* 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
* 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,
* 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@
*/
-#ifdef XNU_KERNEL_PRIVATE
+#ifdef XNU_KERNEL_PRIVATE
#ifndef _VM_VM_COMPRESSOR_PAGER_H_
#define _VM_VM_COMPRESSOR_PAGER_H_
#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);
+ 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(
- memory_object_t mem_obj,
- memory_object_offset_t offset,
- ppnum_t ppnum,
- int *my_fault_type,
- int flags);
+ 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 void vm_compressor_pager_state_clr(
- memory_object_t mem_obj,
- memory_object_offset_t offset);
+extern unsigned int vm_compressor_pager_state_clr(
+ memory_object_t mem_obj,
+ memory_object_offset_t offset);
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)
-#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) { \
- vm_compressor_pager_state_clr( \
- (object)->pager, \
- (offset) + (object)->paging_offset); \
- } \
+#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(
+ 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(
+ 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 void vm_compressor_free(int *slot);
+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_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);
+
+#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 */
projects / apple / xnu.git / blobdiff