mirror of https://github.com/yuzu-emu/yuzu.git
89 lines
3.1 KiB
C++
89 lines
3.1 KiB
C++
// SPDX-FileCopyrightText: 2014 Citra Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
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#include <optional>
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#include <string>
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#include "core/device_memory.h"
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#include "core/hle/kernel/k_memory_block.h"
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#include "core/hle/kernel/k_page_group.h"
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#include "core/hle/kernel/k_process.h"
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#include "core/hle/kernel/k_typed_address.h"
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#include "core/hle/kernel/slab_helpers.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 KSharedMemory final
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: public KAutoObjectWithSlabHeapAndContainer<KSharedMemory, KAutoObjectWithList> {
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KERNEL_AUTOOBJECT_TRAITS(KSharedMemory, KAutoObject);
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public:
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explicit KSharedMemory(KernelCore& kernel);
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~KSharedMemory() override;
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Result Initialize(Core::DeviceMemory& device_memory_, KProcess* owner_process_,
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Svc::MemoryPermission owner_permission_,
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Svc::MemoryPermission user_permission_, std::size_t size_);
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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 map_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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Result Map(KProcess& target_process, KProcessAddress address, std::size_t map_size,
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Svc::MemoryPermission permissions);
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/**
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* Unmaps a shared memory block from an address in the target process' address space
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* @param target_process Process on which to unmap the memory block
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* @param address Address in system memory to unmap shared memory block
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* @param unmap_size Size of the shared memory block to unmap
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*/
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Result Unmap(KProcess& target_process, KProcessAddress address, std::size_t unmap_size);
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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 m_device_memory->GetPointer<u8>(m_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 m_device_memory->GetPointer<u8>(m_physical_address + offset);
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}
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void Finalize() override;
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bool IsInitialized() const override {
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return m_is_initialized;
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}
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static void PostDestroy(uintptr_t arg) {}
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private:
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Core::DeviceMemory* m_device_memory{};
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KProcess* m_owner_process{};
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std::optional<KPageGroup> m_page_group{};
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Svc::MemoryPermission m_owner_permission{};
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Svc::MemoryPermission m_user_permission{};
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KPhysicalAddress m_physical_address{};
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std::size_t m_size{};
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KResourceLimit* m_resource_limit{};
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bool m_is_initialized{};
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};
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} // namespace Kernel
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