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bird/sysdep/unix/io-loop.h
Maria Matejka 94eb0858c2 Converting the former BFD loop to a universal IO loop and protocol loop.
There is a simple universal IO loop, taking care of events, timers and
sockets. Primarily, one instance of a protocol should use exactly one IO
loop to do all its work, as is now done in BFD.

Contrary to previous versions, the loop is now launched and cleaned by
the nest/proto.c code, allowing for a protocol to just request its own
loop by setting the loop's lock order in config higher than the_bird.

It is not supported nor checked if any protocol changed the requested
lock order in reconfigure. No protocol should do it at all.
2021-11-22 19:05:43 +01:00

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C

/*
* BIRD -- I/O and event loop
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#ifndef _BIRD_SYSDEP_UNIX_IO_LOOP_H_
#define _BIRD_SYSDEP_UNIX_IO_LOOP_H_
struct birdloop
{
pool *pool;
struct timeloop time;
event_list event_list;
list sock_list;
uint sock_num;
BUFFER(sock *) poll_sk;
BUFFER(struct pollfd) poll_fd;
u8 poll_changed;
u8 close_scheduled;
_Atomic u32 ping_sent;
int wakeup_fds[2];
uint links;
void (*stopped)(void *data);
void *stop_data;
struct birdloop *prev_loop;
};
#endif