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test/jdk/java/nio/channels/Selector/RegisterDuringSelect.java

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  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 /* @test
  25  * @bug 8201315
  26  * @summary Test that channels can be registered, interest ops can changed,
  27  *          and keys cancelled while a selection operation is in progress.
  28  */
  29 
  30 import java.io.IOException;

  31 import java.nio.channels.Pipe;
  32 import java.nio.channels.SelectionKey;
  33 import java.nio.channels.Selector;
  34 import java.util.concurrent.Callable;
  35 import java.util.concurrent.ExecutorService;
  36 import java.util.concurrent.Executors;
  37 import java.util.concurrent.Future;
  38 import java.util.concurrent.Phaser;
  39 
  40 public class RegisterDuringSelect {
  41 
  42     static Callable<Void> selectLoop(Selector sel, Phaser barrier) {
  43         return new Callable<Void>() {
  44             @Override
  45             public Void call() throws IOException {
  46                 for (;;) {

  47                     sel.select();



  48                     if (sel.isOpen()) {
  49                         barrier.arriveAndAwaitAdvance();

  50                     } else {
  51                         // closed
  52                         return null;
  53                     }
  54                 }
  55             }
  56         };
  57     }
  58     /**
  59      * Invoke register, interestOps, and cancel concurrently with a thread
  60      * doing a selection operation
  61      */
  62     public static void main(String args[]) throws Exception {
  63         Future<Void> result;
  64 
  65         ExecutorService pool = Executors.newFixedThreadPool(1);
  66         try (Selector sel = Selector.open()) {
  67             Phaser barrier = new Phaser(2);
  68 
  69             // submit task to do the select loop




  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 /* @test
  25  * @bug 8201315
  26  * @summary Test that channels can be registered, interest ops can changed,
  27  *          and keys cancelled while a selection operation is in progress.
  28  */
  29 
  30 import java.io.IOException;
  31 import java.nio.channels.ClosedSelectorException;
  32 import java.nio.channels.Pipe;
  33 import java.nio.channels.SelectionKey;
  34 import java.nio.channels.Selector;
  35 import java.util.concurrent.Callable;
  36 import java.util.concurrent.ExecutorService;
  37 import java.util.concurrent.Executors;
  38 import java.util.concurrent.Future;
  39 import java.util.concurrent.Phaser;
  40 
  41 public class RegisterDuringSelect {
  42 
  43     static Callable<Void> selectLoop(Selector sel, Phaser barrier) {
  44         return new Callable<Void>() {
  45             @Override
  46             public Void call() throws IOException {
  47                 for (;;) {
  48                     try {
  49                         sel.select();
  50                     } catch (ClosedSelectorException ignore) {
  51                         return null;
  52                     }
  53                     if (sel.isOpen()) {
  54                         barrier.arriveAndAwaitAdvance();
  55                         System.out.println("phaser in executor ...");
  56                     } else {
  57                         // closed
  58                         return null;
  59                     }
  60                 }
  61             }
  62         };
  63     }
  64     /**
  65      * Invoke register, interestOps, and cancel concurrently with a thread
  66      * doing a selection operation
  67      */
  68     public static void main(String args[]) throws Exception {
  69         Future<Void> result;
  70 
  71         ExecutorService pool = Executors.newFixedThreadPool(1);
  72         try (Selector sel = Selector.open()) {
  73             Phaser barrier = new Phaser(2);
  74 
  75             // submit task to do the select loop


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