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comparison src/http/ngx_http_cache.h @ 201:267ea1d98683

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nginx-0.0.1-2003-11-30-23:03:18 import
author Igor Sysoev <igor@sysoev.ru>
date Sun, 30 Nov 2003 20:03:18 +0000
parents abeaebe0a33c
children 74994aeef848
comparison
equal deleted inserted replaced
200:abeaebe0a33c 201:267ea1d98683
5 #include <ngx_config.h> 5 #include <ngx_config.h>
6 #include <ngx_core.h> 6 #include <ngx_core.h>
7 #include <ngx_http.h> 7 #include <ngx_http.h>
8 8
9 9
10 /*
11 * The 7 uses before an allocation.
12 * We can use maximum 7 bits, i.e up to the 127 uses.
13 */
14 #define NGX_HTTP_CACHE_LAZY_ALLOCATION_BITS 3
15
10 typedef struct { 16 typedef struct {
11 uint32_t crc; 17 uint32_t crc;
12 ngx_str_t key; 18 ngx_str_t key;
13 time_t accessed; 19 time_t accessed;
14 20
15 unsigned refs:20; /* 1048576 references */ 21 unsigned refs:20; /* 1048576 references */
16 unsigned count:2; /* lazy allocation: the 4 uses */
17 unsigned deleted:1;
18 22
19 ngx_fd_t fd; 23 unsigned count:NGX_HTTP_CACHE_LAZY_ALLOCATION_BITS;
20 time_t last_modified; 24
21 time_t updated; 25 unsigned valid:1;
26 unsigned deleted:1;
27 unsigned memory:1;
28 unsigned mmap:1;
29 unsigned notify:1;
30
31 ngx_fd_t fd;
32 #if (NGX_USE_HTTP_FILE_CACHE_UNIQ)
33 ngx_file_uniq_t uniq; /* no needed with kqueue */
34 #endif
35 time_t last_modified;
36 time_t updated;
22 37
23 union { 38 union {
24 off_t size; 39 off_t size;
25 ngx_str_t value; 40 ngx_str_t value;
26 } data; 41 } data;
27 } ngx_http_cache_t; 42 } ngx_http_cache_t;
28 43
29 44
30 typedef struct { 45 typedef struct {
67 size_t file_start; 82 size_t file_start;
68 ngx_log_t *log; 83 ngx_log_t *log;
69 } ngx_http_cache_ctx_t; 84 } ngx_http_cache_ctx_t;
70 85
71 86
72 typedef struct {
73 ngx_http_cache_hash_t *open_files;
74 } ngx_http_cache_conf_t;
75
76
77 87
78 #define NGX_HTTP_CACHE_STALE 1 88 #define NGX_HTTP_CACHE_STALE 1
79 #define NGX_HTTP_CACHE_AGED 2 89 #define NGX_HTTP_CACHE_AGED 2
80 #define NGX_HTTP_CACHE_THE_SAME 3 90 #define NGX_HTTP_CACHE_THE_SAME 3
81 91
82 92
93 ngx_http_cache_t *ngx_http_cache_get(ngx_http_cache_hash_t *cache,
94 ngx_http_cleanup_t *cleanup,
95 ngx_str_t *key, uint32_t *crc);
96
97 ngx_http_cache_t *ngx_http_cache_alloc(ngx_http_cache_hash_t *hash,
98 ngx_http_cache_t *cache,
99 ngx_http_cleanup_t *cleanup,
100 ngx_str_t *key, uint32_t crc,
101 ngx_str_t *value, ngx_log_t *log);
102 void ngx_http_cache_free(ngx_http_cache_t *cache,
103 ngx_str_t *key, ngx_str_t *value, ngx_log_t *log);
104 void ngx_http_cache_unlock(ngx_http_cache_hash_t *hash,
105 ngx_http_cache_t *cache, ngx_log_t *log);
106
83 int ngx_http_cache_get_file(ngx_http_request_t *r, ngx_http_cache_ctx_t *ctx); 107 int ngx_http_cache_get_file(ngx_http_request_t *r, ngx_http_cache_ctx_t *ctx);
84 int ngx_http_cache_open_file(ngx_http_cache_ctx_t *ctx, ngx_file_uniq_t uniq); 108 int ngx_http_cache_open_file(ngx_http_cache_ctx_t *ctx, ngx_file_uniq_t uniq);
85 int ngx_http_cache_update_file(ngx_http_request_t *r,ngx_http_cache_ctx_t *ctx, 109 int ngx_http_cache_update_file(ngx_http_request_t *r,ngx_http_cache_ctx_t *ctx,
86 ngx_str_t *temp_file); 110 ngx_str_t *temp_file);
87 111
88 ngx_http_cache_t *ngx_http_cache_get(ngx_http_cache_hash_t *cache, 112 int ngx_http_send_cached(ngx_http_request_t *r);
89 ngx_str_t *key, uint32_t *crc);
90 ngx_http_cache_t *ngx_http_cache_alloc(ngx_http_cache_hash_t *cache,
91 ngx_str_t *key, uint32_t crc,
92 ngx_log_t *log);
93 void ngx_http_cache_unlock(ngx_http_cache_hash_t *hash,
94 ngx_http_cache_t *cache, ngx_log_t *log);
95 113
96 114
97 int ngx_garbage_collector_http_cache_handler(ngx_gc_t *gc, ngx_str_t *name, 115 int ngx_garbage_collector_http_cache_handler(ngx_gc_t *gc, ngx_str_t *name,
98 ngx_dir_t *dir); 116 ngx_dir_t *dir);
99 117
100 char *ngx_http_set_cache_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); 118 char *ngx_http_set_cache_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
101 119
102 120
103 extern ngx_module_t ngx_http_cache_module;
104
105
106
107 #endif /* _NGX_HTTP_CACHE_H_INCLUDED_ */ 121 #endif /* _NGX_HTTP_CACHE_H_INCLUDED_ */