mempolicyExample1.cpp

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/**
 * @file
 * @copyright
 *   SPDX-FileCopyrightText: 2023-2023 European Southern Observatory (ESO)
 *
 *   SPDX-License-Identifier: LGPL-3.0-only
 */
#include <iostream>
#include <numapp/numa.hpp>
#include <numapp/mempolicy.hpp>
 
int main() {
    using numapp::MemPolicy;
    using numapp::Nodemask;
    if (!numapp::NumaAvailable()) {
        std::cout << "NUMA not available";
        return -1;
    }
 
    auto policy = MemPolicy(MemPolicy::Mode::Bind, Nodemask::MakeFromNodestring("0-1"));
    // Set default policy for main thread
    if (auto ec = numapp::thisThread::Apply(policy); ec) {
        std::cout << "Failed to apply policy: " << ec.message() << std::endl;
        return 1;
    }
    // And apply policy to stack
    if (auto ec = numapp::thisThread::ApplyStack(policy); ec) {
        std::cout << "Failed to apply policy: " << ec.message() << std::endl;
        return 1;
    }
}