kore

commit f8b3915ee13e63e169fc75ce98995c1b1f6d5808
parent fcc044af879e77a235eaba0f4535f95a3f35d3e3
Author: Joris Vink <joris@coders.se>
Date:   Sun, 24 Dec 2017 17:28:17 +0100

make kore_websocket_send() slightly faster.

build the frame in a kore_buf on the stack and use net_send_stream()
to push it out rather then making yet another copy in net_send().

saves several cpu cycles before the frame starts going out as
we're not allocating a kore_buf, its contents and then memcpy()ing
that contents to a new netbuf.

Diffstat:
src/websocket.c
 | 
14
+++++++++-----

1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/src/websocket.c b/src/websocket.c
@@ -138,12 +138,16 @@ void
 kore_websocket_send(struct connection *c, u_int8_t op, const void *data,
     size_t len)
 {
-	struct kore_buf		*frame;
+	struct kore_buf		frame;
 
-	frame = kore_buf_alloc(len);
-	websocket_frame_build(frame, op, data, len);
-	net_send_queue(c, frame->data, frame->offset);
-	kore_buf_free(frame);
+	kore_buf_init(&frame, len);
+
+	websocket_frame_build(&frame, op, data, len);
+	net_send_stream(c, frame.data, frame.offset, NULL, NULL);
+
+	/* net_send_stream() takes over the buffer data pointer. */
+	frame.data = NULL;
+	kore_buf_cleanup(&frame);
 
 	net_send_flush(c);
 }