ccan/io: remove conn arg from io_plan constructors.

No longer needed.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io/_info

@@ -40,14 +40,14 @@
  * {
  * 	assert(c == b->reader);
  * 	b->len = sizeof(b->inbuf);
- * 	return io_read_partial(c, b->inbuf, &b->len, wake_writer, b);
+ * 	return io_read_partial(b->inbuf, &b->len, wake_writer, b);
  * }
  *
  * static struct io_plan wake_writer(struct io_conn *c, struct stdin_buffer *b)
  * {
  * 	assert(c == b->reader);
  * 	io_wake(b->writer, write_to_child, b);
- * 	return io_idle(c);
+ * 	return io_idle();
  * }
  *
  * static void reader_exit(struct io_conn *c, struct stdin_buffer *b)
@@ -61,7 +61,7 @@
  * {
  * 	assert(c == b->writer);
  * 	io_wake(b->reader, read_stdin, b);
- * 	return io_idle(c);
+ * 	return io_idle();
  * }
  *
  * static struct io_plan write_to_child(struct io_conn *conn,
@@ -70,14 +70,14 @@
  * 	assert(conn == b->writer);
  * 	if (!b->reader)
  * 		return io_close(conn, NULL);
- * 	return io_write(conn, b->inbuf, b->len, wake_reader, b);
+ * 	return io_write(b->inbuf, b->len, wake_reader, b);
  * }
  *
  * static struct io_plan start_writer(struct io_conn *conn,
  * 				      struct stdin_buffer *b)
  * {
  * 	assert(conn == b->writer);
- * 	return io_idle(conn);
+ * 	return io_idle();
  * }
  *
  * static void fail_child_write(struct io_conn *conn, struct stdin_buffer *b)
@@ -103,8 +103,7 @@
  * 	}
  *
  * 	b->rlen = b->max - b->off;
- * 	return io_read_partial(conn, b->buf + b->off, &b->rlen,
- *			       read_from_child, b);
+ * 	return io_read_partial(b->buf + b->off, &b->rlen, read_from_child, b);
  * }
  *
  * // Feed a program our stdin, gather its stdout, print that at end.

ccan/io/io.c

@@ -129,7 +129,7 @@ static enum io_result do_write(struct io_conn *conn)
 }
 
 /* Queue some data to be written. */
-struct io_plan io_write_(struct io_conn *conn, const void *data, size_t len,
+struct io_plan io_write_(const void *data, size_t len,
 			 struct io_plan (*cb)(struct io_conn *, void *),
 			 void *arg)
 {
@@ -160,7 +160,7 @@ static enum io_result do_read(struct io_conn *conn)
 }
 
 /* Queue a request to read into a buffer. */
-struct io_plan io_read_(struct io_conn *conn, void *data, size_t len,
+struct io_plan io_read_(void *data, size_t len,
 			struct io_plan (*cb)(struct io_conn *, void *),
 			void *arg)
 {
@@ -187,7 +187,7 @@ static enum io_result do_read_partial(struct io_conn *conn)
 }
 
 /* Queue a partial request to read into a buffer. */
-struct io_plan io_read_partial_(struct io_conn *conn, void *data, size_t *len,
+struct io_plan io_read_partial_(void *data, size_t *len,
 				struct io_plan (*cb)(struct io_conn *, void *),
 				void *arg)
 {
@@ -215,8 +215,7 @@ static enum io_result do_write_partial(struct io_conn *conn)
 }
 
 /* Queue a partial write request. */
-struct io_plan io_write_partial_(struct io_conn *conn,
-				 const void *data, size_t *len,
+struct io_plan io_write_partial_(const void *data, size_t *len,
 				 struct io_plan (*cb)(struct io_conn*, void *),
 				 void *arg)
 {
@@ -233,7 +232,7 @@ struct io_plan io_write_partial_(struct io_conn *conn,
 	return plan;
 }
 
-struct io_plan io_idle(struct io_conn *conn)
+struct io_plan io_idle(void)
 {
 	struct io_plan plan;
 
@@ -293,7 +292,7 @@ struct io_plan io_close(struct io_conn *conn, void *arg)
 }
 
 /* Exit the loop, returning this (non-NULL) arg. */
-struct io_plan io_break_(struct io_conn *conn, void *ret,
+struct io_plan io_break_(void *ret,
 			 struct io_plan (*fn)(struct io_conn *, void *),
 			 void *arg)
 {

ccan/io/io.h

@@ -127,7 +127,6 @@ void io_close_listener(struct io_listener *listener);
 
 /**
  * io_write - queue data to be written.
- * @conn: the current connection.
  * @data: the data buffer.
  * @len: the length to write.
  * @cb: function to call once it's done.
@@ -139,18 +138,17 @@ void io_close_listener(struct io_listener *listener);
  *
  * Note that the I/O may actually be done immediately.
  */
-#define io_write(conn, data, len, cb, arg)				\
-	io_write_((conn), (data), (len),				\
+#define io_write(data, len, cb, arg)					\
+	io_write_((data), (len),					\
 		  typesafe_cb_preargs(struct io_plan, void *,		\
 				      (cb), (arg), struct io_conn *),	\
 		  (arg))
-struct io_plan io_write_(struct io_conn *conn, const void *data, size_t len,
+struct io_plan io_write_(const void *data, size_t len,
 			 struct io_plan (*cb)(struct io_conn *, void *),
 			 void *arg);
 
 /**
  * io_read - queue buffer to be read.
- * @conn: the current connection.
  * @data: the data buffer.
  * @len: the length to read.
  * @cb: function to call once it's done.
@@ -162,19 +160,18 @@ struct io_plan io_write_(struct io_conn *conn, const void *data, size_t len,
  *
  * Note that the I/O may actually be done immediately.
  */
-#define io_read(conn, data, len, cb, arg)				\
-	io_read_((conn), (data), (len),					\
+#define io_read(data, len, cb, arg)					\
+	io_read_((data), (len),						\
 		 typesafe_cb_preargs(struct io_plan, void *,		\
 				     (cb), (arg), struct io_conn *),	\
 		 (arg))
-struct io_plan io_read_(struct io_conn *conn, void *data, size_t len,
+struct io_plan io_read_(void *data, size_t len,
 			struct io_plan (*cb)(struct io_conn *, void *),
 			void *arg);
 
 
 /**
  * io_read_partial - queue buffer to be read (partial OK).
- * @conn: the current connection.
  * @data: the data buffer.
  * @len: the maximum length to read, set to the length actually read.
  * @cb: function to call once it's done.
@@ -186,18 +183,17 @@ struct io_plan io_read_(struct io_conn *conn, void *data, size_t len,
  *
  * Note that the I/O may actually be done immediately.
  */
-#define io_read_partial(conn, data, len, cb, arg)			\
-	io_read_partial_((conn), (data), (len),				\
+#define io_read_partial(data, len, cb, arg)				\
+	io_read_partial_((data), (len),					\
 			 typesafe_cb_preargs(struct io_plan, void *,	\
 					     (cb), (arg), struct io_conn *), \
 			 (arg))
-struct io_plan io_read_partial_(struct io_conn *conn, void *data, size_t *len,
+struct io_plan io_read_partial_(void *data, size_t *len,
 				struct io_plan (*cb)(struct io_conn *, void *),
 				void *arg);
 
 /**
  * io_write_partial - queue data to be written (partial OK).
- * @conn: the current connection.
  * @data: the data buffer.
  * @len: the maximum length to write, set to the length actually written.
  * @cb: function to call once it's done.
@@ -209,26 +205,24 @@ struct io_plan io_read_partial_(struct io_conn *conn, void *data, size_t *len,
  *
  * Note that the I/O may actually be done immediately.
  */
-#define io_write_partial(conn, data, len, cb, arg)			\
-	io_write_partial_((conn), (data), (len),			\
+#define io_write_partial(data, len, cb, arg)				\
+	io_write_partial_((data), (len),				\
 			  typesafe_cb_preargs(struct io_plan, void *,	\
 					      (cb), (arg), struct io_conn *), \
 			  (arg))
-struct io_plan io_write_partial_(struct io_conn *conn,
-				 const void *data, size_t *len,
+struct io_plan io_write_partial_(const void *data, size_t *len,
 				 struct io_plan (*cb)(struct io_conn *, void*),
 				 void *arg);
 
 
 /**
  * io_idle - explicitly note that this connection will do nothing.
- * @conn: the current connection.
  *
  * This indicates the connection is idle: some other function will
  * later call io_read/io_write etc. (or io_close) on it, in which case
  * it will do that.
  */
-struct io_plan io_idle(struct io_conn *conn);
+struct io_plan io_idle(void);
 
 /**
  * io_timeout - set timeout function if the callback doesn't fire.
@@ -299,7 +293,6 @@ void io_wake_(struct io_conn *conn,
 
 /**
  * io_break - return from io_loop()
- * @conn: the current connection.
  * @ret: non-NULL value to return from io_loop().
  * @cb: function to call once on return
  * @arg: @cb argument
@@ -310,12 +303,12 @@ void io_wake_(struct io_conn *conn,
  *
  * If io_loop() is called again, then @cb will be called.
  */
-#define io_break(conn, ret, fn, arg)					\
-	io_break_((conn), (ret),					\
+#define io_break(ret, fn, arg)						\
+	io_break_((ret),						\
 		  typesafe_cb_preargs(struct io_plan, void *,		\
 				      (fn), (arg), struct io_conn *),	\
 		  (arg))
-struct io_plan io_break_(struct io_conn *conn, void *ret,
+struct io_plan io_break_(void *ret,
 			 struct io_plan (*fn)(struct io_conn *, void *),
 			 void *arg);
 

ccan/io/test/run-01-start-finish.c

@@ -17,7 +17,7 @@ static void finish_ok(struct io_conn *conn, int *state)
 {
 	ok1(*state == 1);
 	(*state)++;
-	io_break(conn, state + 1, NULL, NULL);
+	io_break(state + 1, NULL, NULL);
 }
 
 static int make_listen_fd(const char *port, struct addrinfo **info)

ccan/io/test/run-02-read.c

@@ -15,14 +15,14 @@ static struct io_plan start_ok(struct io_conn *conn, struct data *d)
 {
 	ok1(d->state == 0);
 	d->state++;
-	return io_read(conn, d->buf, sizeof(d->buf), io_close, d);
+	return io_read(d->buf, sizeof(d->buf), io_close, d);
 }
 
 static void finish_ok(struct io_conn *conn, struct data *d)
 {
 	ok1(d->state == 1);
 	d->state++;
-	io_break(conn, d, NULL, NULL);
+	io_break(d, NULL, NULL);
 }
 
 static int make_listen_fd(const char *port, struct addrinfo **info)

ccan/io/test/run-03-readpartial.c

@@ -17,14 +17,14 @@ static struct io_plan start_ok(struct io_conn *conn, struct data *d)
 	ok1(d->state == 0);
 	d->state++;
 	d->bytes = sizeof(d->buf);
-	return io_read_partial(conn, d->buf, &d->bytes, io_close, d);
+	return io_read_partial(d->buf, &d->bytes, io_close, d);
 }
 
 static void finish_ok(struct io_conn *conn, struct data *d)
 {
 	ok1(d->state == 1);
 	d->state++;
-	io_break(conn, d, NULL, NULL);
+	io_break(d, NULL, NULL);
 }
 
 static int make_listen_fd(const char *port, struct addrinfo **info)

ccan/io/test/run-04-writepartial.c

@@ -16,14 +16,14 @@ static struct io_plan start_ok(struct io_conn *conn, struct data *d)
 {
 	ok1(d->state == 0);
 	d->state++;
-	return io_write_partial(conn, d->buf, &d->bytes, io_close, d);
+	return io_write_partial(d->buf, &d->bytes, io_close, d);
 }
 
 static void finish_ok(struct io_conn *conn, struct data *d)
 {
 	ok1(d->state == 1);
 	d->state++;
-	io_break(conn, d, NULL, NULL);
+	io_break(d, NULL, NULL);
 }
 
 static int make_listen_fd(const char *port, struct addrinfo **info)

ccan/io/test/run-05-write.c

@@ -16,14 +16,14 @@ static struct io_plan start_ok(struct io_conn *conn, struct data *d)
 {
 	ok1(d->state == 0);
 	d->state++;
-	return io_write(conn, d->buf, d->bytes, io_close, d);
+	return io_write(d->buf, d->bytes, io_close, d);
 }
 
 static void finish_ok(struct io_conn *conn, struct data *d)
 {
 	ok1(d->state == 1);
 	d->state++;
-	io_break(conn, d, NULL, NULL);
+	io_break(d, NULL, NULL);
 }
 
 static int make_listen_fd(const char *port, struct addrinfo **info)

ccan/io/test/run-06-idle.c

@@ -20,7 +20,7 @@ static struct io_plan plan_read(struct io_conn *conn, struct data *d)
 {
 	ok1(d->state == 2 || d->state == 3);
 	d->state++;
-	return io_read(conn, d->buf, sizeof(d->buf), io_close, d);
+	return io_read(d->buf, sizeof(d->buf), io_close, d);
 }
 
 static struct io_plan start_waker(struct io_conn *conn, struct data *d)
@@ -51,14 +51,14 @@ static struct io_plan start_idle(struct io_conn *conn, struct data *d)
 	ok1(fd >= 0);
 	ok1(io_new_conn(fd, start_waker, finish_waker, d));
 
-	return io_idle(conn);
+	return io_idle();
 }
 
 static void finish_idle(struct io_conn *conn, struct data *d)
 {
 	ok1(d->state == 4);
 	d->state++;
-	io_break(conn, d, NULL, NULL);
+	io_break(d, NULL, NULL);
 }
 
 static int make_listen_fd(const char *port, struct addrinfo **info)

ccan/io/test/run-07-break.c

@@ -15,14 +15,14 @@ static struct io_plan plan_read(struct io_conn *conn, struct data *d)
 {
 	ok1(d->state == 1);
 	d->state++;
-	return io_read(conn, d->buf, sizeof(d->buf), io_close, d);
+	return io_read(d->buf, sizeof(d->buf), io_close, d);
 }
 
 static struct io_plan start_break(struct io_conn *conn, struct data *d)
 {
 	ok1(d->state == 0);
 	d->state++;
-	return io_break(conn, d, plan_read, d);
+	return io_break(d, plan_read, d);
 }
 
 static void finish_ok(struct io_conn *conn, struct data *d)

ccan/io/test/run-10-many.c

@@ -22,16 +22,14 @@ static struct io_plan plan_read(struct io_conn *conn, struct buffer *buf)
 {
 	assert(conn == buf->reader);
 
-	return io_read(conn, &buf->buf, sizeof(buf->buf),
-		       poke_writer, buf);
+	return io_read(&buf->buf, sizeof(buf->buf), poke_writer, buf);
 }
 
 static struct io_plan plan_write(struct io_conn *conn, struct buffer *buf)
 {
 	assert(conn == buf->writer);
 
-	return io_write(conn, &buf->buf, sizeof(buf->buf),
-			poke_reader, buf);
+	return io_write(&buf->buf, sizeof(buf->buf), poke_reader, buf);
 }
 
 static struct io_plan poke_writer(struct io_conn *conn, struct buffer *buf)
@@ -45,7 +43,7 @@ static struct io_plan poke_writer(struct io_conn *conn, struct buffer *buf)
 	io_wake(buf->writer, plan_write, buf);
 
 	/* I'll wait until you wake me. */
-	return io_idle(conn);
+	return io_idle();
 }
 
 static struct io_plan poke_reader(struct io_conn *conn, struct buffer *buf)
@@ -58,7 +56,7 @@ static struct io_plan poke_reader(struct io_conn *conn, struct buffer *buf)
 		return io_close(conn, NULL);
 
 	/* I'll wait until you tell me to write. */
-	return io_idle(conn);
+	return io_idle();
 }
 
 static struct io_plan reader(struct io_conn *conn, struct buffer *buf)
@@ -66,7 +64,7 @@ static struct io_plan reader(struct io_conn *conn, struct buffer *buf)
 	assert(conn == buf->reader);
 
 	/* Wait for writer to tell us to read. */
-	return io_idle(conn);
+	return io_idle();
 }
 
 static struct buffer buf[NUM];

ccan/io/test/run-12-bidir.c

@@ -21,7 +21,7 @@ static void finish_ok(struct io_conn *conn, struct data *d)
 static struct io_plan write_out(struct io_conn *conn, struct data *d)
 {
 	d->state++;
-	return io_write(conn, d->wbuf, sizeof(d->wbuf), io_close, d);
+	return io_write(d->wbuf, sizeof(d->wbuf), io_close, d);
 }
 
 static struct io_plan start_ok(struct io_conn *conn, struct data *d)
@@ -33,7 +33,7 @@ static struct io_plan start_ok(struct io_conn *conn, struct data *d)
 
 	memset(d->wbuf, 7, sizeof(d->wbuf));
 	ok1(io_duplex(conn, write_out, finish_ok, d));
-	return io_read(conn, d->buf, sizeof(d->buf), io_close, d);
+	return io_read(d->buf, sizeof(d->buf), io_close, d);
 }
 
 static int make_listen_fd(const char *port, struct addrinfo **info)

ccan/io/test/run-13-all-idle.c

@@ -9,7 +9,7 @@
 
 static struct io_plan start(struct io_conn *conn, void *unused)
 {
-	return io_idle(conn);
+	return io_idle();
 }
 
 int main(void)

ccan/io/test/run-15-timeout.c

@@ -35,14 +35,14 @@ static struct io_plan start_ok(struct io_conn *conn, struct data *d)
 	ok1(d->state == 0);
 	d->state++;
 	io_timeout(conn, time_from_usec(d->timeout_usec), timeout, d);
-	return io_read(conn, d->buf, sizeof(d->buf), no_timeout, d);
+	return io_read(d->buf, sizeof(d->buf), no_timeout, d);
 }
 
 static void finish_ok(struct io_conn *conn, struct data *d)
 {
 	ok1(d->state == 2);
 	d->state++;
-	io_break(conn, d, NULL, NULL);
+	io_break(d, NULL, NULL);
 }
 
 static int make_listen_fd(const char *port, struct addrinfo **info)