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#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_log.h>
#include <ngx_errno.h>
#include <ngx_time.h>
#include <ngx_connection.h>
#include <ngx_event.h>
#include <ngx_event_timer.h>
#include <ngx_iocp_module.h>
int ngx_iocp_threads = 0;;
static HANDLE iocp;
static ngx_event_t *timer_queue;
int ngx_iocp_init(int max_connections, ngx_log_t *log)
{
iocp = CreateIoCompletionPort(INVALID_HANDLE_VALUE,
NULL, 0, ngx_iocp_threads);
if (iocp == NULL) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
"CreateIoCompletionPort() failed");
return NGX_ERROR;
}
timer_queue = ngx_event_init_timer(log);
if (timer_queue == NULL) {
return NGX_ERROR;
}
ngx_event_actions.process = ngx_iocp_process_events;
ngx_event_flags = NGX_HAVE_AIO_EVENT|NGX_HAVE_IOCP_EVENT;
return NGX_OK;
}
int ngx_iocp_add_event(ngx_event_t *ev)
{
ngx_connection_t *c;
c = (ngx_connection_t *) ev->data;
ngx_log_debug(ev->log, "iocp: %d, %08x:%08x" _ c->fd _ ev _ &ev->ovlp);
if (CreateIoCompletionPort((HANDLE) c->fd, iocp, (DWORD) ev, 0) == NULL) {
ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_errno,
"CreateIoCompletionPort() failed");
return NGX_ERROR;
}
return NGX_OK;
}
int ngx_iocp_process_events(ngx_log_t *log)
{
int rc;
size_t bytes;
ngx_err_t err;
ngx_msec_t timer, delta;
ngx_event_t *ev, *e;
ngx_event_ovlp_t *ovlp;
ngx_log_debug(log, "iocp");
timer = ngx_event_find_timer();
if (timer) {
delta = ngx_msec();
} else {
timer = INFINITE;
delta = 0;
}
ngx_log_debug(log, "iocp timer: %d" _ timer);
#if 1
rc = GetQueuedCompletionStatus(iocp, &bytes, (LPDWORD) &e,
(LPOVERLAPPED *) &ovlp, timer);
ngx_log_debug(log, "iocp: %d, %d:%08x:%08x" _ rc _ bytes _ e _ ovlp);
if (rc == 0) {
#else
if (GetQueuedCompletionStatus(iocp, &bytes, (LPDWORD) &e,
(LPOVERLAPPED *) &ovlp, timer) == 0) {
#endif
err = ngx_errno;
if (ovlp == NULL) {
if (err != WAIT_TIMEOUT) {
ngx_log_error(NGX_LOG_ALERT, log, err,
"GetQueuedCompletionStatus() failed");
return NGX_ERROR;
}
} else {
ovlp->error = err;
}
}
if (timer != INFINITE) {
delta = ngx_msec() - delta;
}
if (ovlp) {
ev = ovlp->event;
ngx_log_debug(log, "iocp ev: %08x" _ ev);
if (ev == e) {
ev->ready = 1;
ev->available = bytes;
}
ngx_log_debug(log, "iocp ev: %08x" _ ev->event_handler);
if (ev->event_handler(ev) == NGX_ERROR) {
ev->close_handler(ev);
}
}
if (timer != INFINITE) {
ngx_event_expire_timers(delta);
}
return NGX_OK;
}
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