47 lines
1.7 KiB
C
47 lines
1.7 KiB
C
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/*
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* Copyright (c) 2018, 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 "runtime/memory_manager/memory_constants.h"
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#include <atomic>
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namespace OCLRT {
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class PhysicalAddressAllocator {
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public:
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PhysicalAddressAllocator() {
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nextPageAddress.store(initialPageAddress);
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};
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~PhysicalAddressAllocator() = default;
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uint64_t reservePage(uint32_t memoryBank) {
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auto address = nextPageAddress.fetch_add(MemoryConstants::pageSize);
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return address;
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}
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protected:
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std::atomic<uint64_t> nextPageAddress;
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const uint64_t initialPageAddress = 0x1000;
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};
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} // namespace OCLRT
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