Mercurial > hg > nginx-quic
view src/event/modules/ngx_iocp_module.c @ 3462:546fdeb20a67
remove code disabled since 0.1.29 version
author | Igor Sysoev <igor@sysoev.ru> |
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date | Wed, 03 Mar 2010 15:14:04 +0000 |
parents | 0b592a68aade |
children | d4c4cfdffe30 e1409e56ba7c |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> #include <ngx_iocp_module.h> static ngx_int_t ngx_iocp_init(ngx_cycle_t *cycle, ngx_msec_t timer); static ngx_thread_value_t __stdcall ngx_iocp_timer(void *data); static void ngx_iocp_done(ngx_cycle_t *cycle); static ngx_int_t ngx_iocp_add_event(ngx_event_t *ev, ngx_int_t event, ngx_uint_t key); static ngx_int_t ngx_iocp_del_connection(ngx_connection_t *c, ngx_uint_t flags); static ngx_int_t ngx_iocp_process_events(ngx_cycle_t *cycle, ngx_msec_t timer, ngx_uint_t flags); static void *ngx_iocp_create_conf(ngx_cycle_t *cycle); static char *ngx_iocp_init_conf(ngx_cycle_t *cycle, void *conf); static ngx_str_t iocp_name = ngx_string("iocp"); static ngx_command_t ngx_iocp_commands[] = { {ngx_string("iocp_threads"), NGX_EVENT_CONF|NGX_CONF_TAKE1, ngx_conf_set_num_slot, 0, offsetof(ngx_iocp_conf_t, threads), NULL}, {ngx_string("post_acceptex"), NGX_EVENT_CONF|NGX_CONF_TAKE1, ngx_conf_set_num_slot, 0, offsetof(ngx_iocp_conf_t, post_acceptex), NULL}, {ngx_string("acceptex_read"), NGX_EVENT_CONF|NGX_CONF_FLAG, ngx_conf_set_flag_slot, 0, offsetof(ngx_iocp_conf_t, acceptex_read), NULL}, ngx_null_command }; ngx_event_module_t ngx_iocp_module_ctx = { &iocp_name, ngx_iocp_create_conf, /* create configuration */ ngx_iocp_init_conf, /* init configuration */ { ngx_iocp_add_event, /* add an event */ NULL, /* delete an event */ NULL, /* enable an event */ NULL, /* disable an event */ NULL, /* add an connection */ ngx_iocp_del_connection, /* delete an connection */ NULL, /* process the changes */ ngx_iocp_process_events, /* process the events */ ngx_iocp_init, /* init the events */ ngx_iocp_done /* done the events */ } }; ngx_module_t ngx_iocp_module = { NGX_MODULE_V1, &ngx_iocp_module_ctx, /* module context */ ngx_iocp_commands, /* 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 }; ngx_os_io_t ngx_iocp_io = { ngx_overlapped_wsarecv, NULL, ngx_udp_overlapped_wsarecv, NULL, ngx_overlapped_wsasend_chain, 0 }; static HANDLE iocp; static ngx_tid_t timer_thread; static ngx_msec_t msec; static ngx_int_t ngx_iocp_init(ngx_cycle_t *cycle, ngx_msec_t timer) { ngx_iocp_conf_t *cf; cf = ngx_event_get_conf(cycle->conf_ctx, ngx_iocp_module); if (iocp == NULL) { iocp = CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, 0, cf->threads); } if (iocp == NULL) { ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, "CreateIoCompletionPort() failed"); return NGX_ERROR; } ngx_io = ngx_iocp_io; ngx_event_actions = ngx_iocp_module_ctx.actions; ngx_event_flags = NGX_USE_AIO_EVENT|NGX_USE_IOCP_EVENT; if (timer == 0) { return NGX_OK; } /* * The waitable timer could not be used, because * GetQueuedCompletionStatus() does not set a thread to alertable state */ if (timer_thread == NULL) { msec = timer; if (ngx_create_thread(&timer_thread, ngx_iocp_timer, &msec, cycle->log) != 0) { return NGX_ERROR; } } ngx_event_flags |= NGX_USE_TIMER_EVENT; return NGX_OK; } static ngx_thread_value_t __stdcall ngx_iocp_timer(void *data) { ngx_msec_t timer = *(ngx_msec_t *) data; ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ngx_cycle->log, 0, "THREAD %p %p", &msec, data); for ( ;; ) { Sleep(timer); ngx_time_update(0, 0); #if 1 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ngx_cycle->log, 0, "timer"); #endif } #ifdef __WATCOMC__ return 0; #endif } static void ngx_iocp_done(ngx_cycle_t *cycle) { if (CloseHandle(iocp) == -1) { ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, "iocp CloseHandle() failed"); } iocp = NULL; } static ngx_int_t ngx_iocp_add_event(ngx_event_t *ev, ngx_int_t event, ngx_uint_t key) { ngx_connection_t *c; c = (ngx_connection_t *) ev->data; c->read->active = 1; c->write->active = 1; ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ev->log, 0, "iocp add: fd:%d k:%ui ov:%p", c->fd, key, &ev->ovlp); if (CreateIoCompletionPort((HANDLE) c->fd, iocp, key, 0) == NULL) { ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, "CreateIoCompletionPort() failed"); return NGX_ERROR; } return NGX_OK; } static ngx_int_t ngx_iocp_del_connection(ngx_connection_t *c, ngx_uint_t flags) { #if 0 if (flags & NGX_CLOSE_EVENT) { return NGX_OK; } if (CancelIo((HANDLE) c->fd) == 0) { ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, "CancelIo() failed"); return NGX_ERROR; } #endif return NGX_OK; } static ngx_int_t ngx_iocp_process_events(ngx_cycle_t *cycle, ngx_msec_t timer, ngx_uint_t flags) { int rc; u_int key; u_long bytes; ngx_err_t err; ngx_msec_t delta; ngx_event_t *ev; ngx_event_ovlp_t *ovlp; if (timer == NGX_TIMER_INFINITE) { timer = INFINITE; } ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "iocp timer: %M", timer); rc = GetQueuedCompletionStatus(iocp, &bytes, (LPDWORD) &key, (LPOVERLAPPED *) &ovlp, (u_long) timer); if (rc == 0) { err = ngx_errno; } else { err = 0; } delta = ngx_current_msec; if (flags & NGX_UPDATE_TIME) { ngx_time_update(0, 0); } ngx_log_debug4(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "iocp: %d b:%d k:%d ov:%p", rc, bytes, key, ovlp); if (timer != INFINITE) { delta = ngx_current_msec - delta; ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "iocp timer: %M, delta: %M", timer, delta); } if (err) { if (ovlp == NULL) { if (err != WAIT_TIMEOUT) { ngx_log_error(NGX_LOG_ALERT, cycle->log, err, "GetQueuedCompletionStatus() failed"); return NGX_ERROR; } return NGX_OK; } ovlp->error = err; } if (ovlp == NULL) { ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, "GetQueuedCompletionStatus() returned no operation"); return NGX_ERROR; } ev = ovlp->event; ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, err, "iocp event:%p", ev); if (err == ERROR_NETNAME_DELETED /* the socket was closed */ || err == ERROR_OPERATION_ABORTED /* the operation was canceled */) { /* * the WSA_OPERATION_ABORTED completion notification * for a file descriptor that was closed */ ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, err, "iocp: aborted event %p", ev); return NGX_OK; } if (err) { ngx_log_error(NGX_LOG_ALERT, cycle->log, err, "GetQueuedCompletionStatus() returned operation error"); } switch (key) { case NGX_IOCP_ACCEPT: if (bytes) { ev->ready = 1; } break; case NGX_IOCP_IO: ev->complete = 1; ev->ready = 1; break; case NGX_IOCP_CONNECT: ev->ready = 1; } ev->available = bytes; ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "iocp event handler: %p", ev->handler); ev->handler(ev); return NGX_OK; } static void * ngx_iocp_create_conf(ngx_cycle_t *cycle) { ngx_iocp_conf_t *cf; cf = ngx_palloc(cycle->pool, sizeof(ngx_iocp_conf_t)); if (cf == NULL) { return NGX_CONF_ERROR; } cf->threads = NGX_CONF_UNSET; cf->post_acceptex = NGX_CONF_UNSET; cf->acceptex_read = NGX_CONF_UNSET; return cf; } static char * ngx_iocp_init_conf(ngx_cycle_t *cycle, void *conf) { ngx_iocp_conf_t *cf = conf; ngx_conf_init_value(cf->threads, 0); ngx_conf_init_value(cf->post_acceptex, 10); ngx_conf_init_value(cf->acceptex_read, 1); return NGX_CONF_OK; }