39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
/*
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* Copyright (C) 2019 Intel Corporation
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*
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* SPDX-License-Identifier: MIT
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*
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*/
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#include "runtime/memory_manager/local_memory_usage.h"
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#include <algorithm>
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#include <iterator>
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namespace NEO {
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LocalMemoryUsageBankSelector::LocalMemoryUsageBankSelector(uint32_t banksCount) : banksCount(banksCount) {
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UNRECOVERABLE_IF(banksCount == 0);
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memorySizes.reset(new std::atomic<uint64_t>[banksCount]);
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for (uint32_t i = 0; i < banksCount; i++) {
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memorySizes[i] = 0;
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}
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}
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uint32_t LocalMemoryUsageBankSelector::getLeastOccupiedBank() {
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auto leastOccupiedBankIterator = std::min_element(memorySizes.get(), memorySizes.get() + banksCount);
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return static_cast<uint32_t>(std::distance(memorySizes.get(), leastOccupiedBankIterator));
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}
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void LocalMemoryUsageBankSelector::freeOnBank(uint32_t bankIndex, uint64_t allocationSize) {
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UNRECOVERABLE_IF(bankIndex >= banksCount);
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memorySizes[bankIndex] -= allocationSize;
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}
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void LocalMemoryUsageBankSelector::reserveOnBank(uint32_t bankIndex, uint64_t allocationSize) {
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UNRECOVERABLE_IF(bankIndex >= banksCount);
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memorySizes[bankIndex] += allocationSize;
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}
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} // namespace NEO
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