xnu-4570.1.46.tar.gz

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

diff --git a/osfmk/mach/vm_purgable.h b/osfmk/mach/vm_purgable.h
index 2d8ca30389061d8d6272ca9b421804919839febc..4ae0892b8ab71a4727e7f452e13742ac7c9c94dd 100644 (file)
--- a/osfmk/mach/vm_purgable.h
+++ b/osfmk/mach/vm_purgable.h
@@ -58,6 +58,33 @@ typedef int  vm_purgable_t;
 #define VM_PURGABLE_SET_STATE  ((vm_purgable_t) 0)     /* set state of purgeable object */
 #define VM_PURGABLE_GET_STATE  ((vm_purgable_t) 1)     /* get state of purgeable object */
 #define VM_PURGABLE_PURGE_ALL  ((vm_purgable_t) 2)     /* purge all volatile objects now */
+#define VM_PURGABLE_SET_STATE_FROM_KERNEL ((vm_purgable_t) 3) /* set state from kernel */
+
+/*
+ * Purgeable state:
+ *
+ *  31 15 14 13 12 11 10 8 7 6 5 4 3 2 1 0
+ * +-----+--+-----+--+----+-+-+---+---+---+
+ * |     |NA|DEBUG|  | GRP| |B|ORD|   |STA|
+ * +-----+--+-----+--+----+-+-+---+---+---+
+ * " ": unused (i.e. reserved)
+ * STA: purgeable state
+ *     see: VM_PURGABLE_NONVOLATILE=0 to VM_PURGABLE_DENY=3
+ * ORD: order
+ *     see:VM_VOLATILE_ORDER_*
+ * B: behavior
+ *     see: VM_PURGABLE_BEHAVIOR_*
+ * GRP: group
+ *     see: VM_VOLATILE_GROUP_*
+ * DEBUG: debug
+ *     see: VM_PURGABLE_DEBUG_*
+ * NA: no aging
+ *     see: VM_PURGABLE_NO_AGING*
+ */
+
+#define VM_PURGABLE_NO_AGING_SHIFT     16
+#define VM_PURGABLE_NO_AGING_MASK      (0x1 << VM_PURGABLE_NO_AGING_SHIFT)
+#define VM_PURGABLE_NO_AGING           (0x1 << VM_PURGABLE_NO_AGING_SHIFT)
 
 #define VM_PURGABLE_DEBUG_SHIFT        12
 #define VM_PURGABLE_DEBUG_MASK (0x3 << VM_PURGABLE_DEBUG_SHIFT)
@@ -71,7 +98,7 @@ typedef int   vm_purgable_t;
  */
 #define VM_VOLATILE_GROUP_SHIFT                8
 #define VM_VOLATILE_GROUP_MASK         (7 << VM_VOLATILE_GROUP_SHIFT)
-#define VM_VOLATILE_GROUP_DEFAULT   VM_VOLATILE_GROUP_7
+#define VM_VOLATILE_GROUP_DEFAULT   VM_VOLATILE_GROUP_0
 
 #define VM_VOLATILE_GROUP_0                    (0 << VM_VOLATILE_GROUP_SHIFT)
 #define VM_VOLATILE_GROUP_1                    (1 << VM_VOLATILE_GROUP_SHIFT)
@@ -122,13 +149,14 @@ typedef int       vm_purgable_t;
 
 #define VM_PURGABLE_NONVOLATILE        0               /* purgeable object is non-volatile */
 #define VM_PURGABLE_VOLATILE   1               /* purgeable object is volatile */
-#define VM_PURGABLE_EMPTY              2               /* purgeable object is volatile and empty */
-#define VM_PURGABLE_DENY               3               /* (mark) object not purgeable */
+#define VM_PURGABLE_EMPTY      2               /* purgeable object is volatile and empty */
+#define VM_PURGABLE_DENY       3               /* (mark) object not purgeable */
 
 #define VM_PURGABLE_ALL_MASKS  (VM_PURGABLE_STATE_MASK | \
                                 VM_VOLATILE_ORDER_MASK | \
                                 VM_PURGABLE_ORDERING_MASK | \
                                 VM_PURGABLE_BEHAVIOR_MASK | \
                                 VM_VOLATILE_GROUP_MASK | \
-                                VM_PURGABLE_DEBUG_MASK)
+                                VM_PURGABLE_DEBUG_MASK | \
+                                VM_PURGABLE_NO_AGING_MASK)
 #endif /* _MACH_VM_PURGABLE_H_ */