X-Git-Url: https://git.ozlabs.org/?a=blobdiff_plain;f=ccan%2Fio%2Fbackend.h;h=86db8c3d1de44983e3061bb33699a7783d69c88d;hb=bfb80c566ab695b70a404a419f4b1450a2fcf27a;hp=3c5b3f8b781bb38ab014fee995b9272ad4164c28;hpb=7a8a585c32d1010426f587a6933f05de7a06dfd0;p=ccan

diff --git a/ccan/io/backend.h b/ccan/io/backend.h
index 3c5b3f8b..86db8c3d 100644
--- a/ccan/io/backend.h
+++ b/ccan/io/backend.h
@@ -8,29 +8,27 @@ struct fd {
 	int fd;
 	bool listener;
 	size_t backend_info;
-
-	struct io_plan *(*next)(struct io_conn *, void *arg);
-	void *next_arg;
-
-	void (*finish)(struct io_conn *, void *arg);
-	void *finish_arg;
 };
 
 
 /* Listeners create connections. */
 struct io_listener {
 	struct fd fd;
-};
 
-enum io_state {
-	/* These wait for something to input */
-	READ,
-	READPART,
+	/* These are for connections we create. */
+	struct io_plan *(*next)(struct io_conn *, void *arg);
+	void (*finish)(struct io_conn *, void *arg);
+	void *conn_arg;
+};
 
-	/* These wait for room to output */
-	WRITE,
-	WRITEPART,
+enum io_result {
+	RESULT_AGAIN,
+	RESULT_FINISHED,
+	RESULT_CLOSE
+};
 
+enum io_state {
+	IO,
 	NEXT, /* eg starting, woken from idle, return from io_break. */
 	IDLE,
 	FINISHED,
@@ -74,9 +72,18 @@ struct io_timeout {
 struct io_conn {
 	struct fd fd;
 
+	struct io_plan *(*next)(struct io_conn *, void *arg);
+	void *next_arg;
+
+	void (*finish)(struct io_conn *, void *arg);
+	void *finish_arg;
+
 	struct io_conn *duplex;
 	struct io_timeout *timeout;
 
+	enum io_result (*io)(struct io_conn *conn);
+
+	int pollflag; /* 0, POLLIN or POLLOUT */
 	enum io_state state;
 	union {
 		struct io_state_read read;