projects / apple / xnu.git / blame
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|---|---|---|
| 1c79356b A |
1 | /* |
| 2 | * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 2d21ac55 | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| 1c79356b | 5 | * |
| 2d21ac55 A |
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. | |
| 8f6c56a5 | 14 | * |
| 2d21ac55 A |
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 | |
| 8f6c56a5 A |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 2d21ac55 A |
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. | |
| 8f6c56a5 | 25 | * |
| 2d21ac55 | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| 1c79356b A |
27 | */ |
| 28 | #ifndef _IOSYNCER_H | |
| 29 | #define _IOSYNCER_H | |
| 30 | ||
| 31 | #include <libkern/c++/OSObject.h> | |
| 32 | #include <IOKit/IOTypes.h> | |
| 33 | #include <IOKit/IOLocks.h> | |
| 34 | ||
| 35 | class IOSyncer : public OSObject | |
| 36 | { | |
| 37 | OSDeclareDefaultStructors(IOSyncer) | |
| 38 | ||
| 39 | private: | |
| 40 | // The spin lock that is used to guard the 'threadMustStop' variable. | |
| 41 | IOSimpleLock *guardLock; | |
| 42 | volatile bool threadMustStop; | |
| 43 | IOReturn fResult; | |
| 44 | virtual void free(); | |
| 45 | virtual void privateSignal(); | |
| 46 | ||
| 47 | public: | |
| 48 | ||
| 2d21ac55 | 49 | static IOSyncer * create(bool twoRetains = true) |
| b0d623f7 | 50 | APPLE_KEXT_DEPRECATED; |
| 1c79356b | 51 | |
| 2d21ac55 | 52 | virtual bool init(bool twoRetains) |
| b0d623f7 | 53 | APPLE_KEXT_DEPRECATED; |
| 2d21ac55 | 54 | virtual void reinit() |
| b0d623f7 | 55 | APPLE_KEXT_DEPRECATED; |
| 2d21ac55 | 56 | virtual IOReturn wait(bool autoRelease = true) |
| b0d623f7 | 57 | APPLE_KEXT_DEPRECATED; |
| 1c79356b | 58 | virtual void signal(IOReturn res = kIOReturnSuccess, |
| 2d21ac55 | 59 | bool autoRelease = true) |
| b0d623f7 | 60 | APPLE_KEXT_DEPRECATED; |
| 1c79356b A |
61 | }; |
| 62 | ||
| 63 | #endif /* !_IOSYNCER */ | |
| 64 |