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comparison src/http/ngx_http_cache.h @ 464:c8cfb6c462ef NGINX_0_7_44

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nginx 0.7.44 *) Feature: the ngx_http_proxy_module preliminary cache support. *) Feature: the --with-pcre option in the configure. *) Feature: the "try_files" directive is now allowed on the server block level. *) Bugfix: the "try_files" directive handled incorrectly a query string in a fallback parameter. *) Bugfix: the "try_files" directive might test incorrectly directories. *) Bugfix: if there is the single server for given address:port pair, then captures in regular expressions in a "server_name" directive did not work.
author Igor Sysoev <http://sysoev.ru>
date Mon, 23 Mar 2009 00:00:00 +0300
parents 45fe5b98a9de
children 56baf312c1b5
comparison
equal deleted inserted replaced
463:51cb914e6d3a 464:c8cfb6c462ef
11 #include <ngx_config.h> 11 #include <ngx_config.h>
12 #include <ngx_core.h> 12 #include <ngx_core.h>
13 #include <ngx_http.h> 13 #include <ngx_http.h>
14 14
15 15
16 /* 16 /**/
17 * The 3 bits allows the 7 uses before the cache entry allocation. 17 #define NGX_HTTP_CACHE_STALE 1
18 * We can use maximum 7 bits, i.e up to the 127 uses. 18 #define NGX_HTTP_CACHE_AGED 2
19 */ 19 #define NGX_HTTP_CACHE_THE_SAME 3
20 #define NGX_HTTP_CACHE_LAZY_ALLOCATION_BITS 3 20 /**/
21
22 #define NGX_HTTP_CACHE_KEY_LEN 16
21 23
22 24
23 typedef struct { 25 typedef struct {
24 uint32_t crc; 26 ngx_uint_t status;
25 ngx_str_t key; 27 time_t valid;
26 time_t accessed; 28 } ngx_http_cache_valid_t;
27 29
28 unsigned refs:20; /* 1048576 references */
29 30
30 unsigned count:NGX_HTTP_CACHE_LAZY_ALLOCATION_BITS; 31 /* ngx_http_file_cache_node_t takes exactly 64 bytes on FreeBSD/i386 */
31 32
32 unsigned deleted:1; 33 typedef struct {
33 unsigned expired:1; 34 ngx_rbtree_node_t node;
34 unsigned memory:1; 35 ngx_queue_t queue;
35 unsigned mmap:1;
36 unsigned notify:1;
37 36
38 ngx_fd_t fd; 37 u_char key[NGX_HTTP_CACHE_KEY_LEN
39 #if (NGX_USE_HTTP_FILE_CACHE_UNIQ) 38 - sizeof(ngx_rbtree_key_t)];
40 ngx_file_uniq_t uniq; /* no needed with kqueue */
41 #endif
42 time_t last_modified;
43 time_t updated;
44 39
45 union { 40 unsigned count:20;
46 off_t size; 41 unsigned uses:10;
47 ngx_str_t value; 42 unsigned valid_msec:10;
48 } data; 43 unsigned error:10;
49 } ngx_http_cache_entry_t; 44 /* 7 unused bits */
45 unsigned exists:1;
46
47 ngx_file_uniq_t uniq;
48 time_t expire;
49 time_t valid_sec;
50 size_t body_start;
51 } ngx_http_file_cache_node_t;
52
53
54 struct ngx_http_cache_s {
55 ngx_file_t file;
56 ngx_array_t keys;
57 uint32_t crc32;
58 u_char key[NGX_HTTP_CACHE_KEY_LEN];
59
60 ngx_file_uniq_t uniq;
61 time_t valid_sec;
62 time_t last_modified;
63 time_t date;
64
65 size_t header_start;
66 size_t body_start;
67 off_t length;
68
69 ngx_uint_t min_uses;
70 ngx_uint_t uses;
71 ngx_uint_t error;
72 ngx_uint_t valid_msec;
73
74 ngx_buf_t *buf;
75
76 ngx_http_file_cache_t *file_cache;
77 ngx_http_file_cache_node_t *node;
78
79 unsigned updated:1;
80 unsigned exists:1;
81 unsigned temp_file:1;
82 };
50 83
51 84
52 typedef struct { 85 typedef struct {
53 time_t expires; 86 time_t valid_sec;
54 time_t last_modified; 87 time_t last_modified;
55 time_t date; 88 time_t date;
56 off_t length; 89 uint32_t crc32;
57 size_t key_len; 90 u_short valid_msec;
58 char key[1]; 91 u_short header_start;
59 } ngx_http_cache_header_t; 92 u_short body_start;
93 } ngx_http_file_cache_header_t;
60 94
61 95
62 #define NGX_HTTP_CACHE_HASH 7 96 struct ngx_http_file_cache_s {
63 #define NGX_HTTP_CACHE_NELTS 4 97 ngx_rbtree_t *rbtree;
98 ngx_queue_t *queue;
99 ngx_slab_pool_t *shpool;
64 100
65 typedef struct { 101 ngx_path_t *path;
66 ngx_http_cache_entry_t *elts; 102
67 size_t hash; 103 time_t inactive;
68 size_t nelts; 104 time_t created;
69 time_t life; 105 time_t clean_time;
70 time_t update; 106 time_t next_clean_time;
71 #if (NGX_THREADS) 107
72 ngx_mutex_t mutex; 108 ngx_shm_zone_t *shm_zone;
73 #endif 109 };
74 ngx_pool_t *pool;
75 } ngx_http_cache_hash_t;
76 110
77 111
78 typedef struct { 112 void ngx_http_file_cache_create_key(ngx_http_request_t *r);
79 ngx_http_cache_hash_t *hash; 113 ngx_int_t ngx_http_file_cache_open(ngx_http_request_t *r);
80 ngx_http_cache_entry_t *cache; 114 void ngx_http_file_cache_set_header(ngx_http_request_t *r, u_char *buf);
81 ngx_file_t file; 115 void ngx_http_file_cache_update(ngx_http_request_t *r, ngx_temp_file_t *tf);
82 ngx_array_t key; 116 ngx_int_t ngx_http_cache_send(ngx_http_request_t *);
83 uint32_t crc; 117 void ngx_http_file_cache_free(ngx_http_request_t *r, ngx_temp_file_t *tf);
84 u_char md5[16]; 118 time_t ngx_http_file_cache_valid(ngx_array_t *cache_valid, ngx_uint_t status);
85 ngx_path_t *path;
86 ngx_buf_t *buf;
87 time_t expires;
88 time_t last_modified;
89 time_t date;
90 off_t length;
91 size_t key_len;
92 size_t file_start;
93 ngx_file_uniq_t uniq;
94 ngx_log_t *log;
95
96 /* STUB */
97 ssize_t header_size;
98 ngx_str_t key0;
99 } ngx_http_cache_t;
100 119
101 120
102 typedef struct { 121 char *ngx_http_file_cache_set_slot(ngx_conf_t *cf, ngx_command_t *cmd,
103 ngx_path_t *path; 122 void *conf);
104 ngx_str_t key; 123 char *ngx_http_file_cache_valid_set_slot(ngx_conf_t *cf, ngx_command_t *cmd,
105 ngx_buf_t *buf; 124 void *conf);
106
107 unsigned file:1;
108 unsigned memory:1;
109 unsigned primary:1;
110 } ngx_http_cache_ctx_t;
111
112
113 #define NGX_HTTP_CACHE_STALE 1
114 #define NGX_HTTP_CACHE_AGED 2
115 #define NGX_HTTP_CACHE_THE_SAME 3
116
117
118 ngx_int_t ngx_http_cache_get(ngx_http_request_t *r, ngx_http_cache_ctx_t *ctx);
119
120 ngx_int_t ngx_http_file_cache_get(ngx_http_request_t *r,
121 ngx_http_cache_ctx_t *ctx);
122
123 ngx_int_t ngx_http_file_cache_open(ngx_http_cache_t *c);
124
125 ngx_int_t ngx_http_cache_cleaner_handler(ngx_gc_t *gc, ngx_str_t *name,
126 ngx_dir_t *dir);
127
128
129 #if 0
130
131 ngx_http_cache_t *ngx_http_cache_get(ngx_http_cache_hash_t *cache,
132 ngx_http_cleanup_t *cleanup,
133 ngx_str_t *key, uint32_t *crc);
134
135 ngx_http_cache_t *ngx_http_cache_alloc(ngx_http_cache_hash_t *hash,
136 ngx_http_cache_t *cache,
137 ngx_http_cleanup_t *cleanup,
138 ngx_str_t *key, uint32_t crc,
139 ngx_str_t *value, ngx_log_t *log);
140 void ngx_http_cache_free(ngx_http_cache_t *cache,
141 ngx_str_t *key, ngx_str_t *value, ngx_log_t *log);
142 void ngx_http_cache_lock(ngx_http_cache_hash_t *hash, ngx_http_cache_t *cache);
143 void ngx_http_cache_unlock(ngx_http_cache_hash_t *hash,
144 ngx_http_cache_t *cache, ngx_log_t *log);
145
146 int ngx_http_cache_update_file(ngx_http_request_t *r,ngx_http_cache_ctx_t *ctx,
147 ngx_str_t *temp_file);
148
149 int ngx_http_send_cached(ngx_http_request_t *r);
150
151
152 char *ngx_http_set_cache_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
153
154 #endif
155 125
156 126
157 #endif /* _NGX_HTTP_CACHE_H_INCLUDED_ */ 127 #endif /* _NGX_HTTP_CACHE_H_INCLUDED_ */