From bf8c01bfcd015d43cfbcb893e48c6a83a95c91ec Mon Sep 17 00:00:00 2001 From: Ben Magistro Date: Sun, 17 Apr 2022 09:45:02 -0400 Subject: Drop nginx Nginx is not part of the core library being developed and needs to be moved to its own repository to allow it to be more easily maintained. Signed-off-by: Ben Magistro Change-Id: I5639e84ba0564ccd49ffcffa7ec9fcd57827bd6d --- app/nginx/src/event/modules/ngx_poll_module.c | 415 -------------------------- 1 file changed, 415 deletions(-) delete mode 100644 app/nginx/src/event/modules/ngx_poll_module.c (limited to 'app/nginx/src/event/modules/ngx_poll_module.c') diff --git a/app/nginx/src/event/modules/ngx_poll_module.c b/app/nginx/src/event/modules/ngx_poll_module.c deleted file mode 100644 index 4e03dab..0000000 --- a/app/nginx/src/event/modules/ngx_poll_module.c +++ /dev/null @@ -1,415 +0,0 @@ - -/* - * Copyright (C) Igor Sysoev - * Copyright (C) Nginx, Inc. - */ - - -#include -#include -#include - - -static ngx_int_t ngx_poll_init(ngx_cycle_t *cycle, ngx_msec_t timer); -static void ngx_poll_done(ngx_cycle_t *cycle); -static ngx_int_t ngx_poll_add_event(ngx_event_t *ev, ngx_int_t event, - ngx_uint_t flags); -static ngx_int_t ngx_poll_del_event(ngx_event_t *ev, ngx_int_t event, - ngx_uint_t flags); -static ngx_int_t ngx_poll_process_events(ngx_cycle_t *cycle, ngx_msec_t timer, - ngx_uint_t flags); -static char *ngx_poll_init_conf(ngx_cycle_t *cycle, void *conf); - - -static struct pollfd *event_list; -static ngx_uint_t nevents; - - -static ngx_str_t poll_name = ngx_string("poll"); - -static ngx_event_module_t ngx_poll_module_ctx = { - &poll_name, - NULL, /* create configuration */ - ngx_poll_init_conf, /* init configuration */ - - { - ngx_poll_add_event, /* add an event */ - ngx_poll_del_event, /* delete an event */ - ngx_poll_add_event, /* enable an event */ - ngx_poll_del_event, /* disable an event */ - NULL, /* add an connection */ - NULL, /* delete an connection */ - NULL, /* trigger a notify */ - ngx_poll_process_events, /* process the events */ - ngx_poll_init, /* init the events */ - ngx_poll_done /* done the events */ - } - -}; - -ngx_module_t ngx_poll_module = { - NGX_MODULE_V1, - &ngx_poll_module_ctx, /* module context */ - NULL, /* module directives */ - NGX_EVENT_MODULE, /* module type */ - NULL, /* init master */ - NULL, /* init module */ - NULL, /* init process */ - NULL, /* init thread */ - NULL, /* exit thread */ - NULL, /* exit process */ - NULL, /* exit master */ - NGX_MODULE_V1_PADDING -}; - - - -static ngx_int_t -ngx_poll_init(ngx_cycle_t *cycle, ngx_msec_t timer) -{ - struct pollfd *list; - - if (event_list == NULL) { - nevents = 0; - } - - if (ngx_process >= NGX_PROCESS_WORKER - || cycle->old_cycle == NULL - || cycle->old_cycle->connection_n < cycle->connection_n) - { - list = ngx_alloc(sizeof(struct pollfd) * cycle->connection_n, - cycle->log); - if (list == NULL) { - return NGX_ERROR; - } - - if (event_list) { - ngx_memcpy(list, event_list, sizeof(ngx_event_t *) * nevents); - ngx_free(event_list); - } - - event_list = list; - } - - ngx_io = ngx_os_io; - - ngx_event_actions = ngx_poll_module_ctx.actions; - - ngx_event_flags = NGX_USE_LEVEL_EVENT|NGX_USE_FD_EVENT; - - return NGX_OK; -} - - -static void -ngx_poll_done(ngx_cycle_t *cycle) -{ - ngx_free(event_list); - - event_list = NULL; -} - - -static ngx_int_t -ngx_poll_add_event(ngx_event_t *ev, ngx_int_t event, ngx_uint_t flags) -{ - ngx_event_t *e; - ngx_connection_t *c; - - c = ev->data; - - ev->active = 1; - - if (ev->index != NGX_INVALID_INDEX) { - ngx_log_error(NGX_LOG_ALERT, ev->log, 0, - "poll event fd:%d ev:%i is already set", c->fd, event); - return NGX_OK; - } - - if (event == NGX_READ_EVENT) { - e = c->write; -#if (NGX_READ_EVENT != POLLIN) - event = POLLIN; -#endif - - } else { - e = c->read; -#if (NGX_WRITE_EVENT != POLLOUT) - event = POLLOUT; -#endif - } - - ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, - "poll add event: fd:%d ev:%i", c->fd, event); - - if (e == NULL || e->index == NGX_INVALID_INDEX) { - event_list[nevents].fd = c->fd; - event_list[nevents].events = (short) event; - event_list[nevents].revents = 0; - - ev->index = nevents; - nevents++; - - } else { - ngx_log_debug1(NGX_LOG_DEBUG_EVENT, ev->log, 0, - "poll add index: %i", e->index); - - event_list[e->index].events |= (short) event; - ev->index = e->index; - } - - return NGX_OK; -} - - -static ngx_int_t -ngx_poll_del_event(ngx_event_t *ev, ngx_int_t event, ngx_uint_t flags) -{ - ngx_event_t *e; - ngx_connection_t *c; - - c = ev->data; - - ev->active = 0; - - if (ev->index == NGX_INVALID_INDEX) { - ngx_log_error(NGX_LOG_ALERT, ev->log, 0, - "poll event fd:%d ev:%i is already deleted", - c->fd, event); - return NGX_OK; - } - - if (event == NGX_READ_EVENT) { - e = c->write; -#if (NGX_READ_EVENT != POLLIN) - event = POLLIN; -#endif - - } else { - e = c->read; -#if (NGX_WRITE_EVENT != POLLOUT) - event = POLLOUT; -#endif - } - - ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, - "poll del event: fd:%d ev:%i", c->fd, event); - - if (e == NULL || e->index == NGX_INVALID_INDEX) { - nevents--; - - if (ev->index < nevents) { - - ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, - "index: copy event %ui to %i", nevents, ev->index); - - event_list[ev->index] = event_list[nevents]; - - c = ngx_cycle->files[event_list[nevents].fd]; - - if (c->fd == -1) { - ngx_log_error(NGX_LOG_ALERT, ev->log, 0, - "unexpected last event"); - - } else { - if (c->read->index == nevents) { - c->read->index = ev->index; - } - - if (c->write->index == nevents) { - c->write->index = ev->index; - } - } - } - - } else { - ngx_log_debug1(NGX_LOG_DEBUG_EVENT, ev->log, 0, - "poll del index: %i", e->index); - - event_list[e->index].events &= (short) ~event; - } - - ev->index = NGX_INVALID_INDEX; - - return NGX_OK; -} - - -static ngx_int_t -ngx_poll_process_events(ngx_cycle_t *cycle, ngx_msec_t timer, ngx_uint_t flags) -{ - int ready, revents; - ngx_err_t err; - ngx_uint_t i, found, level; - ngx_event_t *ev; - ngx_queue_t *queue; - ngx_connection_t *c; - - /* NGX_TIMER_INFINITE == INFTIM */ - -#if (NGX_DEBUG0) - if (cycle->log->log_level & NGX_LOG_DEBUG_ALL) { - for (i = 0; i < nevents; i++) { - ngx_log_debug3(NGX_LOG_DEBUG_EVENT, cycle->log, 0, - "poll: %ui: fd:%d ev:%04Xd", - i, event_list[i].fd, event_list[i].events); - } - } -#endif - - ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "poll timer: %M", timer); - - ready = poll(event_list, (u_int) nevents, (int) timer); - - err = (ready == -1) ? ngx_errno : 0; - - if (flags & NGX_UPDATE_TIME || ngx_event_timer_alarm) { - ngx_time_update(); - } - - ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0, - "poll ready %d of %ui", ready, nevents); - - 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, "poll() failed"); - return NGX_ERROR; - } - - if (ready == 0) { - if (timer != NGX_TIMER_INFINITE) { - return NGX_OK; - } - - ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, - "poll() returned no events without timeout"); - return NGX_ERROR; - } - - for (i = 0; i < nevents && ready; i++) { - - revents = event_list[i].revents; - -#if 1 - ngx_log_debug4(NGX_LOG_DEBUG_EVENT, cycle->log, 0, - "poll: %ui: fd:%d ev:%04Xd rev:%04Xd", - i, event_list[i].fd, event_list[i].events, revents); -#else - if (revents) { - ngx_log_debug4(NGX_LOG_DEBUG_EVENT, cycle->log, 0, - "poll: %ui: fd:%d ev:%04Xd rev:%04Xd", - i, event_list[i].fd, event_list[i].events, revents); - } -#endif - - if (revents & POLLNVAL) { - ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, - "poll() error fd:%d ev:%04Xd rev:%04Xd", - event_list[i].fd, event_list[i].events, revents); - } - - if (revents & ~(POLLIN|POLLOUT|POLLERR|POLLHUP|POLLNVAL)) { - ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, - "strange poll() events fd:%d ev:%04Xd rev:%04Xd", - event_list[i].fd, event_list[i].events, revents); - } - - if (event_list[i].fd == -1) { - /* - * the disabled event, a workaround for our possible bug, - * see the comment below - */ - continue; - } - - c = ngx_cycle->files[event_list[i].fd]; - - if (c->fd == -1) { - ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, "unexpected event"); - - /* - * it is certainly our fault and it should be investigated, - * in the meantime we disable this event to avoid a CPU spinning - */ - - if (i == nevents - 1) { - nevents--; - } else { - event_list[i].fd = -1; - } - - continue; - } - - if (revents & (POLLERR|POLLHUP|POLLNVAL)) { - - /* - * if the error events were returned, add POLLIN and POLLOUT - * to handle the events at least in one active handler - */ - - revents |= POLLIN|POLLOUT; - } - - found = 0; - - if ((revents & POLLIN) && c->read->active) { - found = 1; - - ev = c->read; - ev->ready = 1; - - queue = ev->accept ? &ngx_posted_accept_events - : &ngx_posted_events; - - ngx_post_event(ev, queue); - } - - if ((revents & POLLOUT) && c->write->active) { - found = 1; - - ev = c->write; - ev->ready = 1; - - ngx_post_event(ev, &ngx_posted_events); - } - - if (found) { - ready--; - continue; - } - } - - if (ready != 0) { - ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, "poll ready != events"); - } - - return NGX_OK; -} - - -static char * -ngx_poll_init_conf(ngx_cycle_t *cycle, void *conf) -{ - ngx_event_conf_t *ecf; - - ecf = ngx_event_get_conf(cycle->conf_ctx, ngx_event_core_module); - - if (ecf->use != ngx_poll_module.ctx_index) { - return NGX_CONF_OK; - } - - return NGX_CONF_OK; -} -- cgit 1.2.3-korg