/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_EVENT_H_INCLUDED_ #define _NGX_EVENT_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #define NGX_INVALID_INDEX … #if (NGX_HAVE_IOCP) typedef struct { WSAOVERLAPPED ovlp; ngx_event_t *event; int error; } ngx_event_ovlp_t; #endif struct ngx_event_s { … }; #if (NGX_HAVE_FILE_AIO) struct ngx_event_aio_s { void *data; ngx_event_handler_pt handler; ngx_file_t *file; ngx_fd_t fd; #if (NGX_HAVE_EVENTFD) int64_t res; #endif #if !(NGX_HAVE_EVENTFD) || (NGX_TEST_BUILD_EPOLL) ngx_err_t err; size_t nbytes; #endif ngx_aiocb_t aiocb; ngx_event_t event; }; #endif ngx_event_actions_t; extern ngx_event_actions_t ngx_event_actions; #if (NGX_HAVE_EPOLLRDHUP) extern ngx_uint_t ngx_use_epoll_rdhup; #endif /* * The event filter requires to read/write the whole data: * select, poll, /dev/poll, kqueue, epoll. */ #define NGX_USE_LEVEL_EVENT … /* * The event filter is deleted after a notification without an additional * syscall: kqueue, epoll. */ #define NGX_USE_ONESHOT_EVENT … /* * The event filter notifies only the changes and an initial level: * kqueue, epoll. */ #define NGX_USE_CLEAR_EVENT … /* * The event filter has kqueue features: the eof flag, errno, * available data, etc. */ #define NGX_USE_KQUEUE_EVENT … /* * The event filter supports low water mark: kqueue's NOTE_LOWAT. * kqueue in FreeBSD 4.1-4.2 has no NOTE_LOWAT so we need a separate flag. */ #define NGX_USE_LOWAT_EVENT … /* * The event filter requires to do i/o operation until EAGAIN: epoll. */ #define NGX_USE_GREEDY_EVENT … /* * The event filter is epoll. */ #define NGX_USE_EPOLL_EVENT … /* * Obsolete. */ #define NGX_USE_RTSIG_EVENT … /* * Obsolete. */ #define NGX_USE_AIO_EVENT … /* * Need to add socket or handle only once: i/o completion port. */ #define NGX_USE_IOCP_EVENT … /* * The event filter has no opaque data and requires file descriptors table: * poll, /dev/poll. */ #define NGX_USE_FD_EVENT … /* * The event module handles periodic or absolute timer event by itself: * kqueue in FreeBSD 4.4, NetBSD 2.0, and MacOSX 10.4, Solaris 10's event ports. */ #define NGX_USE_TIMER_EVENT … /* * All event filters on file descriptor are deleted after a notification: * Solaris 10's event ports. */ #define NGX_USE_EVENTPORT_EVENT … /* * The event filter support vnode notifications: kqueue. */ #define NGX_USE_VNODE_EVENT … /* * The event filter is deleted just before the closing file. * Has no meaning for select and poll. * kqueue, epoll, eventport: allows to avoid explicit delete, * because filter automatically is deleted * on file close, * * /dev/poll: we need to flush POLLREMOVE event * before closing file. */ #define NGX_CLOSE_EVENT … /* * disable temporarily event filter, this may avoid locks * in kernel malloc()/free(): kqueue. */ #define NGX_DISABLE_EVENT … /* * event must be passed to kernel right now, do not wait until batch processing. */ #define NGX_FLUSH_EVENT … /* these flags have a meaning only for kqueue */ #define NGX_LOWAT_EVENT … #define NGX_VNODE_EVENT … #if (NGX_HAVE_EPOLL) && !(NGX_HAVE_EPOLLRDHUP) #define EPOLLRDHUP … #endif #if (NGX_HAVE_KQUEUE) #define NGX_READ_EVENT … #define NGX_WRITE_EVENT … #undef NGX_VNODE_EVENT #define NGX_VNODE_EVENT … /* * NGX_CLOSE_EVENT, NGX_LOWAT_EVENT, and NGX_FLUSH_EVENT are the module flags * and they must not go into a kernel so we need to choose the value * that must not interfere with any existent and future kqueue flags. * kqueue has such values - EV_FLAG1, EV_EOF, and EV_ERROR: * they are reserved and cleared on a kernel entrance. */ #undef NGX_CLOSE_EVENT #define NGX_CLOSE_EVENT … #undef NGX_LOWAT_EVENT #define NGX_LOWAT_EVENT … #undef NGX_FLUSH_EVENT #define NGX_FLUSH_EVENT … #define NGX_LEVEL_EVENT … #define NGX_ONESHOT_EVENT … #define NGX_CLEAR_EVENT … #undef NGX_DISABLE_EVENT #define NGX_DISABLE_EVENT … #elif (NGX_HAVE_DEVPOLL && !(NGX_TEST_BUILD_DEVPOLL)) \ || (NGX_HAVE_EVENTPORT && !(NGX_TEST_BUILD_EVENTPORT)) #define NGX_READ_EVENT … #define NGX_WRITE_EVENT … #define NGX_LEVEL_EVENT … #define NGX_ONESHOT_EVENT … #elif (NGX_HAVE_EPOLL) && !(NGX_TEST_BUILD_EPOLL) #define NGX_READ_EVENT … #define NGX_WRITE_EVENT … #define NGX_LEVEL_EVENT … #define NGX_CLEAR_EVENT … #define NGX_ONESHOT_EVENT … #if 0 #define NGX_ONESHOT_EVENT … #endif #if (NGX_HAVE_EPOLLEXCLUSIVE) #define NGX_EXCLUSIVE_EVENT … #endif #elif (NGX_HAVE_POLL) #define NGX_READ_EVENT … #define NGX_WRITE_EVENT … #define NGX_LEVEL_EVENT … #define NGX_ONESHOT_EVENT … #else /* select */ #define NGX_READ_EVENT … #define NGX_WRITE_EVENT … #define NGX_LEVEL_EVENT … #define NGX_ONESHOT_EVENT … #endif /* NGX_HAVE_KQUEUE */ #if (NGX_HAVE_IOCP) #define NGX_IOCP_ACCEPT … #define NGX_IOCP_IO … #define NGX_IOCP_CONNECT … #endif #if (NGX_TEST_BUILD_EPOLL) #define NGX_EXCLUSIVE_EVENT … #endif #ifndef NGX_CLEAR_EVENT #define NGX_CLEAR_EVENT … #endif #define ngx_process_events … #define ngx_done_events … #define ngx_add_event … #define ngx_del_event … #define ngx_add_conn … #define ngx_del_conn … #define ngx_notify … #define ngx_add_timer … #define ngx_del_timer … extern ngx_os_io_t ngx_io; #define ngx_recv … #define ngx_recv_chain … #define ngx_udp_recv … #define ngx_send … #define ngx_send_chain … #define ngx_udp_send … #define ngx_udp_send_chain … #define NGX_EVENT_MODULE … #define NGX_EVENT_CONF … ngx_event_conf_t; ngx_event_module_t; extern ngx_atomic_t *ngx_connection_counter; extern ngx_atomic_t *ngx_accept_mutex_ptr; extern ngx_shmtx_t ngx_accept_mutex; extern ngx_uint_t ngx_use_accept_mutex; extern ngx_uint_t ngx_accept_events; extern ngx_uint_t ngx_accept_mutex_held; extern ngx_msec_t ngx_accept_mutex_delay; extern ngx_int_t ngx_accept_disabled; extern ngx_uint_t ngx_use_exclusive_accept; #if (NGX_STAT_STUB) extern ngx_atomic_t *ngx_stat_accepted; extern ngx_atomic_t *ngx_stat_handled; extern ngx_atomic_t *ngx_stat_requests; extern ngx_atomic_t *ngx_stat_active; extern ngx_atomic_t *ngx_stat_reading; extern ngx_atomic_t *ngx_stat_writing; extern ngx_atomic_t *ngx_stat_waiting; #endif #define NGX_UPDATE_TIME … #define NGX_POST_EVENTS … extern sig_atomic_t ngx_event_timer_alarm; extern ngx_uint_t ngx_event_flags; extern ngx_module_t ngx_events_module; extern ngx_module_t ngx_event_core_module; #define ngx_event_get_conf(conf_ctx, module) … void ngx_event_accept(ngx_event_t *ev); ngx_int_t ngx_trylock_accept_mutex(ngx_cycle_t *cycle); ngx_int_t ngx_enable_accept_events(ngx_cycle_t *cycle); u_char *ngx_accept_log_error(ngx_log_t *log, u_char *buf, size_t len); #if (NGX_DEBUG) void ngx_debug_accepted_connection(ngx_event_conf_t *ecf, ngx_connection_t *c); #endif void ngx_process_events_and_timers(ngx_cycle_t *cycle); ngx_int_t ngx_handle_read_event(ngx_event_t *rev, ngx_uint_t flags); ngx_int_t ngx_handle_write_event(ngx_event_t *wev, size_t lowat); #if (NGX_WIN32) void ngx_event_acceptex(ngx_event_t *ev); ngx_int_t ngx_event_post_acceptex(ngx_listening_t *ls, ngx_uint_t n); u_char *ngx_acceptex_log_error(ngx_log_t *log, u_char *buf, size_t len); #endif ngx_int_t ngx_send_lowat(ngx_connection_t *c, size_t lowat); /* used in ngx_log_debugX() */ #define ngx_event_ident(p) … #include <ngx_event_timer.h> #include <ngx_event_posted.h> #include <ngx_event_udp.h> #if (NGX_WIN32) #include <ngx_iocp_module.h> #endif #endif /* _NGX_EVENT_H_INCLUDED_ */
Codebase Browser
nginx