forked from Hakase/nginx-build
Initial commit
This commit is contained in:
Hakase
@@ -0,0 +1,722 @@
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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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#include <ngx_config.h>
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#include <ngx_core.h>
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#include <ngx_event.h>
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typedef struct {
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ngx_uint_t changes;
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ngx_uint_t events;
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} ngx_kqueue_conf_t;
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static ngx_int_t ngx_kqueue_init(ngx_cycle_t *cycle, ngx_msec_t timer);
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#ifdef EVFILT_USER
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static ngx_int_t ngx_kqueue_notify_init(ngx_log_t *log);
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#endif
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static void ngx_kqueue_done(ngx_cycle_t *cycle);
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static ngx_int_t ngx_kqueue_add_event(ngx_event_t *ev, ngx_int_t event,
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ngx_uint_t flags);
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static ngx_int_t ngx_kqueue_del_event(ngx_event_t *ev, ngx_int_t event,
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ngx_uint_t flags);
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static ngx_int_t ngx_kqueue_set_event(ngx_event_t *ev, ngx_int_t filter,
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ngx_uint_t flags);
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#ifdef EVFILT_USER
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static ngx_int_t ngx_kqueue_notify(ngx_event_handler_pt handler);
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#endif
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static ngx_int_t ngx_kqueue_process_events(ngx_cycle_t *cycle, ngx_msec_t timer,
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ngx_uint_t flags);
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static ngx_inline void ngx_kqueue_dump_event(ngx_log_t *log,
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struct kevent *kev);
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static void *ngx_kqueue_create_conf(ngx_cycle_t *cycle);
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static char *ngx_kqueue_init_conf(ngx_cycle_t *cycle, void *conf);
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int ngx_kqueue = -1;
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static struct kevent *change_list;
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static struct kevent *event_list;
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static ngx_uint_t max_changes, nchanges, nevents;
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#ifdef EVFILT_USER
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static ngx_event_t notify_event;
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static struct kevent notify_kev;
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#endif
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static ngx_str_t kqueue_name = ngx_string("kqueue");
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static ngx_command_t ngx_kqueue_commands[] = {
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{ ngx_string("kqueue_changes"),
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NGX_EVENT_CONF|NGX_CONF_TAKE1,
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ngx_conf_set_num_slot,
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0,
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offsetof(ngx_kqueue_conf_t, changes),
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NULL },
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{ ngx_string("kqueue_events"),
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NGX_EVENT_CONF|NGX_CONF_TAKE1,
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ngx_conf_set_num_slot,
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0,
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offsetof(ngx_kqueue_conf_t, events),
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NULL },
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ngx_null_command
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};
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static ngx_event_module_t ngx_kqueue_module_ctx = {
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&kqueue_name,
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ngx_kqueue_create_conf, /* create configuration */
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ngx_kqueue_init_conf, /* init configuration */
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{
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ngx_kqueue_add_event, /* add an event */
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ngx_kqueue_del_event, /* delete an event */
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ngx_kqueue_add_event, /* enable an event */
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ngx_kqueue_del_event, /* disable an event */
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NULL, /* add an connection */
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NULL, /* delete an connection */
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#ifdef EVFILT_USER
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ngx_kqueue_notify, /* trigger a notify */
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#else
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NULL, /* trigger a notify */
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#endif
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ngx_kqueue_process_events, /* process the events */
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ngx_kqueue_init, /* init the events */
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ngx_kqueue_done /* done the events */
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}
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};
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ngx_module_t ngx_kqueue_module = {
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NGX_MODULE_V1,
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&ngx_kqueue_module_ctx, /* module context */
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ngx_kqueue_commands, /* module directives */
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NGX_EVENT_MODULE, /* module type */
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NULL, /* init master */
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NULL, /* init module */
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NULL, /* init process */
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NULL, /* init thread */
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NULL, /* exit thread */
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NULL, /* exit process */
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NULL, /* exit master */
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NGX_MODULE_V1_PADDING
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};
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static ngx_int_t
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ngx_kqueue_init(ngx_cycle_t *cycle, ngx_msec_t timer)
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{
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ngx_kqueue_conf_t *kcf;
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struct timespec ts;
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#if (NGX_HAVE_TIMER_EVENT)
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struct kevent kev;
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#endif
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kcf = ngx_event_get_conf(cycle->conf_ctx, ngx_kqueue_module);
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if (ngx_kqueue == -1) {
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ngx_kqueue = kqueue();
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if (ngx_kqueue == -1) {
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ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
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"kqueue() failed");
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return NGX_ERROR;
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}
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#ifdef EVFILT_USER
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if (ngx_kqueue_notify_init(cycle->log) != NGX_OK) {
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return NGX_ERROR;
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}
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#endif
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}
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if (max_changes < kcf->changes) {
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if (nchanges) {
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ts.tv_sec = 0;
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ts.tv_nsec = 0;
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if (kevent(ngx_kqueue, change_list, (int) nchanges, NULL, 0, &ts)
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== -1)
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{
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ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
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"kevent() failed");
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return NGX_ERROR;
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}
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nchanges = 0;
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}
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if (change_list) {
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ngx_free(change_list);
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}
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change_list = ngx_alloc(kcf->changes * sizeof(struct kevent),
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cycle->log);
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if (change_list == NULL) {
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return NGX_ERROR;
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}
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}
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max_changes = kcf->changes;
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if (nevents < kcf->events) {
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if (event_list) {
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ngx_free(event_list);
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}
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event_list = ngx_alloc(kcf->events * sizeof(struct kevent), cycle->log);
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if (event_list == NULL) {
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return NGX_ERROR;
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}
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}
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ngx_event_flags = NGX_USE_ONESHOT_EVENT
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|NGX_USE_KQUEUE_EVENT
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|NGX_USE_VNODE_EVENT;
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#if (NGX_HAVE_TIMER_EVENT)
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if (timer) {
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kev.ident = 0;
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kev.filter = EVFILT_TIMER;
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kev.flags = EV_ADD|EV_ENABLE;
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kev.fflags = 0;
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kev.data = timer;
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kev.udata = 0;
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ts.tv_sec = 0;
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ts.tv_nsec = 0;
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if (kevent(ngx_kqueue, &kev, 1, NULL, 0, &ts) == -1) {
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ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
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"kevent(EVFILT_TIMER) failed");
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return NGX_ERROR;
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}
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ngx_event_flags |= NGX_USE_TIMER_EVENT;
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}
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#endif
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#if (NGX_HAVE_CLEAR_EVENT)
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ngx_event_flags |= NGX_USE_CLEAR_EVENT;
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#else
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ngx_event_flags |= NGX_USE_LEVEL_EVENT;
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#endif
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#if (NGX_HAVE_LOWAT_EVENT)
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ngx_event_flags |= NGX_USE_LOWAT_EVENT;
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#endif
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nevents = kcf->events;
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ngx_io = ngx_os_io;
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ngx_event_actions = ngx_kqueue_module_ctx.actions;
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return NGX_OK;
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}
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#ifdef EVFILT_USER
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static ngx_int_t
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ngx_kqueue_notify_init(ngx_log_t *log)
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{
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notify_kev.ident = 0;
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notify_kev.filter = EVFILT_USER;
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notify_kev.data = 0;
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notify_kev.flags = EV_ADD|EV_CLEAR;
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notify_kev.fflags = 0;
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notify_kev.udata = 0;
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if (kevent(ngx_kqueue, ¬ify_kev, 1, NULL, 0, NULL) == -1) {
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ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
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"kevent(EVFILT_USER, EV_ADD) failed");
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return NGX_ERROR;
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}
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notify_event.active = 1;
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notify_event.log = log;
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notify_kev.flags = 0;
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notify_kev.fflags = NOTE_TRIGGER;
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notify_kev.udata = NGX_KQUEUE_UDATA_T ((uintptr_t) ¬ify_event);
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return NGX_OK;
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}
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#endif
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static void
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ngx_kqueue_done(ngx_cycle_t *cycle)
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{
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if (close(ngx_kqueue) == -1) {
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ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
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"kqueue close() failed");
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}
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ngx_kqueue = -1;
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ngx_free(change_list);
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ngx_free(event_list);
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change_list = NULL;
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event_list = NULL;
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max_changes = 0;
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nchanges = 0;
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nevents = 0;
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}
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static ngx_int_t
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ngx_kqueue_add_event(ngx_event_t *ev, ngx_int_t event, ngx_uint_t flags)
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{
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ngx_int_t rc;
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#if 0
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ngx_event_t *e;
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ngx_connection_t *c;
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#endif
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ev->active = 1;
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ev->disabled = 0;
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ev->oneshot = (flags & NGX_ONESHOT_EVENT) ? 1 : 0;
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#if 0
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if (ev->index < nchanges
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&& ((uintptr_t) change_list[ev->index].udata & (uintptr_t) ~1)
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== (uintptr_t) ev)
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{
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if (change_list[ev->index].flags == EV_DISABLE) {
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/*
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* if the EV_DISABLE is still not passed to a kernel
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* we will not pass it
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*/
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ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0,
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"kevent activated: %d: ft:%i",
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ngx_event_ident(ev->data), event);
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if (ev->index < --nchanges) {
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e = (ngx_event_t *)
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((uintptr_t) change_list[nchanges].udata & (uintptr_t) ~1);
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change_list[ev->index] = change_list[nchanges];
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e->index = ev->index;
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}
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return NGX_OK;
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}
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c = ev->data;
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ngx_log_error(NGX_LOG_ALERT, ev->log, 0,
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"previous event on #%d were not passed in kernel", c->fd);
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return NGX_ERROR;
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}
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#endif
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rc = ngx_kqueue_set_event(ev, event, EV_ADD|EV_ENABLE|flags);
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return rc;
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}
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static ngx_int_t
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ngx_kqueue_del_event(ngx_event_t *ev, ngx_int_t event, ngx_uint_t flags)
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{
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ngx_int_t rc;
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ngx_event_t *e;
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ev->active = 0;
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ev->disabled = 0;
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if (ev->index < nchanges
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&& ((uintptr_t) change_list[ev->index].udata & (uintptr_t) ~1)
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== (uintptr_t) ev)
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{
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ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0,
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"kevent deleted: %d: ft:%i",
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ngx_event_ident(ev->data), event);
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/* if the event is still not passed to a kernel we will not pass it */
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nchanges--;
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if (ev->index < nchanges) {
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e = (ngx_event_t *)
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((uintptr_t) change_list[nchanges].udata & (uintptr_t) ~1);
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change_list[ev->index] = change_list[nchanges];
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e->index = ev->index;
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}
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return NGX_OK;
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}
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/*
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* when the file descriptor is closed the kqueue automatically deletes
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* its filters so we do not need to delete explicitly the event
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* before the closing the file descriptor.
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*/
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if (flags & NGX_CLOSE_EVENT) {
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return NGX_OK;
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}
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if (flags & NGX_DISABLE_EVENT) {
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ev->disabled = 1;
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} else {
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flags |= EV_DELETE;
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}
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rc = ngx_kqueue_set_event(ev, event, flags);
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return rc;
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}
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static ngx_int_t
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ngx_kqueue_set_event(ngx_event_t *ev, ngx_int_t filter, ngx_uint_t flags)
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{
|
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struct kevent *kev;
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struct timespec ts;
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ngx_connection_t *c;
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c = ev->data;
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ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ev->log, 0,
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"kevent set event: %d: ft:%i fl:%04Xi",
|
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c->fd, filter, flags);
|
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|
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if (nchanges >= max_changes) {
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ngx_log_error(NGX_LOG_WARN, ev->log, 0,
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"kqueue change list is filled up");
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ts.tv_sec = 0;
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ts.tv_nsec = 0;
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if (kevent(ngx_kqueue, change_list, (int) nchanges, NULL, 0, &ts)
|
||||
== -1)
|
||||
{
|
||||
ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_errno, "kevent() failed");
|
||||
return NGX_ERROR;
|
||||
}
|
||||
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||||
nchanges = 0;
|
||||
}
|
||||
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||||
kev = &change_list[nchanges];
|
||||
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||||
kev->ident = c->fd;
|
||||
kev->filter = (short) filter;
|
||||
kev->flags = (u_short) flags;
|
||||
kev->udata = NGX_KQUEUE_UDATA_T ((uintptr_t) ev | ev->instance);
|
||||
|
||||
if (filter == EVFILT_VNODE) {
|
||||
kev->fflags = NOTE_DELETE|NOTE_WRITE|NOTE_EXTEND
|
||||
|NOTE_ATTRIB|NOTE_RENAME
|
||||
#if (__FreeBSD__ == 4 && __FreeBSD_version >= 430000) \
|
||||
|| __FreeBSD_version >= 500018
|
||||
|NOTE_REVOKE
|
||||
#endif
|
||||
;
|
||||
kev->data = 0;
|
||||
|
||||
} else {
|
||||
#if (NGX_HAVE_LOWAT_EVENT)
|
||||
if (flags & NGX_LOWAT_EVENT) {
|
||||
kev->fflags = NOTE_LOWAT;
|
||||
kev->data = ev->available;
|
||||
|
||||
} else {
|
||||
kev->fflags = 0;
|
||||
kev->data = 0;
|
||||
}
|
||||
#else
|
||||
kev->fflags = 0;
|
||||
kev->data = 0;
|
||||
#endif
|
||||
}
|
||||
|
||||
ev->index = nchanges;
|
||||
nchanges++;
|
||||
|
||||
if (flags & NGX_FLUSH_EVENT) {
|
||||
ts.tv_sec = 0;
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||||
ts.tv_nsec = 0;
|
||||
|
||||
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, 0, "kevent flush");
|
||||
|
||||
if (kevent(ngx_kqueue, change_list, (int) nchanges, NULL, 0, &ts)
|
||||
== -1)
|
||||
{
|
||||
ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_errno, "kevent() failed");
|
||||
return NGX_ERROR;
|
||||
}
|
||||
|
||||
nchanges = 0;
|
||||
}
|
||||
|
||||
return NGX_OK;
|
||||
}
|
||||
|
||||
|
||||
#ifdef EVFILT_USER
|
||||
|
||||
static ngx_int_t
|
||||
ngx_kqueue_notify(ngx_event_handler_pt handler)
|
||||
{
|
||||
notify_event.handler = handler;
|
||||
|
||||
if (kevent(ngx_kqueue, ¬ify_kev, 1, NULL, 0, NULL) == -1) {
|
||||
ngx_log_error(NGX_LOG_ALERT, notify_event.log, ngx_errno,
|
||||
"kevent(EVFILT_USER, NOTE_TRIGGER) failed");
|
||||
return NGX_ERROR;
|
||||
}
|
||||
|
||||
return NGX_OK;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
static ngx_int_t
|
||||
ngx_kqueue_process_events(ngx_cycle_t *cycle, ngx_msec_t timer,
|
||||
ngx_uint_t flags)
|
||||
{
|
||||
int events, n;
|
||||
ngx_int_t i, instance;
|
||||
ngx_uint_t level;
|
||||
ngx_err_t err;
|
||||
ngx_event_t *ev;
|
||||
ngx_queue_t *queue;
|
||||
struct timespec ts, *tp;
|
||||
|
||||
n = (int) nchanges;
|
||||
nchanges = 0;
|
||||
|
||||
if (timer == NGX_TIMER_INFINITE) {
|
||||
tp = NULL;
|
||||
|
||||
} else {
|
||||
|
||||
ts.tv_sec = timer / 1000;
|
||||
ts.tv_nsec = (timer % 1000) * 1000000;
|
||||
|
||||
/*
|
||||
* 64-bit Darwin kernel has the bug: kernel level ts.tv_nsec is
|
||||
* the int32_t while user level ts.tv_nsec is the long (64-bit),
|
||||
* so on the big endian PowerPC all nanoseconds are lost.
|
||||
*/
|
||||
|
||||
#if (NGX_DARWIN_KEVENT_BUG)
|
||||
ts.tv_nsec <<= 32;
|
||||
#endif
|
||||
|
||||
tp = &ts;
|
||||
}
|
||||
|
||||
ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
||||
"kevent timer: %M, changes: %d", timer, n);
|
||||
|
||||
events = kevent(ngx_kqueue, change_list, n, event_list, (int) nevents, tp);
|
||||
|
||||
err = (events == -1) ? ngx_errno : 0;
|
||||
|
||||
if (flags & NGX_UPDATE_TIME || ngx_event_timer_alarm) {
|
||||
ngx_time_update();
|
||||
}
|
||||
|
||||
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
||||
"kevent events: %d", events);
|
||||
|
||||
if (err) {
|
||||
if (err == NGX_EINTR) {
|
||||
|
||||
if (ngx_event_timer_alarm) {
|
||||
ngx_event_timer_alarm = 0;
|
||||
return NGX_OK;
|
||||
}
|
||||
|
||||
level = NGX_LOG_INFO;
|
||||
|
||||
} else {
|
||||
level = NGX_LOG_ALERT;
|
||||
}
|
||||
|
||||
ngx_log_error(level, cycle->log, err, "kevent() failed");
|
||||
return NGX_ERROR;
|
||||
}
|
||||
|
||||
if (events == 0) {
|
||||
if (timer != NGX_TIMER_INFINITE) {
|
||||
return NGX_OK;
|
||||
}
|
||||
|
||||
ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
|
||||
"kevent() returned no events without timeout");
|
||||
return NGX_ERROR;
|
||||
}
|
||||
|
||||
for (i = 0; i < events; i++) {
|
||||
|
||||
ngx_kqueue_dump_event(cycle->log, &event_list[i]);
|
||||
|
||||
if (event_list[i].flags & EV_ERROR) {
|
||||
ngx_log_error(NGX_LOG_ALERT, cycle->log, event_list[i].data,
|
||||
"kevent() error on %d filter:%d flags:%04Xd",
|
||||
(int) event_list[i].ident, event_list[i].filter,
|
||||
event_list[i].flags);
|
||||
continue;
|
||||
}
|
||||
|
||||
#if (NGX_HAVE_TIMER_EVENT)
|
||||
|
||||
if (event_list[i].filter == EVFILT_TIMER) {
|
||||
ngx_time_update();
|
||||
continue;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
ev = (ngx_event_t *) event_list[i].udata;
|
||||
|
||||
switch (event_list[i].filter) {
|
||||
|
||||
case EVFILT_READ:
|
||||
case EVFILT_WRITE:
|
||||
|
||||
instance = (uintptr_t) ev & 1;
|
||||
ev = (ngx_event_t *) ((uintptr_t) ev & (uintptr_t) ~1);
|
||||
|
||||
if (ev->closed || ev->instance != instance) {
|
||||
|
||||
/*
|
||||
* the stale event from a file descriptor
|
||||
* that was just closed in this iteration
|
||||
*/
|
||||
|
||||
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
||||
"kevent: stale event %p", ev);
|
||||
continue;
|
||||
}
|
||||
|
||||
if (ev->log && (ev->log->log_level & NGX_LOG_DEBUG_CONNECTION)) {
|
||||
ngx_kqueue_dump_event(ev->log, &event_list[i]);
|
||||
}
|
||||
|
||||
if (ev->oneshot) {
|
||||
ev->active = 0;
|
||||
}
|
||||
|
||||
ev->available = event_list[i].data;
|
||||
|
||||
if (event_list[i].flags & EV_EOF) {
|
||||
ev->pending_eof = 1;
|
||||
ev->kq_errno = event_list[i].fflags;
|
||||
}
|
||||
|
||||
ev->ready = 1;
|
||||
|
||||
break;
|
||||
|
||||
case EVFILT_VNODE:
|
||||
ev->kq_vnode = 1;
|
||||
|
||||
break;
|
||||
|
||||
case EVFILT_AIO:
|
||||
ev->complete = 1;
|
||||
ev->ready = 1;
|
||||
|
||||
break;
|
||||
|
||||
#ifdef EVFILT_USER
|
||||
case EVFILT_USER:
|
||||
break;
|
||||
#endif
|
||||
|
||||
default:
|
||||
ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
|
||||
"unexpected kevent() filter %d",
|
||||
event_list[i].filter);
|
||||
continue;
|
||||
}
|
||||
|
||||
if (flags & NGX_POST_EVENTS) {
|
||||
queue = ev->accept ? &ngx_posted_accept_events
|
||||
: &ngx_posted_events;
|
||||
|
||||
ngx_post_event(ev, queue);
|
||||
|
||||
continue;
|
||||
}
|
||||
|
||||
ev->handler(ev);
|
||||
}
|
||||
|
||||
return NGX_OK;
|
||||
}
|
||||
|
||||
|
||||
static ngx_inline void
|
||||
ngx_kqueue_dump_event(ngx_log_t *log, struct kevent *kev)
|
||||
{
|
||||
if (kev->ident > 0x8000000 && kev->ident != (unsigned) -1) {
|
||||
ngx_log_debug6(NGX_LOG_DEBUG_EVENT, log, 0,
|
||||
"kevent: %p: ft:%d fl:%04Xd ff:%08Xd d:%d ud:%p",
|
||||
(void *) kev->ident, kev->filter,
|
||||
kev->flags, kev->fflags,
|
||||
(int) kev->data, kev->udata);
|
||||
|
||||
} else {
|
||||
ngx_log_debug6(NGX_LOG_DEBUG_EVENT, log, 0,
|
||||
"kevent: %d: ft:%d fl:%04Xd ff:%08Xd d:%d ud:%p",
|
||||
(int) kev->ident, kev->filter,
|
||||
kev->flags, kev->fflags,
|
||||
(int) kev->data, kev->udata);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void *
|
||||
ngx_kqueue_create_conf(ngx_cycle_t *cycle)
|
||||
{
|
||||
ngx_kqueue_conf_t *kcf;
|
||||
|
||||
kcf = ngx_palloc(cycle->pool, sizeof(ngx_kqueue_conf_t));
|
||||
if (kcf == NULL) {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
kcf->changes = NGX_CONF_UNSET;
|
||||
kcf->events = NGX_CONF_UNSET;
|
||||
|
||||
return kcf;
|
||||
}
|
||||
|
||||
|
||||
static char *
|
||||
ngx_kqueue_init_conf(ngx_cycle_t *cycle, void *conf)
|
||||
{
|
||||
ngx_kqueue_conf_t *kcf = conf;
|
||||
|
||||
ngx_conf_init_uint_value(kcf->changes, 512);
|
||||
ngx_conf_init_uint_value(kcf->events, 512);
|
||||
|
||||
return NGX_CONF_OK;
|
||||
}
|
||||
Reference in New Issue
Block a user