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1 | /* |
2 | * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved. | |
3 | * | |
6601e61a | 4 | * @APPLE_LICENSE_HEADER_START@ |
1c79356b | 5 | * |
6601e61a A |
6 | * The contents of this file constitute Original Code as defined in and |
7 | * are subject to the Apple Public Source License Version 1.1 (the | |
8 | * "License"). You may not use this file except in compliance with the | |
9 | * License. Please obtain a copy of the License at | |
10 | * http://www.apple.com/publicsource and read it before using this file. | |
8f6c56a5 | 11 | * |
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12 | * This Original Code and all software distributed under the License are |
13 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
8f6c56a5 A |
14 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
15 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
6601e61a A |
16 | * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the |
17 | * License for the specific language governing rights and limitations | |
18 | * under the License. | |
8f6c56a5 | 19 | * |
6601e61a | 20 | * @APPLE_LICENSE_HEADER_END@ |
1c79356b A |
21 | */ |
22 | #include <libkern/c++/OSObject.h> | |
0c530ab8 | 23 | #include <IOKit/IOLocks.h> |
1c79356b A |
24 | #include <IOKit/IOReturn.h> |
25 | ||
26 | class IOPMinformee; | |
27 | class IOService; | |
28 | ||
29 | class IOPMinformeeList : public OSObject | |
30 | { | |
31 | OSDeclareDefaultStructors(IOPMinformeeList) | |
32 | ||
33 | private: | |
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34 | IOPMinformee *firstItem; // pointer to first informee in the list |
35 | unsigned long length; // how many informees are in the list | |
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36 | |
37 | public: | |
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38 | void initialize ( void ); |
39 | void free ( void ); | |
1c79356b | 40 | |
0c530ab8 | 41 | unsigned long numberOfItems ( void ); |
1c79356b | 42 | |
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43 | IOReturn addToList ( IOPMinformee * newInformee ); |
44 | IOReturn removeFromList ( IOService * theItem ); | |
45 | ||
46 | IOPMinformee * firstInList ( void ); | |
47 | IOPMinformee * nextInList ( IOPMinformee * currentItem ); | |
48 | ||
49 | IOPMinformee * findItem ( IOService * driverOrChild ); | |
1c79356b | 50 | |
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51 | // This lock must be held while modifying list or length |
52 | static IORecursiveLock * getSharedRecursiveLock( void ); | |
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53 | }; |
54 |