1 /*
2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_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. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29 /*
30 *
31 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
32 *
33 * HISTORY
34 *
35 * 11/13/2000 CJS Created IOCommand class and implementation
36 *
37 */
38
39 #include <IOKit/IOCommand.h>
40
41 #define super OSObject
42 OSDefineMetaClassAndStructors(IOCommand, OSObject);
43
44
45 //--------------------------------------------------------------------------
46 // init - initialize our data structures
47 //--------------------------------------------------------------------------
48
49 bool
init(void)50 IOCommand::init(void)
51 {
52 if (super::init()) {
53 queue_init(&fCommandChain);
54 return true;
55 } else {
56 return false;
57 }
58 }
59