Mercurial > hg > nginx
annotate src/http/ngx_http_cache.c @ 97:70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Thu, 29 May 2003 13:02:09 +0000 |
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children | a059e1aa65d4 |
rev | line source |
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97
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nginx-0.0.1-2003-05-29-17:02:09 import
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1 |
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2 |
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4 #define NGX_HTTP_CACHE_ENTRY_DELETED 0x00000001 |
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5 #define NGX_HTTP_CACHE_ENTRY_MMAPED 0x00000002 |
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6 |
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7 /* "/" -> "/index.html" in ngx_http_index_handler */ |
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8 #define NGX_HTTP_CACHE_ENTRY_URI 0x00000004 |
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9 |
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10 #define NGX_HTTP_CACHE_FILTER_FLAGS 0xFFFF0000 |
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11 |
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12 |
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13 typedef struct { |
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14 ngx_fd_t fd; |
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15 off_t size; |
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16 void *data; |
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17 time_t accessed; |
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18 time_t last_modified; |
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19 time_t updated; /* no needed with kqueue */ |
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20 int refs; |
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21 int flags; |
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22 } ngx_http_cache_entry_t; |
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23 |
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24 |
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25 typedef struct { |
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26 u_int32_t crc; |
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27 ngx_str_t uri; |
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28 ngx_http_cache_t *cache; |
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29 } ngx_http_cache_hash_entry_t; |
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30 |
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31 |
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32 typedef struct { |
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33 ngx_http_cache_t *cache; |
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34 u_int32_t crc; |
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35 int n; |
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36 } ngx_http_cache_handle_t; |
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37 |
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38 |
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39 int ngx_http_cache_get(ngx_http_cache_hash_t *cache_hash, |
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40 ngx_str_t *uri, ngx_http_cache_handle_t *h) |
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41 { |
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42 int hi; |
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43 ngx_http_cache_hash_entry_t *entry; |
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44 |
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45 h->crc = ngx_crc32(uri->data, uri->len); |
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46 |
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47 hi = h->crc % cache_hash->size; |
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48 entry = cache_hash[hi].elts; |
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49 |
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50 for (i = 0; i < cache_hash[hi].nelts; i++) { |
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51 if (entry[i].crc == crc |
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52 && entry[i].uri.len == uri->len |
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53 && ngx_strncmp(entry[i].uri.data, uri->data, uri->len) == 0 |
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54 { |
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55 h->cache = entry[i].cache; |
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56 h->cache->refs++; |
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57 h->n = hi; |
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58 return NGX_OK; |
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59 } |
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60 } |
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61 |
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62 return NGX_ERROR; |
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63 } |