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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: options.h,v $
* Revision 2.8 91/05/14 17:58:35 mrt
* Correcting copyright
*
* Revision 2.7 91/02/14 14:21:03 mrt
* Added new Mach copyright
* [91/02/13 12:41:31 mrt]
*
* Revision 2.6 90/09/09 14:35:04 rpd
* Remove special option , debug_mutex and thread_calls.
* [90/08/24 rwd]
*
* Revision 2.5 90/06/02 15:14:14 rpd
* Removed RCS Source, Header lines.
* [90/05/03 00:07:27 rpd]
*
* Revision 2.4 90/03/14 21:12:15 rwd
* Added new option:
* WAIT_DEBUG: keep track of who a blocked thread is
* waiting for.
* [90/03/01 rwd]
*
* Revision 2.3 90/01/19 14:37:25 rwd
* New option:
* THREAD_CALLS: cthread_* version of thread_* calls.
* [90/01/03 rwd]
*
* Revision 2.2 89/12/08 19:54:09 rwd
* Added code:
* MUTEX_SPECIAL: Have extra kernel threads available for
* special mutexes to avoid deadlocks
* Removed options:
* MSGOPT, RECEIVE_YIELD
* [89/11/25 rwd]
* Added option:
* MUTEX_SPECIAL: Allow special mutexes which will
* garuntee the resulting threads runs
* on a mutex_unlock
* [89/11/21 rwd]
* Options added are:
* STATISTICS: collect [kernel/c]thread state stats.
* SPIN_RESCHED: call swtch_pri(0) when spin will block.
* MSGOPT: try to minimize message sends
* CHECK_STATUS: check status of mach calls
* RECEIVE_YIELD: yield thread if no waiting threads after
* cthread_msg_receive
* RED_ZONE: make redzone at end of stacks
* DEBUG_MUTEX: in conjunction with same in cthreads.h
* use slow mutex with held=cproc_self().
* [89/11/13 rwd]
* Added copyright. Removed all options.
* [89/10/23 rwd]
*
*/
/*
* options.h
*/
/*#define STATISTICS*/
#define SPIN_RESCHED
/*#define CHECK_STATUS*/
/*#define RED_ZONE*/
#define WAIT_DEBUG
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