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src/http/ngx_http_cache.h - nginx-1.7.10
Data types defined
Macros defined
Source code
- #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_BYPASS 2
- #define NGX_HTTP_CACHE_EXPIRED 3
- #define NGX_HTTP_CACHE_STALE 4
- #define NGX_HTTP_CACHE_UPDATING 5
- #define NGX_HTTP_CACHE_REVALIDATED 6
- #define NGX_HTTP_CACHE_HIT 7
- #define NGX_HTTP_CACHE_SCARCE 8
- #define NGX_HTTP_CACHE_KEY_LEN 16
- #define NGX_HTTP_CACHE_ETAG_LEN 42
- #define NGX_HTTP_CACHE_VARY_LEN 42
- #define NGX_HTTP_CACHE_VERSION 3
- 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;
- unsigned deleting:1;
-
- ngx_file_uniq_t uniq;
- time_t expire;
- time_t valid_sec;
- size_t body_start;
- off_t fs_size;
- ngx_msec_t lock_time;
- } 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];
- u_char main[NGX_HTTP_CACHE_KEY_LEN];
- ngx_file_uniq_t uniq;
- time_t valid_sec;
- time_t last_modified;
- time_t date;
- ngx_str_t etag;
- ngx_str_t vary;
- u_char variant[NGX_HTTP_CACHE_KEY_LEN];
- size_t header_start;
- size_t body_start;
- off_t length;
- off_t fs_size;
- 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;
- ngx_msec_t lock_timeout;
- ngx_msec_t lock_age;
- ngx_msec_t lock_time;
- ngx_msec_t wait_time;
- ngx_event_t wait_event;
- unsigned lock:1;
- unsigned waiting:1;
- unsigned updated:1;
- unsigned updating:1;
- unsigned exists:1;
- unsigned temp_file:1;
- unsigned reading:1;
- unsigned secondary:1;
- };
- typedef struct {
- ngx_uint_t version;
- 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;
- u_char etag_len;
- u_char etag[NGX_HTTP_CACHE_ETAG_LEN];
- u_char vary_len;
- u_char vary[NGX_HTTP_CACHE_VARY_LEN];
- u_char variant[NGX_HTTP_CACHE_KEY_LEN];
- } 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;
- ngx_path_t *temp_path;
- off_t max_size;
- size_t bsize;
- time_t inactive;
- ngx_uint_t files;
- ngx_uint_t loader_files;
- ngx_msec_t last;
- ngx_msec_t loader_sleep;
- ngx_msec_t loader_threshold;
- ngx_shm_zone_t *shm_zone;
- };
- ngx_int_t ngx_http_file_cache_new(ngx_http_request_t *r);
- ngx_int_t ngx_http_file_cache_create(ngx_http_request_t *r);
- 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);
- ngx_int_t 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);
- void ngx_http_file_cache_update_header(ngx_http_request_t *r);
- ngx_int_t ngx_http_cache_send(ngx_http_request_t *);
- void ngx_http_file_cache_free(ngx_http_cache_t *c, 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
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