mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-09-30 00:31:14 +00:00
79fa9765ca
We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace! This was a slightly tedious refactoring that took a long time, so it's not unlikely that some bugs crept in. Nevertheless, it does pass basic functionality testing, and it's just real nice to finally see the same pattern in all contexts. :^)
87 lines
2.9 KiB
C++
87 lines
2.9 KiB
C++
/*
|
|
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
|
|
* Copyright (c) 2021, Leon Albrecht <leon2002.la@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/RedBlackTree.h>
|
|
#include <AK/Vector.h>
|
|
#include <AK/WeakPtr.h>
|
|
#include <Kernel/Memory/AllocationStrategy.h>
|
|
#include <Kernel/Memory/PageDirectory.h>
|
|
#include <Kernel/UnixTypes.h>
|
|
|
|
namespace Kernel::Memory {
|
|
|
|
class AddressSpace {
|
|
public:
|
|
static ErrorOr<NonnullOwnPtr<AddressSpace>> try_create(AddressSpace const* parent);
|
|
~AddressSpace();
|
|
|
|
PageDirectory& page_directory() { return *m_page_directory; }
|
|
const PageDirectory& page_directory() const { return *m_page_directory; }
|
|
|
|
ErrorOr<Region*> add_region(NonnullOwnPtr<Region>);
|
|
|
|
size_t region_count() const { return m_regions.size(); }
|
|
|
|
RedBlackTree<FlatPtr, NonnullOwnPtr<Region>>& regions() { return m_regions; }
|
|
const RedBlackTree<FlatPtr, NonnullOwnPtr<Region>>& regions() const { return m_regions; }
|
|
|
|
void dump_regions();
|
|
|
|
ErrorOr<void> unmap_mmap_range(VirtualAddress, size_t);
|
|
|
|
ErrorOr<VirtualRange> try_allocate_range(VirtualAddress, size_t, size_t alignment = PAGE_SIZE);
|
|
|
|
ErrorOr<Region*> allocate_region_with_vmobject(VirtualRange const&, NonnullRefPtr<VMObject>, size_t offset_in_vmobject, StringView name, int prot, bool shared);
|
|
ErrorOr<Region*> allocate_region(VirtualRange const&, StringView name, int prot = PROT_READ | PROT_WRITE, AllocationStrategy strategy = AllocationStrategy::Reserve);
|
|
void deallocate_region(Region& region);
|
|
NonnullOwnPtr<Region> take_region(Region& region);
|
|
|
|
ErrorOr<Region*> try_allocate_split_region(Region const& source_region, VirtualRange const&, size_t offset_in_vmobject);
|
|
ErrorOr<Vector<Region*, 2>> try_split_region_around_range(Region const& source_region, VirtualRange const&);
|
|
|
|
Region* find_region_from_range(VirtualRange const&);
|
|
Region* find_region_containing(VirtualRange const&);
|
|
|
|
Vector<Region*> find_regions_intersecting(VirtualRange const&);
|
|
|
|
bool enforces_syscall_regions() const { return m_enforces_syscall_regions; }
|
|
void set_enforces_syscall_regions(bool b) { m_enforces_syscall_regions = b; }
|
|
|
|
void remove_all_regions(Badge<Process>);
|
|
|
|
RecursiveSpinlock& get_lock() const { return m_lock; }
|
|
|
|
size_t amount_clean_inode() const;
|
|
size_t amount_dirty_private() const;
|
|
size_t amount_virtual() const;
|
|
size_t amount_resident() const;
|
|
size_t amount_shared() const;
|
|
size_t amount_purgeable_volatile() const;
|
|
size_t amount_purgeable_nonvolatile() const;
|
|
|
|
private:
|
|
explicit AddressSpace(NonnullRefPtr<PageDirectory>);
|
|
|
|
mutable RecursiveSpinlock m_lock;
|
|
|
|
RefPtr<PageDirectory> m_page_directory;
|
|
|
|
RedBlackTree<FlatPtr, NonnullOwnPtr<Region>> m_regions;
|
|
|
|
struct RegionLookupCache {
|
|
Optional<VirtualRange> range;
|
|
WeakPtr<Region> region;
|
|
};
|
|
RegionLookupCache m_region_lookup_cache;
|
|
|
|
bool m_enforces_syscall_regions { false };
|
|
};
|
|
|
|
}
|