mirror of
https://github.com/Atmosphere-NX/Atmosphere
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60 lines
2.5 KiB
C++
60 lines
2.5 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <mesosphere/kern_common.hpp>
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#include <mesosphere/kern_k_auto_object.hpp>
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#include <mesosphere/kern_slab_helpers.hpp>
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#include <mesosphere/kern_select_page_table.hpp>
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namespace ams::kern {
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class KProcess;
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class KResourceLimit;
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class KSharedMemory final : public KAutoObjectWithSlabHeapAndContainer<KSharedMemory, KAutoObjectWithList> {
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MESOSPHERE_AUTOOBJECT_TRAITS(KSharedMemory, KAutoObject);
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private:
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KPageGroup page_group;
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KResourceLimit *resource_limit;
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u64 owner_process_id;
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ams::svc::MemoryPermission owner_perm;
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ams::svc::MemoryPermission remote_perm;
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bool is_initialized;
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public:
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explicit KSharedMemory()
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: page_group(std::addressof(Kernel::GetBlockInfoManager())), resource_limit(nullptr), owner_process_id(std::numeric_limits<u64>::max()),
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owner_perm(ams::svc::MemoryPermission_None), remote_perm(ams::svc::MemoryPermission_None), is_initialized(false)
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{
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/* ... */
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}
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virtual ~KSharedMemory() { /* ... */ }
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Result Initialize(KProcess *owner, size_t size, ams::svc::MemoryPermission own_perm, ams::svc::MemoryPermission rem_perm);
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virtual void Finalize() override;
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virtual bool IsInitialized() const override { return this->is_initialized; }
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static void PostDestroy(uintptr_t arg) { MESOSPHERE_UNUSED(arg); /* ... */ }
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Result Map(KProcessPageTable *table, KProcessAddress address, size_t size, KProcess *process, ams::svc::MemoryPermission map_perm);
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Result Unmap(KProcessPageTable *table, KProcessAddress address, size_t size, KProcess *process);
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u64 GetOwnerProcessId() const { return this->owner_process_id; }
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size_t GetSize() const { return this->page_group.GetNumPages() * PageSize; }
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};
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}
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