147 lines
3.7 KiB
C
147 lines
3.7 KiB
C
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/*
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* Copyright (C) Igor Sysoev
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* Copyright (C) NGINX, Inc.
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*/
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#ifndef _NXT_EVENT_TIMER_H_INCLUDED_
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#define _NXT_EVENT_TIMER_H_INCLUDED_
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/* Valid values are between 1ms to 255ms. */
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#define NXT_EVENT_TIMER_DEFAULT_PRECISION 100
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//#define NXT_EVENT_TIMER_DEFAULT_PRECISION 1
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#if (NXT_DEBUG)
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#define NXT_EVENT_TIMER { NXT_RBTREE_NODE_INIT, 0, 0, 0, \
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NULL, NULL, NULL, -1 }
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#else
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#define NXT_EVENT_TIMER { NXT_RBTREE_NODE_INIT, 0, 0, 0, \
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NULL, NULL, NULL }
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#endif
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typedef struct {
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/* The rbtree node must be the first field. */
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NXT_RBTREE_NODE (node);
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uint8_t state;
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uint8_t precision;
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nxt_msec_t time;
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nxt_work_queue_t *work_queue;
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nxt_work_handler_t handler;
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nxt_log_t *log;
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#if (NXT_DEBUG)
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int32_t ident;
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#endif
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} nxt_event_timer_t;
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typedef struct {
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nxt_msec_t time;
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nxt_event_timer_t *event;
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} nxt_event_timer_change_t;
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typedef struct {
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nxt_rbtree_t tree;
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/* An overflown milliseconds counter. */
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nxt_msec_t now;
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nxt_uint_t mchanges;
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nxt_uint_t nchanges;
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nxt_event_timer_change_t *changes;
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} nxt_event_timers_t;
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#define \
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nxt_event_timer_data(ev, type, timer) \
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nxt_container_of(ev, type, timer)
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/*
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* When timer resides in rbtree all links of its node are not NULL.
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* A parent link is the nearst to other timer flags.
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*/
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#define \
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nxt_event_timer_is_in_tree(ev) \
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((ev)->node.parent != NULL)
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#define \
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nxt_event_timer_in_tree_set(ev)
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/* Noop, because rbtree insertion sets a node's parent link. */
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#define \
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nxt_event_timer_in_tree_clear(ev) \
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(ev)->node.parent = NULL
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#define NXT_EVENT_TIMER_DISABLED 0
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#define NXT_EVENT_TIMER_BLOCKED 1
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#define NXT_EVENT_TIMER_ACTIVE 2
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#if (NXT_DEBUG)
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#define \
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nxt_event_timer_ident(ev, val) \
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(ev)->ident = (val)
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#else
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#define \
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nxt_event_timer_ident(ev, val)
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#endif
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nxt_inline nxt_event_timer_t *
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nxt_event_timer_create(int32_t ident)
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{
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nxt_event_timer_t *ev;
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ev = nxt_zalloc(sizeof(nxt_event_timer_t));
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if (ev == NULL) {
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return NULL;
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}
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ev->precision = NXT_EVENT_TIMER_DEFAULT_PRECISION;
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#if (NXT_DEBUG)
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ev->ident = ident;
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#endif
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return ev;
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}
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nxt_int_t nxt_event_timers_init(nxt_event_timers_t *timers,
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nxt_uint_t mchanges);
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NXT_EXPORT void nxt_event_timer_add(nxt_event_engine_t *engine,
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nxt_event_timer_t *ev, nxt_msec_t timer);
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NXT_EXPORT void nxt_event_timer_delete(nxt_event_engine_t *engine,
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nxt_event_timer_t *ev);
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nxt_msec_t nxt_event_timer_find(nxt_event_engine_t *engine);
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void nxt_event_timer_expire(nxt_thread_t *thr, nxt_msec_t now);
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#if (NXT_DEBUG)
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NXT_EXPORT void nxt_event_timer_disable(nxt_event_timer_t *ev);
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#else
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#define \
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nxt_event_timer_disable(ev) \
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(ev)->state = NXT_EVENT_TIMER_DISABLED
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#endif
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#endif /* _NXT_EVENT_TIMER_H_INCLUDED_ */
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