xnu-6153.101.6.tar.gz

[apple/xnu.git] / osfmk / mach / thread_switch.h

diff --git a/osfmk/mach/thread_switch.h b/osfmk/mach/thread_switch.h
index eb675e284457902656f00560414f55d314626ac2..17cccd1b2eea1a80d000bdbe236efba79c7dcf8e 100644 (file)
--- a/osfmk/mach/thread_switch.h
+++ b/osfmk/mach/thread_switch.h
@@ -1,17 +1,20 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  *
- * @APPLE_LICENSE_HEADER_START@
- * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
- * 
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- * 
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
@@ -19,60 +22,63 @@
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.
- * 
- * @APPLE_LICENSE_HEADER_END@
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*
  * @OSF_COPYRIGHT@
  */
-/* 
+/*
  * 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_
+#ifndef _MACH_THREAD_SWITCH_H_
+#define _MACH_THREAD_SWITCH_H_
 
 #include <mach/mach_types.h>
 #include <mach/kern_return.h>
 #include <mach/message.h>
+#include <mach/mach_traps.h>
 
 /*
  *     Constant definitions for thread_switch trap.
  */
 
-#define        SWITCH_OPTION_NONE                      0
-#define SWITCH_OPTION_DEPRESS          1
-#define SWITCH_OPTION_WAIT                     2
+#define SWITCH_OPTION_NONE                      0
+#define SWITCH_OPTION_DEPRESS           1
+#define SWITCH_OPTION_WAIT                      2
+#ifdef PRIVATE
+/* Workqueue should not consider thread blocked, and option_time is in us */
+#define SWITCH_OPTION_DISPATCH_CONTENTION       3
+/* Handoff to lock owner and temporarily grant matching IO throttling policy */
+#define SWITCH_OPTION_OSLOCK_DEPRESS    4
+#define SWITCH_OPTION_OSLOCK_WAIT       5
+#endif /* PRIVATE */
 
-#define valid_switch_option(opt)       (0 <= (opt) && (opt) <= 2)
+#define valid_switch_option(opt)        (0 <= (opt) && (opt) <= 5)
 
-extern kern_return_t   thread_switch(
-                                                       mach_port_name_t        thread_name,
-                                                       int                                     option,
-                                                       mach_msg_timeout_t      option_time);
-     
-#endif /* _MACH_THREAD_SWITCH_H_ */
+#endif  /* _MACH_THREAD_SWITCH_H_ */