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annotate src/http/ngx_http_cache.c @ 97:70d2345a903f

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nginx-0.0.1-2003-05-29-17:02:09 import
author Igor Sysoev <igor@sysoev.ru>
date Thu, 29 May 2003 13:02:09 +0000
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children a059e1aa65d4
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70d2345a903f nginx-0.0.1-2003-05-29-17:02:09 import
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70d2345a903f nginx-0.0.1-2003-05-29-17:02:09 import
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4 #define NGX_HTTP_CACHE_ENTRY_DELETED 0x00000001
70d2345a903f nginx-0.0.1-2003-05-29-17:02:09 import
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5 #define NGX_HTTP_CACHE_ENTRY_MMAPED 0x00000002
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7 /* "/" -> "/index.html" in ngx_http_index_handler */
70d2345a903f nginx-0.0.1-2003-05-29-17:02:09 import
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8 #define NGX_HTTP_CACHE_ENTRY_URI 0x00000004
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10 #define NGX_HTTP_CACHE_FILTER_FLAGS 0xFFFF0000
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70d2345a903f nginx-0.0.1-2003-05-29-17:02:09 import
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13 typedef struct {
70d2345a903f nginx-0.0.1-2003-05-29-17:02:09 import
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14 ngx_fd_t fd;
70d2345a903f nginx-0.0.1-2003-05-29-17:02:09 import
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15 off_t size;
70d2345a903f nginx-0.0.1-2003-05-29-17:02:09 import
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16 void *data;
70d2345a903f nginx-0.0.1-2003-05-29-17:02:09 import
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17 time_t accessed;
70d2345a903f nginx-0.0.1-2003-05-29-17:02:09 import
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18 time_t last_modified;
70d2345a903f nginx-0.0.1-2003-05-29-17:02:09 import
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19 time_t updated; /* no needed with kqueue */
70d2345a903f nginx-0.0.1-2003-05-29-17:02:09 import
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20 int refs;
70d2345a903f nginx-0.0.1-2003-05-29-17:02:09 import
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21 int flags;
70d2345a903f nginx-0.0.1-2003-05-29-17:02:09 import
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22 } ngx_http_cache_entry_t;
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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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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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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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45 h->crc = ngx_crc32(uri->data, uri->len);
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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
70d2345a903f nginx-0.0.1-2003-05-29-17:02:09 import
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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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62 return NGX_ERROR;
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63 }