Atmosphere/libraries/libmesosphere/include/mesosphere/kern_k_transfer_memory.hpp

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/*
* Copyright (c) Atmosphère-NX
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*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <mesosphere/kern_common.hpp>
#include <mesosphere/kern_k_auto_object.hpp>
#include <mesosphere/kern_slab_helpers.hpp>
namespace ams::kern {
class KTransferMemory final : public KAutoObjectWithSlabHeapAndContainer<KTransferMemory, KAutoObjectWithList> {
MESOSPHERE_AUTOOBJECT_TRAITS(KTransferMemory, KAutoObject);
private:
util::TypedStorage<KPageGroup> m_page_group;
KProcess *m_owner;
KProcessAddress m_address;
KLightLock m_lock;
ams::svc::MemoryPermission m_owner_perm;
bool m_is_initialized;
bool m_is_mapped;
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public:
explicit KTransferMemory() : m_owner(nullptr), m_address(Null<KProcessAddress>), m_owner_perm(ams::svc::MemoryPermission_None), m_is_initialized(false), m_is_mapped(false) {
/* ... */
}
Result Initialize(KProcessAddress addr, size_t size, ams::svc::MemoryPermission own_perm);
virtual void Finalize() override;
virtual bool IsInitialized() const override { return m_is_initialized; }
virtual uintptr_t GetPostDestroyArgument() const override { return reinterpret_cast<uintptr_t>(m_owner); }
static void PostDestroy(uintptr_t arg);
Result Map(KProcessAddress address, size_t size, ams::svc::MemoryPermission map_perm);
Result Unmap(KProcessAddress address, size_t size);
KProcess *GetOwner() const { return m_owner; }
KProcessAddress GetSourceAddress() { return m_address; }
size_t GetSize() const { return m_is_initialized ? GetReference(m_page_group).GetNumPages() * PageSize : 0; }
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};
}