellable (src);
return TRUE; return TRUE;
} }
@ -1184,6 +1201,8 @@ gst_udpsrc_close (GstUDPSrc * src)
gst_udpsrc_reset_memory_allocator (src); gst_udpsrc_reset_memory_allocator (src);
gst_udpsrc_free_cancellable (src);
return TRUE; return TRUE;
} }

4
gst/udp/gstudpsrc.h
View file

@ -66,10 +66,12 @@ struct _GstUDPSrc {
/* our sockets */ /* our sockets */
GSocket *used_socket; GSocket *used_socket;
GCancellable *cancellable;
GInetSocketAddress *addr; GInetSocketAddress *addr;
gboolean external_socket; gboolean external_socket;
gboolean made_cancel_fd;
GCancellable *cancellable;
/* memory management */ /* memory management */
GstAllocator *allocator; GstAllocator *allocator;
GstAllocationParams params; GstAllocationParams params;