forked from Hakase/nginx-build
Initial commit
This commit is contained in:
Hakase
@@ -0,0 +1,539 @@
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/*
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* Copyright (C) Igor Sysoev
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* Copyright (C) Nginx, Inc.
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*/
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#ifndef _NGX_EVENT_H_INCLUDED_
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#define _NGX_EVENT_H_INCLUDED_
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#include <ngx_config.h>
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#include <ngx_core.h>
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#define NGX_INVALID_INDEX 0xd0d0d0d0
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#if (NGX_HAVE_IOCP)
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typedef struct {
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WSAOVERLAPPED ovlp;
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ngx_event_t *event;
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int error;
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} ngx_event_ovlp_t;
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#endif
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struct ngx_event_s {
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void *data;
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unsigned write:1;
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unsigned accept:1;
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/* used to detect the stale events in kqueue and epoll */
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unsigned instance:1;
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/*
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* the event was passed or would be passed to a kernel;
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* in aio mode - operation was posted.
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*/
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unsigned active:1;
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unsigned disabled:1;
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/* the ready event; in aio mode 0 means that no operation can be posted */
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unsigned ready:1;
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unsigned oneshot:1;
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/* aio operation is complete */
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unsigned complete:1;
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unsigned eof:1;
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unsigned error:1;
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unsigned timedout:1;
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unsigned timer_set:1;
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unsigned delayed:1;
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unsigned deferred_accept:1;
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/* the pending eof reported by kqueue, epoll or in aio chain operation */
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unsigned pending_eof:1;
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unsigned posted:1;
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unsigned closed:1;
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/* to test on worker exit */
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unsigned channel:1;
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unsigned resolver:1;
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unsigned cancelable:1;
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#if (NGX_HAVE_KQUEUE)
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unsigned kq_vnode:1;
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/* the pending errno reported by kqueue */
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int kq_errno;
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#endif
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/*
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* kqueue only:
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* accept: number of sockets that wait to be accepted
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* read: bytes to read when event is ready
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* or lowat when event is set with NGX_LOWAT_EVENT flag
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* write: available space in buffer when event is ready
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* or lowat when event is set with NGX_LOWAT_EVENT flag
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*
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* epoll with EPOLLRDHUP:
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* accept: 1 if accept many, 0 otherwise
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* read: 1 if there can be data to read, 0 otherwise
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*
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* iocp: TODO
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*
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* otherwise:
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* accept: 1 if accept many, 0 otherwise
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*/
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#if (NGX_HAVE_KQUEUE) || (NGX_HAVE_IOCP)
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int available;
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#else
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unsigned available:1;
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#endif
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ngx_event_handler_pt handler;
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#if (NGX_HAVE_IOCP)
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ngx_event_ovlp_t ovlp;
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#endif
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ngx_uint_t index;
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ngx_log_t *log;
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ngx_rbtree_node_t timer;
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/* the posted queue */
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ngx_queue_t queue;
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#if 0
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/* the threads support */
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/*
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* the event thread context, we store it here
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* if $(CC) does not understand __thread declaration
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* and pthread_getspecific() is too costly
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*/
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void *thr_ctx;
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#if (NGX_EVENT_T_PADDING)
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/* event should not cross cache line in SMP */
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uint32_t padding[NGX_EVENT_T_PADDING];
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#endif
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#endif
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};
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#if (NGX_HAVE_FILE_AIO)
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struct ngx_event_aio_s {
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void *data;
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ngx_event_handler_pt handler;
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ngx_file_t *file;
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ngx_fd_t fd;
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#if (NGX_HAVE_AIO_SENDFILE || NGX_COMPAT)
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ssize_t (*preload_handler)(ngx_buf_t *file);
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#endif
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#if (NGX_HAVE_EVENTFD)
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int64_t res;
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#endif
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#if !(NGX_HAVE_EVENTFD) || (NGX_TEST_BUILD_EPOLL)
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ngx_err_t err;
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size_t nbytes;
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#endif
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ngx_aiocb_t aiocb;
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ngx_event_t event;
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};
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#endif
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typedef struct {
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ngx_int_t (*add)(ngx_event_t *ev, ngx_int_t event, ngx_uint_t flags);
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ngx_int_t (*del)(ngx_event_t *ev, ngx_int_t event, ngx_uint_t flags);
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ngx_int_t (*enable)(ngx_event_t *ev, ngx_int_t event, ngx_uint_t flags);
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ngx_int_t (*disable)(ngx_event_t *ev, ngx_int_t event, ngx_uint_t flags);
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ngx_int_t (*add_conn)(ngx_connection_t *c);
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ngx_int_t (*del_conn)(ngx_connection_t *c, ngx_uint_t flags);
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ngx_int_t (*notify)(ngx_event_handler_pt handler);
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ngx_int_t (*process_events)(ngx_cycle_t *cycle, ngx_msec_t timer,
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ngx_uint_t flags);
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ngx_int_t (*init)(ngx_cycle_t *cycle, ngx_msec_t timer);
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void (*done)(ngx_cycle_t *cycle);
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} ngx_event_actions_t;
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extern ngx_event_actions_t ngx_event_actions;
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#if (NGX_HAVE_EPOLLRDHUP)
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extern ngx_uint_t ngx_use_epoll_rdhup;
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#endif
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/*
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* The event filter requires to read/write the whole data:
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* select, poll, /dev/poll, kqueue, epoll.
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*/
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#define NGX_USE_LEVEL_EVENT 0x00000001
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/*
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* The event filter is deleted after a notification without an additional
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* syscall: kqueue, epoll.
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*/
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#define NGX_USE_ONESHOT_EVENT 0x00000002
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/*
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* The event filter notifies only the changes and an initial level:
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* kqueue, epoll.
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*/
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#define NGX_USE_CLEAR_EVENT 0x00000004
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/*
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* The event filter has kqueue features: the eof flag, errno,
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* available data, etc.
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*/
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#define NGX_USE_KQUEUE_EVENT 0x00000008
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/*
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* The event filter supports low water mark: kqueue's NOTE_LOWAT.
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* kqueue in FreeBSD 4.1-4.2 has no NOTE_LOWAT so we need a separate flag.
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*/
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#define NGX_USE_LOWAT_EVENT 0x00000010
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/*
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* The event filter requires to do i/o operation until EAGAIN: epoll.
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*/
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#define NGX_USE_GREEDY_EVENT 0x00000020
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/*
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* The event filter is epoll.
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*/
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#define NGX_USE_EPOLL_EVENT 0x00000040
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/*
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* Obsolete.
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*/
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#define NGX_USE_RTSIG_EVENT 0x00000080
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/*
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* Obsolete.
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*/
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#define NGX_USE_AIO_EVENT 0x00000100
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/*
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* Need to add socket or handle only once: i/o completion port.
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*/
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#define NGX_USE_IOCP_EVENT 0x00000200
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/*
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* The event filter has no opaque data and requires file descriptors table:
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* poll, /dev/poll.
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*/
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#define NGX_USE_FD_EVENT 0x00000400
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/*
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* The event module handles periodic or absolute timer event by itself:
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* kqueue in FreeBSD 4.4, NetBSD 2.0, and MacOSX 10.4, Solaris 10's event ports.
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*/
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#define NGX_USE_TIMER_EVENT 0x00000800
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/*
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* All event filters on file descriptor are deleted after a notification:
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* Solaris 10's event ports.
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*/
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#define NGX_USE_EVENTPORT_EVENT 0x00001000
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/*
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* The event filter support vnode notifications: kqueue.
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*/
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#define NGX_USE_VNODE_EVENT 0x00002000
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/*
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* The event filter is deleted just before the closing file.
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* Has no meaning for select and poll.
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* kqueue, epoll, eventport: allows to avoid explicit delete,
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* because filter automatically is deleted
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* on file close,
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*
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* /dev/poll: we need to flush POLLREMOVE event
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* before closing file.
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*/
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#define NGX_CLOSE_EVENT 1
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/*
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* disable temporarily event filter, this may avoid locks
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* in kernel malloc()/free(): kqueue.
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*/
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#define NGX_DISABLE_EVENT 2
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/*
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* event must be passed to kernel right now, do not wait until batch processing.
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*/
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#define NGX_FLUSH_EVENT 4
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/* these flags have a meaning only for kqueue */
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#define NGX_LOWAT_EVENT 0
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#define NGX_VNODE_EVENT 0
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#if (NGX_HAVE_EPOLL) && !(NGX_HAVE_EPOLLRDHUP)
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#define EPOLLRDHUP 0
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#endif
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#if (NGX_HAVE_KQUEUE)
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#define NGX_READ_EVENT EVFILT_READ
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#define NGX_WRITE_EVENT EVFILT_WRITE
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#undef NGX_VNODE_EVENT
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#define NGX_VNODE_EVENT EVFILT_VNODE
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/*
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* NGX_CLOSE_EVENT, NGX_LOWAT_EVENT, and NGX_FLUSH_EVENT are the module flags
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* and they must not go into a kernel so we need to choose the value
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* that must not interfere with any existent and future kqueue flags.
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* kqueue has such values - EV_FLAG1, EV_EOF, and EV_ERROR:
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* they are reserved and cleared on a kernel entrance.
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*/
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#undef NGX_CLOSE_EVENT
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#define NGX_CLOSE_EVENT EV_EOF
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#undef NGX_LOWAT_EVENT
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#define NGX_LOWAT_EVENT EV_FLAG1
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#undef NGX_FLUSH_EVENT
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#define NGX_FLUSH_EVENT EV_ERROR
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#define NGX_LEVEL_EVENT 0
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#define NGX_ONESHOT_EVENT EV_ONESHOT
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#define NGX_CLEAR_EVENT EV_CLEAR
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#undef NGX_DISABLE_EVENT
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#define NGX_DISABLE_EVENT EV_DISABLE
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#elif (NGX_HAVE_DEVPOLL && !(NGX_TEST_BUILD_DEVPOLL)) \
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|| (NGX_HAVE_EVENTPORT && !(NGX_TEST_BUILD_EVENTPORT))
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#define NGX_READ_EVENT POLLIN
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#define NGX_WRITE_EVENT POLLOUT
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#define NGX_LEVEL_EVENT 0
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#define NGX_ONESHOT_EVENT 1
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#elif (NGX_HAVE_EPOLL) && !(NGX_TEST_BUILD_EPOLL)
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#define NGX_READ_EVENT (EPOLLIN|EPOLLRDHUP)
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#define NGX_WRITE_EVENT EPOLLOUT
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#define NGX_LEVEL_EVENT 0
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#define NGX_CLEAR_EVENT EPOLLET
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#define NGX_ONESHOT_EVENT 0x70000000
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#if 0
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#define NGX_ONESHOT_EVENT EPOLLONESHOT
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#endif
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#if (NGX_HAVE_EPOLLEXCLUSIVE)
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#define NGX_EXCLUSIVE_EVENT EPOLLEXCLUSIVE
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#endif
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#elif (NGX_HAVE_POLL)
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#define NGX_READ_EVENT POLLIN
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#define NGX_WRITE_EVENT POLLOUT
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#define NGX_LEVEL_EVENT 0
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#define NGX_ONESHOT_EVENT 1
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#else /* select */
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#define NGX_READ_EVENT 0
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#define NGX_WRITE_EVENT 1
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#define NGX_LEVEL_EVENT 0
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#define NGX_ONESHOT_EVENT 1
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#endif /* NGX_HAVE_KQUEUE */
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#if (NGX_HAVE_IOCP)
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#define NGX_IOCP_ACCEPT 0
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#define NGX_IOCP_IO 1
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#define NGX_IOCP_CONNECT 2
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#endif
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#if (NGX_TEST_BUILD_EPOLL)
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#define NGX_EXCLUSIVE_EVENT 0
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#endif
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#ifndef NGX_CLEAR_EVENT
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#define NGX_CLEAR_EVENT 0 /* dummy declaration */
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#endif
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#define ngx_process_events ngx_event_actions.process_events
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#define ngx_done_events ngx_event_actions.done
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#define ngx_add_event ngx_event_actions.add
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#define ngx_del_event ngx_event_actions.del
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#define ngx_add_conn ngx_event_actions.add_conn
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#define ngx_del_conn ngx_event_actions.del_conn
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#define ngx_notify ngx_event_actions.notify
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#define ngx_add_timer ngx_event_add_timer
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#define ngx_del_timer ngx_event_del_timer
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extern ngx_os_io_t ngx_io;
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#define ngx_recv ngx_io.recv
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#define ngx_recv_chain ngx_io.recv_chain
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#define ngx_udp_recv ngx_io.udp_recv
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#define ngx_send ngx_io.send
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#define ngx_send_chain ngx_io.send_chain
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#define ngx_udp_send ngx_io.udp_send
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#define ngx_udp_send_chain ngx_io.udp_send_chain
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#define NGX_EVENT_MODULE 0x544E5645 /* "EVNT" */
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#define NGX_EVENT_CONF 0x02000000
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typedef struct {
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ngx_uint_t connections;
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ngx_uint_t use;
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ngx_flag_t multi_accept;
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ngx_flag_t accept_mutex;
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||||
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ngx_msec_t accept_mutex_delay;
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u_char *name;
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#if (NGX_DEBUG)
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ngx_array_t debug_connection;
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#endif
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} ngx_event_conf_t;
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||||
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||||
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||||
typedef struct {
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||||
ngx_str_t *name;
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||||
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||||
void *(*create_conf)(ngx_cycle_t *cycle);
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||||
char *(*init_conf)(ngx_cycle_t *cycle, void *conf);
|
||||
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||||
ngx_event_actions_t actions;
|
||||
} ngx_event_module_t;
|
||||
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||||
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||||
extern ngx_atomic_t *ngx_connection_counter;
|
||||
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||||
extern ngx_atomic_t *ngx_accept_mutex_ptr;
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||||
extern ngx_shmtx_t ngx_accept_mutex;
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||||
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;
|
||||
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||||
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||||
#if (NGX_STAT_STUB)
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||||
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||||
extern ngx_atomic_t *ngx_stat_accepted;
|
||||
extern ngx_atomic_t *ngx_stat_handled;
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||||
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;
|
||||
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||||
#endif
|
||||
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||||
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||||
#define NGX_UPDATE_TIME 1
|
||||
#define NGX_POST_EVENTS 2
|
||||
|
||||
|
||||
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;
|
||||
|
||||
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||||
#define ngx_event_get_conf(conf_ctx, module) \
|
||||
(*(ngx_get_conf(conf_ctx, ngx_events_module))) [module.ctx_index];
|
||||
|
||||
|
||||
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||||
void ngx_event_accept(ngx_event_t *ev);
|
||||
void ngx_event_recvmsg(ngx_event_t *ev);
|
||||
ngx_int_t ngx_trylock_accept_mutex(ngx_cycle_t *cycle);
|
||||
u_char *ngx_accept_log_error(ngx_log_t *log, u_char *buf, size_t len);
|
||||
|
||||
|
||||
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) ((ngx_connection_t *) (p))->fd
|
||||
|
||||
|
||||
#include <ngx_event_timer.h>
|
||||
#include <ngx_event_posted.h>
|
||||
|
||||
#if (NGX_WIN32)
|
||||
#include <ngx_iocp_module.h>
|
||||
#endif
|
||||
|
||||
|
||||
#endif /* _NGX_EVENT_H_INCLUDED_ */
|
||||
Reference in New Issue
Block a user