#ifndef CCAN_IO_BACKEND_H
#define CCAN_IO_BACKEND_H
#include <stdbool.h>
-#include <poll.h>
#include "io_plan.h"
#include <ccan/list/list.h>
struct fd {
int fd;
bool listener;
+ /* We could put these in io_plan, but they pack nicely here */
+ bool exclusive[2];
size_t backend_info;
};
enum io_plan_status {
/* As before calling next function. */
IO_UNSET,
- /* Normal. */
- IO_POLLING,
+ /* Normal, but haven't started yet. */
+ IO_POLLING_NOTSTARTED,
+ IO_POLLING_STARTED,
/* Waiting for io_wake */
IO_WAITING,
/* Always do this. */
/**
* 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);
struct io_conn {
struct fd fd;
- /* always list. */
- struct list_node always;
-
void (*finish)(struct io_conn *, void *arg);
void *finish_arg;
bool add_conn(struct io_conn *c);
bool add_duplex(struct io_conn *c);
void del_listener(struct io_listener *l);
-void backend_new_always(struct io_conn *conn);
+void cleanup_conn_without_close(struct io_conn *c);
+bool backend_new_always(struct io_plan *plan);
void backend_new_plan(struct io_conn *conn);
-void remove_from_always(struct io_conn *conn);
void backend_plan_done(struct io_conn *conn);
+bool backend_set_exclusive(struct io_plan *plan, bool exclusive);
void backend_wake(const void *wait);
-void backend_del_conn(struct io_conn *conn);
void io_ready(struct io_conn *conn, int pollflags);
-void io_do_always(struct io_conn *conn);
+void io_do_always(struct io_plan *conn);
void io_do_wakeup(struct io_conn *conn, enum io_direction dir);
void *do_io_loop(struct io_conn **ready);
#endif /* CCAN_IO_BACKEND_H */