forked from suyu/suyu
91 lines
2.5 KiB
C++
91 lines
2.5 KiB
C++
// Copyright 2019 yuzu emulator team
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <memory>
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#include "core/hle/kernel/memory/memory_block.h"
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#include "core/hle/kernel/object.h"
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#include "core/hle/kernel/physical_memory.h"
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union ResultCode;
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namespace Core::Memory {
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class Memory;
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}
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namespace Kernel {
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class KernelCore;
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class Process;
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/// Defines the interface for transfer memory objects.
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///
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/// Transfer memory is typically used for the purpose of
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/// transferring memory between separate process instances,
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/// thus the name.
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///
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class TransferMemory final : public Object {
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public:
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explicit TransferMemory(KernelCore& kernel, Core::Memory::Memory& memory);
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~TransferMemory() override;
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static constexpr HandleType HANDLE_TYPE = HandleType::TransferMemory;
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static std::shared_ptr<TransferMemory> Create(KernelCore& kernel, Core::Memory::Memory& memory,
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VAddr base_address, std::size_t size,
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Memory::MemoryPermission permissions);
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TransferMemory(const TransferMemory&) = delete;
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TransferMemory& operator=(const TransferMemory&) = delete;
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TransferMemory(TransferMemory&&) = delete;
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TransferMemory& operator=(TransferMemory&&) = delete;
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std::string GetTypeName() const override {
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return "TransferMemory";
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}
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std::string GetName() const override {
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return GetTypeName();
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}
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HandleType GetHandleType() const override {
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return HANDLE_TYPE;
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}
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/// Gets a pointer to the backing block of this instance.
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const u8* GetPointer() const;
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/// Gets the size of the memory backing this instance in bytes.
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constexpr std::size_t GetSize() const {
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return size;
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}
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/// Reserves the region to be used for the transfer memory, called after the transfer memory is
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/// created.
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ResultCode Reserve();
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/// Resets the region previously used for the transfer memory, called after the transfer memory
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/// is closed.
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ResultCode Reset();
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private:
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/// The base address for the memory managed by this instance.
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VAddr base_address{};
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/// Size of the memory, in bytes, that this instance manages.
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std::size_t size{};
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/// The memory permissions that are applied to this instance.
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Memory::MemoryPermission owner_permissions{};
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/// The process that this transfer memory instance was created under.
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Process* owner_process{};
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Core::Memory::Memory& memory;
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};
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} // namespace Kernel
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