xnu-4570.71.2.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 e03383287a87604ea29d26374eeb77a5eb744145..abce09f6e145d5ad07798dd24aebb77f251de79e 100644 (file)
--- a/osfmk/mach/thread_switch.h
+++ b/osfmk/mach/thread_switch.h
@@ -1,23 +1,29 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * 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. 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.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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@
@@ -56,6 +62,7 @@
 #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.
@@ -64,12 +71,14 @@
 #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_ */