diff options
Diffstat (limited to 'app/nginx/src/event/modules/ngx_win32_select_module.c')
| -rw-r--r-- | app/nginx/src/event/modules/ngx_win32_select_module.c | 398 |
1 files changed, 0 insertions, 398 deletions
diff --git a/app/nginx/src/event/modules/ngx_win32_select_module.c b/app/nginx/src/event/modules/ngx_win32_select_module.c deleted file mode 100644 index a98a83f..0000000 --- a/app/nginx/src/event/modules/ngx_win32_select_module.c +++ /dev/null @@ -1,398 +0,0 @@ - -/* - * Copyright (C) Igor Sysoev - * Copyright (C) Nginx, Inc. - */ - - -#include <ngx_config.h> -#include <ngx_core.h> -#include <ngx_event.h> - - -static ngx_int_t ngx_select_init(ngx_cycle_t *cycle, ngx_msec_t timer); -static void ngx_select_done(ngx_cycle_t *cycle); -static ngx_int_t ngx_select_add_event(ngx_event_t *ev, ngx_int_t event, - ngx_uint_t flags); -static ngx_int_t ngx_select_del_event(ngx_event_t *ev, ngx_int_t event, - ngx_uint_t flags); -static ngx_int_t ngx_select_process_events(ngx_cycle_t *cycle, ngx_msec_t timer, - ngx_uint_t flags); -static void ngx_select_repair_fd_sets(ngx_cycle_t *cycle); -static char *ngx_select_init_conf(ngx_cycle_t *cycle, void *conf); - - -static fd_set master_read_fd_set; -static fd_set master_write_fd_set; -static fd_set work_read_fd_set; -static fd_set work_write_fd_set; - -static ngx_uint_t max_read; -static ngx_uint_t max_write; -static ngx_uint_t nevents; - -static ngx_event_t **event_index; - - -static ngx_str_t select_name = ngx_string("select"); - -static ngx_event_module_t ngx_select_module_ctx = { - &select_name, - NULL, /* create configuration */ - ngx_select_init_conf, /* init configuration */ - - { - ngx_select_add_event, /* add an event */ - ngx_select_del_event, /* delete an event */ - ngx_select_add_event, /* enable an event */ - ngx_select_del_event, /* disable an event */ - NULL, /* add an connection */ - NULL, /* delete an connection */ - NULL, /* trigger a notify */ - ngx_select_process_events, /* process the events */ - ngx_select_init, /* init the events */ - ngx_select_done /* done the events */ - } - -}; - -ngx_module_t ngx_select_module = { - NGX_MODULE_V1, - &ngx_select_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_select_init(ngx_cycle_t *cycle, ngx_msec_t timer) -{ - ngx_event_t **index; - - if (event_index == NULL) { - FD_ZERO(&master_read_fd_set); - FD_ZERO(&master_write_fd_set); - nevents = 0; - } - - if (ngx_process >= NGX_PROCESS_WORKER - || cycle->old_cycle == NULL - || cycle->old_cycle->connection_n < cycle->connection_n) - { - index = ngx_alloc(sizeof(ngx_event_t *) * 2 * cycle->connection_n, - cycle->log); - if (index == NULL) { - return NGX_ERROR; - } - - if (event_index) { - ngx_memcpy(index, event_index, sizeof(ngx_event_t *) * nevents); - ngx_free(event_index); - } - - event_index = index; - } - - ngx_io = ngx_os_io; - - ngx_event_actions = ngx_select_module_ctx.actions; - - ngx_event_flags = NGX_USE_LEVEL_EVENT; - - max_read = 0; - max_write = 0; - - return NGX_OK; -} - - -static void -ngx_select_done(ngx_cycle_t *cycle) -{ - ngx_free(event_index); - - event_index = NULL; -} - - -static ngx_int_t -ngx_select_add_event(ngx_event_t *ev, ngx_int_t event, ngx_uint_t flags) -{ - ngx_connection_t *c; - - c = ev->data; - - ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, - "select add event fd:%d ev:%i", c->fd, event); - - if (ev->index != NGX_INVALID_INDEX) { - ngx_log_error(NGX_LOG_ALERT, ev->log, 0, - "select event fd:%d ev:%i is already set", c->fd, event); - return NGX_OK; - } - - if ((event == NGX_READ_EVENT && ev->write) - || (event == NGX_WRITE_EVENT && !ev->write)) - { - ngx_log_error(NGX_LOG_ALERT, ev->log, 0, - "invalid select %s event fd:%d ev:%i", - ev->write ? "write" : "read", c->fd, event); - return NGX_ERROR; - } - - if ((event == NGX_READ_EVENT && max_read >= FD_SETSIZE) - || (event == NGX_WRITE_EVENT && max_write >= FD_SETSIZE)) - { - ngx_log_error(NGX_LOG_ERR, ev->log, 0, - "maximum number of descriptors " - "supported by select() is %d", FD_SETSIZE); - return NGX_ERROR; - } - - if (event == NGX_READ_EVENT) { - FD_SET(c->fd, &master_read_fd_set); - max_read++; - - } else if (event == NGX_WRITE_EVENT) { - FD_SET(c->fd, &master_write_fd_set); - max_write++; - } - - ev->active = 1; - - event_index[nevents] = ev; - ev->index = nevents; - nevents++; - - return NGX_OK; -} - - -static ngx_int_t -ngx_select_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) { - return NGX_OK; - } - - ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, - "select del event fd:%d ev:%i", c->fd, event); - - if (event == NGX_READ_EVENT) { - FD_CLR(c->fd, &master_read_fd_set); - max_read--; - - } else if (event == NGX_WRITE_EVENT) { - FD_CLR(c->fd, &master_write_fd_set); - max_write--; - } - - if (ev->index < --nevents) { - e = event_index[nevents]; - event_index[ev->index] = e; - e->index = ev->index; - } - - ev->index = NGX_INVALID_INDEX; - - return NGX_OK; -} - - -static ngx_int_t -ngx_select_process_events(ngx_cycle_t *cycle, ngx_msec_t timer, - ngx_uint_t flags) -{ - int ready, nready; - ngx_err_t err; - ngx_uint_t i, found; - ngx_event_t *ev; - ngx_queue_t *queue; - struct timeval tv, *tp; - ngx_connection_t *c; - -#if (NGX_DEBUG) - if (cycle->log->log_level & NGX_LOG_DEBUG_ALL) { - for (i = 0; i < nevents; i++) { - ev = event_index[i]; - c = ev->data; - ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0, - "select event: fd:%d wr:%d", c->fd, ev->write); - } - } -#endif - - if (timer == NGX_TIMER_INFINITE) { - tp = NULL; - - } else { - tv.tv_sec = (long) (timer / 1000); - tv.tv_usec = (long) ((timer % 1000) * 1000); - tp = &tv; - } - - ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, - "select timer: %M", timer); - - work_read_fd_set = master_read_fd_set; - work_write_fd_set = master_write_fd_set; - - if (max_read || max_write) { - ready = select(0, &work_read_fd_set, &work_write_fd_set, NULL, tp); - - } else { - - /* - * Winsock select() requires that at least one descriptor set must be - * be non-null, and any non-null descriptor set must contain at least - * one handle to a socket. Otherwise select() returns WSAEINVAL. - */ - - ngx_msleep(timer); - - ready = 0; - } - - err = (ready == -1) ? ngx_socket_errno : 0; - - if (flags & NGX_UPDATE_TIME) { - ngx_time_update(); - } - - ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, - "select ready %d", ready); - - if (err) { - ngx_log_error(NGX_LOG_ALERT, cycle->log, err, "select() failed"); - - if (err == WSAENOTSOCK) { - ngx_select_repair_fd_sets(cycle); - } - - return NGX_ERROR; - } - - if (ready == 0) { - if (timer != NGX_TIMER_INFINITE) { - return NGX_OK; - } - - ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, - "select() returned no events without timeout"); - return NGX_ERROR; - } - - nready = 0; - - for (i = 0; i < nevents; i++) { - ev = event_index[i]; - c = ev->data; - found = 0; - - if (ev->write) { - if (FD_ISSET(c->fd, &work_write_fd_set)) { - found = 1; - ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, - "select write %d", c->fd); - } - - } else { - if (FD_ISSET(c->fd, &work_read_fd_set)) { - found = 1; - ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, - "select read %d", c->fd); - } - } - - if (found) { - ev->ready = 1; - - queue = ev->accept ? &ngx_posted_accept_events - : &ngx_posted_events; - - ngx_post_event(ev, queue); - - nready++; - } - } - - if (ready != nready) { - ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, - "select ready != events: %d:%d", ready, nready); - - ngx_select_repair_fd_sets(cycle); - } - - return NGX_OK; -} - - -static void -ngx_select_repair_fd_sets(ngx_cycle_t *cycle) -{ - int n; - u_int i; - socklen_t len; - ngx_err_t err; - ngx_socket_t s; - - for (i = 0; i < master_read_fd_set.fd_count; i++) { - - s = master_read_fd_set.fd_array[i]; - len = sizeof(int); - - if (getsockopt(s, SOL_SOCKET, SO_TYPE, (char *) &n, &len) == -1) { - err = ngx_socket_errno; - - ngx_log_error(NGX_LOG_ALERT, cycle->log, err, - "invalid descriptor #%d in read fd_set", s); - - FD_CLR(s, &master_read_fd_set); - } - } - - for (i = 0; i < master_write_fd_set.fd_count; i++) { - - s = master_write_fd_set.fd_array[i]; - len = sizeof(int); - - if (getsockopt(s, SOL_SOCKET, SO_TYPE, (char *) &n, &len) == -1) { - err = ngx_socket_errno; - - ngx_log_error(NGX_LOG_ALERT, cycle->log, err, - "invalid descriptor #%d in write fd_set", s); - - FD_CLR(s, &master_write_fd_set); - } - } -} - - -static char * -ngx_select_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_select_module.ctx_index) { - return NGX_CONF_OK; - } - - return NGX_CONF_OK; -} |