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42 lines
1.2 KiB
C++
42 lines
1.2 KiB
C++
/*
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* Copyright (C) 2019-2020 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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#pragma once
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#include "helpers/debug_helpers.h"
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#include "helpers/non_copyable_or_moveable.h"
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#include <atomic>
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#include <memory>
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namespace NEO {
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class LocalMemoryUsageBankSelector : public NonCopyableOrMovableClass {
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public:
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LocalMemoryUsageBankSelector() = delete;
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LocalMemoryUsageBankSelector(uint32_t banksCount);
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uint32_t getLeastOccupiedBank();
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void reserveOnBanks(uint32_t memoryBanks, uint64_t allocationSize) {
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updateUsageInfo(memoryBanks, allocationSize, true);
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}
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void freeOnBanks(uint32_t memoryBanks, uint64_t allocationSize) {
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updateUsageInfo(memoryBanks, allocationSize, false);
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}
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uint64_t getOccupiedMemorySizeForBank(uint32_t bankIndex) {
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UNRECOVERABLE_IF(bankIndex >= banksCount);
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return memorySizes[bankIndex].load();
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}
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protected:
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uint32_t banksCount = 0;
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std::unique_ptr<std::atomic<uint64_t>[]> memorySizes = nullptr;
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void updateUsageInfo(uint32_t memoryBanks, uint64_t allocationSize, bool reserve);
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void freeOnBank(uint32_t bankIndex, uint64_t allocationSize);
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void reserveOnBank(uint32_t bankIndex, uint64_t allocationSize);
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};
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} // namespace NEO
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