SelectTimeout.java

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* version 2 for more details (a copy is included in the LICENSE file that
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/*
 * @test
 * @bug 8165000
 * @summary Verify no IOException on OS X for large timeout value in select().
 * @requires (os.family == "mac")
 */
import java.io.IOException;
import java.nio.channels.Selector;

public class SelectTimeout {
    private static final long HUGE_TIMEOUT = 100000001000L;
    private static final long SLEEP_MILLIS = 10000;

    private static Exception theException;

    public static void main(String[] args)
        throws IOException, InterruptedException {
        int failures = 0;
        long[] timeouts =
            new long[] {0, HUGE_TIMEOUT/2, HUGE_TIMEOUT - 1, HUGE_TIMEOUT};
        for (long t : timeouts) {
            if (!test(t)) {
                failures++;
            }
        }
        if (failures > 0) {
            throw new RuntimeException("Test failed!");
        } else {
            System.out.println("Test succeeded");
        }
    }

    private static boolean test(final long timeout)
        throws InterruptedException, IOException {
        theException = null;

        Selector selector = Selector.open();

        Thread t = new Thread(() -> {
            try {
                selector.select(timeout);
            } catch (IOException ioe) {
                theException = ioe;
            }
        });
        t.start();

        Thread.currentThread().sleep(SLEEP_MILLIS);
        t.interrupt();

        if (theException == null) {
            System.out.printf("Test succeeded with timeout %d%n", timeout);
            return true;
        } else {
            System.err.printf("Test failed with timeout %d%n", timeout);
            theException.printStackTrace();
            return false;
        }
    }
}