Mercurial > hg > nginx-quic
view src/http/ngx_http_cache.h @ 2235:03180d4e5af2
ngx_http_random_index_module
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Fri, 05 Sep 2008 15:45:55 +0000 |
parents | ad1e9ebf93bb |
children | 3a8a53c0c42f |
line wrap: on
line source
/* * 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> /* * The 3 bits allows the 7 uses before the cache entry allocation. * We can use maximum 7 bits, i.e up to the 127 uses. */ #define NGX_HTTP_CACHE_LAZY_ALLOCATION_BITS 3 typedef struct { uint32_t crc; ngx_str_t key; time_t accessed; unsigned refs:20; /* 1048576 references */ unsigned count:NGX_HTTP_CACHE_LAZY_ALLOCATION_BITS; unsigned deleted:1; unsigned expired:1; unsigned memory:1; unsigned mmap:1; unsigned notify:1; ngx_fd_t fd; #if (NGX_USE_HTTP_FILE_CACHE_UNIQ) ngx_file_uniq_t uniq; /* no needed with kqueue */ #endif time_t last_modified; time_t updated; union { off_t size; ngx_str_t value; } data; } ngx_http_cache_entry_t; typedef struct { time_t expires; time_t last_modified; time_t date; off_t length; size_t key_len; char key[1]; } ngx_http_cache_header_t; #define NGX_HTTP_CACHE_HASH 7 #define NGX_HTTP_CACHE_NELTS 4 typedef struct { ngx_http_cache_entry_t *elts; size_t hash; size_t nelts; time_t life; time_t update; #if (NGX_THREADS) ngx_mutex_t mutex; #endif ngx_pool_t *pool; } ngx_http_cache_hash_t; typedef struct { ngx_http_cache_hash_t *hash; ngx_http_cache_entry_t *cache; ngx_file_t file; ngx_array_t key; uint32_t crc; u_char md5[16]; ngx_path_t *path; ngx_buf_t *buf; time_t expires; time_t last_modified; time_t date; off_t length; size_t key_len; size_t file_start; ngx_file_uniq_t uniq; ngx_log_t *log; /* STUB */ ssize_t header_size; ngx_str_t key0; } ngx_http_cache_t; typedef struct { ngx_path_t *path; ngx_str_t key; ngx_buf_t *buf; unsigned file:1; unsigned memory:1; unsigned primary:1; } ngx_http_cache_ctx_t; #define NGX_HTTP_CACHE_STALE 1 #define NGX_HTTP_CACHE_AGED 2 #define NGX_HTTP_CACHE_THE_SAME 3 ngx_int_t ngx_http_cache_get(ngx_http_request_t *r, ngx_http_cache_ctx_t *ctx); ngx_int_t ngx_http_file_cache_get(ngx_http_request_t *r, ngx_http_cache_ctx_t *ctx); ngx_int_t ngx_http_file_cache_open(ngx_http_cache_t *c); ngx_int_t ngx_http_cache_cleaner_handler(ngx_gc_t *gc, ngx_str_t *name, ngx_dir_t *dir); #if 0 ngx_http_cache_t *ngx_http_cache_get(ngx_http_cache_hash_t *cache, ngx_http_cleanup_t *cleanup, ngx_str_t *key, uint32_t *crc); ngx_http_cache_t *ngx_http_cache_alloc(ngx_http_cache_hash_t *hash, ngx_http_cache_t *cache, ngx_http_cleanup_t *cleanup, ngx_str_t *key, uint32_t crc, ngx_str_t *value, ngx_log_t *log); void ngx_http_cache_free(ngx_http_cache_t *cache, ngx_str_t *key, ngx_str_t *value, ngx_log_t *log); void ngx_http_cache_lock(ngx_http_cache_hash_t *hash, ngx_http_cache_t *cache); void ngx_http_cache_unlock(ngx_http_cache_hash_t *hash, ngx_http_cache_t *cache, ngx_log_t *log); int ngx_http_cache_update_file(ngx_http_request_t *r,ngx_http_cache_ctx_t *ctx, ngx_str_t *temp_file); int ngx_http_send_cached(ngx_http_request_t *r); char *ngx_http_set_cache_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); #endif #endif /* _NGX_HTTP_CACHE_H_INCLUDED_ */