1 /* 2 * Copyright (c) 1998-2019 Apple 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 #include <libkern/c++/OSObject.h> 29 #include <IOKit/IOReturn.h> 30 31 class IOPMPowerSource; 32 33 class IOPMPowerSourceList : public OSObject 34 { 35 OSDeclareDefaultStructors(IOPMPowerSourceList); 36 private: 37 // pointer to first power source in list 38 IOPMPowerSource *firstItem; 39 40 // how many power sources are in the list 41 unsigned long length; 42 43 public: 44 void initialize(void); 45 void free(void) APPLE_KEXT_OVERRIDE; 46 47 unsigned long numberOfItems(void); 48 IOReturn addToList(IOPMPowerSource *newPowerSource); 49 IOReturn removeFromList(IOPMPowerSource *theItem); 50 51 LIBKERN_RETURNS_NOT_RETAINED IOPMPowerSource *firstInList(void); 52 LIBKERN_RETURNS_NOT_RETAINED IOPMPowerSource *nextInList(IOPMPowerSource *currentItem); 53 }; 54