iokit/IOKit/pwr_mgt/IOPMPowerSourceList.h

   1 /*
   2  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   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
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  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  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 #include <libkern/c++/OSObject.h>
  23 #include <IOKit/IOReturn.h>
  24
  25 class IOPMPowerSource;
  26
  27 class IOPMPowerSourceList : public OSObject
  28 {
  29 OSDeclareDefaultStructors(IOPMPowerSourceList)
  30
  31 private:
  32
  33 IOPMPowerSource * firstItem;            // pointer to first power source in list
  34 unsigned long   length;                 // how many power sources are in the list
  35
  36
  37 public:
  38 void initialize ( void );
  39
  40 IOReturn addToList ( IOPMPowerSource *   newPowerSource );
  41
  42 IOPMPowerSource * firstInList ( void );
  43
  44 IOPMPowerSource * nextInList ( IOPMPowerSource * currentItem );
  45
  46 unsigned long numberOfItems ( void );
  47
  48 IOReturn removeFromList ( IOPMPowerSource * theItem );
  49
  50 void free ( void );
  51 };
  52