xnu-2782.40.9.tar.gz

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

diff --git a/osfmk/mach/vm_behavior.h b/osfmk/mach/vm_behavior.h
index 6b2eee6d680c4799d7283aba4f3b783e86fa8c4d..ec0ee729ccdeb750c57b6307271150391c0caef8 100644 (file)
--- a/osfmk/mach/vm_behavior.h
+++ b/osfmk/mach/vm_behavior.h
@@ -1,23 +1,29 @@
 /*
  * Copyright (c) 2000-2002 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@
@@ -48,11 +54,25 @@ typedef int         vm_behavior_t;
  */
 
 
+/*
+ * The following behaviors affect the memory region's future behavior
+ * and are stored in the VM map entry data structure.
+ */
 #define VM_BEHAVIOR_DEFAULT    ((vm_behavior_t) 0)     /* default */
 #define VM_BEHAVIOR_RANDOM     ((vm_behavior_t) 1)     /* random */
 #define VM_BEHAVIOR_SEQUENTIAL ((vm_behavior_t) 2)     /* forward sequential */
 #define VM_BEHAVIOR_RSEQNTL    ((vm_behavior_t) 3)     /* reverse sequential */
+
+/*
+ * The following "behaviors" affect the memory region only at the time of the
+ * call and are not stored in the VM map entry.
+ */
 #define VM_BEHAVIOR_WILLNEED   ((vm_behavior_t) 4)     /* will need in near future */
 #define VM_BEHAVIOR_DONTNEED   ((vm_behavior_t) 5)     /* dont need in near future */
+#define VM_BEHAVIOR_FREE       ((vm_behavior_t) 6)     /* free memory without write-back */
+#define VM_BEHAVIOR_ZERO_WIRED_PAGES   ((vm_behavior_t) 7)     /* zero out the wired pages of an entry if it is being deleted without unwiring them first */
+#define VM_BEHAVIOR_REUSABLE   ((vm_behavior_t) 8)
+#define VM_BEHAVIOR_REUSE      ((vm_behavior_t) 9)
+#define VM_BEHAVIOR_CAN_REUSE  ((vm_behavior_t) 10)
 
 #endif /*_MACH_VM_BEHAVIOR_H_*/