projects / apple / xnu.git / blame
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|---|---|---|
| 55e303ae A |
1 | /* |
| 2 | * Copyright (c) 2001-2002 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 37839358 A |
5 | * |
| 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. | |
| 11 | * | |
| 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 | |
| 55e303ae A |
14 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 15 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 37839358 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. | |
| 19 | * | |
| 55e303ae A |
20 | * @APPLE_LICENSE_HEADER_END@ |
| 21 | */ | |
| 22 | ||
| 23 | #ifndef _IOPMPOWERSTATEQUEUE_H_ | |
| 24 | #define _IOPMPOWERSTATEQUEUE_H_ | |
| 25 | ||
| 26 | #include <IOKit/IOWorkLoop.h> | |
| 27 | #include <IOKit/IOEventSource.h> | |
| 28 | #include <IOKit/IOService.h> | |
| 29 | extern "C" { | |
| 30 | #include <kern/queue.h> | |
| 31 | } | |
| 32 | ||
| 33 | class IOPMPowerStateQueue : public IOEventSource | |
| 34 | { | |
| 35 | OSDeclareDefaultStructors(IOPMPowerStateQueue); | |
| 36 | ||
| 37 | private: | |
| 38 | enum { | |
| 39 | kUnIdle = 0 | |
| 40 | }; | |
| 41 | ||
| 42 | // Queue of requested states | |
| 43 | struct PowerChangeEntry | |
| 44 | { | |
| 45 | void *next; | |
| 46 | UInt16 actionType; | |
| 47 | UInt16 state; | |
| 48 | IOService *target; | |
| 49 | }; | |
| 50 | ||
| 51 | void *changes; | |
| 52 | ||
| 53 | protected: | |
| 54 | virtual bool checkForWork(void); | |
| 55 | ||
| 56 | public: | |
| 57 | //typedef void (*Action)(IOService *target, unsigned long state); | |
| 58 | ||
| 59 | virtual bool init(OSObject *owner, Action action = 0); | |
| 60 | ||
| 61 | // static initialiser | |
| 62 | static IOPMPowerStateQueue *PMPowerStateQueue(OSObject *owner); | |
| 63 | ||
| 64 | // Enqueues an activityTickle request to be executed on the workloop | |
| 65 | virtual bool unIdleOccurred(IOService *, unsigned long); | |
| 66 | }; | |
| 67 | ||
| 68 | #endif /* _IOPMPOWERSTATEQUEUE_H_ */ | |
| 4a249263 | 69 |