1/*
2 * Copyright (c) 2009 Apple Inc. All Rights Reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23
24
25//
26// kq++ - kqueue/kevent interface
27//
28#include <security_utilities/kq++.h>
29
30namespace Security {
31namespace UnixPlusPlus {
32
33
34KQueue::KQueue()
35{
36	UnixError::check(mQueue = ::kqueue());
37}
38
39KQueue::~KQueue()
40{
41	UnixError::check(::close(mQueue));
42}
43
44
45unsigned KQueue::operator () (const KEvent *updates, unsigned updateCount,
46	KEvent *events, unsigned eventCount, const timespec *timeout)
47{
48	int rc = ::kevent64(mQueue, updates, updateCount, events, eventCount, 0, timeout);
49	UnixError::check(rc);
50	assert(rc >= 0);
51	return rc;
52}
53
54
55void KQueue::update(const KEvent &event, unsigned flags)
56{
57	KEvent ev = event;
58	ev.flags = flags;
59	(*this)(&event, 1, NULL, NULL);
60}
61
62bool KQueue::receive(KEvent &event, const timespec *timeout)
63{
64	return (*this)(&event, 1, timeout) > 0;
65}
66
67
68} // end namespace UnixPlusPlus
69} // end namespace Security
70