75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
/*
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* Copyright 2002-2009, Axel Dörfler, axeld@pinc-software.de.
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* Distributed under the terms of the MIT License.
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*
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* Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
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* Distributed under the terms of the NewOS License.
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*/
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#ifndef _KERNEL_VM_VM_PAGE_H
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#define _KERNEL_VM_VM_PAGE_H
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#include <vm/vm.h>
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#include <vm/vm_types.h>
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struct kernel_args;
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extern int32 gMappedPagesCount;
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struct vm_page_reservation {
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uint32 count;
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};
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#ifdef __cplusplus
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extern "C" {
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#endif
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void vm_page_init_num_pages(struct kernel_args *args);
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status_t vm_page_init(struct kernel_args *args);
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status_t vm_page_init_post_area(struct kernel_args *args);
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status_t vm_page_init_post_thread(struct kernel_args *args);
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status_t vm_mark_page_inuse(page_num_t page);
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status_t vm_mark_page_range_inuse(page_num_t startPage, page_num_t length);
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void vm_page_free(struct VMCache *cache, struct vm_page *page);
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void vm_page_set_state(struct vm_page *page, int state);
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void vm_page_requeue(struct vm_page *page, bool tail);
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// get some data about the number of pages in the system
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page_num_t vm_page_num_pages(void);
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page_num_t vm_page_num_free_pages(void);
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page_num_t vm_page_num_available_pages(void);
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page_num_t vm_page_num_unused_pages(void);
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void vm_page_get_stats(system_info *info);
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phys_addr_t vm_page_max_address();
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status_t vm_page_write_modified_page_range(struct VMCache *cache,
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uint32 firstPage, uint32 endPage);
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status_t vm_page_write_modified_pages(struct VMCache *cache);
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void vm_page_schedule_write_page(struct vm_page *page);
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void vm_page_schedule_write_page_range(struct VMCache *cache,
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uint32 firstPage, uint32 endPage);
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void vm_page_unreserve_pages(vm_page_reservation* reservation);
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void vm_page_reserve_pages(vm_page_reservation* reservation, uint32 count,
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int priority);
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bool vm_page_try_reserve_pages(vm_page_reservation* reservation, uint32 count,
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int priority);
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struct vm_page *vm_page_allocate_page(vm_page_reservation* reservation,
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uint32 flags);
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struct vm_page *vm_page_allocate_page_run(uint32 flags, page_num_t length,
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const physical_address_restrictions* restrictions, int priority);
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struct vm_page *vm_page_at_index(int32 index);
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struct vm_page *vm_lookup_page(page_num_t pageNumber);
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bool vm_page_is_dummy(struct vm_page *page);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _KERNEL_VM_VM_PAGE_H */
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