X-Git-Url: http://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Fio%2Fbackend.h;h=2b41fa72864ca1df0ac16b2afa023e2cfcd1856c;hp=06427eb6fa37ea53aabfb47725211e8a448756b8;hb=a2dffefa5ef8d0cf71d99755c4640a8004679b1d;hpb=8d97cddd18f504409ddb66dfe396798c99c2dfbd

diff --git a/ccan/io/backend.h b/ccan/io/backend.h
index 06427eb6..2b41fa72 100644
--- a/ccan/io/backend.h
+++ b/ccan/io/backend.h
@@ -22,11 +22,15 @@ struct io_listener {
 };
 
 enum io_state {
-	NEXT, /* eg starting, woken from idle, return from io_break. */
+	/* These wait for something to input */
 	READ,
-	WRITE,
 	READPART,
+
+	/* These wait for room to output */
+	WRITE,
 	WRITEPART,
+
+	NEXT, /* eg starting, woken from idle, return from io_break. */
 	IDLE,
 	FINISHED,
 	PROCESSING /* We expect them to change this now. */
@@ -61,6 +65,8 @@ struct io_state_writepart {
 struct io_conn {
 	struct fd fd;
 
+	struct io_conn *duplex;
+
 	enum io_state state;
 	union {
 		struct io_state_read read;
@@ -74,9 +80,9 @@ extern void *io_loop_return;
 
 bool add_listener(struct io_listener *l);
 bool add_conn(struct io_conn *c);
+bool add_duplex(struct io_conn *c);
 void del_listener(struct io_listener *l);
 void backend_set_state(struct io_conn *conn, struct io_op *op);
 
-struct io_op *do_writeable(struct io_conn *conn);
-struct io_op *do_readable(struct io_conn *conn);
+struct io_op *do_ready(struct io_conn *conn);
 #endif /* CCAN_IO_BACKEND_H */