Mercurial > hg > nginx-quic
view src/http/ngx_http_cache.h @ 236:86e473b5641e
nginx-0.0.1-2004-01-22-09:47:28 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Thu, 22 Jan 2004 06:47:28 +0000 |
parents | c9da5900c79e |
children | 5238e93961a1 |
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#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 7 uses before an 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_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_t *elts; size_t hash; size_t nelts; time_t life; time_t update; ngx_pool_t *pool; } ngx_http_cache_hash_t; typedef struct { ngx_http_cache_hash_t *hash; ngx_http_cache_t *cache; ngx_file_t file; ngx_str_t key; uint32_t crc; u_char md5[16]; ngx_path_t *path; ngx_hunk_t *buf; time_t expires; time_t last_modified; time_t date; off_t length; ssize_t header_size; size_t file_start; ngx_log_t *log; } 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_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_get_file(ngx_http_request_t *r, ngx_http_cache_ctx_t *ctx); int ngx_http_cache_open_file(ngx_http_cache_ctx_t *ctx, ngx_file_uniq_t uniq); 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); int ngx_garbage_collector_http_cache_handler(ngx_gc_t *gc, ngx_str_t *name, ngx_dir_t *dir); char *ngx_http_set_cache_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); #endif /* _NGX_HTTP_CACHE_H_INCLUDED_ */