57 lines
1.9 KiB
C++
57 lines
1.9 KiB
C++
/*
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* Copyright (C) 2023-2024 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 "shared/source/os_interface/linux/numa_library.h"
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#include "shared/source/helpers/debug_helpers.h"
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#include <cerrno>
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#include <iostream>
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namespace NEO {
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namespace Linux {
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std::unique_ptr<NEO::OsLibrary> NumaLibrary::osLibrary(nullptr);
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NumaLibrary::GetMemPolicyPtr NumaLibrary::getMemPolicyFunction(nullptr);
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NumaLibrary::NumaAvailablePtr NumaLibrary::numaAvailableFunction(nullptr);
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NumaLibrary::NumaMaxNodePtr NumaLibrary::numaMaxNodeFunction(nullptr);
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int NumaLibrary::maxNode(-1);
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bool NumaLibrary::numaLoaded(false);
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bool NumaLibrary::init() {
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osLibrary.reset(NEO::OsLibrary::loadFunc(std::string(numaLibNameStr)));
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numaLoaded = false;
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numaAvailableFunction = nullptr;
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numaMaxNodeFunction = nullptr;
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getMemPolicyFunction = nullptr;
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if (osLibrary) {
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DEBUG_BREAK_IF(!osLibrary->isLoaded());
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numaAvailableFunction = reinterpret_cast<NumaAvailablePtr>(osLibrary->getProcAddress(std::string(procNumaAvailableStr)));
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numaMaxNodeFunction = reinterpret_cast<NumaMaxNodePtr>(osLibrary->getProcAddress(std::string(procNumaMaxNodeStr)));
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getMemPolicyFunction = reinterpret_cast<GetMemPolicyPtr>(osLibrary->getProcAddress(std::string(procGetMemPolicyStr)));
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if (numaAvailableFunction && numaMaxNodeFunction && getMemPolicyFunction) {
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if ((*numaAvailableFunction)() == 0) {
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maxNode = (*numaMaxNodeFunction)();
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numaLoaded = maxNode > 0;
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}
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}
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}
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return numaLoaded;
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}
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bool NumaLibrary::getMemPolicy(int *mode, std::vector<unsigned long> &nodeMask) {
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if (numaLoaded) {
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// re-initialize vector with size maxNode;
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std::vector<unsigned long>(maxNode + 1, 0).swap(nodeMask);
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return (*getMemPolicyFunction)(mode, nodeMask.data(), maxNode + 1, nullptr, 0) != -1;
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}
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return false;
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}
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} // namespace Linux
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} // namespace NEO
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