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The FIPS 140-2 Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms certified to FIPS 140-2 level 1. This jar contains the debug version JCE provider and low-level API for the BC-FJA version 1.0.2.3, FIPS Certificate #3514. Please note the debug jar is not certified.

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package org.bouncycastle.jcajce.provider;

import java.util.concurrent.ConcurrentLinkedDeque;

class EntropyDaemon
    implements Runnable
{
    private final ConcurrentLinkedDeque tasks = new ConcurrentLinkedDeque();

    void addTask(Runnable task)
    {
        tasks.add(task);
    }

    @Override
    public void run()
    {
        while (!Thread.currentThread().isInterrupted())
        {
            Runnable task = tasks.pollFirst();

            if (task != null)
            {
                try
                {
                    task.run();
                }
                catch (Throwable e)
                {
                    // ignore
                }
            }
            else
            {
                try
                {
                    Thread.sleep(5000);
                }
                catch (InterruptedException e)
                {
                    Thread.currentThread().interrupt();
                }
            }
        }
    }
}