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- /*
- * 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_ */
-