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thread_switch.h
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C/C++ Source or Header
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1995-02-14
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2KB
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73 lines
/*
* Mach Operating System
* Copyright (c) 1991,1990,1989 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* HISTORY
* $Log: thread_switch.h,v $
* Revision 2.5 93/01/14 17:48:14 danner
* Standardized include symbol usage.
* [92/06/10 pds]
*
* Revision 2.4 91/05/14 17:01:33 mrt
* Correcting copyright
*
* Revision 2.3 91/02/05 17:36:45 mrt
* Changed to new Mach copyright
* [91/02/01 17:22:02 mrt]
*
* Revision 2.2 90/06/02 15:00:19 rpd
* Created for new host/processor technology.
* [90/03/26 23:51:49 rpd]
*
* Merge to X96
* [89/08/02 23:12:52 dlb]
*
* Created.
* [89/07/25 19:05:41 dlb]
*
* Revision 2.3 89/10/15 02:06:04 rpd
* Minor cleanups.
*
* Revision 2.2 89/10/11 14:41:47 dlb
* Merge.
* [89/09/01 17:57:58 dlb]
*
*/
#ifndef _MACH_THREAD_SWITCH_H_
#define _MACH_THREAD_SWITCH_H_
/*
* Constant definitions for thread_switch trap.
*/
#define SWITCH_OPTION_NONE 0
#define SWITCH_OPTION_DEPRESS 1
#define SWITCH_OPTION_WAIT 2
#define valid_switch_option(opt) ((0 <= (opt)) && ((opt) <= 2))
#endif /* _MACH_THREAD_SWITCH_H_ */