8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 6207928 6328220 6378321 6625723
  27  * @summary Recursive lock invariant sanity checks
  28  * @library /lib/testlibrary/
  29  * @author Martin Buchholz
  30  */
  31 
  32 import static java.util.concurrent.TimeUnit.MILLISECONDS;
  33 
  34 import java.io.ByteArrayInputStream;
  35 import java.io.ByteArrayOutputStream;
  36 import java.io.IOException;
  37 import java.io.InputStream;
  38 import java.io.ObjectInputStream;
  39 import java.io.ObjectOutputStream;
  40 import java.util.Random;
  41 import java.util.concurrent.CyclicBarrier;
  42 import java.util.concurrent.ExecutorService;
  43 import java.util.concurrent.Executors;
  44 import java.util.concurrent.TimeUnit;
  45 import java.util.concurrent.locks.Lock;
  46 import java.util.concurrent.locks.ReentrantLock;
  47 import java.util.concurrent.locks.ReentrantReadWriteLock;
  48 import jdk.testlibrary.Utils;
  49 
  50 // I am the Cownt, and I lahve to cownt.
  51 public class Count {
  52     static final long LONG_DELAY_MS = Utils.adjustTimeout(10_000);
  53     final Random rnd = new Random();
  54 
  55     void lock(Lock lock) {
  56         try {
  57             switch (rnd.nextInt(4)) {
  58             case 0: lock.lock(); break;
  59             case 1: lock.lockInterruptibly(); break;
  60             case 2: check(lock.tryLock()); break;
  61             case 3: check(lock.tryLock(45, TimeUnit.MINUTES)); break;
  62             }
  63         } catch (Throwable t) { unexpected(t); }
  64     }
  65 
  66     void test(String[] args) throws Throwable {
  67         for (boolean fair : new boolean[] { true, false })
  68             for (boolean serialClone : new boolean[] { true, false }) {

   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 6207928 6328220 6378321 6625723
  27  * @summary Recursive lock invariant sanity checks
  28  * @library /test/lib
  29  * @author Martin Buchholz
  30  */
  31 
  32 import static java.util.concurrent.TimeUnit.MILLISECONDS;
  33 
  34 import java.io.ByteArrayInputStream;
  35 import java.io.ByteArrayOutputStream;
  36 import java.io.IOException;
  37 import java.io.InputStream;
  38 import java.io.ObjectInputStream;
  39 import java.io.ObjectOutputStream;
  40 import java.util.Random;
  41 import java.util.concurrent.CyclicBarrier;
  42 import java.util.concurrent.ExecutorService;
  43 import java.util.concurrent.Executors;
  44 import java.util.concurrent.TimeUnit;
  45 import java.util.concurrent.locks.Lock;
  46 import java.util.concurrent.locks.ReentrantLock;
  47 import java.util.concurrent.locks.ReentrantReadWriteLock;
  48 import jdk.test.lib.Utils;
  49 
  50 // I am the Cownt, and I lahve to cownt.
  51 public class Count {
  52     static final long LONG_DELAY_MS = Utils.adjustTimeout(10_000);
  53     final Random rnd = new Random();
  54 
  55     void lock(Lock lock) {
  56         try {
  57             switch (rnd.nextInt(4)) {
  58             case 0: lock.lock(); break;
  59             case 1: lock.lockInterruptibly(); break;
  60             case 2: check(lock.tryLock()); break;
  61             case 3: check(lock.tryLock(45, TimeUnit.MINUTES)); break;
  62             }
  63         } catch (Throwable t) { unexpected(t); }
  64     }
  65 
  66     void test(String[] args) throws Throwable {
  67         for (boolean fair : new boolean[] { true, false })
  68             for (boolean serialClone : new boolean[] { true, false }) {