Mercurial > hg > nginx-quic
annotate src/stream/ngx_stream_upstream_zone_module.c @ 6572:bc6fd7afeed6
HTTP/2: unbreak build on MSVC.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Tue, 24 May 2016 21:54:32 +0300 |
parents | 341e4303d25b |
children | 2f41d383c9c7 |
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); | |
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17 static ngx_stream_upstream_rr_peers_t *ngx_stream_upstream_zone_copy_peers( |
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18 ngx_slab_pool_t *shpool, 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"), | |
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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 = { | |
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35 NULL, /* postconfiguration */ |
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36 |
6115 | 37 NULL, /* create main configuration */ |
38 NULL, /* init main configuration */ | |
39 | |
40 NULL, /* create server configuration */ | |
41 NULL, /* merge server configuration */ | |
42 }; | |
43 | |
44 | |
45 ngx_module_t ngx_stream_upstream_zone_module = { | |
46 NGX_MODULE_V1, | |
47 &ngx_stream_upstream_zone_module_ctx, /* module context */ | |
48 ngx_stream_upstream_zone_commands, /* module directives */ | |
49 NGX_STREAM_MODULE, /* module type */ | |
50 NULL, /* init master */ | |
51 NULL, /* init module */ | |
52 NULL, /* init process */ | |
53 NULL, /* init thread */ | |
54 NULL, /* exit thread */ | |
55 NULL, /* exit process */ | |
56 NULL, /* exit master */ | |
57 NGX_MODULE_V1_PADDING | |
58 }; | |
59 | |
60 | |
61 static char * | |
62 ngx_stream_upstream_zone(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
63 { | |
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64 ssize_t size; |
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65 ngx_str_t *value; |
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66 ngx_stream_upstream_srv_conf_t *uscf; |
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67 ngx_stream_upstream_main_conf_t *umcf; |
6115 | 68 |
69 uscf = ngx_stream_conf_get_module_srv_conf(cf, ngx_stream_upstream_module); | |
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70 umcf = ngx_stream_conf_get_module_main_conf(cf, ngx_stream_upstream_module); |
6115 | 71 |
72 value = cf->args->elts; | |
73 | |
74 if (!value[1].len) { | |
75 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
76 "invalid zone name \"%V\"", &value[1]); | |
77 return NGX_CONF_ERROR; | |
78 } | |
79 | |
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80 if (cf->args->nelts == 3) { |
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81 size = ngx_parse_size(&value[2]); |
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82 |
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83 if (size == NGX_ERROR) { |
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84 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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85 "invalid zone size \"%V\"", &value[2]); |
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86 return NGX_CONF_ERROR; |
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87 } |
6115 | 88 |
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89 if (size < (ssize_t) (8 * ngx_pagesize)) { |
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90 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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91 "zone \"%V\" is too small", &value[1]); |
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92 return NGX_CONF_ERROR; |
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93 } |
6115 | 94 |
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95 } else { |
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96 size = 0; |
6115 | 97 } |
98 | |
99 uscf->shm_zone = ngx_shared_memory_add(cf, &value[1], size, | |
100 &ngx_stream_upstream_module); | |
101 if (uscf->shm_zone == NULL) { | |
102 return NGX_CONF_ERROR; | |
103 } | |
104 | |
105 uscf->shm_zone->init = ngx_stream_upstream_init_zone; | |
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106 uscf->shm_zone->data = umcf; |
6115 | 107 |
108 uscf->shm_zone->noreuse = 1; | |
109 | |
110 return NGX_CONF_OK; | |
111 } | |
112 | |
113 | |
114 static ngx_int_t | |
115 ngx_stream_upstream_init_zone(ngx_shm_zone_t *shm_zone, void *data) | |
116 { | |
117 size_t len; | |
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118 ngx_uint_t i; |
6115 | 119 ngx_slab_pool_t *shpool; |
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120 ngx_stream_upstream_rr_peers_t *peers, **peersp; |
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121 ngx_stream_upstream_srv_conf_t *uscf, **uscfp; |
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122 ngx_stream_upstream_main_conf_t *umcf; |
6115 | 123 |
124 shpool = (ngx_slab_pool_t *) shm_zone->shm.addr; | |
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125 umcf = shm_zone->data; |
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126 uscfp = umcf->upstreams.elts; |
6115 | 127 |
128 if (shm_zone->shm.exists) { | |
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129 peers = shpool->data; |
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130 |
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131 for (i = 0; i < umcf->upstreams.nelts; i++) { |
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132 uscf = uscfp[i]; |
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133 |
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134 if (uscf->shm_zone != shm_zone) { |
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135 continue; |
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136 } |
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137 |
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138 uscf->peer.data = peers; |
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139 peers = peers->zone_next; |
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140 } |
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141 |
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142 return NGX_OK; |
6115 | 143 } |
144 | |
145 len = sizeof(" in upstream zone \"\"") + shm_zone->shm.name.len; | |
146 | |
147 shpool->log_ctx = ngx_slab_alloc(shpool, len); | |
148 if (shpool->log_ctx == NULL) { | |
149 return NGX_ERROR; | |
150 } | |
151 | |
152 ngx_sprintf(shpool->log_ctx, " in upstream zone \"%V\"%Z", | |
153 &shm_zone->shm.name); | |
154 | |
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155 |
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156 /* copy peers to shared memory */ |
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157 |
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158 peersp = (ngx_stream_upstream_rr_peers_t **) (void *) &shpool->data; |
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159 |
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160 for (i = 0; i < umcf->upstreams.nelts; i++) { |
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161 uscf = uscfp[i]; |
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162 |
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163 if (uscf->shm_zone != shm_zone) { |
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164 continue; |
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165 } |
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166 |
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167 peers = ngx_stream_upstream_zone_copy_peers(shpool, uscf); |
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168 if (peers == NULL) { |
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169 return NGX_ERROR; |
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170 } |
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171 |
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172 *peersp = peers; |
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173 peersp = &peers->zone_next; |
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174 } |
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175 |
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176 return NGX_OK; |
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177 } |
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178 |
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179 |
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180 static ngx_stream_upstream_rr_peers_t * |
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181 ngx_stream_upstream_zone_copy_peers(ngx_slab_pool_t *shpool, |
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182 ngx_stream_upstream_srv_conf_t *uscf) |
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183 { |
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184 ngx_stream_upstream_rr_peer_t *peer, **peerp; |
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185 ngx_stream_upstream_rr_peers_t *peers, *backup; |
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186 |
6115 | 187 peers = ngx_slab_alloc(shpool, sizeof(ngx_stream_upstream_rr_peers_t)); |
188 if (peers == NULL) { | |
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189 return NULL; |
6115 | 190 } |
191 | |
192 ngx_memcpy(peers, uscf->peer.data, sizeof(ngx_stream_upstream_rr_peers_t)); | |
193 | |
194 peers->shpool = shpool; | |
195 | |
196 for (peerp = &peers->peer; *peerp; peerp = &peer->next) { | |
197 /* pool is unlocked */ | |
198 peer = ngx_slab_calloc_locked(shpool, | |
199 sizeof(ngx_stream_upstream_rr_peer_t)); | |
200 if (peer == NULL) { | |
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201 return NULL; |
6115 | 202 } |
203 | |
204 ngx_memcpy(peer, *peerp, sizeof(ngx_stream_upstream_rr_peer_t)); | |
205 | |
206 *peerp = peer; | |
207 } | |
208 | |
209 if (peers->next == NULL) { | |
210 goto done; | |
211 } | |
212 | |
213 backup = ngx_slab_alloc(shpool, sizeof(ngx_stream_upstream_rr_peers_t)); | |
214 if (backup == NULL) { | |
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215 return NULL; |
6115 | 216 } |
217 | |
218 ngx_memcpy(backup, peers->next, sizeof(ngx_stream_upstream_rr_peers_t)); | |
219 | |
220 backup->shpool = shpool; | |
221 | |
222 for (peerp = &backup->peer; *peerp; peerp = &peer->next) { | |
223 /* pool is unlocked */ | |
224 peer = ngx_slab_calloc_locked(shpool, | |
225 sizeof(ngx_stream_upstream_rr_peer_t)); | |
226 if (peer == NULL) { | |
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227 return NULL; |
6115 | 228 } |
229 | |
230 ngx_memcpy(peer, *peerp, sizeof(ngx_stream_upstream_rr_peer_t)); | |
231 | |
232 *peerp = peer; | |
233 } | |
234 | |
235 peers->next = backup; | |
236 | |
237 done: | |
238 | |
239 uscf->peer.data = peers; | |
240 | |
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parents:
6174
diff
changeset
|
241 return peers; |
6115 | 242 } |