blob: 6ac6fd8768db91de9889641725d7fcfe2be08718 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/*
* Copyright (C) Igor Sysoev
*/
#ifndef _NGX_HTTP_CACHE_H_INCLUDED_
#define _NGX_HTTP_CACHE_H_INCLUDED_
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
#define NGX_HTTP_CACHE_MISS 1
#define NGX_HTTP_CACHE_EXPIRED 2
#define NGX_HTTP_CACHE_STALE 3
#define NGX_HTTP_CACHE_UPDATING 4
#define NGX_HTTP_CACHE_HIT 5
#define NGX_HTTP_CACHE_KEY_LEN 16
typedef struct {
ngx_uint_t status;
time_t valid;
} ngx_http_cache_valid_t;
typedef struct {
ngx_rbtree_node_t node;
ngx_queue_t queue;
u_char key[NGX_HTTP_CACHE_KEY_LEN
- sizeof(ngx_rbtree_key_t)];
unsigned count:20;
unsigned uses:10;
unsigned valid_msec:10;
unsigned error:10;
unsigned exists:1;
unsigned updating:1;
/* 12 unused bits */
ngx_file_uniq_t uniq;
time_t expire;
time_t valid_sec;
size_t body_start;
off_t length;
} ngx_http_file_cache_node_t;
struct ngx_http_cache_s {
ngx_file_t file;
ngx_array_t keys;
uint32_t crc32;
u_char key[NGX_HTTP_CACHE_KEY_LEN];
ngx_file_uniq_t uniq;
time_t valid_sec;
time_t last_modified;
time_t date;
size_t header_start;
size_t body_start;
off_t length;
ngx_uint_t min_uses;
ngx_uint_t error;
ngx_uint_t valid_msec;
ngx_buf_t *buf;
ngx_http_file_cache_t *file_cache;
ngx_http_file_cache_node_t *node;
unsigned updated:1;
unsigned exists:1;
unsigned temp_file:1;
};
typedef struct {
time_t valid_sec;
time_t last_modified;
time_t date;
uint32_t crc32;
u_short valid_msec;
u_short header_start;
u_short body_start;
} ngx_http_file_cache_header_t;
typedef struct {
ngx_rbtree_t rbtree;
ngx_rbtree_node_t sentinel;
ngx_queue_t queue;
ngx_atomic_t cold;
ngx_atomic_t loading;
off_t size;
} ngx_http_file_cache_sh_t;
struct ngx_http_file_cache_s {
ngx_http_file_cache_sh_t *sh;
ngx_slab_pool_t *shpool;
ngx_path_t *path;
off_t max_size;
size_t bsize;
time_t inactive;
ngx_msec_t last;
ngx_uint_t files;
ngx_shm_zone_t *shm_zone;
};
void ngx_http_file_cache_create_key(ngx_http_request_t *r);
ngx_int_t ngx_http_file_cache_open(ngx_http_request_t *r);
void ngx_http_file_cache_set_header(ngx_http_request_t *r, u_char *buf);
void ngx_http_file_cache_update(ngx_http_request_t *r, ngx_temp_file_t *tf);
ngx_int_t ngx_http_cache_send(ngx_http_request_t *);
void ngx_http_file_cache_free(ngx_http_request_t *r, ngx_temp_file_t *tf);
time_t ngx_http_file_cache_valid(ngx_array_t *cache_valid, ngx_uint_t status);
char *ngx_http_file_cache_set_slot(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
char *ngx_http_file_cache_valid_set_slot(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
extern ngx_str_t ngx_http_cache_status[];
#endif /* _NGX_HTTP_CACHE_H_INCLUDED_ */
|