Mercurial > hg > nginx-quic
annotate src/stream/ngx_stream_upstream_zone_module.c @ 6148:bf8b6534db3a
Upstream hash: consistency across little/big endianness.
author | Sergey Kandaurov <pluknet@nginx.com> |
---|---|
date | Mon, 18 May 2015 16:05:44 +0300 |
parents | caa103acf180 |
children | 68c106e6fa0a |
rev | line source |
---|---|
6115 | 1 |
2 /* | |
3 * Copyright (C) Ruslan Ermilov | |
4 * Copyright (C) Nginx, Inc. | |
5 */ | |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 #include <ngx_stream.h> | |
11 | |
12 | |
13 static char *ngx_stream_upstream_zone(ngx_conf_t *cf, ngx_command_t *cmd, | |
14 void *conf); | |
15 static ngx_int_t ngx_stream_upstream_init_zone(ngx_shm_zone_t *shm_zone, | |
16 void *data); | |
6123
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
17 static ngx_int_t ngx_stream_upstream_zone_copy_peers(ngx_slab_pool_t *shpool, |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
18 ngx_stream_upstream_srv_conf_t *uscf); |
6115 | 19 |
20 | |
21 static ngx_command_t ngx_stream_upstream_zone_commands[] = { | |
22 | |
23 { ngx_string("zone"), | |
6123
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
24 NGX_STREAM_UPS_CONF|NGX_CONF_TAKE12, |
6115 | 25 ngx_stream_upstream_zone, |
26 0, | |
27 0, | |
28 NULL }, | |
29 | |
30 ngx_null_command | |
31 }; | |
32 | |
33 | |
34 static ngx_stream_module_t ngx_stream_upstream_zone_module_ctx = { | |
35 NULL, /* create main configuration */ | |
36 NULL, /* init main configuration */ | |
37 | |
38 NULL, /* create server configuration */ | |
39 NULL, /* merge server configuration */ | |
40 }; | |
41 | |
42 | |
43 ngx_module_t ngx_stream_upstream_zone_module = { | |
44 NGX_MODULE_V1, | |
45 &ngx_stream_upstream_zone_module_ctx, /* module context */ | |
46 ngx_stream_upstream_zone_commands, /* module directives */ | |
47 NGX_STREAM_MODULE, /* module type */ | |
48 NULL, /* init master */ | |
49 NULL, /* init module */ | |
50 NULL, /* init process */ | |
51 NULL, /* init thread */ | |
52 NULL, /* exit thread */ | |
53 NULL, /* exit process */ | |
54 NULL, /* exit master */ | |
55 NGX_MODULE_V1_PADDING | |
56 }; | |
57 | |
58 | |
59 static char * | |
60 ngx_stream_upstream_zone(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
61 { | |
6123
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
62 ssize_t size; |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
63 ngx_str_t *value; |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
64 ngx_stream_upstream_srv_conf_t *uscf; |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
65 ngx_stream_upstream_main_conf_t *umcf; |
6115 | 66 |
67 uscf = ngx_stream_conf_get_module_srv_conf(cf, ngx_stream_upstream_module); | |
6123
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
68 umcf = ngx_stream_conf_get_module_main_conf(cf, ngx_stream_upstream_module); |
6115 | 69 |
70 value = cf->args->elts; | |
71 | |
72 if (!value[1].len) { | |
73 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
74 "invalid zone name \"%V\"", &value[1]); | |
75 return NGX_CONF_ERROR; | |
76 } | |
77 | |
6123
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
78 if (cf->args->nelts == 3) { |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
79 size = ngx_parse_size(&value[2]); |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
80 |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
81 if (size == NGX_ERROR) { |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
82 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
83 "invalid zone size \"%V\"", &value[2]); |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
84 return NGX_CONF_ERROR; |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
85 } |
6115 | 86 |
6123
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
87 if (size < (ssize_t) (8 * ngx_pagesize)) { |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
88 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
89 "zone \"%V\" is too small", &value[1]); |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
90 return NGX_CONF_ERROR; |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
91 } |
6115 | 92 |
6123
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
93 } else { |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
94 size = 0; |
6115 | 95 } |
96 | |
97 uscf->shm_zone = ngx_shared_memory_add(cf, &value[1], size, | |
98 &ngx_stream_upstream_module); | |
99 if (uscf->shm_zone == NULL) { | |
100 return NGX_CONF_ERROR; | |
101 } | |
102 | |
103 uscf->shm_zone->init = ngx_stream_upstream_init_zone; | |
6123
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
104 uscf->shm_zone->data = umcf; |
6115 | 105 |
106 uscf->shm_zone->noreuse = 1; | |
107 | |
108 return NGX_CONF_OK; | |
109 } | |
110 | |
111 | |
112 static ngx_int_t | |
113 ngx_stream_upstream_init_zone(ngx_shm_zone_t *shm_zone, void *data) | |
114 { | |
115 size_t len; | |
6123
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
116 ngx_uint_t i; |
6115 | 117 ngx_slab_pool_t *shpool; |
6123
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
118 ngx_stream_upstream_srv_conf_t *uscf, **uscfp; |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
119 ngx_stream_upstream_main_conf_t *umcf; |
6115 | 120 |
121 shpool = (ngx_slab_pool_t *) shm_zone->shm.addr; | |
122 | |
123 if (shm_zone->shm.exists) { | |
124 return NGX_ERROR; | |
125 } | |
126 | |
127 len = sizeof(" in upstream zone \"\"") + shm_zone->shm.name.len; | |
128 | |
129 shpool->log_ctx = ngx_slab_alloc(shpool, len); | |
130 if (shpool->log_ctx == NULL) { | |
131 return NGX_ERROR; | |
132 } | |
133 | |
134 ngx_sprintf(shpool->log_ctx, " in upstream zone \"%V\"%Z", | |
135 &shm_zone->shm.name); | |
136 | |
6123
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
137 |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
138 /* copy peers to shared memory */ |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
139 |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
140 umcf = shm_zone->data; |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
141 uscfp = umcf->upstreams.elts; |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
142 |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
143 for (i = 0; i < umcf->upstreams.nelts; i++) { |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
144 uscf = uscfp[i]; |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
145 |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
146 if (uscf->shm_zone != shm_zone) { |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
147 continue; |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
148 } |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
149 |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
150 if (ngx_stream_upstream_zone_copy_peers(shpool, uscf) != NGX_OK) { |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
151 return NGX_ERROR; |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
152 } |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
153 } |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
154 |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
155 return NGX_OK; |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
156 } |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
157 |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
158 |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
159 static ngx_int_t |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
160 ngx_stream_upstream_zone_copy_peers(ngx_slab_pool_t *shpool, |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
161 ngx_stream_upstream_srv_conf_t *uscf) |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
162 { |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
163 ngx_stream_upstream_rr_peer_t *peer, **peerp; |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
164 ngx_stream_upstream_rr_peers_t *peers, *backup; |
caa103acf180
Upstream: allow multiple upstreams to use the same shared zone.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
|
165 |
6115 | 166 peers = ngx_slab_alloc(shpool, sizeof(ngx_stream_upstream_rr_peers_t)); |
167 if (peers == NULL) { | |
168 return NGX_ERROR; | |
169 } | |
170 | |
171 ngx_memcpy(peers, uscf->peer.data, sizeof(ngx_stream_upstream_rr_peers_t)); | |
172 | |
173 peers->shpool = shpool; | |
174 | |
175 for (peerp = &peers->peer; *peerp; peerp = &peer->next) { | |
176 /* pool is unlocked */ | |
177 peer = ngx_slab_calloc_locked(shpool, | |
178 sizeof(ngx_stream_upstream_rr_peer_t)); | |
179 if (peer == NULL) { | |
180 return NGX_ERROR; | |
181 } | |
182 | |
183 ngx_memcpy(peer, *peerp, sizeof(ngx_stream_upstream_rr_peer_t)); | |
184 | |
185 *peerp = peer; | |
186 } | |
187 | |
188 if (peers->next == NULL) { | |
189 goto done; | |
190 } | |
191 | |
192 backup = ngx_slab_alloc(shpool, sizeof(ngx_stream_upstream_rr_peers_t)); | |
193 if (backup == NULL) { | |
194 return NGX_ERROR; | |
195 } | |
196 | |
197 ngx_memcpy(backup, peers->next, sizeof(ngx_stream_upstream_rr_peers_t)); | |
198 | |
199 backup->shpool = shpool; | |
200 | |
201 for (peerp = &backup->peer; *peerp; peerp = &peer->next) { | |
202 /* pool is unlocked */ | |
203 peer = ngx_slab_calloc_locked(shpool, | |
204 sizeof(ngx_stream_upstream_rr_peer_t)); | |
205 if (peer == NULL) { | |
206 return NGX_ERROR; | |
207 } | |
208 | |
209 ngx_memcpy(peer, *peerp, sizeof(ngx_stream_upstream_rr_peer_t)); | |
210 | |
211 *peerp = peer; | |
212 } | |
213 | |
214 peers->next = backup; | |
215 | |
216 done: | |
217 | |
218 uscf->peer.data = peers; | |
219 | |
220 return NGX_OK; | |
221 } |