Mercurial > hg > nginx
view src/event/modules/ngx_iocp_module.c @ 485:4ebe09b07e30 release-0.1.17
nginx-0.1.17-RELEASE import
*) Change: the ngx_http_rewrite_module was rewritten from the scratch.
Now it is possible to redirect, to return the error codes, to check
the variables and referrers. The directives can be used inside
locations. The redirect directive was canceled.
*) Feature: the ngx_http_geo_module.
*) Feature: the proxy_set_x_var and fastcgi_set_var directives.
*) Bugfix: the location configuration with "=" modifier may be used in
another location.
*) Bugfix: the correct content type was set only for requests that use
small caps letters in extension.
*) Bugfix: if the proxy_pass or fastcgi_pass directives were set in the
location, and access was denied, and the error was redirected to a
static page, then the segmentation fault occurred.
*) Bugfix: if in a proxied "Location" header was a relative URL, then a
host name and a slash were added to them; the bug had appeared in
0.1.14.
*) Bugfix: the system error message was not logged on Linux.
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Thu, 03 Feb 2005 19:33:37 +0000 |
parents | a88a3e4e158f |
children | d4ea69372b94 |
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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); static void ngx_iocp_done(ngx_cycle_t *cycle); static ngx_int_t ngx_iocp_add_event(ngx_event_t *ev, int event, u_int key); static ngx_int_t ngx_iocp_del_connection(ngx_connection_t *c, u_int flags); static ngx_int_t ngx_iocp_process_events(ngx_cycle_t *cycle); 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_TAKE1, 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, &ngx_iocp_module_ctx, /* module context */ ngx_iocp_commands, /* module directives */ NGX_EVENT_MODULE, /* module type */ NULL, /* init module */ NULL /* init process */ }; ngx_os_io_t ngx_iocp_io = { ngx_overlapped_wsarecv, NULL, NULL, ngx_overlapped_wsasend_chain, 0 }; static HANDLE iocp; static ngx_int_t ngx_iocp_init(ngx_cycle_t *cycle) { 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_EMERG, 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; return NGX_OK; } 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, int event, u_int 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:%d 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, u_int 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) { int rc; u_int key; u_long bytes; ngx_err_t err; ngx_msec_t timer; ngx_event_t *ev; struct timeval tv; ngx_epoch_msec_t delta; ngx_event_ovlp_t *ovlp; timer = ngx_event_find_timer(); ngx_old_elapsed_msec = ngx_elapsed_msec; if (timer == 0) { timer = INFINITE; } ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "iocp timer: %d", timer); rc = GetQueuedCompletionStatus(iocp, &bytes, (LPDWORD) &key, (LPOVERLAPPED *) &ovlp, timer); if (rc == 0) { err = ngx_errno; } else { err = 0; } ngx_gettimeofday(&tv); ngx_time_update(tv.tv_sec); ngx_log_debug4(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "iocp: %d b:%d k:%d ov:%p", rc, bytes, key, ovlp); delta = ngx_elapsed_msec; ngx_elapsed_msec = (ngx_epoch_msec_t) tv.tv_sec * 1000 + tv.tv_usec / 1000 - ngx_start_msec; if (timer != INFINITE) { delta = ngx_elapsed_msec - delta; ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "iocp timer: %d, delta: %d", timer, (int) delta); } if (err) { if (ovlp == NULL) { if (err != WAIT_TIMEOUT) { ngx_log_error(NGX_LOG_ALERT, cycle->log, err, "GetQueuedCompletionStatus() failed"); return NGX_ERROR; } if (timer != INFINITE && delta) { ngx_event_expire_timers((ngx_msec_t) delta); } 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); if (timer != INFINITE && delta) { ngx_event_expire_timers((ngx_msec_t) delta); } 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->event_handler); ev->event_handler(ev); if (timer != INFINITE && delta) { ngx_event_expire_timers((ngx_msec_t) delta); } return NGX_OK; } static void *ngx_iocp_create_conf(ngx_cycle_t *cycle) { ngx_iocp_conf_t *cf; ngx_test_null(cf, ngx_palloc(cycle->pool, sizeof(ngx_iocp_conf_t)), 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; }