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62 lines
1.8 KiB
C++
62 lines
1.8 KiB
C++
/*
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* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
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* its licensors.
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*
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* For complete copyright and license terms please see the LICENSE at the root of this
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* distribution (the "License"). All use of this software is governed by the License,
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* or, if provided, by the license below or the license accompanying this file. Do not
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* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*
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*/
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// Original file Copyright Crytek GMBH or its affiliates, used under license.
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#ifndef CRYINCLUDE_CRYSYSTEM_MEMORYADDRESSRANGE_H
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#define CRYINCLUDE_CRYSYSTEM_MEMORYADDRESSRANGE_H
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#pragma once
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#include "IMemory.h"
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class CMemoryAddressRange
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: public IMemoryAddressRange
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{
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public:
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static void* ReserveSpace(size_t sz);
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static size_t GetSystemPageSize();
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public:
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CMemoryAddressRange(char* pBaseAddress, size_t nPageSize, size_t nPageCount, const char* sName);
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CMemoryAddressRange(size_t capacity, const char* name);
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~CMemoryAddressRange();
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ILINE bool IsInRange(void* p) const
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{
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return m_pBaseAddress <= p && p < (m_pBaseAddress + m_nPageSize * m_nPageCount);
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}
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public:
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void Release();
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char* GetBaseAddress() const;
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size_t GetPageCount() const;
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size_t GetPageSize() const;
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void* MapPage(size_t pageIdx);
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void UnmapPage(size_t pageIdx);
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private:
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CMemoryAddressRange(const CMemoryAddressRange&);
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CMemoryAddressRange& operator = (const CMemoryAddressRange&);
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private:
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char* m_pBaseAddress;
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size_t m_nPageSize;
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size_t m_nPageCount;
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#if defined(APPLE) || defined(LINUX)
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size_t m_allocatedSpace; // Required to unmap latter on
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#endif
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};
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#endif // CRYINCLUDE_CRYSYSTEM_MEMORYADDRESSRANGE_H
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