Mercurial > hg > nginx
view src/stream/ngx_stream.h @ 6679:40e8ce405859
Stream: postpone session initialization under accept mutex.
Previously, it was possible that some system calls could be
invoked while holding the accept mutex. This is clearly
wrong as it prevents incoming connections from being accepted
as quickly as possible.
author | Dmitry Volyntsev <xeioex@nginx.com> |
---|---|
date | Tue, 06 Sep 2016 21:28:13 +0300 |
parents | 0125b151c9a5 |
children | 7357abd1fa8c |
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/* * Copyright (C) Roman Arutyunyan * Copyright (C) Nginx, Inc. */ #ifndef _NGX_STREAM_H_INCLUDED_ #define _NGX_STREAM_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #if (NGX_STREAM_SSL) #include <ngx_stream_ssl_module.h> #endif typedef struct ngx_stream_session_s ngx_stream_session_t; #include <ngx_stream_variables.h> #include <ngx_stream_script.h> #include <ngx_stream_upstream.h> #include <ngx_stream_upstream_round_robin.h> #define NGX_STREAM_OK 200 #define NGX_STREAM_FORBIDDEN 403 #define NGX_STREAM_INTERNAL_SERVER_ERROR 500 #define NGX_STREAM_BAD_GATEWAY 502 #define NGX_STREAM_SERVICE_UNAVAILABLE 503 typedef struct { void **main_conf; void **srv_conf; } ngx_stream_conf_ctx_t; typedef struct { ngx_sockaddr_t sockaddr; socklen_t socklen; /* server ctx */ ngx_stream_conf_ctx_t *ctx; unsigned bind:1; unsigned wildcard:1; #if (NGX_STREAM_SSL) unsigned ssl:1; #endif #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY) unsigned ipv6only:1; #endif #if (NGX_HAVE_REUSEPORT) unsigned reuseport:1; #endif unsigned so_keepalive:2; #if (NGX_HAVE_KEEPALIVE_TUNABLE) int tcp_keepidle; int tcp_keepintvl; int tcp_keepcnt; #endif int backlog; int type; } ngx_stream_listen_t; typedef struct { ngx_stream_conf_ctx_t *ctx; ngx_str_t addr_text; #if (NGX_STREAM_SSL) ngx_uint_t ssl; /* unsigned ssl:1; */ #endif } ngx_stream_addr_conf_t; typedef struct { in_addr_t addr; ngx_stream_addr_conf_t conf; } ngx_stream_in_addr_t; #if (NGX_HAVE_INET6) typedef struct { struct in6_addr addr6; ngx_stream_addr_conf_t conf; } ngx_stream_in6_addr_t; #endif typedef struct { /* ngx_stream_in_addr_t or ngx_stream_in6_addr_t */ void *addrs; ngx_uint_t naddrs; } ngx_stream_port_t; typedef struct { int family; int type; in_port_t port; ngx_array_t addrs; /* array of ngx_stream_conf_addr_t */ } ngx_stream_conf_port_t; typedef struct { ngx_stream_listen_t opt; } ngx_stream_conf_addr_t; typedef ngx_int_t (*ngx_stream_access_pt)(ngx_stream_session_t *s); typedef struct { ngx_array_t servers; /* ngx_stream_core_srv_conf_t */ ngx_array_t listen; /* ngx_stream_listen_t */ ngx_stream_access_pt limit_conn_handler; ngx_stream_access_pt access_handler; ngx_stream_access_pt access_log_handler; ngx_hash_t variables_hash; ngx_array_t variables; /* ngx_stream_variable_t */ ngx_uint_t ncaptures; ngx_uint_t variables_hash_max_size; ngx_uint_t variables_hash_bucket_size; ngx_hash_keys_arrays_t *variables_keys; } ngx_stream_core_main_conf_t; typedef void (*ngx_stream_handler_pt)(ngx_stream_session_t *s); typedef struct { ngx_stream_handler_pt handler; ngx_stream_conf_ctx_t *ctx; u_char *file_name; ngx_uint_t line; ngx_flag_t tcp_nodelay; ngx_log_t *error_log; ngx_msec_t resolver_timeout; ngx_resolver_t *resolver; ngx_uint_t listen; /* unsigned listen:1; */ } ngx_stream_core_srv_conf_t; struct ngx_stream_session_s { uint32_t signature; /* "STRM" */ ngx_connection_t *connection; off_t received; time_t start_sec; ngx_msec_t start_msec; ngx_log_handler_pt log_handler; void **ctx; void **main_conf; void **srv_conf; ngx_stream_upstream_t *upstream; ngx_array_t *upstream_states; /* of ngx_stream_upstream_state_t */ ngx_stream_variable_value_t *variables; #if (NGX_PCRE) ngx_uint_t ncaptures; int *captures; u_char *captures_data; #endif ngx_uint_t status; #if (NGX_STREAM_SSL) ngx_uint_t ssl; /* unsigned ssl:1; */ #endif }; typedef struct { ngx_int_t (*preconfiguration)(ngx_conf_t *cf); ngx_int_t (*postconfiguration)(ngx_conf_t *cf); void *(*create_main_conf)(ngx_conf_t *cf); char *(*init_main_conf)(ngx_conf_t *cf, void *conf); void *(*create_srv_conf)(ngx_conf_t *cf); char *(*merge_srv_conf)(ngx_conf_t *cf, void *prev, void *conf); } ngx_stream_module_t; #define NGX_STREAM_MODULE 0x4d525453 /* "STRM" */ #define NGX_STREAM_MAIN_CONF 0x02000000 #define NGX_STREAM_SRV_CONF 0x04000000 #define NGX_STREAM_UPS_CONF 0x08000000 #define NGX_STREAM_MAIN_CONF_OFFSET offsetof(ngx_stream_conf_ctx_t, main_conf) #define NGX_STREAM_SRV_CONF_OFFSET offsetof(ngx_stream_conf_ctx_t, srv_conf) #define ngx_stream_get_module_ctx(s, module) (s)->ctx[module.ctx_index] #define ngx_stream_set_ctx(s, c, module) s->ctx[module.ctx_index] = c; #define ngx_stream_delete_ctx(s, module) s->ctx[module.ctx_index] = NULL; #define ngx_stream_get_module_main_conf(s, module) \ (s)->main_conf[module.ctx_index] #define ngx_stream_get_module_srv_conf(s, module) \ (s)->srv_conf[module.ctx_index] #define ngx_stream_conf_get_module_main_conf(cf, module) \ ((ngx_stream_conf_ctx_t *) cf->ctx)->main_conf[module.ctx_index] #define ngx_stream_conf_get_module_srv_conf(cf, module) \ ((ngx_stream_conf_ctx_t *) cf->ctx)->srv_conf[module.ctx_index] #define ngx_stream_cycle_get_module_main_conf(cycle, module) \ (cycle->conf_ctx[ngx_stream_module.index] ? \ ((ngx_stream_conf_ctx_t *) cycle->conf_ctx[ngx_stream_module.index]) \ ->main_conf[module.ctx_index]: \ NULL) void ngx_stream_init_connection(ngx_connection_t *c); void ngx_stream_finalize_session(ngx_stream_session_t *s, ngx_uint_t rc); extern ngx_module_t ngx_stream_module; extern ngx_uint_t ngx_stream_max_module; extern ngx_module_t ngx_stream_core_module; #endif /* _NGX_STREAM_H_INCLUDED_ */