mirror of
https://review.haiku-os.org/haiku
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d593e74a27
* a vm_cache now maintains a list of its "consumer" caches. * introduced to new functions that add/remove consumer to a cache (instead of only maintaining the vm_cache::source field). * fixed the incorrect reference counting when doing copy-on-write; we kept one ref too many of the lower cache. * minor cleanup. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19035 a95241bf-73f2-0310-859d-f6bbb57e9c96
43 lines
1.4 KiB
C
43 lines
1.4 KiB
C
/*
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* Copyright 2003-2006, 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_CACHE_H
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#define _KERNEL_VM_CACHE_H
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#include <kernel.h>
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#include <vm.h>
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struct kernel_args;
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#ifdef __cplusplus
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extern "C" {
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#endif
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status_t vm_cache_init(struct kernel_args *args);
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vm_cache *vm_cache_create(vm_store *store);
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status_t vm_cache_ref_create(vm_cache *cache);
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void vm_cache_acquire_ref(vm_cache_ref *cache_ref);
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void vm_cache_release_ref(vm_cache_ref *cache_ref);
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vm_page *vm_cache_lookup_page(vm_cache_ref *cacheRef, off_t page);
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void vm_cache_insert_page(vm_cache_ref *cacheRef, vm_page *page, off_t offset);
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void vm_cache_remove_page(vm_cache_ref *cacheRef, vm_page *page);
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void vm_cache_remove_consumer(vm_cache_ref *cacheRef, vm_cache *consumer);
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void vm_cache_add_consumer(vm_cache_ref *cacheRef, vm_cache *consumer);
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status_t vm_cache_write_modified(vm_cache_ref *ref, bool fsReenter);
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status_t vm_cache_set_minimal_commitment(vm_cache_ref *ref, off_t commitment);
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status_t vm_cache_resize(vm_cache_ref *cacheRef, off_t newSize);
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status_t vm_cache_insert_area(vm_cache_ref *cacheRef, vm_area *area);
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status_t vm_cache_remove_area(vm_cache_ref *cacheRef, vm_area *area);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _KERNEL_VM_CACHE_H */
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