test/java/rmi/server/RemoteObject/notExtending/NotExtending.java

rev 11093 : 8035117: TEST_BUG: java/rmi/server/RemoteObject/notExtending/NotExtending.java can fail with timeout
Reviewed-by: XXX

*** 28,38 ****
   *          can be successfully compared to RemoteObject instances
   *          (specifically: stubs) that contain the instance's RemoteRef.
   * @author Peter Jones
   *
   * @build NotExtending_Stub NotExtending_Skel
!  * @run main/othervm/timeout=240 NotExtending
   */
  
  
  import java.rmi.*;
  import java.rmi.server.*;
--- 28,38 ----
   *          can be successfully compared to RemoteObject instances
   *          (specifically: stubs) that contain the instance's RemoteRef.
   * @author Peter Jones
   *
   * @build NotExtending_Stub NotExtending_Skel
!  * @run main/othervm NotExtending
   */
  
  
  import java.rmi.*;
  import java.rmi.server.*;
*** 44,142 ****
      /** value of stub's hash code */
      private int hashValue;
      /** true if the hashValue field has been initialized */
      private boolean hashValueInitialized = false;
  
!     public NotExtending() throws RemoteException {
          stub = UnicastRemoteObject.exportObject(this);
          setHashValue(stub.hashCode());
      }
  
      private void setHashValue(int value) {
          hashValue = value;
          hashValueInitialized = true;
      }
  
      public int hashCode() {
          /*
!          * Test fails with a RuntimeException if the hashCode() method is
!          * called (during the export procedure) before the correct hash
!          * value has been initialized.
           */
          if (!hashValueInitialized) {
!             throw new RuntimeException(
                  "hashCode() invoked before hashValue initialized");
          }
          return hashValue;
      }
  
      public boolean equals(Object obj) {
          return stub.equals(obj);
      }
  
      public static void main(String[] args) throws Exception {
!         /*
!          * The following line is required with the JDK 1.2 VM so that the
!          * VM can exit gracefully when this test completes.  Otherwise, the
!          * conservative garbage collector will find a handle to the server
!          * object on the native stack and not clear the weak reference to
!          * it in the RMI runtime's object table.
!          */
!         Object dummy = new Object();
  
-         NotExtending server;
          try {
              /*
               * Verify that hashCode() is not invoked before it is
               * initialized.  Tests bugid 4102938.
               */
              server = new NotExtending();
              System.err.println("Server exported without invoking hashCode().");
  
              /*
               * Verify that passing stub to server's equals() method
               * returns true.
               */
!             if (server.equals(server.stub)) {
!                 System.err.println(
!                     "Passing stub to server's equals() method succeeded.");
              } else {
!                 throw new RuntimeException(
!                     "passing stub to server's equals() method failed");
              }
  
              /*
               * Verify that passing server to stub's equals() method
               * returns true.  Tests bugid 4099660.
               */
!             if (server.stub.equals(server)) {
!                 System.err.println(
!                     "Passing server to stub's equals() method succeeded.");
              } else {
!                 throw new RuntimeException(
!                     "passing server to stub's equals() method failed");
              }
- 
          } finally {
!             server = null;
!             flushCachedRefs();
!         }
!     }
! 
!     /**
!      * Force desperate garbage collection so that soft references
!      * will be cleared.
!      *
!      * This method is required with the JDK 1.1.x RMI runtime so that the
!      * VM can exit gracefully when this test completes.  See bugid 4006356.
!      */
!     public static void flushCachedRefs() {
!         java.util.Vector chain = new java.util.Vector();
!         try {
!             while (true) {
!                 int[] hungry = new int[65536];
!                 chain.addElement(hungry);
              }
-         } catch (OutOfMemoryError e) {
          }
      }
  }
--- 44,119 ----
      /** value of stub's hash code */
      private int hashValue;
      /** true if the hashValue field has been initialized */
      private boolean hashValueInitialized = false;
  
!     // no declared constructor - rely on implicit no-arg contructor
! 
!     public Remote export() throws RemoteException {
          stub = UnicastRemoteObject.exportObject(this);
          setHashValue(stub.hashCode());
+         return stub;
+     }
+ 
+     public void unexport() throws RemoteException {
+         UnicastRemoteObject.unexportObject(this, true);
      }
  
      private void setHashValue(int value) {
          hashValue = value;
          hashValueInitialized = true;
      }
  
      public int hashCode() {
          /*
!          * Test fails if the hashCode() method is called (during export)
!          * before the correct hash value has been initialized.
           */
          if (!hashValueInitialized) {
!             throw new AssertionError(
                  "hashCode() invoked before hashValue initialized");
          }
          return hashValue;
      }
  
      public boolean equals(Object obj) {
          return stub.equals(obj);
      }
  
      public static void main(String[] args) throws Exception {
!         NotExtending server = null;
  
          try {
              /*
               * Verify that hashCode() is not invoked before it is
               * initialized.  Tests bugid 4102938.
               */
              server = new NotExtending();
+             Remote stub = server.export();
              System.err.println("Server exported without invoking hashCode().");
  
              /*
               * Verify that passing stub to server's equals() method
               * returns true.
               */
!             if (server.equals(stub)) {
!                 System.err.println("server.equals(stub) returns true");
              } else {
!                 throw new AssertionError("server.equals(stub) returns false");
              }
  
              /*
               * Verify that passing server to stub's equals() method
               * returns true.  Tests bugid 4099660.
               */
!             if (stub.equals(server)) {
!                 System.err.println("stub.equals(server) returns true");
              } else {
!                 throw new AssertionError("stub.equals(server) returns false");
              }
          } finally {
!             if (server != null) {
!                 server.unexport();
              }
          }
      }
  }