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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <memory>
#include <string>
#include "common/common_types.h"
#include "core/device_memory.h"
#include "core/hle/kernel/k_memory_block.h"
#include "core/hle/kernel/k_page_linked_list.h"
#include "core/hle/kernel/object.h"
#include "core/hle/kernel/process.h"
#include "core/hle/result.h"
namespace Kernel {
class KernelCore;
class KSharedMemory final : public Object {
public:
explicit KSharedMemory(KernelCore& kernel, Core::DeviceMemory& device_memory);
~KSharedMemory() override;
static std::shared_ptr<KSharedMemory> Create(
KernelCore& kernel, Core::DeviceMemory& device_memory, Process* owner_process,
KPageLinkedList&& page_list, KMemoryPermission owner_permission,
KMemoryPermission user_permission, PAddr physical_address, std::size_t size,
std::string name);
std::string GetTypeName() const override {
return "SharedMemory";
}
std::string GetName() const override {
return name;
}
static constexpr HandleType HANDLE_TYPE = HandleType::SharedMemory;
HandleType GetHandleType() const override {
return HANDLE_TYPE;
}
/**
* Maps a shared memory block to an address in the target process' address space
* @param target_process Process on which to map the memory block
* @param address Address in system memory to map shared memory block to
* @param size Size of the shared memory block to map
* @param permissions Memory block map permissions (specified by SVC field)
*/
ResultCode Map(Process& target_process, VAddr address, std::size_t size,
KMemoryPermission permissions);
/**
* Gets a pointer to the shared memory block
* @param offset Offset from the start of the shared memory block to get pointer
* @return A pointer to the shared memory block from the specified offset
*/
u8* GetPointer(std::size_t offset = 0) {
return device_memory.GetPointer(physical_address + offset);
}
/**
* Gets a pointer to the shared memory block
* @param offset Offset from the start of the shared memory block to get pointer
* @return A pointer to the shared memory block from the specified offset
*/
const u8* GetPointer(std::size_t offset = 0) const {
return device_memory.GetPointer(physical_address + offset);
}
void Finalize() override {}
private:
Core::DeviceMemory& device_memory;
Process* owner_process{};
KPageLinkedList page_list;
KMemoryPermission owner_permission{};
KMemoryPermission user_permission{};
PAddr physical_address{};
std::size_t size{};
std::string name;
};
} // namespace Kernel
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