Mercurial > hg > nginx
annotate src/core/ngx_palloc.c @ 629:65bf042c0b4f release-0.3.36
nginx-0.3.36-RELEASE import
*) Feature: the ngx_http_addition_filter_module.
*) Feature: the "proxy_pass" and "fastcgi_pass" directives may be used
inside the "if" block.
*) Feature: the "proxy_ignore_client_abort" and
"fastcgi_ignore_client_abort" directives.
*) Feature: the "$request_completion" variable.
*) Feature: the ngx_http_perl_module supports the $r->request_method
and $r->remote_addr.
*) Feature: the ngx_http_ssi_module supports the "elif" command.
*) Bugfix: the "\/" string in the expression of the "if" command of the
ngx_http_ssi_module was treated incorrectly.
*) Bugfix: in the regular expressions in the "if" command of the
ngx_http_ssi_module.
*) Bugfix: if the relative path was specified in the
"client_body_temp_path", "proxy_temp_path", "fastcgi_temp_path", and
"perl_modules" directives, then the directory was used relatively to
a current path but not to a server prefix.
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Wed, 05 Apr 2006 13:40:54 +0000 |
| parents | 5dac8c7fb71b |
| children | 201d017ea470 |
| rev | line source |
|---|---|
|
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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6 |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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10 |
| 501 | 11 ngx_pool_t * |
| 12 ngx_create_pool(size_t size, ngx_log_t *log) | |
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13 { |
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14 ngx_pool_t *p; |
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15 |
| 501 | 16 p = ngx_alloc(size, log); |
| 17 if (p == NULL) { | |
| 527 | 18 return NULL; |
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19 } |
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20 |
| 485 | 21 p->last = (u_char *) p + sizeof(ngx_pool_t); |
| 22 p->end = (u_char *) p + size; | |
| 581 | 23 p->current = p; |
| 24 p->chain = NULL; | |
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25 p->next = NULL; |
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26 p->large = NULL; |
| 509 | 27 p->cleanup = NULL; |
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28 p->log = log; |
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29 |
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30 return p; |
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31 } |
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32 |
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33 |
| 501 | 34 void |
| 35 ngx_destroy_pool(ngx_pool_t *pool) | |
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36 { |
| 509 | 37 ngx_pool_t *p, *n; |
| 38 ngx_pool_large_t *l; | |
| 39 ngx_pool_cleanup_t *c; | |
| 40 | |
| 41 for (c = pool->cleanup; c; c = c->next) { | |
| 42 if (c->handler) { | |
| 43 c->handler(c->data); | |
| 44 } | |
| 45 } | |
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46 |
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47 for (l = pool->large; l; l = l->next) { |
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48 |
| 461 | 49 ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0, "free: %p", l->alloc); |
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50 |
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51 if (l->alloc) { |
| 477 | 52 ngx_free(l->alloc); |
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53 } |
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54 } |
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55 |
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56 #if (NGX_DEBUG) |
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57 |
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58 /* |
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59 * we could allocate the pool->log from this pool |
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60 * so we can not use this log while the free()ing the pool |
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61 */ |
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62 |
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63 for (p = pool, n = pool->next; /* void */; p = n, n = n->next) { |
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64 ngx_log_debug2(NGX_LOG_DEBUG_ALLOC, pool->log, 0, |
| 461 | 65 "free: %p, unused: %uz", p, p->end - p->last); |
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66 |
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67 if (n == NULL) { |
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68 break; |
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69 } |
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70 } |
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71 |
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72 #endif |
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73 |
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74 for (p = pool, n = pool->next; /* void */; p = n, n = n->next) { |
| 477 | 75 ngx_free(p); |
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76 |
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77 if (n == NULL) { |
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78 break; |
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79 } |
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80 } |
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81 } |
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82 |
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83 |
| 501 | 84 void * |
| 85 ngx_palloc(ngx_pool_t *pool, size_t size) | |
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86 { |
| 485 | 87 u_char *m; |
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88 ngx_pool_t *p, *n; |
| 629 | 89 ngx_pool_large_t *large; |
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90 |
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91 if (size <= (size_t) NGX_MAX_ALLOC_FROM_POOL |
| 485 | 92 && size <= (size_t) (pool->end - (u_char *) pool) |
| 589 | 93 - (size_t) ngx_align_ptr(sizeof(ngx_pool_t), NGX_ALIGNMENT)) |
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94 { |
| 581 | 95 for (p = pool->current; /* void */ ; p = p->next) { |
| 589 | 96 |
| 97 if (size < sizeof(int) || (size & 1)) { | |
| 98 m = p->last; | |
| 99 | |
| 100 } else { | |
| 101 m = ngx_align_ptr(p->last, NGX_ALIGNMENT); | |
| 102 } | |
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103 |
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104 if ((size_t) (p->end - m) >= size) { |
| 452 | 105 p->last = m + size; |
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106 |
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107 return m; |
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108 } |
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109 |
| 581 | 110 if ((size_t) (p->end - m) < NGX_ALIGNMENT) { |
| 583 | 111 pool->current = p->next; |
| 581 | 112 } |
| 113 | |
| 114 if (p->next == NULL) { | |
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115 break; |
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116 } |
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117 } |
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118 |
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119 /* allocate a new pool block */ |
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120 |
| 501 | 121 n = ngx_create_pool((size_t) (p->end - (u_char *) p), p->log); |
| 122 if (n == NULL) { | |
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123 return NULL; |
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124 } |
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125 |
| 583 | 126 if (pool->current == NULL) { |
| 127 pool->current = n; | |
| 581 | 128 } |
| 129 | |
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130 p->next = n; |
| 589 | 131 m = ngx_align_ptr(n->last, NGX_ALIGNMENT); |
| 452 | 132 n->last = m + size; |
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133 |
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134 return m; |
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135 } |
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136 |
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137 #if 0 |
| 501 | 138 p = ngx_memalign(ngx_pagesize, size, pool->log); |
| 139 if (p == NULL) { | |
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140 return NULL; |
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141 } |
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142 #else |
| 501 | 143 p = ngx_alloc(size, pool->log); |
| 144 if (p == NULL) { | |
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145 return NULL; |
|
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146 } |
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147 #endif |
|
0
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148 |
| 629 | 149 large = ngx_palloc(pool, sizeof(ngx_pool_large_t)); |
| 150 if (large == NULL) { | |
| 151 return NULL; | |
|
156
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152 } |
|
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153 |
|
156
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154 large->alloc = p; |
| 629 | 155 large->next = pool->large; |
| 156 pool->large = large; | |
|
156
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157 |
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158 return p; |
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159 } |
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160 |
|
0
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161 |
| 501 | 162 ngx_int_t |
| 163 ngx_pfree(ngx_pool_t *pool, void *p) | |
|
156
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164 { |
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165 ngx_pool_large_t *l; |
|
0
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166 |
|
156
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167 for (l = pool->large; l; l = l->next) { |
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168 if (p == l->alloc) { |
|
257
70e1c7d2b83d
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169 ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0, |
| 461 | 170 "free: %p", l->alloc); |
| 477 | 171 ngx_free(l->alloc); |
|
156
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172 l->alloc = NULL; |
|
436
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429
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173 |
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174 return NGX_OK; |
|
156
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175 } |
|
0
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176 } |
|
436
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177 |
|
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178 return NGX_DECLINED; |
|
0
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179 } |
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180 |
|
156
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181 |
| 501 | 182 void * |
| 183 ngx_pcalloc(ngx_pool_t *pool, size_t size) | |
|
0
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184 { |
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185 void *p; |
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186 |
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187 p = ngx_palloc(pool, size); |
|
39
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188 if (p) { |
|
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189 ngx_memzero(p, size); |
|
39
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190 } |
|
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191 |
|
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192 return p; |
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193 } |
|
346
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194 |
| 509 | 195 |
| 605 | 196 void * |
| 197 ngx_shalloc(size_t size) | |
| 198 { | |
| 199 u_char *p; | |
| 200 | |
| 201 if (size < sizeof(int) || (size & 1)) { | |
| 202 p = ngx_cycle->shm_last; | |
| 203 | |
| 204 } else { | |
| 205 p = ngx_align_ptr(ngx_cycle->shm_last, NGX_ALIGNMENT); | |
| 206 } | |
| 207 | |
| 208 if ((size_t) (ngx_cycle->shm_end - p) >= size) { | |
| 209 ngx_cycle->shm_last = p + size; | |
| 210 return p; | |
| 211 } | |
| 212 | |
| 213 ngx_log_error(NGX_LOG_EMERG, ngx_cycle->log, 0, | |
| 214 "allocation of %uz bytes in shared memory failed, " | |
| 215 "only %uz are available", | |
| 216 size, ngx_cycle->shm_end - ngx_cycle->shm_last); | |
| 217 | |
| 218 return NULL; | |
| 219 } | |
| 220 | |
| 221 | |
| 222 void * | |
| 223 ngx_shcalloc(size_t size) | |
| 224 { | |
| 225 void *p; | |
| 226 | |
| 227 p = ngx_shalloc(size); | |
| 228 if (p) { | |
| 229 ngx_memzero(p, size); | |
| 230 } | |
| 231 | |
| 232 return p; | |
| 233 } | |
| 234 | |
| 235 | |
| 509 | 236 ngx_pool_cleanup_t * |
| 563 | 237 ngx_pool_cleanup_add(ngx_pool_t *p, size_t size) |
| 509 | 238 { |
| 239 ngx_pool_cleanup_t *c; | |
| 240 | |
| 241 c = ngx_palloc(p, sizeof(ngx_pool_cleanup_t)); | |
| 242 if (c == NULL) { | |
| 243 return NULL; | |
| 244 } | |
| 245 | |
| 563 | 246 if (size) { |
| 247 c->data = ngx_palloc(p, size); | |
| 248 if (c->data == NULL) { | |
| 249 return NULL; | |
| 250 } | |
| 251 | |
| 252 } else { | |
| 253 c->data = NULL; | |
| 254 } | |
| 255 | |
| 256 c->handler = NULL; | |
| 509 | 257 c->next = p->cleanup; |
| 258 | |
| 259 p->cleanup = c; | |
| 260 | |
| 563 | 261 ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, p->log, 0, "add cleanup: %p", c); |
| 262 | |
| 509 | 263 return c; |
| 264 } | |
| 265 | |
| 266 | |
| 267 void | |
| 268 ngx_pool_cleanup_file(void *data) | |
| 269 { | |
| 270 ngx_pool_cleanup_file_t *c = data; | |
| 271 | |
| 563 | 272 ngx_log_debug2(NGX_LOG_DEBUG_ALLOC, c->log, 0, "run cleanup: %p, fd:%d", |
| 273 c, c->fd); | |
| 274 | |
| 509 | 275 if (ngx_close_file(c->fd) == NGX_FILE_ERROR) { |
| 276 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, | |
| 277 ngx_close_file_n " \"%s\" failed", c->name); | |
| 278 } | |
| 279 } | |
| 280 | |
| 281 | |
|
346
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282 #if 0 |
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283 |
| 501 | 284 static void * |
| 285 ngx_get_cached_block(size_t size) | |
|
346
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286 { |
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287 void *p; |
|
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288 ngx_cached_block_slot_t *slot; |
|
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289 |
|
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290 if (ngx_cycle->cache == NULL) { |
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291 return NULL; |
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292 } |
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293 |
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294 slot = &ngx_cycle->cache[(size + ngx_pagesize - 1) / ngx_pagesize]; |
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295 |
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296 slot->tries++; |
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297 |
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298 if (slot->number) { |
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299 p = slot->block; |
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300 slot->block = slot->block->next; |
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301 slot->number--; |
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302 return p; |
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303 } |
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304 |
|
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305 return NULL; |
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306 } |
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307 |
|
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308 #endif |