Mercurial > hg > nginx

annotate src/event/ngx_event_busy_lock.c @ 277:e91499541410

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
nginx-0.0.2-2004-03-03-19:14:15 import
author Igor Sysoev <igor@sysoev.ru>
date Wed, 03 Mar 2004 16:14:15 +0000
parents a2d1ccc96111
children ee394e997c77
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
276
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
1
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
2 #include <ngx_config.h>
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
3 #include <ngx_core.h>
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
4 #include <ngx_event.h>
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
5
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
6
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
7 static int ngx_event_busy_lock_look_cachable(ngx_event_busy_lock_t *bl,
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
8 ngx_event_busy_lock_ctx_t *ctx);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
9 static void ngx_event_busy_lock_handler(ngx_event_t *ev);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
10 static void ngx_event_busy_lock_posted_handler(ngx_event_t *ev);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
11
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
12
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
13 /*
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
14 * NGX_OK: the busy lock is held
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
15 * NGX_BUSY: there are many the busy locks or many the waiting locks
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
16 * NGX_AGAIN: the all busy locks are held but we will wait the specified time
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
17 * NGX_ERROR: there was error while the mutex locking
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
18 */
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
19
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
20 ngx_int_t ngx_event_busy_lock(ngx_event_busy_lock_t *bl,
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
21 ngx_event_busy_lock_ctx_t *ctx)
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
22 {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
23 ngx_int_t rc;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
24
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
25 if (ngx_mutex_lock(bl->mutex) == NGX_ERROR) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
26 return NGX_ERROR;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
27 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
28
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
29 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ctx->event->log, 0,
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
30 "event busy lock: b:%d mb:%d",
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
31 bl->busy, bl->max_busy);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
32
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
33 if (bl->busy < bl->max_busy) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
34 bl->busy++;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
35 rc = NGX_OK;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
36
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
37 } else if (ctx->timer && bl->waiting < bl->max_waiting) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
38 bl->waiting++;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
39 ngx_add_timer(ctx->event, ctx->timer);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
40 ctx->event->event_handler = ngx_event_busy_lock_handler;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
41
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
42 if (bl->events == NULL) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
43 bl->events = ctx;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
44 } else {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
45 bl->last->next = ctx;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
46 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
47 bl->last = ctx;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
48
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
49 rc = NGX_AGAIN;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
50
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
51 } else {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
52 rc = NGX_BUSY;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
53 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
54
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
55 ngx_mutex_unlock(bl->mutex);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
56
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
57 return rc;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
58 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
59
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
60
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
61 ngx_int_t ngx_event_busy_lock_cachable(ngx_event_busy_lock_t *bl,
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
62 ngx_event_busy_lock_ctx_t *ctx)
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
63 {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
64 ngx_int_t rc;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
65
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
66 if (ngx_mutex_lock(bl->mutex) == NGX_ERROR) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
67 return NGX_ERROR;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
68 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
69
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
70 rc = ngx_event_busy_lock_look_cachable(bl, ctx);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
71
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
72 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ctx->event->log, 0,
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
73 "event busy lock: %d w:%d mw:%d",
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
74 rc, bl->waiting, bl->max_waiting);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
75
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
76 /*
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
77 * NGX_OK: no the same request, there is free slot and we locked it
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
78 * NGX_BUSY: no the same request and there is no free slot
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
79 * NGX_AGAIN: the same request is processing
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
80 */
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
81
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
82 if (rc == NGX_AGAIN) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
83
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
84 if (ctx->timer && bl->waiting < bl->max_waiting) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
85 bl->waiting++;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
86 ngx_add_timer(ctx->event, ctx->timer);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
87 ctx->event->event_handler = ngx_event_busy_lock_handler;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
88
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
89 if (bl->events == NULL) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
90 bl->events = ctx;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
91 } else {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
92 bl->last->next = ctx;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
93 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
94 bl->last = ctx;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
95
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
96 } else {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
97 rc = NGX_BUSY;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
98 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
99 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
100
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
101 ngx_mutex_unlock(bl->mutex);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
102
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
103 return rc;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
104 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
105
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
106
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
107 ngx_int_t ngx_event_busy_unlock(ngx_event_busy_lock_t *bl,
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
108 ngx_event_busy_lock_ctx_t *ctx)
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
109 {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
110 ngx_event_t *ev;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
111 ngx_event_busy_lock_ctx_t *wakeup;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
112
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
113 if (ngx_mutex_lock(bl->mutex) == NGX_ERROR) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
114 return NGX_ERROR;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
115 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
116
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
117 if (bl->events) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
118 wakeup = bl->events;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
119 bl->events = bl->events->next;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
120
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
121 } else {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
122 wakeup = NULL;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
123 bl->busy--;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
124 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
125
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
126 /*
277
e91499541410 nginx-0.0.2-2004-03-03-19:14:15 import
Igor Sysoev <igor@sysoev.ru>
parents: 276
diff changeset
127 * MP: all ctx's and their queue must be in shared memory,
e91499541410 nginx-0.0.2-2004-03-03-19:14:15 import
Igor Sysoev <igor@sysoev.ru>
parents: 276
diff changeset
128 * each ctx has pid to wake up
276
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
129 */
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
130
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
131 if (wakeup == NULL) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
132 ngx_mutex_unlock(bl->mutex);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
133 return NGX_OK;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
134 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
135
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
136 if (ctx->md5) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
137 for (wakeup = bl->events; wakeup; wakeup = wakeup->next) {
277
e91499541410 nginx-0.0.2-2004-03-03-19:14:15 import
Igor Sysoev <igor@sysoev.ru>
parents: 276
diff changeset
138 if (wakeup->md5 == NULL || wakeup->slot != ctx->slot) {
276
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
139 continue;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
140 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
141
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
142 wakeup->handler = ngx_event_busy_lock_posted_handler;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
143 wakeup->cache_updated = 1;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
144
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
145 ev = wakeup->event;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
146
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
147 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
148 return NGX_ERROR;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
149 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
150
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
151 ev->next = (ngx_event_t *) ngx_posted_events;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
152 ngx_posted_events = ev;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
153
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
154 ngx_mutex_unlock(ngx_posted_events_mutex);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
155 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
156
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
157 ngx_mutex_unlock(bl->mutex);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
158
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
159 } else {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
160 bl->waiting--;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
161
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
162 ngx_mutex_unlock(bl->mutex);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
163
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
164 wakeup->handler = ngx_event_busy_lock_posted_handler;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
165 wakeup->locked = 1;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
166
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
167 ev = wakeup->event;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
168
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
169 if (ev->timer_set) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
170 ngx_del_timer(ev);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
171 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
172
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
173 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
174 return NGX_ERROR;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
175 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
176
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
177 ev->next = (ngx_event_t *) ngx_posted_events;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
178 ngx_posted_events = ev;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
179
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
180 ngx_mutex_unlock(ngx_posted_events_mutex);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
181 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
182
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
183 return NGX_OK;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
184 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
185
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
186
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
187 ngx_int_t ngx_event_busy_lock_cancel(ngx_event_busy_lock_t *bl,
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
188 ngx_event_busy_lock_ctx_t *ctx)
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
189 {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
190 ngx_event_busy_lock_ctx_t *c, *p;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
191
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
192 if (ngx_mutex_lock(bl->mutex) == NGX_ERROR) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
193 return NGX_ERROR;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
194 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
195
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
196 bl->waiting--;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
197
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
198 if (ctx == bl->events) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
199 bl->events = ctx->next;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
200
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
201 } else {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
202 p = bl->events;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
203 for (c = bl->events->next; c; c = c->next) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
204 if (c == ctx) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
205 p->next = ctx->next;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
206 break;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
207 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
208 p = c;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
209 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
210 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
211
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
212 ngx_mutex_unlock(bl->mutex);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
213
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
214 return NGX_OK;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
215 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
216
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
217
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
218 static int ngx_event_busy_lock_look_cachable(ngx_event_busy_lock_t *bl,
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
219 ngx_event_busy_lock_ctx_t *ctx)
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
220 {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
221 ngx_int_t free;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
222 ngx_uint_t i, bit, cachable, mask;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
223
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
224 bit = 0;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
225 cachable = 0;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
226 free = -1;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
227
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
228 #if (NGX_SUPPRESS_WARN)
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
229 mask = 0;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
230 #endif
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
231
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
232 for (i = 0; i < bl->max_busy; i++) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
233
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
234 if ((bit & 7) == 0) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
235 mask = bl->md5_mask[i / 8];
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
236 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
237
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
238 if (mask & 1) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
239 if (ngx_memcmp(&bl->md5[i * 16], ctx->md5, 16) == 0) {
277
e91499541410 nginx-0.0.2-2004-03-03-19:14:15 import
Igor Sysoev <igor@sysoev.ru>
parents: 276
diff changeset
240 ctx->waiting = 1;
e91499541410 nginx-0.0.2-2004-03-03-19:14:15 import
Igor Sysoev <igor@sysoev.ru>
parents: 276
diff changeset
241 ctx->slot = i;
276
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
242 return NGX_AGAIN;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
243 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
244 cachable++;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
245
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
246 } else if (free == -1) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
247 free = i;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
248 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
249
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
250 if (cachable == bl->cachable) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
251 if (free == -1 && cachable < bl->max_busy) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
252 free = i + 1;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
253 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
254
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
255 break;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
256 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
257
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
258 mask >>= 1;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
259 bit++;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
260 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
261
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
262 if (free == -1) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
263 return NGX_BUSY;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
264 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
265
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
266 #if 0
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
267 if (bl->busy == bl->max_busy) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
268 return NGX_BUSY;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
269 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
270 #endif
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
271
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
272 ngx_memcpy(&bl->md5[free * 16], ctx->md5, 16);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
273 bl->md5_mask[free / 8] |= 1 << (free & 7);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
274 ctx->slot = free;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
275
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
276 bl->cachable++;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
277 bl->busy++;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
278
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
279 return NGX_OK;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
280 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
281
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
282
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
283 static void ngx_event_busy_lock_handler(ngx_event_t *ev)
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
284 {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
285 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
286 return;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
287 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
288
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
289 ev->next = (ngx_event_t *) ngx_posted_events;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
290 ngx_posted_events = ev;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
291
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
292 ngx_mutex_unlock(ngx_posted_events_mutex);
277
e91499541410 nginx-0.0.2-2004-03-03-19:14:15 import
Igor Sysoev <igor@sysoev.ru>
parents: 276
diff changeset
293
e91499541410 nginx-0.0.2-2004-03-03-19:14:15 import
Igor Sysoev <igor@sysoev.ru>
parents: 276
diff changeset
294 ev->event_handler = ngx_event_busy_lock_posted_handler;
276
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
295 }
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
296
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
297
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
298 static void ngx_event_busy_lock_posted_handler(ngx_event_t *ev)
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
299 {
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
300 ngx_event_busy_lock_ctx_t *ctx;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
301
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
302 ctx = ev->data;
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
303 ctx->handler(ev);
a2d1ccc96111 nginx-0.0.2-2004-03-03-00:14:37 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
304 }