Mercurial > hg > nginx
view src/event/ngx_event_connect.h @ 4618:c05cfc46b3bc
Accept moderation in case of EMFILE/ENFILE.
In case of EMFILE/ENFILE returned from accept() we disable accept events,
and (in case of no accept mutex used) arm timer to re-enable them later.
With accept mutex we just drop it, and rely on normal accept mutex handling
to re-enable accept events once it's acquired again.
As we now handle errors in question, logging level was changed to "crit"
(instead of "alert" used for unknown errors).
Note: the code might call ngx_enable_accept_events() multiple times if
there are many listen sockets. The ngx_enable_accept_events() function was
modified to check if connection is already active (via c->read->active) and
skip it then, thus making multiple calls safe.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Fri, 11 May 2012 13:33:06 +0000 |
parents | d620f497c50f |
children | d09b689911ac |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_EVENT_CONNECT_H_INCLUDED_ #define _NGX_EVENT_CONNECT_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> #define NGX_PEER_KEEPALIVE 1 #define NGX_PEER_NEXT 2 #define NGX_PEER_FAILED 4 typedef struct ngx_peer_connection_s ngx_peer_connection_t; typedef ngx_int_t (*ngx_event_get_peer_pt)(ngx_peer_connection_t *pc, void *data); typedef void (*ngx_event_free_peer_pt)(ngx_peer_connection_t *pc, void *data, ngx_uint_t state); #if (NGX_SSL) typedef ngx_int_t (*ngx_event_set_peer_session_pt)(ngx_peer_connection_t *pc, void *data); typedef void (*ngx_event_save_peer_session_pt)(ngx_peer_connection_t *pc, void *data); #endif struct ngx_peer_connection_s { ngx_connection_t *connection; struct sockaddr *sockaddr; socklen_t socklen; ngx_str_t *name; ngx_uint_t tries; ngx_event_get_peer_pt get; ngx_event_free_peer_pt free; void *data; #if (NGX_SSL) ngx_event_set_peer_session_pt set_session; ngx_event_save_peer_session_pt save_session; #endif #if (NGX_THREADS) ngx_atomic_t *lock; #endif ngx_addr_t *local; int rcvbuf; ngx_log_t *log; unsigned cached:1; /* ngx_connection_log_error_e */ unsigned log_error:2; }; ngx_int_t ngx_event_connect_peer(ngx_peer_connection_t *pc); ngx_int_t ngx_event_get_peer(ngx_peer_connection_t *pc, void *data); #endif /* _NGX_EVENT_CONNECT_H_INCLUDED_ */