/* * Copyright (c) 2001-2002 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * The contents of this file constitute Original Code as defined in and * are subject to the Apple Public Source License Version 1.1 (the * "License"). You may not use this file except in compliance with the * License. Please obtain a copy of the License at * http://www.apple.com/publicsource and read it before using this file. * * This Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ #ifndef _IOPMPOWERSTATEQUEUE_H_ #define _IOPMPOWERSTATEQUEUE_H_ #include <IOKit/IOWorkLoop.h> #include <IOKit/IOEventSource.h> #include <IOKit/IOService.h> extern "C" { #include <kern/queue.h> } class IOPMPowerStateQueue : public IOEventSource { OSDeclareDefaultStructors(IOPMPowerStateQueue); private: enum { kUnIdle = 0 }; // Queue of requested states struct PowerChangeEntry { void *next; UInt16 actionType; UInt16 state; IOService *target; }; void *changes; protected: virtual bool checkForWork(void); public: //typedef void (*Action)(IOService *target, unsigned long state); virtual bool init(OSObject *owner, Action action = 0); // static initialiser static IOPMPowerStateQueue *PMPowerStateQueue(OSObject *owner); // Enqueues an activityTickle request to be executed on the workloop virtual bool unIdleOccurred(IOService *, unsigned long); }; #endif /* _IOPMPOWERSTATEQUEUE_H_ */