mirror of
https://github.com/Fennix-Project/Kernel.git
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66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
/*
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This file is part of Fennix Kernel.
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Fennix Kernel is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix Kernel is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef __FENNIX_KERNEL_MEMORY_TEMP_PAGE_TABLE_H__
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#define __FENNIX_KERNEL_MEMORY_TEMP_PAGE_TABLE_H__
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#include <types.h>
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#include <memory/table.hpp>
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extern Memory::PageTable *KernelPageTable;
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namespace Memory
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{
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class SwapPT
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{
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private:
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PageTable *Replace = nullptr;
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PageTable *Restore = nullptr;
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bool Ignore;
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public:
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SwapPT(auto ReplaceWith,
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auto _RestoreWith = nullptr)
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: Replace((PageTable *)ReplaceWith)
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{
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PageTable *RestoreWith = (PageTable *)_RestoreWith;
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this->Ignore = Replace == RestoreWith;
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if (this->Ignore)
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return;
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if (RestoreWith)
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Restore = RestoreWith;
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else
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Restore = KernelPageTable;
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Replace->Update();
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}
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~SwapPT()
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{
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if (this->Ignore)
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return;
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Restore->Update();
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}
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};
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}
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#endif // !__FENNIX_KERNEL_MEMORY_TEMP_PAGE_TABLE_H__
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