114 lines
2.8 KiB
C
114 lines
2.8 KiB
C
|
|
/*
|
|
* Copyright (C) Igor Sysoev
|
|
* Copyright (C) NGINX, Inc.
|
|
*/
|
|
|
|
#ifndef _NXT_TIMER_H_INCLUDED_
|
|
#define _NXT_TIMER_H_INCLUDED_
|
|
|
|
|
|
/* Valid values are between 0ms to 255ms. */
|
|
#define NXT_TIMER_DEFAULT_BIAS 50
|
|
//#define NXT_TIMER_DEFAULT_BIAS 0
|
|
|
|
|
|
/*
|
|
* The nxt_timer_t structure can hold up to 14 bits of change index,
|
|
* but 0 reserved for NXT_TIMER_NO_CHANGE.
|
|
*/
|
|
#define NXT_TIMER_MAX_CHANGES 16383
|
|
#define NXT_TIMER_NO_CHANGE 0
|
|
|
|
|
|
typedef struct {
|
|
/* The rbtree node must be the first field. */
|
|
NXT_RBTREE_NODE (node);
|
|
|
|
uint8_t bias;
|
|
|
|
uint16_t change:14;
|
|
uint16_t enabled:1;
|
|
uint16_t queued:1;
|
|
|
|
nxt_msec_t time;
|
|
|
|
nxt_work_queue_t *work_queue;
|
|
nxt_work_handler_t handler;
|
|
|
|
nxt_task_t *task;
|
|
nxt_log_t *log;
|
|
} nxt_timer_t;
|
|
|
|
|
|
#define NXT_TIMER { NXT_RBTREE_NODE_INIT, 0, NXT_TIMER_NO_CHANGE, \
|
|
0, 0, 0, NULL, NULL, NULL, NULL }
|
|
|
|
|
|
typedef enum {
|
|
NXT_TIMER_NOPE = 0,
|
|
NXT_TIMER_ADD,
|
|
NXT_TIMER_DELETE,
|
|
} nxt_timer_operation_t;
|
|
|
|
|
|
typedef struct {
|
|
nxt_timer_operation_t change:8;
|
|
nxt_msec_t time;
|
|
nxt_timer_t *timer;
|
|
} nxt_timer_change_t;
|
|
|
|
|
|
typedef struct {
|
|
nxt_rbtree_t tree;
|
|
|
|
/* An overflown milliseconds counter. */
|
|
nxt_msec_t now;
|
|
nxt_msec_t minimum;
|
|
|
|
nxt_uint_t mchanges;
|
|
nxt_uint_t nchanges;
|
|
|
|
nxt_timer_change_t *changes;
|
|
} nxt_timers_t;
|
|
|
|
|
|
#define nxt_timer_data(obj, type, timer) \
|
|
nxt_container_of(obj, type, timer)
|
|
|
|
|
|
/*
|
|
* When timer resides in rbtree all links of its node are not NULL.
|
|
* A parent link is the nearst to other timer flags.
|
|
*/
|
|
|
|
#define nxt_timer_is_in_tree(timer) \
|
|
((timer)->node.parent != NULL)
|
|
|
|
#define nxt_timer_in_tree_set(timer)
|
|
/* Noop, because rbtree insertion sets a node's parent link. */
|
|
|
|
#define nxt_timer_in_tree_clear(timer) \
|
|
(timer)->node.parent = NULL
|
|
|
|
|
|
nxt_int_t nxt_timers_init(nxt_timers_t *timers, nxt_uint_t mchanges);
|
|
nxt_msec_t nxt_timer_find(nxt_event_engine_t *engine);
|
|
void nxt_timer_expire(nxt_event_engine_t *engine, nxt_msec_t now);
|
|
|
|
NXT_EXPORT void nxt_timer_add(nxt_event_engine_t *engine, nxt_timer_t *timer,
|
|
nxt_msec_t timeout);
|
|
NXT_EXPORT nxt_bool_t nxt_timer_delete(nxt_event_engine_t *engine,
|
|
nxt_timer_t *timer);
|
|
|
|
nxt_inline void
|
|
nxt_timer_disable(nxt_event_engine_t *engine, nxt_timer_t *timer)
|
|
{
|
|
nxt_debug(timer->task, "timer disable: %M", timer->time);
|
|
|
|
timer->enabled = 0;
|
|
}
|
|
|
|
|
|
#endif /* _NXT_TIMER_H_INCLUDED_ */
|