mirror of
https://github.com/nginx/nginx.git
synced 2024-12-17 06:57:47 +08:00
141 lines
4.2 KiB
C
141 lines
4.2 KiB
C
|
|
/*
|
|
* 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_SCARCE 6
|
|
|
|
#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_ */
|