18  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  19  * or visit www.oracle.com if you need additional information or have any
  20  * questions.
  21  */
  22 
  23 /*
  24  * This file is available under and governed by the GNU General Public
  25  * License version 2 only, as published by the Free Software Foundation.
  26  * However, the following notice accompanied the original version of this
  27  * file:
  28  *
  29  * Written by Doug Lea with assistance from members of JCP JSR-166
  30  * Expert Group and released to the public domain, as explained at
  31  * http://creativecommons.org/publicdomain/zero/1.0/
  32  */
  33 
  34 /*
  35  * @test
  36  * @bug 4486658 5031862 8140471
  37  * @summary Checks for responsiveness of locks to timeouts.
  38  * @library /lib/testlibrary/
  39  */
  40 
  41 import static java.util.concurrent.TimeUnit.MILLISECONDS;
  42 
  43 import java.util.concurrent.CyclicBarrier;
  44 import java.util.concurrent.ExecutorService;
  45 import java.util.concurrent.Executors;
  46 import java.util.concurrent.ThreadLocalRandom;
  47 import java.util.concurrent.TimeUnit;
  48 import java.util.concurrent.locks.ReentrantLock;
  49 import jdk.testlibrary.Utils;
  50 
  51 public final class TimeoutLockLoops {
  52     static final long LONG_DELAY_MS = Utils.adjustTimeout(10_000);
  53     static final ExecutorService pool = Executors.newCachedThreadPool();
  54     static boolean print = false;
  55     static final long TIMEOUT = 10;
  56 
  57     public static void main(String[] args) throws Exception {
  58         int maxThreads = 8;
  59         if (args.length > 0)
  60             maxThreads = Integer.parseInt(args[0]);
  61 
  62         print = true;
  63 
  64         for (int i = 1; i <= maxThreads; i += (i+1) >>> 1) {
  65             System.out.print("Threads: " + i);
  66             new ReentrantLockLoop(i).test();
  67         }
  68         pool.shutdown();
  69         if (! pool.awaitTermination(LONG_DELAY_MS, MILLISECONDS))

  18  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  19  * or visit www.oracle.com if you need additional information or have any
  20  * questions.
  21  */
  22 
  23 /*
  24  * This file is available under and governed by the GNU General Public
  25  * License version 2 only, as published by the Free Software Foundation.
  26  * However, the following notice accompanied the original version of this
  27  * file:
  28  *
  29  * Written by Doug Lea with assistance from members of JCP JSR-166
  30  * Expert Group and released to the public domain, as explained at
  31  * http://creativecommons.org/publicdomain/zero/1.0/
  32  */
  33 
  34 /*
  35  * @test
  36  * @bug 4486658 5031862 8140471
  37  * @summary Checks for responsiveness of locks to timeouts.
  38  * @library /test/lib
  39  */
  40 
  41 import static java.util.concurrent.TimeUnit.MILLISECONDS;
  42 
  43 import java.util.concurrent.CyclicBarrier;
  44 import java.util.concurrent.ExecutorService;
  45 import java.util.concurrent.Executors;
  46 import java.util.concurrent.ThreadLocalRandom;
  47 import java.util.concurrent.TimeUnit;
  48 import java.util.concurrent.locks.ReentrantLock;
  49 import jdk.test.lib.Utils;
  50 
  51 public final class TimeoutLockLoops {
  52     static final long LONG_DELAY_MS = Utils.adjustTimeout(10_000);
  53     static final ExecutorService pool = Executors.newCachedThreadPool();
  54     static boolean print = false;
  55     static final long TIMEOUT = 10;
  56 
  57     public static void main(String[] args) throws Exception {
  58         int maxThreads = 8;
  59         if (args.length > 0)
  60             maxThreads = Integer.parseInt(args[0]);
  61 
  62         print = true;
  63 
  64         for (int i = 1; i <= maxThreads; i += (i+1) >>> 1) {
  65             System.out.print("Threads: " + i);
  66             new ReentrantLockLoop(i).test();
  67         }
  68         pool.shutdown();
  69         if (! pool.awaitTermination(LONG_DELAY_MS, MILLISECONDS))