io.questdb.griffin.engine.functions.rnd.SharedRandom Maven / Gradle / Ivy
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*
* Copyright (c) 2014-2019 Appsicle
* Copyright (c) 2019-2020 QuestDB
*
* Licensed 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
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* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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package io.questdb.griffin.engine.functions.rnd;
import io.questdb.cairo.CairoConfiguration;
import io.questdb.std.Rnd;
public class SharedRandom {
public static final ThreadLocal RANDOM = new ThreadLocal<>();
public static Rnd getRandom(CairoConfiguration configuration) {
Rnd rnd = RANDOM.get();
if (rnd == null) {
RANDOM.set(rnd = new Rnd(configuration.getMillisecondClock().getTicks(), configuration.getMicrosecondClock().getTicks()));
}
return rnd;
}
}