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| Source at commit 1808 created 12 years 4 months ago. By blackosx, Revise layout of package installer 'Welcome' file so it looks cleaner. Change the copyright notice to begin from 2009 as seen in the Chameleon 2.0 r431 installer. Should this date be set earlier? | |
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| 1 | /*␊ |
| 2 | * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.␊ |
| 3 | *␊ |
| 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@␊ |
| 5 | * ␊ |
| 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.␊ |
| 14 | * ␊ |
| 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␊ |
| 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
| 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.␊ |
| 25 | * ␊ |
| 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@␊ |
| 27 | */␊ |
| 28 | /*␊ |
| 29 | * Copyright (c) 1998 Apple Computer, Inc. All rights reserved. ␊ |
| 30 | *␊ |
| 31 | * HISTORY␊ |
| 32 | *␊ |
| 33 | */␊ |
| 34 | ␊ |
| 35 | /*␊ |
| 36 | * Multiprocessor locks used within the shared memory area between the␊ |
| 37 | * kernel and event system. These must work in both user and kernel mode.␊ |
| 38 | * ␊ |
| 39 | * These routines are public, for the purpose of writing frame buffer device␊ |
| 40 | * drivers which handle their own cursors. Certain architectures define a␊ |
| 41 | * generic display class which handles cursor drawing and is subclassed by␊ |
| 42 | * driver writers. These drivers need not be concerned with the following␊ |
| 43 | * types and definitions.␊ |
| 44 | *␊ |
| 45 | * The ev_lock(), ev_unlock(), and ev_try_lock() functions are available only␊ |
| 46 | * to drivers built in or dynamically loaded into the kernel, and to DPS␊ |
| 47 | * drivers built in or dynamically loaded into the Window Server. They do not␊ |
| 48 | * exist in any shared library.␊ |
| 49 | *␊ |
| 50 | * --> They're now in IOKit user lib.␊ |
| 51 | */␊ |
| 52 | ␊ |
| 53 | #ifndef _IOKIT_IOSHAREDLOCK_H␊ |
| 54 | #define _IOKIT_IOSHAREDLOCK_H␊ |
| 55 | ␊ |
| 56 | #ifdef __cplusplus␊ |
| 57 | extern "C" {␊ |
| 58 | #endif␊ |
| 59 | ␊ |
| 60 | // should be 32 bytes on PPC␊ |
| 61 | typedef volatile int␉␉IOSharedLockData;␊ |
| 62 | typedef IOSharedLockData * IOSharedLock;␊ |
| 63 | ␊ |
| 64 | #define IOSpinLockInit(l)␉(*(l) = (IOSharedLockData)0)␊ |
| 65 | ␊ |
| 66 | ␊ |
| 67 | extern void IOSpinUnlock(IOSharedLock l);␊ |
| 68 | extern boolean_t IOTrySpinLock(IOSharedLock l);␊ |
| 69 | ␊ |
| 70 | /* exact same stuff & implementation */␊ |
| 71 | ␊ |
| 72 | typedef IOSharedLockData ␉ev_lock_data_t;␊ |
| 73 | typedef ev_lock_data_t␉ *␉ev_lock_t;␊ |
| 74 | ␊ |
| 75 | #define ev_init_lock(l)␉␉(*(l) = (ev_lock_data_t)0)␊ |
| 76 | // needs isync?␊ |
| 77 | //#define ev_is_locked(l)␉(*(l) != (ev_lock_data_t)0)␊ |
| 78 | ␊ |
| 79 | ␊ |
| 80 | extern void ev_unlock(ev_lock_t l);␊ |
| 81 | extern boolean_t ev_try_lock(ev_lock_t l);␊ |
| 82 | ␊ |
| 83 | #ifdef __cplusplus␊ |
| 84 | }␊ |
| 85 | #endif␊ |
| 86 | #endif /* ! _IOKIT_IOSHAREDLOCK_H */␊ |
| 87 | |
