1*d8b80295SApple OSS Distributions /*
2*d8b80295SApple OSS Distributions * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3*d8b80295SApple OSS Distributions *
4*d8b80295SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*d8b80295SApple OSS Distributions *
6*d8b80295SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*d8b80295SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*d8b80295SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*d8b80295SApple OSS Distributions * compliance with the License. The rights granted to you under the License
10*d8b80295SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of,
11*d8b80295SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to
12*d8b80295SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any
13*d8b80295SApple OSS Distributions * terms of an Apple operating system software license agreement.
14*d8b80295SApple OSS Distributions *
15*d8b80295SApple OSS Distributions * Please obtain a copy of the License at
16*d8b80295SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*d8b80295SApple OSS Distributions *
18*d8b80295SApple OSS Distributions * The Original Code and all software distributed under the License are
19*d8b80295SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*d8b80295SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*d8b80295SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*d8b80295SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*d8b80295SApple OSS Distributions * Please see the License for the specific language governing rights and
24*d8b80295SApple OSS Distributions * limitations under the License.
25*d8b80295SApple OSS Distributions *
26*d8b80295SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*d8b80295SApple OSS Distributions */
28*d8b80295SApple OSS Distributions
29*d8b80295SApple OSS Distributions /*
30*d8b80295SApple OSS Distributions *
31*d8b80295SApple OSS Distributions * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
32*d8b80295SApple OSS Distributions *
33*d8b80295SApple OSS Distributions * HISTORY
34*d8b80295SApple OSS Distributions *
35*d8b80295SApple OSS Distributions * 11/13/2000 CJS Created IOCommand class and implementation
36*d8b80295SApple OSS Distributions *
37*d8b80295SApple OSS Distributions */
38*d8b80295SApple OSS Distributions
39*d8b80295SApple OSS Distributions #include <IOKit/IOCommand.h>
40*d8b80295SApple OSS Distributions
41*d8b80295SApple OSS Distributions #define super OSObject
42*d8b80295SApple OSS Distributions OSDefineMetaClassAndStructors(IOCommand, OSObject);
43*d8b80295SApple OSS Distributions
44*d8b80295SApple OSS Distributions
45*d8b80295SApple OSS Distributions //--------------------------------------------------------------------------
46*d8b80295SApple OSS Distributions // init - initialize our data structures
47*d8b80295SApple OSS Distributions //--------------------------------------------------------------------------
48*d8b80295SApple OSS Distributions
49*d8b80295SApple OSS Distributions bool
init(void)50*d8b80295SApple OSS Distributions IOCommand::init(void)
51*d8b80295SApple OSS Distributions {
52*d8b80295SApple OSS Distributions if (super::init()) {
53*d8b80295SApple OSS Distributions queue_init(&fCommandChain);
54*d8b80295SApple OSS Distributions return true;
55*d8b80295SApple OSS Distributions } else {
56*d8b80295SApple OSS Distributions return false;
57*d8b80295SApple OSS Distributions }
58*d8b80295SApple OSS Distributions }
59