mirror of
https://github.com/RGBCube/serenity
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07f3d09c55
This patch move AddressSpace (the per-process memory manager) to using the new atomic "place" APIs in RegionTree as well, just like we did for MemoryManager in the previous commit. This required updating quite a few places where VM allocation and actually committing a Region object to the AddressSpace were separated by other code. All you have to do now is call into AddressSpace once and it'll take care of everything for you.
81 lines
3 KiB
C++
81 lines
3 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Leon Albrecht <leon2002.la@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/RedBlackTree.h>
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#include <AK/Vector.h>
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#include <AK/WeakPtr.h>
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#include <Kernel/Memory/AllocationStrategy.h>
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#include <Kernel/Memory/PageDirectory.h>
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#include <Kernel/Memory/Region.h>
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#include <Kernel/Memory/RegionTree.h>
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#include <Kernel/UnixTypes.h>
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namespace Kernel::Memory {
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class AddressSpace {
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public:
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static ErrorOr<NonnullOwnPtr<AddressSpace>> try_create(AddressSpace const* parent);
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~AddressSpace();
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PageDirectory& page_directory() { return *m_page_directory; }
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PageDirectory const& page_directory() const { return *m_page_directory; }
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size_t region_count() const { return m_region_tree.regions().size(); }
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auto& regions() { return m_region_tree.regions(); }
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auto const& regions() const { return m_region_tree.regions(); }
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void dump_regions();
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ErrorOr<void> unmap_mmap_range(VirtualAddress, size_t);
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ErrorOr<Region*> allocate_region_with_vmobject(VirtualRange requested_range, NonnullRefPtr<VMObject>, size_t offset_in_vmobject, StringView name, int prot, bool shared);
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ErrorOr<Region*> allocate_region_with_vmobject(VirtualAddress requested_address, size_t requested_size, size_t requested_alignment, NonnullRefPtr<VMObject>, size_t offset_in_vmobject, StringView name, int prot, bool shared);
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ErrorOr<Region*> allocate_region(VirtualAddress requested_address, size_t requested_size, size_t requested_alignment, StringView name, int prot = PROT_READ | PROT_WRITE, AllocationStrategy strategy = AllocationStrategy::Reserve);
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void deallocate_region(Region& region);
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NonnullOwnPtr<Region> take_region(Region& region);
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ErrorOr<Region*> try_allocate_split_region(Region const& source_region, VirtualRange const&, size_t offset_in_vmobject);
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ErrorOr<Vector<Region*, 2>> try_split_region_around_range(Region const& source_region, VirtualRange const&);
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Region* find_region_from_range(VirtualRange const&);
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Region* find_region_containing(VirtualRange const&);
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ErrorOr<Vector<Region*>> find_regions_intersecting(VirtualRange const&);
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bool enforces_syscall_regions() const { return m_enforces_syscall_regions; }
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void set_enforces_syscall_regions(bool b) { m_enforces_syscall_regions = b; }
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void remove_all_regions(Badge<Process>);
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RecursiveSpinlock& get_lock() const { return m_lock; }
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ErrorOr<size_t> amount_clean_inode() const;
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size_t amount_dirty_private() const;
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size_t amount_virtual() const;
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size_t amount_resident() const;
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size_t amount_shared() const;
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size_t amount_purgeable_volatile() const;
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size_t amount_purgeable_nonvolatile() const;
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auto& region_tree() { return m_region_tree; }
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private:
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AddressSpace(NonnullRefPtr<PageDirectory>, VirtualRange total_range);
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mutable RecursiveSpinlock m_lock;
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RefPtr<PageDirectory> m_page_directory;
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RegionTree m_region_tree;
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bool m_enforces_syscall_regions { false };
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};
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}
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