darling-xnu/iokit/Kernel/IOPMPowerStateQueue.h
2023-05-16 21:41:14 -07:00

64 lines
2.2 KiB
C++

/*
* Copyright (c) 2001-2019 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
* 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#ifndef _IOPMPOWERSTATEQUEUE_H_
#define _IOPMPOWERSTATEQUEUE_H_
#include <IOKit/IOEventSource.h>
#include <IOKit/IOLocks.h>
#include <kern/queue.h>
typedef void (*IOPMPowerStateQueueAction)(OSObject *, uint32_t event, void *, uint64_t);
class IOPMPowerStateQueue : public IOEventSource
{
OSDeclareDefaultStructors(IOPMPowerStateQueue);
private:
struct PowerEventEntry {
queue_chain_t chain;
uint32_t eventType;
void * arg0;
uint64_t arg1;
};
queue_head_t queueHead;
IOLock * queueLock;
protected:
virtual bool checkForWork( void ) APPLE_KEXT_OVERRIDE;
virtual bool init( OSObject * owner, Action action ) APPLE_KEXT_OVERRIDE;
public:
static IOPMPowerStateQueue * PMPowerStateQueue( OSObject * owner, Action action );
bool submitPowerEvent( uint32_t eventType, void * arg0 = NULL, uint64_t arg1 = 0 );
};
#endif /* _IOPMPOWERSTATEQUEUE_H_ */