/*
* Copyright (c) 2023 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
* 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.
*
* 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#ifndef _VM_VM_COMPRESSOR_INTERNAL_H_
#define _VM_VM_COMPRESSOR_INTERNAL_H_
#include <sys/cdefs.h>
#include <vm/vm_compressor_xnu.h>
__BEGIN_DECLS
#ifdef XNU_KERNEL_PRIVATE
void vm_consider_waking_compactor_swapper(void);
void vm_consider_swapping(void);
void vm_compressor_flush(void);
void c_seg_free(c_segment_t);
void c_seg_free_locked(c_segment_t);
void c_seg_need_delayed_compaction(c_segment_t, boolean_t);
void c_seg_update_task_owner(c_segment_t, task_t);
void vm_compressor_record_warmup_start(void);
void vm_compressor_record_warmup_end(void);
int vm_wants_task_throttled(task_t);
extern void vm_compaction_swapper_do_init(void);
extern void vm_compressor_swap_init(void);
extern lck_rw_t c_master_lock;
#define PAGE_REPLACEMENT_DISALLOWED(enable) (enable == TRUE ? lck_rw_lock_shared(&c_master_lock) : lck_rw_done(&c_master_lock))
#define PAGE_REPLACEMENT_ALLOWED(enable) (enable == TRUE ? lck_rw_lock_exclusive(&c_master_lock) : lck_rw_done(&c_master_lock))
#if ENCRYPTED_SWAP
extern void vm_swap_decrypt(c_segment_t);
#endif /* ENCRYPTED_SWAP */
extern void vm_swap_free(uint64_t);
extern void c_seg_swapin_requeue(c_segment_t, boolean_t, boolean_t, boolean_t);
extern int c_seg_swapin(c_segment_t, boolean_t, boolean_t);
extern void c_seg_wait_on_busy(c_segment_t);
extern void c_seg_trim_tail(c_segment_t);
extern void c_seg_switch_state(c_segment_t, int, boolean_t);
extern boolean_t fastwake_recording_in_progress;
extern int compaction_swapper_inited;
extern int compaction_swapper_running;
extern uint64_t vm_swap_put_failures;
extern int c_overage_swapped_count;
extern int c_overage_swapped_limit;
extern queue_head_t c_minor_list_head;
extern queue_head_t c_age_list_head;
extern queue_head_t c_major_list_head;
extern queue_head_t c_early_swapout_list_head;
extern queue_head_t c_regular_swapout_list_head;
extern queue_head_t c_late_swapout_list_head;
extern queue_head_t c_swappedout_list_head;
extern queue_head_t c_swappedout_sparse_list_head;
extern uint64_t first_c_segment_to_warm_generation_id;
extern uint64_t last_c_segment_to_warm_generation_id;
extern boolean_t hibernate_flushing;
extern boolean_t hibernate_no_swapspace;
extern boolean_t hibernate_in_progress_with_pinned_swap;
extern boolean_t hibernate_flush_timed_out;
extern void c_seg_insert_into_q(queue_head_t *, c_segment_t);
extern uint64_t vm_compressor_compute_elapsed_msecs(clock_sec_t, clock_nsec_t, clock_sec_t, clock_nsec_t);
uint32_t vm_compressor_get_encode_scratch_size(void) __pure2;
uint32_t vm_compressor_get_decode_scratch_size(void) __pure2;
#if RECORD_THE_COMPRESSED_DATA
extern void c_compressed_record_init(void);
extern void c_compressed_record_write(char *, int);
#endif
#endif /* XNU_KERNEL_PRIVATE */
__END_DECLS
#endif /* _VM_VM_COMPRESSOR_INTERNAL_H_ */