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comparison src/event/ngx_event.h @ 0:4eff17414a43

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nginx-0.0.1-2002-08-06-20:39:45 import The first code that uses "ngx_" prefix, the previous one used "gx_" prefix. At that point the code is not yet usable. The first draft ideas are dated back to 23.10.2001.
author Igor Sysoev <igor@sysoev.ru>
date Tue, 06 Aug 2002 16:39:45 +0000
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children d220029ac7f3
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-1:000000000000 0:4eff17414a43
1 #ifndef _NGX_EVENT_H_INCLUDED_
2 #define _NGX_EVENT_H_INCLUDED_
3
4
5 #include <ngx_config.h>
6 #include <ngx_types.h>
7 #include <ngx_log.h>
8
9 typedef struct ngx_event_s ngx_event_t;
10
11 struct ngx_event_s {
12 void *data;
13
14 int (*event_handler)(ngx_event_t *ev);
15 int (*close_handler)(ngx_event_t *ev);
16 void *context;
17 char *action;
18
19 ngx_event_t *prev; /* queue in select(), poll() */
20 ngx_event_t *next;
21
22 int (*timer_handler)(ngx_event_t *ev);
23 ngx_event_t *timer_prev;
24 ngx_event_t *timer_next;
25
26 u_int timer_delta;
27 u_int timer;
28
29 ngx_log_t *log;
30
31 int available; /* kqueue only: */
32 /* accept: number of sockets that wait */
33 /* to be accepted */
34 /* read: bytes to read */
35 /* write: available space in buffer */
36 /* otherwise: */
37 /* accept: 1 if accept many, 0 otherwise */
38
39 /* flags - int are probably faster on write then bits ??? */
40 unsigned listening:1;
41 unsigned write:1;
42
43 unsigned ready:1;
44 unsigned timedout:1;
45 unsigned process:1;
46 unsigned read_discarded:1;
47
48 unsigned unexpected_eof:1;
49
50 #if (HAVE_DEFERRED_ACCEPT)
51 unsigned accept_filter:1;
52 #endif
53 #if (HAVE_KQUEUE)
54 unsigned eof:1;
55 int errno;
56 #endif
57 };
58
59 typedef enum {
60 NGX_SELECT_EVENT = 0,
61 #if (HAVE_POLL)
62 NGX_POLL_EVENT,
63 #endif
64 #if (HAVE_KQUEUE)
65 NGX_KQUEUE_EVENT,
66 #endif
67 } ngx_event_type_e ;
68
69 typedef struct {
70 int (*add)(ngx_event_t *ev, int event, u_int flags);
71 int (*del)(ngx_event_t *ev, int event);
72 int (*process)(ngx_log_t *log);
73 /*
74 int (*read)(ngx_event_t *ev, char *buf, size_t size);
75 int (*write)(ngx_event_t *ev, char *buf, size_t size);
76 */
77 } ngx_event_actions_t;
78
79
80 #if (HAVE_KQUEUE)
81
82 #define NGX_READ_EVENT EVFILT_READ
83 #define NGX_WRITE_EVENT EVFILT_WRITE
84 #define NGX_TIMER_EVENT (-EVFILT_SYSCOUNT - 1)
85
86 #define NGX_ONESHOT_EVENT EV_ONESHOT
87 #define NGX_CLEAR_EVENT EV_CLEAR
88
89 #else
90
91 #define NGX_READ_EVENT 0
92 #define NGX_WRITE_EVENT 1
93 #define NGX_TIMER_EVENT 2
94
95 #define NGX_ONESHOT_EVENT 1
96 #define NGX_CLEAR_EVENT 2
97
98 #endif
99
100
101 #if (USE_KQUEUE)
102 #define ngx_init_events ngx_kqueue_init
103 #define ngx_process_events ngx_kqueue_process_events
104 #define ngx_add_event ngx_kqueue_add_event
105 #define ngx_del_event ngx_kqueue_del_event
106 #else
107 #define ngx_init_events (ngx_event_init[ngx_event_type])
108 #define ngx_process_events ngx_event_actions.process
109 #define ngx_add_event ngx_event_actions.add
110 #define ngx_del_event ngx_event_actions.del
111 #endif
112
113
114 extern ngx_event_t *ngx_read_events;
115 extern ngx_event_t *ngx_write_events;
116 extern ngx_connection_t *ngx_connections;
117
118 #if !(USE_KQUEUE)
119 extern ngx_event_actions_t ngx_event_actions;
120 extern ngx_event_type_e ngx_event_type;
121 #endif
122
123
124 void ngx_worker(ngx_listen_t *sock, int n, ngx_pool_t *pool, ngx_log_t *log);
125
126
127 #endif /* _NGX_EVENT_H_INCLUDED_ */