| 1 | /*␊ |
| 2 | * Copyright (c) 1998-2007 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 | ␊ |
| 23 | #ifndef _IOFWSYNCER_H␊ |
| 24 | #define _IOFWSYNCER_H␊ |
| 25 | ␊ |
| 26 | #include <libkern/c++/OSObject.h>␊ |
| 27 | #include <IOKit/IOTypes.h>␊ |
| 28 | #include <IOKit/IOLocks.h>␊ |
| 29 | ␊ |
| 30 | class IOFWSyncer : public OSObject␊ |
| 31 | {␊ |
| 32 | OSDeclareDefaultStructors(IOFWSyncer)␊ |
| 33 | ␊ |
| 34 | private:␊ |
| 35 | // The spin lock that is used to guard the 'threadMustStop' variable. ␊ |
| 36 | IOSimpleLock *guardLock;␊ |
| 37 | volatile bool threadMustStop;␊ |
| 38 | IOReturn fResult;␊ |
| 39 | virtual void free();␊ |
| 40 | virtual void privateSignal();␊ |
| 41 | ␊ |
| 42 | public:␊ |
| 43 | ␊ |
| 44 | static IOFWSyncer * create(bool twoRetains = true);␊ |
| 45 | ␊ |
| 46 | virtual bool init(bool twoRetains);␊ |
| 47 | virtual void reinit();␊ |
| 48 | virtual IOReturn wait(bool autoRelease = true);␊ |
| 49 | virtual void signal(IOReturn res = kIOReturnSuccess,␊ |
| 50 | ␉␉␉␉␉bool autoRelease = true);␊ |
| 51 | };␊ |
| 52 | ␊ |
| 53 | #endif /* !_IOFWSYNCER */␊ |
| 54 | ␊ |
| 55 | |
