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Diffstat (limited to 'include/mach/thread_switch.h')
| -rw-r--r-- | include/mach/thread_switch.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/include/mach/thread_switch.h b/include/mach/thread_switch.h new file mode 100644 index 00000000..5235b874 --- /dev/null +++ b/include/mach/thread_switch.h @@ -0,0 +1,40 @@ +/* + * 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. + */ + +#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_ */ |