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/* $OpenBSD: uthread_kevent.c,v 1.5 2006/10/03 02:59:36 kurt Exp $ */
/*-
* Copyright (c) 2000 Jonathan Lemon <jlemon@flugsvamp.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD: uthread_kevent.c,v 1.6 2001/12/08 00:53:37 sobomax Exp $
*/
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/event.h>
#ifdef _THREAD_SAFE
#include <pthread.h>
#include "pthread_private.h"
int
kevent(int kq, const struct kevent *changelist, int nchanges,
struct kevent *eventlist, int nevents, const struct timespec *timeout)
{
struct pthread *curthread = _get_curthread();
struct timespec nullts = { 0, 0 };
int rc;
/* Set the wake up time */
_thread_kern_set_timeout(timeout);
rc = _thread_sys_kevent(kq, changelist, nchanges,
eventlist, nevents, &nullts);
if (rc == 0 && eventlist != NULL && nevents > 0 && (timeout == NULL ||
timeout->tv_sec != 0 || timeout->tv_nsec != 0)) {
/* Save the socket file descriptor: */
curthread->data.fd.fd = kq;
curthread->data.fd.fname = __FILE__;
curthread->data.fd.branch = __LINE__;
do {
/* Reset the interrupted and timeout flags: */
curthread->interrupted = 0;
curthread->closing_fd = 0;
curthread->timeout = 0;
_thread_kern_sched_state(PS_FDR_WAIT,
__FILE__, __LINE__);
if (curthread->interrupted) {
errno = EINTR;
rc = -1;
break;
} else if (curthread->closing_fd) {
errno = EBADF;
rc = -1;
break;
}
rc = _thread_sys_kevent(kq, NULL, 0,
eventlist, nevents, &nullts);
} while (rc == 0 && curthread->timeout == 0);
}
return (rc);
}
#endif
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