/**
* struct io_plan - one half of I/O to do
* @status: the status of this plan.
+ * @dir: are we plan[0] or plan[1] inside io_conn?
* @io: function to call when fd becomes read/writable, returns 0 to be
* called again, 1 if it's finished, and -1 on error (fd will be closed)
* @next: the next function which is called if io returns 1.
*/
struct io_plan {
enum io_plan_status status;
+ enum io_direction dir;
int (*io)(int fd, struct io_plan_arg *arg);
if (plan == &io_conn_freed)
return false;
- /* It should have set a plan inside this conn (or duplex) */
- assert(plan == &conn->plan[IO_IN]
- || plan == &conn->plan[IO_OUT]
- || plan == &conn->plan[2]);
+ assert(plan == &conn->plan[plan->dir]);
assert(conn->plan[IO_IN].status != IO_UNSET
|| conn->plan[IO_OUT].status != IO_UNSET);
/* Keep our I/O async. */
io_fd_block(fd, false);
+ /* So we can get back from plan -> conn later */
+ conn->plan[IO_OUT].dir = IO_OUT;
+ conn->plan[IO_IN].dir = IO_IN;
+
/* We start with out doing nothing, and in doing our init. */
conn->plan[IO_OUT].status = IO_UNSET;
assert(conn == container_of(in_plan, struct io_conn, plan[IO_IN]));
/* in_plan must be conn->plan[IO_IN], out_plan must be [IO_OUT] */
assert(out_plan == in_plan + 1);
- return out_plan + 1;
+ return in_plan;
}
struct io_plan *io_halfclose(struct io_conn *conn)