49 lines
2.3 KiB
C++
49 lines
2.3 KiB
C++
/*
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* Copyright (c) 2017, Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#pragma once
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#include <cstdint>
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#include <cstddef>
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namespace MemoryConstants {
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static const uint64_t zoneHigh = ~(uint64_t)0xFFFFFFFF;
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static const uint64_t kiloByte = 1024;
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static const uint64_t kiloByteShiftSize = 10;
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static const uint64_t megaByte = 1024 * kiloByte;
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static const uint64_t gigaByte = 1024 * megaByte;
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static const size_t minBufferAlignment = 4;
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static const size_t cacheLineSize = 64;
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static const size_t pageSize = 4 * kiloByte;
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static const size_t pageSize64k = 64 * kiloByte;
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static const size_t preferredAlignment = pageSize; // alignment preferred for performance reasons, i.e. internal allocations
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static const size_t allocationAlignment = pageSize; // alignment required to gratify incoming pointer, i.e. passed host_ptr
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static const size_t slmWindowAlignment = 128 * kiloByte;
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static const size_t slmWindowSize = 64 * kiloByte;
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static const uintptr_t pageMask = (pageSize - 1);
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static const uintptr_t page64kMask = (pageSize64k - 1);
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static const uint64_t max32BitAppAddress = ((1ULL << 31) - 1);
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static const uint64_t max64BitAppAddress = ((1ULL << 47) - 1);
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}
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const bool is32bit = (sizeof(void *) == 4) ? true : false;
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const bool is64bit = (sizeof(void *) == 8) ? true : false;
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