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https://gitlab.nic.cz/labs/bird.git
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571c4f69bf
If there are lots of loops in a single thread and only some of the loops are actually active, the other loops are now kept aside and not checked until they actually get some timers, events or active sockets. This should help with extreme loads like 100k tables and protocols. Also ping and loop pickup mechanism was allowing subtle race conditions. Now properly handling collisions between loop ping and pickup.
89 lines
1.3 KiB
C
89 lines
1.3 KiB
C
/*
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* BIRD -- I/O and event loop
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#ifndef _BIRD_SYSDEP_UNIX_IO_LOOP_H_
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#define _BIRD_SYSDEP_UNIX_IO_LOOP_H_
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#include "lib/rcu.h"
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#include <pthread.h>
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struct pipe
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{
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int fd[2];
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};
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struct pfd {
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BUFFER(struct pollfd) pfd;
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BUFFER(struct birdloop *) loop;
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};
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void sockets_prepare(struct birdloop *, struct pfd *);
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void pipe_new(struct pipe *);
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void pipe_pollin(struct pipe *, struct pfd *);
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void pipe_drain(struct pipe *);
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void pipe_kick(struct pipe *);
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struct birdloop
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{
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node n;
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event event;
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timer timer;
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pool *pool;
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struct timeloop time;
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event_list event_list;
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list sock_list;
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int sock_num;
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uint ping_pending;
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uint links;
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_Atomic u32 thread_transition;
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#define LTT_PING 1
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#define LTT_MOVE 2
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_Atomic u32 flags;
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struct birdloop_flag_handler *flag_handler;
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void (*stopped)(void *data);
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void *stop_data;
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struct birdloop *prev_loop;
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struct bird_thread *thread;
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u64 total_time_spent_ns;
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};
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struct bird_thread
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{
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node n;
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_Atomic u32 poll_changed;
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struct pipe wakeup;
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event_list priority_events;
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struct birdloop *meta;
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pthread_t thread_id;
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pthread_attr_t thread_attr;
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struct rcu_thread rcu;
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list loops;
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pool *pool;
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struct pfd *pfd;
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event cleanup_event;
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};
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#endif
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