modules/platforms/cpp/ignite/common/uuid.cpp

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "uuid.h"

#include <random>
#include <mutex>

namespace ignite {

uuid uuid::random() {
    static std::mutex random_mutex;
    static std::random_device rd;
    static std::mt19937 gen(rd());

    std::uniform_int_distribution<int64_t> distrib;

    std::lock_guard<std::mutex> lock(random_mutex);

    return {distrib(gen), distrib(gen)};
}

} // namespace ignite