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