xnu-6153.11.26.tar.gz

[apple/xnu.git] / osfmk / vm / vm_compressor_pager.h

diff --git a/osfmk/vm/vm_compressor_pager.h b/osfmk/vm/vm_compressor_pager.h
index 6016888e59df17ead922c438494c064ee800ddd7..26ace8f154c101d2de8061b4da32ecdea83ea16d 100644 (file)
--- a/osfmk/vm/vm_compressor_pager.h
+++ b/osfmk/vm/vm_compressor_pager.h
@@ -2,7 +2,7 @@
  * Copyright (c) 2013 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * Copyright (c) 2013 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@

- * 
+ *

  * 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
  * 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


@@ -11,10 +11,10 @@
  * 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.
  * 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.
  * 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,
  * 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,


@@ -22,11 +22,11 @@
  * 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.
  * 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_OSREFERENCE_LICENSE_HEADER_END@
  */
 
  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 

-#ifdef XNU_KERNEL_PRIVATE
+#ifdef  XNU_KERNEL_PRIVATE

 
 #ifndef _VM_VM_COMPRESSOR_PAGER_H_
 #define _VM_VM_COMPRESSOR_PAGER_H_
 
 #ifndef _VM_VM_COMPRESSOR_PAGER_H_
 #define _VM_VM_COMPRESSOR_PAGER_H_


@@ -36,94 +36,97 @@
 #include <vm/vm_external.h>
 
 extern kern_return_t vm_compressor_pager_put(
 #include <vm/vm_external.h>
 
 extern kern_return_t vm_compressor_pager_put(

-       memory_object_t                 mem_obj,
-       memory_object_offset_t          offset,
-       ppnum_t                         ppnum,
-       void                            **current_chead,
-       char                            *scratch_buf,
-       int                             *compressed_count_delta_p);
+       memory_object_t                 mem_obj,
+       memory_object_offset_t          offset,
+       ppnum_t                         ppnum,
+       void                            **current_chead,
+       char                            *scratch_buf,
+       int                             *compressed_count_delta_p);

 extern kern_return_t vm_compressor_pager_get(
 extern kern_return_t vm_compressor_pager_get(

-       memory_object_t         mem_obj,
-       memory_object_offset_t  offset,
-       ppnum_t                 ppnum,
-       int                     *my_fault_type,
-       int                     flags,
-       int                     *compressed_count_delta_p);
+       memory_object_t         mem_obj,
+       memory_object_offset_t  offset,
+       ppnum_t                 ppnum,
+       int                     *my_fault_type,
+       int                     flags,
+       int                     *compressed_count_delta_p);

 
 

-#define        C_DONT_BLOCK            0x01
-#define C_KEEP                 0x02
+#define C_DONT_BLOCK            0x01
+#define C_KEEP                  0x02
+#define C_KDP                   0x04

 
 extern unsigned int vm_compressor_pager_state_clr(
 
 extern unsigned int vm_compressor_pager_state_clr(

-       memory_object_t         mem_obj,
-       memory_object_offset_t  offset);
+       memory_object_t         mem_obj,
+       memory_object_offset_t  offset);

 extern vm_external_state_t vm_compressor_pager_state_get(
 extern vm_external_state_t vm_compressor_pager_state_get(

-       memory_object_t         mem_obj,
-       memory_object_offset_t  offset);
+       memory_object_t         mem_obj,
+       memory_object_offset_t  offset);

 
 

-#define VM_COMPRESSOR_PAGER_STATE_GET(object, offset)                  \
-       (((COMPRESSED_PAGER_IS_ACTIVE ||                                \
-          DEFAULT_FREEZER_COMPRESSED_PAGER_IS_ACTIVE) &&               \
-         (object)->internal &&                                         \
-         (object)->pager != NULL &&                                    \
-         !(object)->terminating &&                                     \
-         (object)->alive)                                              \
-        ? vm_compressor_pager_state_get((object)->pager,               \
-                                        (offset) + (object)->paging_offset) \
+#define VM_COMPRESSOR_PAGER_STATE_GET(object, offset)                   \
+       (((object)->internal &&                                 \
+         (object)->pager != NULL &&                                    \
+         !(object)->terminating &&                                     \
+         (object)->alive)                                              \
+        ? vm_compressor_pager_state_get((object)->pager,               \
+                                        (offset) + (object)->paging_offset) \

         : VM_EXTERNAL_STATE_UNKNOWN)
 
         : VM_EXTERNAL_STATE_UNKNOWN)
 

-#define VM_COMPRESSOR_PAGER_STATE_CLR(object, offset)                  \
-       MACRO_BEGIN                                                     \
-       if ((COMPRESSED_PAGER_IS_ACTIVE ||                              \
-            DEFAULT_FREEZER_COMPRESSED_PAGER_IS_ACTIVE) &&             \
-           (object)->internal &&                                       \
-           (object)->pager != NULL &&                                  \
-           !(object)->terminating &&                                   \
-           (object)->alive) {                                          \
-               int _num_pages_cleared;                                 \
-               _num_pages_cleared =                                    \
-                       vm_compressor_pager_state_clr(                  \
-                               (object)->pager,                        \
-                               (offset) + (object)->paging_offset);    \
-               if (_num_pages_cleared) {                               \
-                       vm_compressor_pager_count((object)->pager,      \
-                                                 -_num_pages_cleared,  \
-                                                 FALSE, /* shared */   \
-                                                 (object));            \
-               }                                                       \
-               if (_num_pages_cleared &&                               \
-                   (object)->purgable != VM_PURGABLE_DENY &&           \
-                   (object)->vo_purgeable_owner != NULL) {             \
-                       /* less compressed purgeable pages */           \
-                       assert(_num_pages_cleared == 1);                \
-                       vm_purgeable_compressed_update(                 \
-                               (object),                               \
-                               -_num_pages_cleared);                   \
-               }                                                       \
-       }                                                               \
+#define VM_COMPRESSOR_PAGER_STATE_CLR(object, offset)                   \
+       MACRO_BEGIN                                                     \
+       if ((object)->internal &&                                       \
+           (object)->pager != NULL &&                                  \
+           !(object)->terminating &&                                   \
+           (object)->alive) {                                          \
+               int _num_pages_cleared;                                 \
+               _num_pages_cleared =                                    \
+                       vm_compressor_pager_state_clr(                  \
+                               (object)->pager,                        \
+                               (offset) + (object)->paging_offset);    \
+               if (_num_pages_cleared) {                               \
+                       vm_compressor_pager_count((object)->pager,      \
+                                                 -_num_pages_cleared,  \
+                                                 FALSE, /* shared */   \
+                                                 (object));            \
+               }                                                       \
+               if (_num_pages_cleared &&                               \
+                   ((object)->purgable != VM_PURGABLE_DENY ||          \
+                    (object)->vo_ledger_tag)) {                        \
+       /* less compressed purgeable/tagged pages */    \
+                       assert(_num_pages_cleared == 1);                \
+                       vm_object_owner_compressed_update(              \
+                               (object),                               \
+                               -_num_pages_cleared);                   \
+               }                                                       \
+       }                                                               \

        MACRO_END
 
 extern void vm_compressor_pager_transfer(
        MACRO_END
 
 extern void vm_compressor_pager_transfer(

-       memory_object_t         dst_mem_obj,
-       memory_object_offset_t  dst_offset,
-       memory_object_t         src_mem_obj,
-       memory_object_offset_t  src_offset);
+       memory_object_t         dst_mem_obj,
+       memory_object_offset_t  dst_offset,
+       memory_object_t         src_mem_obj,
+       memory_object_offset_t  src_offset);

 extern memory_object_offset_t vm_compressor_pager_next_compressed(
 extern memory_object_offset_t vm_compressor_pager_next_compressed(

-       memory_object_t         mem_obj,
-       memory_object_offset_t  offset);
+       memory_object_t         mem_obj,
+       memory_object_offset_t  offset);

 
 extern void vm_compressor_init(void);
 extern int vm_compressor_put(ppnum_t pn, int *slot, void **current_chead, char *scratch_buf);
 extern int vm_compressor_get(ppnum_t pn, int *slot, int flags);
 extern int vm_compressor_free(int *slot, int flags);
 extern unsigned int vm_compressor_pager_reap_pages(memory_object_t mem_obj, int flags);
 
 extern void vm_compressor_init(void);
 extern int vm_compressor_put(ppnum_t pn, int *slot, void **current_chead, char *scratch_buf);
 extern int vm_compressor_get(ppnum_t pn, int *slot, int flags);
 extern int vm_compressor_free(int *slot, int flags);
 extern unsigned int vm_compressor_pager_reap_pages(memory_object_t mem_obj, int flags);

-extern unsigned int vm_compressor_pager_get_slots_occupied(memory_object_t mem_obj);

 extern unsigned int vm_compressor_pager_get_count(memory_object_t mem_obj);
 extern void vm_compressor_pager_count(memory_object_t mem_obj,
 extern unsigned int vm_compressor_pager_get_count(memory_object_t mem_obj);
 extern void vm_compressor_pager_count(memory_object_t mem_obj,

-                                     int compressed_count_delta,
-                                     boolean_t shared_lock,
-                                     vm_object_t object);
-extern void vm_compressor_transfer(int *dst_slot_p, int        *src_slot_p);
+    int compressed_count_delta,
+    boolean_t shared_lock,
+    vm_object_t object);
+
+extern void vm_compressor_transfer(int *dst_slot_p, int *src_slot_p);
+
+#if CONFIG_FREEZE
+extern kern_return_t vm_compressor_pager_relocate(memory_object_t mem_obj, memory_object_offset_t mem_offset, void **current_chead);
+extern kern_return_t vm_compressor_relocate(void **current_chead, int *src_slot_p);
+extern void vm_compressor_finished_filling(void **current_chead);
+#endif /* CONFIG_FREEZE */

 
 

-#endif /* _VM_VM_COMPRESSOR_PAGER_H_ */
+#endif  /* _VM_VM_COMPRESSOR_PAGER_H_ */

 
 

-#endif /* XNU_KERNEL_PRIVATE */
+#endif  /* XNU_KERNEL_PRIVATE */