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* Copyright (c) 2023 Apple Inc. All rights reserved.
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
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* 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
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*
* 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
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#ifndef _VM_VM_COMPRESSOR_PAGER_INTERNAL_H_
#define _VM_VM_COMPRESSOR_PAGER_INTERNAL_H_
#include <sys/cdefs.h>
#include <vm/vm_compressor_pager_xnu.h>
__BEGIN_DECLS
#ifdef XNU_KERNEL_PRIVATE
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,
vm_compressor_options_t flags);
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);
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 bool osenvironment_is_diagnostics(void);
extern void vm_compressor_init(void);
extern bool vm_compressor_is_slot_compressed(int *slot);
extern int vm_compressor_put(ppnum_t pn, int *slot, void **current_chead, char *scratch_buf, vm_compressor_options_t flags);
extern int vm_compressor_get(ppnum_t pn, int *slot, vm_compressor_options_t flags);
extern int vm_compressor_free(int *slot, vm_compressor_options_t flags);
#if CONFIG_TRACK_UNMODIFIED_ANON_PAGES
extern int vm_uncompressed_put(ppnum_t pn, int *slot);
extern int vm_uncompressed_get(ppnum_t pn, int *slot, vm_compressor_options_t flags);
extern int vm_uncompressed_free(int *slot, vm_compressor_options_t flags);
#endif /* CONFIG_TRACK_UNMODIFIED_ANON_PAGES */
extern unsigned int vm_compressor_pager_reap_pages(memory_object_t mem_obj, vm_compressor_options_t flags);
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 */
#if DEVELOPMENT || DEBUG
extern kern_return_t vm_compressor_pager_inject_error(memory_object_t pager,
memory_object_offset_t offset);
extern void vm_compressor_inject_error(int *slot);
extern kern_return_t vm_compressor_pager_dump(memory_object_t mem_obj, char *buf, size_t *size,
bool *is_compressor, unsigned int *slot_count);
#endif /* DEVELOPMENT || DEBUG */
#endif /* XNU_KERNEL_PRIVATE */
__END_DECLS
#endif /* _VM_VM_COMPRESSOR_PAGER_INTERNAL_H_ */