-/* Licensed under BSD-MIT - see LICENSE file for details */
+/* Licensed under LGPLv2.1+ - see LICENSE file for details */
#ifndef CCAN_IO_BACKEND_H
#define CCAN_IO_BACKEND_H
#include <stdbool.h>
+#include <ccan/timer/timer.h>
struct fd {
int fd;
bool listener;
size_t backend_info;
-
- struct io_op *(*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;
+
+ /* 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;
};
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. */
};
-static inline enum io_state from_ioop(struct io_op *op)
+static inline enum io_state from_ioplan(struct io_plan *op)
{
return (enum io_state)(long)op;
}
size_t *lenp;
};
+struct io_timeout {
+ struct timer timer;
+ struct io_conn *conn;
+
+ struct io_plan *(*next)(struct io_conn *, void *arg);
+ void *next_arg;
+};
+
/* One connection per client. */
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;
+
+ int pollflag; /* 0, POLLIN or POLLOUT */
enum io_state state;
union {
struct io_state_read read;
} u;
};
+static inline bool timeout_active(const struct io_conn *conn)
+{
+ return conn->timeout && conn->timeout->conn;
+}
+
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);
+void backend_set_state(struct io_conn *conn, struct io_plan *op);
+void backend_add_timeout(struct io_conn *conn, struct timespec ts);
+void backend_del_timeout(struct io_conn *conn);
-struct io_op *do_writeable(struct io_conn *conn);
-struct io_op *do_readable(struct io_conn *conn);
+struct io_plan *do_ready(struct io_conn *conn);
#endif /* CCAN_IO_BACKEND_H */