1999-02-11 22:18:36 +00:00
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/*
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* BIRD Library -- Event Processing
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*
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* (c) 1999 Martin Mares <mj@ucw.cz>
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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_EVENT_H_
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#define _BIRD_EVENT_H_
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#include "lib/resource.h"
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2021-06-19 18:50:18 +00:00
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#include "lib/locking.h"
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2022-09-12 09:09:43 +00:00
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#include "lib/rcu.h"
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2021-06-19 18:50:18 +00:00
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#include <stdatomic.h>
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2022-06-24 17:53:34 +00:00
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struct birdloop;
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1999-02-11 22:18:36 +00:00
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typedef struct event {
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resource r;
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2000-04-27 22:28:49 +00:00
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void (*hook)(void *);
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1999-02-11 22:18:36 +00:00
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void *data;
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2022-06-24 17:53:34 +00:00
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struct event * _Atomic next;
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2022-09-12 09:09:43 +00:00
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struct event_list * _Atomic list;
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1999-02-11 22:18:36 +00:00
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} event;
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2022-09-12 09:09:43 +00:00
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typedef struct event_list {
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event * _Atomic receiver; /* Event receive list */
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event * _Atomic _executor; /* Event execute list */
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const char *name;
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struct birdloop *loop; /* The executor loop */
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2021-06-19 18:50:18 +00:00
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} event_list;
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1999-02-11 22:18:36 +00:00
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extern event_list global_event_list;
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2021-03-12 14:35:56 +00:00
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extern event_list global_work_list;
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1999-02-11 22:18:36 +00:00
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event *ev_new(pool *);
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2000-04-27 22:28:49 +00:00
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void ev_run(event *);
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2022-06-24 17:53:34 +00:00
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void ev_init_list(event_list *, struct birdloop *loop, const char *name);
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void ev_enqueue(event_list *, event *);
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#define ev_send ev_enqueue
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2021-06-19 18:50:18 +00:00
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#define ev_send_loop(l, e) ev_send(birdloop_event_list((l)), (e))
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#define ev_schedule(e) ({ ASSERT_THE_BIRD_LOCKED; if (!ev_active((e))) ev_send(&global_event_list, (e)); })
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#define ev_schedule_work(e) ({ ASSERT_THE_BIRD_LOCKED; if (!ev_active((e))) ev_send(&global_work_list, (e)); })
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1999-02-11 22:18:36 +00:00
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void ev_postpone(event *);
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2021-03-12 14:35:56 +00:00
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int ev_run_list_limited(event_list *, uint);
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2022-06-24 17:53:34 +00:00
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#define ev_run_list(l) ev_run_list_limited((l), ~0)
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1999-02-11 22:18:36 +00:00
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2021-06-19 18:50:18 +00:00
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#define LEGACY_EVENT_LIST(l) (((l) == &global_event_list) || ((l) == &global_work_list))
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2014-11-03 09:42:55 +00:00
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static inline int
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ev_active(event *e)
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{
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2022-09-12 09:09:43 +00:00
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return atomic_load_explicit(&e->list, memory_order_acquire) != NULL;
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2022-06-24 17:53:34 +00:00
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}
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2021-06-19 18:50:18 +00:00
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2022-06-24 17:53:34 +00:00
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static inline event_list *
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ev_get_list(event *e)
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{
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2022-09-12 09:09:43 +00:00
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return atomic_load_explicit(&e->list, memory_order_acquire);
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2014-11-03 09:42:55 +00:00
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}
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2018-10-01 13:55:23 +00:00
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static inline event*
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ev_new_init(pool *p, void (*hook)(void *), void *data)
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{
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event *e = ev_new(p);
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e->hook = hook;
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e->data = data;
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return e;
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}
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2014-11-03 09:42:55 +00:00
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1999-02-11 22:18:36 +00:00
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#endif
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