0
|
1
|
|
2 /*
|
|
3 * Copyright (C) Igor Sysoev
|
|
4 */
|
|
5
|
|
6
|
|
7 #ifndef _NGX_HTTP_CACHE_H_INCLUDED_
|
|
8 #define _NGX_HTTP_CACHE_H_INCLUDED_
|
|
9
|
|
10
|
|
11 #include <ngx_config.h>
|
|
12 #include <ngx_core.h>
|
|
13 #include <ngx_http.h>
|
|
14
|
|
15
|
502
|
16 #define NGX_HTTP_CACHE_MISS 1
|
|
17 #define NGX_HTTP_CACHE_EXPIRED 2
|
|
18 #define NGX_HTTP_CACHE_STALE 3
|
|
19 #define NGX_HTTP_CACHE_UPDATING 4
|
|
20 #define NGX_HTTP_CACHE_HIT 5
|
0
|
21
|
464
|
22 #define NGX_HTTP_CACHE_KEY_LEN 16
|
0
|
23
|
|
24
|
|
25 typedef struct {
|
464
|
26 ngx_uint_t status;
|
|
27 time_t valid;
|
|
28 } ngx_http_cache_valid_t;
|
|
29
|
|
30
|
|
31 typedef struct {
|
|
32 ngx_rbtree_node_t node;
|
|
33 ngx_queue_t queue;
|
|
34
|
|
35 u_char key[NGX_HTTP_CACHE_KEY_LEN
|
|
36 - sizeof(ngx_rbtree_key_t)];
|
|
37
|
|
38 unsigned count:20;
|
|
39 unsigned uses:10;
|
|
40 unsigned valid_msec:10;
|
|
41 unsigned error:10;
|
|
42 unsigned exists:1;
|
498
|
43 unsigned updating:1;
|
|
44 /* 12 unused bits */
|
464
|
45
|
|
46 ngx_file_uniq_t uniq;
|
|
47 time_t expire;
|
|
48 time_t valid_sec;
|
|
49 size_t body_start;
|
468
|
50 off_t length;
|
464
|
51 } ngx_http_file_cache_node_t;
|
|
52
|
18
|
53
|
464
|
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 error;
|
|
71 ngx_uint_t valid_msec;
|
|
72
|
|
73 ngx_buf_t *buf;
|
|
74
|
|
75 ngx_http_file_cache_t *file_cache;
|
|
76 ngx_http_file_cache_node_t *node;
|
|
77
|
|
78 unsigned updated:1;
|
|
79 unsigned exists:1;
|
|
80 unsigned temp_file:1;
|
|
81 };
|
0
|
82
|
|
83
|
22
|
84 typedef struct {
|
464
|
85 time_t valid_sec;
|
|
86 time_t last_modified;
|
|
87 time_t date;
|
|
88 uint32_t crc32;
|
|
89 u_short valid_msec;
|
|
90 u_short header_start;
|
|
91 u_short body_start;
|
|
92 } ngx_http_file_cache_header_t;
|
26
|
93
|
|
94
|
480
|
95 typedef struct {
|
|
96 ngx_rbtree_t rbtree;
|
|
97 ngx_rbtree_node_t sentinel;
|
|
98 ngx_queue_t queue;
|
|
99 ngx_atomic_t cold;
|
|
100 off_t size;
|
|
101 } ngx_http_file_cache_sh_t;
|
|
102
|
|
103
|
464
|
104 struct ngx_http_file_cache_s {
|
480
|
105 ngx_http_file_cache_sh_t *sh;
|
464
|
106 ngx_slab_pool_t *shpool;
|
18
|
107
|
464
|
108 ngx_path_t *path;
|
0
|
109
|
468
|
110 off_t max_size;
|
|
111 size_t bsize;
|
|
112
|
464
|
113 time_t inactive;
|
468
|
114
|
|
115 ngx_msec_t last;
|
|
116 ngx_uint_t files;
|
0
|
117
|
464
|
118 ngx_shm_zone_t *shm_zone;
|
|
119 };
|
0
|
120
|
|
121
|
464
|
122 void ngx_http_file_cache_create_key(ngx_http_request_t *r);
|
|
123 ngx_int_t ngx_http_file_cache_open(ngx_http_request_t *r);
|
|
124 void ngx_http_file_cache_set_header(ngx_http_request_t *r, u_char *buf);
|
|
125 void ngx_http_file_cache_update(ngx_http_request_t *r, ngx_temp_file_t *tf);
|
|
126 ngx_int_t ngx_http_cache_send(ngx_http_request_t *);
|
|
127 void ngx_http_file_cache_free(ngx_http_request_t *r, ngx_temp_file_t *tf);
|
|
128 time_t ngx_http_file_cache_valid(ngx_array_t *cache_valid, ngx_uint_t status);
|
0
|
129
|
464
|
130 char *ngx_http_file_cache_set_slot(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
131 void *conf);
|
|
132 char *ngx_http_file_cache_valid_set_slot(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
133 void *conf);
|
18
|
134
|
502
|
135 extern ngx_str_t ngx_http_cache_status[];
|
|
136
|
0
|
137
|
|
138 #endif /* _NGX_HTTP_CACHE_H_INCLUDED_ */
|