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test/java/util/WeakHashMap/GCDuringIteration.java

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  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 6499848
  27  * @ignore until 6842353 is resolved
  28  * @summary Check that iterators work properly in the presence of
  29  *          concurrent finalization and removal of elements.

  30  */
  31 
  32 import java.util.*;
  33 import java.util.concurrent.CountDownLatch;
  34 
  35 public class GCDuringIteration {
  36     private static void waitForFinalizersToRun() {
  37         for (int i = 0; i < 2; i++)
  38             tryWaitForFinalizersToRun();
  39     }
  40 
  41     private static void tryWaitForFinalizersToRun() {
  42         System.gc();
  43         final CountDownLatch fin = new CountDownLatch(1);
  44         new Object() { protected void finalize() { fin.countDown(); }};
  45         System.gc();
  46         try { fin.await(); }
  47         catch (InterruptedException ie) { throw new Error(ie); }
  48     }
  49 




  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 6499848
  27  * @ignore until 6842353 is resolved
  28  * @summary Check that iterators work properly in the presence of
  29  *          concurrent finalization and removal of elements.
  30  * @key randomness
  31  */
  32 
  33 import java.util.*;
  34 import java.util.concurrent.CountDownLatch;
  35 
  36 public class GCDuringIteration {
  37     private static void waitForFinalizersToRun() {
  38         for (int i = 0; i < 2; i++)
  39             tryWaitForFinalizersToRun();
  40     }
  41 
  42     private static void tryWaitForFinalizersToRun() {
  43         System.gc();
  44         final CountDownLatch fin = new CountDownLatch(1);
  45         new Object() { protected void finalize() { fin.countDown(); }};
  46         System.gc();
  47         try { fin.await(); }
  48         catch (InterruptedException ie) { throw new Error(ie); }
  49     }
  50 


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