test/java/util/concurrent/locks/ReentrantLock/SimpleReentrantLockLoops.java

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  17  *
  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
  37  * @compile -source 1.5 SimpleReentrantLockLoops.java
  38  * @run main/timeout=4500 SimpleReentrantLockLoops
  39  * @summary multiple threads using a single lock
  40  */
  41 
  42 import java.util.concurrent.*;
  43 import java.util.concurrent.locks.*;
  44 import java.util.*;
  45 
  46 public final class SimpleReentrantLockLoops {
  47     static final ExecutorService pool = Executors.newCachedThreadPool();
  48     static final LoopHelpers.SimpleRandom rng = new LoopHelpers.SimpleRandom();
  49     static boolean print = false;
  50     static int iters = 1000000;
  51 
  52     public static void main(String[] args) throws Exception {
  53         int maxThreads = 5;
  54         if (args.length > 0)
  55             maxThreads = Integer.parseInt(args[0]);
  56 
  57         print = true;




  17  *
  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
  37  * @compile SimpleReentrantLockLoops.java
  38  * @run main/timeout=4500 SimpleReentrantLockLoops
  39  * @summary multiple threads using a single lock
  40  */
  41 
  42 import java.util.concurrent.*;
  43 import java.util.concurrent.locks.*;
  44 import java.util.*;
  45 
  46 public final class SimpleReentrantLockLoops {
  47     static final ExecutorService pool = Executors.newCachedThreadPool();
  48     static final LoopHelpers.SimpleRandom rng = new LoopHelpers.SimpleRandom();
  49     static boolean print = false;
  50     static int iters = 1000000;
  51 
  52     public static void main(String[] args) throws Exception {
  53         int maxThreads = 5;
  54         if (args.length > 0)
  55             maxThreads = Integer.parseInt(args[0]);
  56 
  57         print = true;