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86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
#ifndef LIGHTNING_COMMON_DAEMON_CONN_H
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#define LIGHTNING_COMMON_DAEMON_CONN_H
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#include "config.h"
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#include <common/msg_queue.h>
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/**
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* daemon_conn_new - Allocate a new daemon connection
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*
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* @ctx: context to allocate the daemon_conn's conn from
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* @fd: socket file descriptor to wrap
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* @recv: callback function to be called upon receiving a message
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* @outq_empty: callback function to be called when queue is empty: returns
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* true if it added something to the queue. Can be NULL.
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*/
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#define daemon_conn_new(ctx, fd, recv, outq_empty, arg) \
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daemon_conn_new_((ctx), (fd), \
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typesafe_cb_preargs(struct io_plan *, void *, \
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(recv), (arg), \
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struct io_conn *, \
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const u8 *), \
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typesafe_cb(void, void *, (outq_empty), (arg)), \
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arg)
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struct daemon_conn *daemon_conn_new_(const tal_t *ctx, int fd,
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struct io_plan *(*recv)(struct io_conn *,
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const u8 *,
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void *),
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void (*outq_empty)(void *),
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void *arg);
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/**
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* daemon_conn_send - Enqueue an outgoing message to be sent
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*/
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void daemon_conn_send(struct daemon_conn *dc, const u8 *msg);
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/**
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* daemon_conn_wake - Wake queue (fires msg_queue_cleared_cb if queue empty)
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*/
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void daemon_conn_wake(struct daemon_conn *dc);
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/**
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* daemon_conn_send_fd - Enqueue a file descriptor to be sent (closed after)
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*/
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void daemon_conn_send_fd(struct daemon_conn *dc, int fd);
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/**
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* daemon_conn_read_next - Read the next message
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*/
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struct io_plan *daemon_conn_read_next(struct io_conn *conn,
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struct daemon_conn *dc);
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/**
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* daemon_conn_read_with_fd - Read a file descriptor, call again.
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* (arg must be same as daemon_conn_new!)
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* When recv() wants an fd with this message.
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*/
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#define daemon_conn_read_with_fd(conn, dc, recv_fd, arg) \
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daemon_conn_read_with_fd_((conn), (dc), \
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typesafe_cb_preargs(struct io_plan *, void *, \
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(recv_fd), (arg), \
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struct io_conn *, \
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const u8 *, \
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int), \
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(arg))
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struct io_plan *daemon_conn_read_with_fd_(struct io_conn *conn,
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struct daemon_conn *dc,
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struct io_plan *(*recv_fd)(struct io_conn *,
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const u8 *,
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int fd,
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void *),
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void *arg);
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/**
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* daemon_conn_sync_flush - Flush connection by sending all messages now..
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*/
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bool daemon_conn_sync_flush(struct daemon_conn *dc);
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/**
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* daemon_conn_queue_length - Get number of message in outgoing queue.
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*/
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size_t daemon_conn_queue_length(const struct daemon_conn *dc);
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#endif /* LIGHTNING_COMMON_DAEMON_CONN_H */
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