mirror of
https://github.com/nginx/nginx.git
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b1dfe478a0
*) Feature: the server_names_hash and server_names_hash_threshold
directives.
*) Bugfix: the *.domain.tld names in the "server_name" directive did
not work.
*) Bugfix: the %request_length log parameter logged the incorrect
length.
158 lines
4.2 KiB
C
158 lines
4.2 KiB
C
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/*
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* Copyright (C) Igor Sysoev
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*/
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#ifndef _NGX_HTTP_CACHE_H_INCLUDED_
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#define _NGX_HTTP_CACHE_H_INCLUDED_
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#include <ngx_config.h>
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#include <ngx_core.h>
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#include <ngx_http.h>
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/*
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* The 3 bits allows the 7 uses before the cache entry allocation.
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* We can use maximum 7 bits, i.e up to the 127 uses.
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*/
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#define NGX_HTTP_CACHE_LAZY_ALLOCATION_BITS 3
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typedef struct {
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uint32_t crc;
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ngx_str_t key;
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time_t accessed;
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unsigned refs:20; /* 1048576 references */
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unsigned count:NGX_HTTP_CACHE_LAZY_ALLOCATION_BITS;
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unsigned deleted:1;
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unsigned expired:1;
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unsigned memory:1;
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unsigned mmap:1;
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unsigned notify:1;
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ngx_fd_t fd;
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#if (NGX_USE_HTTP_FILE_CACHE_UNIQ)
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ngx_file_uniq_t uniq; /* no needed with kqueue */
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#endif
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time_t last_modified;
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time_t updated;
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union {
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off_t size;
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ngx_str_t value;
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} data;
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} ngx_http_cache_entry_t;
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typedef struct {
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time_t expires;
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time_t last_modified;
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time_t date;
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off_t length;
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size_t key_len;
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char key[1];
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} ngx_http_cache_header_t;
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#define NGX_HTTP_CACHE_HASH 7
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#define NGX_HTTP_CACHE_NELTS 4
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typedef struct {
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ngx_http_cache_entry_t *elts;
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size_t hash;
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size_t nelts;
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time_t life;
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time_t update;
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#if (NGX_THREADS)
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ngx_mutex_t mutex;
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#endif
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ngx_pool_t *pool;
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} ngx_http_cache_hash_t;
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typedef struct {
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ngx_http_cache_hash_t *hash;
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ngx_http_cache_entry_t *cache;
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ngx_file_t file;
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ngx_array_t key;
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uint32_t crc;
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u_char md5[16];
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ngx_path_t *path;
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ngx_buf_t *buf;
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time_t expires;
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time_t last_modified;
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time_t date;
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off_t length;
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size_t key_len;
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size_t file_start;
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ngx_file_uniq_t uniq;
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ngx_log_t *log;
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/* STUB */
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ssize_t header_size;
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ngx_str_t key0;
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} ngx_http_cache_t;
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typedef struct {
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ngx_path_t *path;
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ngx_str_t key;
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ngx_buf_t *buf;
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unsigned file:1;
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unsigned memory:1;
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unsigned primary:1;
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} ngx_http_cache_ctx_t;
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#define NGX_HTTP_CACHE_STALE 1
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#define NGX_HTTP_CACHE_AGED 2
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#define NGX_HTTP_CACHE_THE_SAME 3
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ngx_int_t ngx_http_cache_get(ngx_http_request_t *r, ngx_http_cache_ctx_t *ctx);
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ngx_int_t ngx_http_file_cache_get(ngx_http_request_t *r,
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ngx_http_cache_ctx_t *ctx);
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ngx_int_t ngx_http_file_cache_open(ngx_http_cache_t *c);
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ngx_int_t ngx_http_cache_cleaner_handler(ngx_gc_t *gc, ngx_str_t *name,
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ngx_dir_t *dir);
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#if 0
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ngx_http_cache_t *ngx_http_cache_get(ngx_http_cache_hash_t *cache,
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ngx_http_cleanup_t *cleanup,
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ngx_str_t *key, uint32_t *crc);
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ngx_http_cache_t *ngx_http_cache_alloc(ngx_http_cache_hash_t *hash,
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ngx_http_cache_t *cache,
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ngx_http_cleanup_t *cleanup,
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ngx_str_t *key, uint32_t crc,
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ngx_str_t *value, ngx_log_t *log);
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void ngx_http_cache_free(ngx_http_cache_t *cache,
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ngx_str_t *key, ngx_str_t *value, ngx_log_t *log);
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void ngx_http_cache_lock(ngx_http_cache_hash_t *hash, ngx_http_cache_t *cache);
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void ngx_http_cache_unlock(ngx_http_cache_hash_t *hash,
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ngx_http_cache_t *cache, ngx_log_t *log);
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int ngx_http_cache_update_file(ngx_http_request_t *r,ngx_http_cache_ctx_t *ctx,
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ngx_str_t *temp_file);
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int ngx_http_send_cached(ngx_http_request_t *r);
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char *ngx_http_set_cache_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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#endif
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#endif /* _NGX_HTTP_CACHE_H_INCLUDED_ */
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