forked from suyu/suyu
85 lines
2.8 KiB
C++
85 lines
2.8 KiB
C++
// Copyright 2014 Citra Emulator Project
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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 <string>
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#include "common/common_types.h"
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#include "core/device_memory.h"
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#include "core/hle/kernel/memory/memory_block.h"
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#include "core/hle/kernel/memory/page_linked_list.h"
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#include "core/hle/kernel/object.h"
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#include "core/hle/kernel/process.h"
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#include "core/hle/result.h"
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namespace Kernel {
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class KernelCore;
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class SharedMemory final : public Object {
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public:
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explicit SharedMemory(KernelCore& kernel, Core::DeviceMemory& device_memory);
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~SharedMemory() override;
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static std::shared_ptr<SharedMemory> Create(
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KernelCore& kernel, Core::DeviceMemory& device_memory, Process* owner_process,
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Memory::PageLinkedList&& page_list, Memory::MemoryPermission owner_permission,
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Memory::MemoryPermission user_permission, PAddr physical_address, std::size_t size,
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std::string name = "Unknown");
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std::string GetTypeName() const override {
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return "SharedMemory";
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}
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std::string GetName() const override {
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return name;
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}
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static constexpr HandleType HANDLE_TYPE = HandleType::SharedMemory;
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HandleType GetHandleType() const override {
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return HANDLE_TYPE;
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}
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/**
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* Maps a shared memory block to an address in the target process' address space
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* @param target_process Process on which to map the memory block
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* @param address Address in system memory to map shared memory block to
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* @param size Size of the shared memory block to map
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* @param permissions Memory block map permissions (specified by SVC field)
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*/
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ResultCode Map(Process& target_process, VAddr address, std::size_t size,
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Memory::MemoryPermission permission);
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/**
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* Gets a pointer to the shared memory block
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* @param offset Offset from the start of the shared memory block to get pointer
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* @return A pointer to the shared memory block from the specified offset
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*/
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u8* GetPointer(std::size_t offset = 0) {
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return device_memory.GetPointer(physical_address + offset);
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}
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/**
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* Gets a pointer to the shared memory block
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* @param offset Offset from the start of the shared memory block to get pointer
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* @return A pointer to the shared memory block from the specified offset
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*/
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const u8* GetPointer(std::size_t offset = 0) const {
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return device_memory.GetPointer(physical_address + offset);
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}
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private:
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Core::DeviceMemory& device_memory;
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Process* owner_process{};
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Memory::PageLinkedList page_list;
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Memory::MemoryPermission owner_permission{};
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Memory::MemoryPermission user_permission{};
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PAddr physical_address{};
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std::size_t size{};
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std::string name;
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};
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} // namespace Kernel
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