Mercurial > hg > nginx
view src/stream/ngx_stream_variables.h @ 7670:ccb5ff87ab3e
Cache: introduced min_free cache clearing.
Clearing cache based on free space left on a file system is
expected to allow better disk utilization in some cases, notably
when disk space might be also used for something other than nginx
cache (including nginx own temporary files) and while loading
cache (when cache size might be inaccurate for a while, effectively
disabling max_size cache clearing).
Based on a patch by Adam Bambuch.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 22 Jun 2020 18:03:00 +0300 |
parents | 2a288909abc6 |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_STREAM_VARIABLES_H_INCLUDED_ #define _NGX_STREAM_VARIABLES_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_stream.h> typedef ngx_variable_value_t ngx_stream_variable_value_t; #define ngx_stream_variable(v) { sizeof(v) - 1, 1, 0, 0, 0, (u_char *) v } typedef struct ngx_stream_variable_s ngx_stream_variable_t; typedef void (*ngx_stream_set_variable_pt) (ngx_stream_session_t *s, ngx_stream_variable_value_t *v, uintptr_t data); typedef ngx_int_t (*ngx_stream_get_variable_pt) (ngx_stream_session_t *s, ngx_stream_variable_value_t *v, uintptr_t data); #define NGX_STREAM_VAR_CHANGEABLE 1 #define NGX_STREAM_VAR_NOCACHEABLE 2 #define NGX_STREAM_VAR_INDEXED 4 #define NGX_STREAM_VAR_NOHASH 8 #define NGX_STREAM_VAR_WEAK 16 #define NGX_STREAM_VAR_PREFIX 32 struct ngx_stream_variable_s { ngx_str_t name; /* must be first to build the hash */ ngx_stream_set_variable_pt set_handler; ngx_stream_get_variable_pt get_handler; uintptr_t data; ngx_uint_t flags; ngx_uint_t index; }; #define ngx_stream_null_variable { ngx_null_string, NULL, NULL, 0, 0, 0 } ngx_stream_variable_t *ngx_stream_add_variable(ngx_conf_t *cf, ngx_str_t *name, ngx_uint_t flags); ngx_int_t ngx_stream_get_variable_index(ngx_conf_t *cf, ngx_str_t *name); ngx_stream_variable_value_t *ngx_stream_get_indexed_variable( ngx_stream_session_t *s, ngx_uint_t index); ngx_stream_variable_value_t *ngx_stream_get_flushed_variable( ngx_stream_session_t *s, ngx_uint_t index); ngx_stream_variable_value_t *ngx_stream_get_variable(ngx_stream_session_t *s, ngx_str_t *name, ngx_uint_t key); #if (NGX_PCRE) typedef struct { ngx_uint_t capture; ngx_int_t index; } ngx_stream_regex_variable_t; typedef struct { ngx_regex_t *regex; ngx_uint_t ncaptures; ngx_stream_regex_variable_t *variables; ngx_uint_t nvariables; ngx_str_t name; } ngx_stream_regex_t; typedef struct { ngx_stream_regex_t *regex; void *value; } ngx_stream_map_regex_t; ngx_stream_regex_t *ngx_stream_regex_compile(ngx_conf_t *cf, ngx_regex_compile_t *rc); ngx_int_t ngx_stream_regex_exec(ngx_stream_session_t *s, ngx_stream_regex_t *re, ngx_str_t *str); #endif typedef struct { ngx_hash_combined_t hash; #if (NGX_PCRE) ngx_stream_map_regex_t *regex; ngx_uint_t nregex; #endif } ngx_stream_map_t; void *ngx_stream_map_find(ngx_stream_session_t *s, ngx_stream_map_t *map, ngx_str_t *match); ngx_int_t ngx_stream_variables_add_core_vars(ngx_conf_t *cf); ngx_int_t ngx_stream_variables_init_vars(ngx_conf_t *cf); extern ngx_stream_variable_value_t ngx_stream_variable_null_value; extern ngx_stream_variable_value_t ngx_stream_variable_true_value; #endif /* _NGX_STREAM_VARIABLES_H_INCLUDED_ */