/*
* Copyright (c) 1998-2019 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
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*/
#include <libkern/c++/OSObject.h>
#include <IOKit/IOLocks.h>
#include <IOKit/IOReturn.h>
class IOPMinformee;
class IOService;
extern uint32_t gSleepAckTimeout;
class IOPMinformeeList : public OSObject
{
OSDeclareDefaultStructors(IOPMinformeeList);
friend class IOPMinformee;
private:
// pointer to first informee in the list
IOPMinformee *firstItem;
// how many informees are in the list
unsigned long length;
public:
void initialize( void );
void free( void ) APPLE_KEXT_OVERRIDE;
unsigned long numberOfItems( void );
LIBKERN_RETURNS_NOT_RETAINED IOPMinformee *appendNewInformee( IOService * newObject );
// OBSOLETE
// do not use addToList(); Use appendNewInformee() instead
IOReturn addToList(LIBKERN_CONSUMED IOPMinformee * newInformee );
IOReturn removeFromList( IOService * theItem );
LIBKERN_RETURNS_NOT_RETAINED IOPMinformee * firstInList( void );
LIBKERN_RETURNS_NOT_RETAINED IOPMinformee * nextInList( IOPMinformee * currentItem );
LIBKERN_RETURNS_NOT_RETAINED IOPMinformee * findItem( IOService * driverOrChild );
// This lock must be held while modifying list or length
static IORecursiveLock * getSharedRecursiveLock( void );
};