Mercurial > hg > nginx-quic
annotate src/core/ngx_regex.c @ 7823:4e4485793418 quic
Added MAX_STREAM_DATA stub handler.
Currently sending code is ignoring this.
author | Vladimir Homutov <vl@nginx.com> |
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date | Mon, 20 Apr 2020 17:18:04 +0300 |
parents | f684178faec9 |
children | 2ca57257252d |
rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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12 typedef struct { |
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13 ngx_flag_t pcre_jit; |
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14 } ngx_regex_conf_t; |
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15 |
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16 |
503 | 17 static void * ngx_libc_cdecl ngx_regex_malloc(size_t size); |
18 static void ngx_libc_cdecl ngx_regex_free(void *p); | |
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19 #if (NGX_HAVE_PCRE_JIT) |
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20 static void ngx_pcre_free_studies(void *data); |
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21 #endif |
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23 static ngx_int_t ngx_regex_module_init(ngx_cycle_t *cycle); |
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24 |
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25 static void *ngx_regex_create_conf(ngx_cycle_t *cycle); |
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26 static char *ngx_regex_init_conf(ngx_cycle_t *cycle, void *conf); |
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27 |
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28 static char *ngx_regex_pcre_jit(ngx_conf_t *cf, void *post, void *data); |
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29 static ngx_conf_post_t ngx_regex_pcre_jit_post = { ngx_regex_pcre_jit }; |
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30 |
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31 |
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32 static ngx_command_t ngx_regex_commands[] = { |
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33 |
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34 { ngx_string("pcre_jit"), |
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35 NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_FLAG, |
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36 ngx_conf_set_flag_slot, |
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37 0, |
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38 offsetof(ngx_regex_conf_t, pcre_jit), |
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39 &ngx_regex_pcre_jit_post }, |
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40 |
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41 ngx_null_command |
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42 }; |
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43 |
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44 |
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45 static ngx_core_module_t ngx_regex_module_ctx = { |
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46 ngx_string("regex"), |
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47 ngx_regex_create_conf, |
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48 ngx_regex_init_conf |
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49 }; |
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50 |
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51 |
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52 ngx_module_t ngx_regex_module = { |
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53 NGX_MODULE_V1, |
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54 &ngx_regex_module_ctx, /* module context */ |
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55 ngx_regex_commands, /* module directives */ |
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56 NGX_CORE_MODULE, /* module type */ |
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57 NULL, /* init master */ |
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58 ngx_regex_module_init, /* init module */ |
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59 NULL, /* init process */ |
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60 NULL, /* init thread */ |
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61 NULL, /* exit thread */ |
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62 NULL, /* exit process */ |
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63 NULL, /* exit master */ |
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64 NGX_MODULE_V1_PADDING |
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65 }; |
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66 |
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67 |
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68 static ngx_pool_t *ngx_pcre_pool; |
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69 static ngx_list_t *ngx_pcre_studies; |
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70 |
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71 |
503 | 72 void |
73 ngx_regex_init(void) | |
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74 { |
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75 pcre_malloc = ngx_regex_malloc; |
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76 pcre_free = ngx_regex_free; |
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77 } |
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78 |
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79 |
3325 | 80 static ngx_inline void |
81 ngx_regex_malloc_init(ngx_pool_t *pool) | |
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82 { |
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83 ngx_pcre_pool = pool; |
3325 | 84 } |
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85 |
3325 | 86 |
87 static ngx_inline void | |
88 ngx_regex_malloc_done(void) | |
89 { | |
90 ngx_pcre_pool = NULL; | |
91 } | |
92 | |
93 | |
94 ngx_int_t | |
95 ngx_regex_compile(ngx_regex_compile_t *rc) | |
96 { | |
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97 int n, erroff; |
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98 char *p; |
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99 pcre *re; |
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100 const char *errstr; |
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101 ngx_regex_elt_t *elt; |
3325 | 102 |
103 ngx_regex_malloc_init(rc->pool); | |
104 | |
105 re = pcre_compile((const char *) rc->pattern.data, (int) rc->options, | |
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106 &errstr, &erroff, NULL); |
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107 |
3325 | 108 /* ensure that there is no current pool */ |
109 ngx_regex_malloc_done(); | |
110 | |
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111 if (re == NULL) { |
3325 | 112 if ((size_t) erroff == rc->pattern.len) { |
113 rc->err.len = ngx_snprintf(rc->err.data, rc->err.len, | |
114 "pcre_compile() failed: %s in \"%V\"", | |
115 errstr, &rc->pattern) | |
116 - rc->err.data; | |
117 | |
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118 } else { |
3325 | 119 rc->err.len = ngx_snprintf(rc->err.data, rc->err.len, |
120 "pcre_compile() failed: %s in \"%V\" at \"%s\"", | |
121 errstr, &rc->pattern, rc->pattern.data + erroff) | |
122 - rc->err.data; | |
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123 } |
3325 | 124 |
125 return NGX_ERROR; | |
126 } | |
127 | |
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128 rc->regex = ngx_pcalloc(rc->pool, sizeof(ngx_regex_t)); |
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129 if (rc->regex == NULL) { |
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130 goto nomem; |
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131 } |
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132 |
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133 rc->regex->code = re; |
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134 |
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135 /* do not study at runtime */ |
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136 |
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137 if (ngx_pcre_studies != NULL) { |
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138 elt = ngx_list_push(ngx_pcre_studies); |
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139 if (elt == NULL) { |
5824
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Core: ngx_regex_compile() error handling fixes.
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140 goto nomem; |
4388
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141 } |
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Added support for regex study and PCRE JIT (ticket #41) optimizations on
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142 |
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143 elt->regex = rc->regex; |
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144 elt->name = rc->pattern.data; |
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145 } |
3325 | 146 |
147 n = pcre_fullinfo(re, NULL, PCRE_INFO_CAPTURECOUNT, &rc->captures); | |
148 if (n < 0) { | |
149 p = "pcre_fullinfo(\"%V\", PCRE_INFO_CAPTURECOUNT) failed: %d"; | |
150 goto failed; | |
151 } | |
152 | |
153 if (rc->captures == 0) { | |
154 return NGX_OK; | |
195
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155 } |
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156 |
3325 | 157 n = pcre_fullinfo(re, NULL, PCRE_INFO_NAMECOUNT, &rc->named_captures); |
158 if (n < 0) { | |
159 p = "pcre_fullinfo(\"%V\", PCRE_INFO_NAMECOUNT) failed: %d"; | |
160 goto failed; | |
161 } | |
162 | |
163 if (rc->named_captures == 0) { | |
164 return NGX_OK; | |
165 } | |
294
5cfd65b8b0a7
nginx-0.0.3-2004-03-23-09:01:52 import
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diff
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166 |
3325 | 167 n = pcre_fullinfo(re, NULL, PCRE_INFO_NAMEENTRYSIZE, &rc->name_size); |
168 if (n < 0) { | |
169 p = "pcre_fullinfo(\"%V\", PCRE_INFO_NAMEENTRYSIZE) failed: %d"; | |
170 goto failed; | |
381
02a511569afb
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diff
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171 } |
3325 | 172 |
173 n = pcre_fullinfo(re, NULL, PCRE_INFO_NAMETABLE, &rc->names); | |
174 if (n < 0) { | |
175 p = "pcre_fullinfo(\"%V\", PCRE_INFO_NAMETABLE) failed: %d"; | |
176 goto failed; | |
177 } | |
294
5cfd65b8b0a7
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178 |
3325 | 179 return NGX_OK; |
180 | |
181 failed: | |
182 | |
183 rc->err.len = ngx_snprintf(rc->err.data, rc->err.len, p, &rc->pattern, n) | |
184 - rc->err.data; | |
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185 return NGX_ERROR; |
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Core: ngx_regex_compile() error handling fixes.
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186 |
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Core: ngx_regex_compile() error handling fixes.
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187 nomem: |
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Core: ngx_regex_compile() error handling fixes.
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188 |
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Core: ngx_regex_compile() error handling fixes.
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189 rc->err.len = ngx_snprintf(rc->err.data, rc->err.len, |
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190 "regex \"%V\" compilation failed: no memory", |
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191 &rc->pattern) |
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192 - rc->err.data; |
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193 return NGX_ERROR; |
195
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194 } |
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195 |
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196 |
503 | 197 ngx_int_t |
1784 | 198 ngx_regex_exec_array(ngx_array_t *a, ngx_str_t *s, ngx_log_t *log) |
199 { | |
200 ngx_int_t n; | |
201 ngx_uint_t i; | |
202 ngx_regex_elt_t *re; | |
203 | |
204 re = a->elts; | |
205 | |
206 for (i = 0; i < a->nelts; i++) { | |
207 | |
208 n = ngx_regex_exec(re[i].regex, s, NULL, 0); | |
209 | |
210 if (n == NGX_REGEX_NO_MATCHED) { | |
211 continue; | |
212 } | |
213 | |
214 if (n < 0) { | |
215 ngx_log_error(NGX_LOG_ALERT, log, 0, | |
3325 | 216 ngx_regex_exec_n " failed: %i on \"%V\" using \"%s\"", |
1784 | 217 n, s, re[i].name); |
218 return NGX_ERROR; | |
219 } | |
220 | |
221 /* match */ | |
222 | |
223 return NGX_OK; | |
224 } | |
225 | |
226 return NGX_DECLINED; | |
227 } | |
228 | |
229 | |
503 | 230 static void * ngx_libc_cdecl |
231 ngx_regex_malloc(size_t size) | |
195
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232 { |
381
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diff
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233 ngx_pool_t *pool; |
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diff
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234 pool = ngx_pcre_pool; |
3325 | 235 |
381
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diff
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236 if (pool) { |
2049 | 237 return ngx_palloc(pool, size); |
294
5cfd65b8b0a7
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238 } |
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239 |
5cfd65b8b0a7
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240 return NULL; |
195
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241 } |
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242 |
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243 |
503 | 244 static void ngx_libc_cdecl |
245 ngx_regex_free(void *p) | |
195
8dee38ea9117
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246 { |
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247 return; |
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248 } |
4388
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249 |
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Added support for regex study and PCRE JIT (ticket #41) optimizations on
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250 |
4423
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251 #if (NGX_HAVE_PCRE_JIT) |
196c3dacff0d
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252 |
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Fixed memory leak on HUP signal when PCRE JIT was used.
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253 static void |
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254 ngx_pcre_free_studies(void *data) |
196c3dacff0d
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255 { |
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256 ngx_list_t *studies = data; |
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257 |
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Fixed memory leak on HUP signal when PCRE JIT was used.
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258 ngx_uint_t i; |
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Fixed memory leak on HUP signal when PCRE JIT was used.
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259 ngx_list_part_t *part; |
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Fixed memory leak on HUP signal when PCRE JIT was used.
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260 ngx_regex_elt_t *elts; |
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261 |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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262 part = &studies->part; |
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Fixed memory leak on HUP signal when PCRE JIT was used.
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263 elts = part->elts; |
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Fixed memory leak on HUP signal when PCRE JIT was used.
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264 |
7088 | 265 for (i = 0; /* void */ ; i++) { |
4423
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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266 |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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|
267 if (i >= part->nelts) { |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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|
268 if (part->next == NULL) { |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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|
269 break; |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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|
270 } |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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|
271 |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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|
272 part = part->next; |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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|
273 elts = part->elts; |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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diff
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|
274 i = 0; |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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|
275 } |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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|
276 |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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changeset
|
277 if (elts[i].regex->extra != NULL) { |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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diff
changeset
|
278 pcre_free_study(elts[i].regex->extra); |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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|
279 } |
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Fixed memory leak on HUP signal when PCRE JIT was used.
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|
280 } |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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|
281 } |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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|
282 |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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|
283 #endif |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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|
284 |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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|
285 |
4388
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Added support for regex study and PCRE JIT (ticket #41) optimizations on
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|
286 static ngx_int_t |
005fc2d5e84f
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|
287 ngx_regex_module_init(ngx_cycle_t *cycle) |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
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|
288 { |
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Added support for regex study and PCRE JIT (ticket #41) optimizations on
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diff
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|
289 int opt; |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
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diff
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|
290 const char *errstr; |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
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diff
changeset
|
291 ngx_uint_t i; |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
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diff
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|
292 ngx_list_part_t *part; |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
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|
293 ngx_regex_elt_t *elts; |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
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|
294 |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
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|
295 opt = 0; |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
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|
296 |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
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|
297 #if (NGX_HAVE_PCRE_JIT) |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
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|
298 { |
4423
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Fixed memory leak on HUP signal when PCRE JIT was used.
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|
299 ngx_regex_conf_t *rcf; |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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|
300 ngx_pool_cleanup_t *cln; |
4388
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
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|
301 |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
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|
302 rcf = (ngx_regex_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_regex_module); |
005fc2d5e84f
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303 |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
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|
304 if (rcf->pcre_jit) { |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
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|
305 opt = PCRE_STUDY_JIT_COMPILE; |
4423
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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|
306 |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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diff
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|
307 /* |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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|
308 * The PCRE JIT compiler uses mmap for its executable codes, so we |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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|
309 * have to explicitly call the pcre_free_study() function to free |
196c3dacff0d
Fixed memory leak on HUP signal when PCRE JIT was used.
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|
310 * this memory. |
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Fixed memory leak on HUP signal when PCRE JIT was used.
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311 */ |
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312 |
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313 cln = ngx_pool_cleanup_add(cycle->pool, 0); |
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314 if (cln == NULL) { |
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315 return NGX_ERROR; |
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316 } |
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317 |
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318 cln->handler = ngx_pcre_free_studies; |
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319 cln->data = ngx_pcre_studies; |
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320 } |
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321 } |
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322 #endif |
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323 |
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324 ngx_regex_malloc_init(cycle->pool); |
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325 |
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326 part = &ngx_pcre_studies->part; |
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327 elts = part->elts; |
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328 |
7088 | 329 for (i = 0; /* void */ ; i++) { |
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330 |
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331 if (i >= part->nelts) { |
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332 if (part->next == NULL) { |
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333 break; |
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334 } |
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335 |
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336 part = part->next; |
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337 elts = part->elts; |
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338 i = 0; |
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339 } |
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340 |
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341 elts[i].regex->extra = pcre_study(elts[i].regex->code, opt, &errstr); |
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342 |
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343 if (errstr != NULL) { |
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344 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, |
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345 "pcre_study() failed: %s in \"%s\"", |
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346 errstr, elts[i].name); |
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347 } |
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348 |
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349 #if (NGX_HAVE_PCRE_JIT) |
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350 if (opt & PCRE_STUDY_JIT_COMPILE) { |
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351 int jit, n; |
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352 |
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353 jit = 0; |
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354 n = pcre_fullinfo(elts[i].regex->code, elts[i].regex->extra, |
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355 PCRE_INFO_JIT, &jit); |
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356 |
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357 if (n != 0 || jit != 1) { |
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358 ngx_log_error(NGX_LOG_INFO, cycle->log, 0, |
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359 "JIT compiler does not support pattern: \"%s\"", |
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360 elts[i].name); |
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361 } |
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362 } |
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363 #endif |
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364 } |
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365 |
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366 ngx_regex_malloc_done(); |
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367 |
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368 ngx_pcre_studies = NULL; |
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369 |
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370 return NGX_OK; |
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371 } |
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372 |
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373 |
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374 static void * |
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375 ngx_regex_create_conf(ngx_cycle_t *cycle) |
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376 { |
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377 ngx_regex_conf_t *rcf; |
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378 |
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379 rcf = ngx_pcalloc(cycle->pool, sizeof(ngx_regex_conf_t)); |
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380 if (rcf == NULL) { |
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381 return NULL; |
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382 } |
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383 |
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384 rcf->pcre_jit = NGX_CONF_UNSET; |
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385 |
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386 ngx_pcre_studies = ngx_list_create(cycle->pool, 8, sizeof(ngx_regex_elt_t)); |
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387 if (ngx_pcre_studies == NULL) { |
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388 return NULL; |
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389 } |
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390 |
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391 return rcf; |
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392 } |
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393 |
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394 |
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395 static char * |
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396 ngx_regex_init_conf(ngx_cycle_t *cycle, void *conf) |
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397 { |
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398 ngx_regex_conf_t *rcf = conf; |
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399 |
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400 ngx_conf_init_value(rcf->pcre_jit, 0); |
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401 |
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402 return NGX_CONF_OK; |
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403 } |
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404 |
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405 |
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406 static char * |
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407 ngx_regex_pcre_jit(ngx_conf_t *cf, void *post, void *data) |
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408 { |
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409 ngx_flag_t *fp = data; |
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410 |
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411 if (*fp == 0) { |
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412 return NGX_CONF_OK; |
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413 } |
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414 |
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415 #if (NGX_HAVE_PCRE_JIT) |
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416 { |
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417 int jit, r; |
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418 |
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419 jit = 0; |
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420 r = pcre_config(PCRE_CONFIG_JIT, &jit); |
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421 |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
Valentin Bartenev <vbart@nginx.com>
parents:
4326
diff
changeset
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422 if (r != 0 || jit != 1) { |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
Valentin Bartenev <vbart@nginx.com>
parents:
4326
diff
changeset
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423 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
Valentin Bartenev <vbart@nginx.com>
parents:
4326
diff
changeset
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424 "PCRE library does not support JIT"); |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
Valentin Bartenev <vbart@nginx.com>
parents:
4326
diff
changeset
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425 *fp = 0; |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
Valentin Bartenev <vbart@nginx.com>
parents:
4326
diff
changeset
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426 } |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
Valentin Bartenev <vbart@nginx.com>
parents:
4326
diff
changeset
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427 } |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
Valentin Bartenev <vbart@nginx.com>
parents:
4326
diff
changeset
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428 #else |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
Valentin Bartenev <vbart@nginx.com>
parents:
4326
diff
changeset
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429 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, |
4413
23ea4e72c85a
Fixed grammar in PCRE JIT error log message.
Valentin Bartenev <vbart@nginx.com>
parents:
4412
diff
changeset
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430 "nginx was built without PCRE JIT support"); |
4388
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
Valentin Bartenev <vbart@nginx.com>
parents:
4326
diff
changeset
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431 *fp = 0; |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
Valentin Bartenev <vbart@nginx.com>
parents:
4326
diff
changeset
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432 #endif |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
Valentin Bartenev <vbart@nginx.com>
parents:
4326
diff
changeset
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433 |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
Valentin Bartenev <vbart@nginx.com>
parents:
4326
diff
changeset
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434 return NGX_CONF_OK; |
005fc2d5e84f
Added support for regex study and PCRE JIT (ticket #41) optimizations on
Valentin Bartenev <vbart@nginx.com>
parents:
4326
diff
changeset
|
435 } |