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