test/java/rmi/server/Unreferenced/unreferencedContext/UnreferencedContext.java

Print this page




  24 /* @test
  25  * @bug 4171278
  26  * @summary A remote object's unreferenced() method should be invoked with the
  27  * context class loader set to the same context class loader that would be set
  28  * when remote calls for that object are being executed: the object's class's
  29  * class loader, or the context class loader set when the remote object was
  30  * exported, if it is a child of the remote object's class loader.
  31  * @author Peter Jones
  32  *
  33  * @bug 4214123
  34  * @summary Unreferenced.unreferenced(...) threads should run in the nonSystem group.
  35  *          To complete the fix for, 4182104, RMI unreferenced threads should also
  36  *          run in the nonSystem so that they do not need permissions to modify the
  37  *          system thread group.
  38  *
  39  * @author Laird Dornin
  40  *
  41  * @library ../../../testlibrary
  42  * @build UnreferencedContext
  43  * @build UnreferencedContext_Stub

  44  * @run main/othervm/timeout=120 UnreferencedContext
  45  */
  46 
  47 import java.net.*;
  48 import java.rmi.*;
  49 import java.rmi.registry.*;
  50 import java.rmi.server.*;
  51 
  52 public class UnreferencedContext implements Remote, Unreferenced, Runnable {
  53 
  54     private final static String BINDING = "UnreferencedContext";
  55     private final static long GC_INTERVAL = 6000;
  56     private final static long TIMEOUT = 60000;
  57 
  58     private Object lock = new Object();
  59     private boolean unreferencedInvoked = false;
  60     private ClassLoader unreferencedContext;
  61 
  62     public void run() {
  63         System.err.println("unreferenced method created thread succesfully");


 102              * don't *accidentally* inherit it when making the unreferenced()
 103              * callback.
 104              */
 105             UnicastRemoteObject.exportObject(obj);
 106             UnicastRemoteObject.unexportObject(obj, true);
 107 
 108             /*
 109              * Now create special context class loader before exporting the
 110              * remote object for real, so that it should be set when the
 111              * object's unreferenced() method is called.
 112              */
 113             ClassLoader intendedContext = new URLClassLoader(new URL[0]);
 114             Thread.currentThread().setContextClassLoader(intendedContext);
 115             System.err.println(
 116                 "created and set intended context class loader: " +
 117                 intendedContext);
 118 
 119             UnicastRemoteObject.exportObject(obj);
 120             System.err.println("exported remote object");
 121 
 122             LocateRegistry.createRegistry(TestLibrary.REGISTRY_PORT);

 123             System.err.println("created registry");
 124 
 125             Registry registry = LocateRegistry.getRegistry("", TestLibrary.REGISTRY_PORT);
 126             registry.bind(BINDING, obj);
 127             System.err.println("bound remote object in registry");
 128 
 129             synchronized (obj.lock) {
 130                 registry.unbind(BINDING);
 131                 System.err.println("unbound remote object from registry; " +
 132                     "waiting for unreferenced() callback...");
 133                 /*
 134                  * This incantation seems sufficient to work around the
 135                  * ramifications of 4164696, so that this test will actually
 136                  * prove something useful about 1.2Beta4 or 1.2FCS before
 137                  * 4171278 was fixed.
 138                  */
 139                 for (int i = 0; i < 10; i++) {
 140                     System.gc();
 141                     obj.lock.wait(TIMEOUT / 10);
 142                     if (obj.unreferencedInvoked) {
 143                         break;
 144                     }
 145                 }




  24 /* @test
  25  * @bug 4171278
  26  * @summary A remote object's unreferenced() method should be invoked with the
  27  * context class loader set to the same context class loader that would be set
  28  * when remote calls for that object are being executed: the object's class's
  29  * class loader, or the context class loader set when the remote object was
  30  * exported, if it is a child of the remote object's class loader.
  31  * @author Peter Jones
  32  *
  33  * @bug 4214123
  34  * @summary Unreferenced.unreferenced(...) threads should run in the nonSystem group.
  35  *          To complete the fix for, 4182104, RMI unreferenced threads should also
  36  *          run in the nonSystem so that they do not need permissions to modify the
  37  *          system thread group.
  38  *
  39  * @author Laird Dornin
  40  *
  41  * @library ../../../testlibrary
  42  * @build UnreferencedContext
  43  * @build UnreferencedContext_Stub
  44  * @build TestLibrary
  45  * @run main/othervm/timeout=120 UnreferencedContext
  46  */
  47 
  48 import java.net.*;
  49 import java.rmi.*;
  50 import java.rmi.registry.*;
  51 import java.rmi.server.*;
  52 
  53 public class UnreferencedContext implements Remote, Unreferenced, Runnable {
  54 
  55     private final static String BINDING = "UnreferencedContext";
  56     private final static long GC_INTERVAL = 6000;
  57     private final static long TIMEOUT = 60000;
  58 
  59     private Object lock = new Object();
  60     private boolean unreferencedInvoked = false;
  61     private ClassLoader unreferencedContext;
  62 
  63     public void run() {
  64         System.err.println("unreferenced method created thread succesfully");


 103              * don't *accidentally* inherit it when making the unreferenced()
 104              * callback.
 105              */
 106             UnicastRemoteObject.exportObject(obj);
 107             UnicastRemoteObject.unexportObject(obj, true);
 108 
 109             /*
 110              * Now create special context class loader before exporting the
 111              * remote object for real, so that it should be set when the
 112              * object's unreferenced() method is called.
 113              */
 114             ClassLoader intendedContext = new URLClassLoader(new URL[0]);
 115             Thread.currentThread().setContextClassLoader(intendedContext);
 116             System.err.println(
 117                 "created and set intended context class loader: " +
 118                 intendedContext);
 119 
 120             UnicastRemoteObject.exportObject(obj);
 121             System.err.println("exported remote object");
 122 
 123             Registry registry1 = TestLibrary.createRegistryOnUnusedPort();
 124             int port = TestLibrary.getRegistryPort(registry1);
 125             System.err.println("created registry");
 126 
 127             Registry registry = LocateRegistry.getRegistry("", port);
 128             registry.bind(BINDING, obj);
 129             System.err.println("bound remote object in registry");
 130 
 131             synchronized (obj.lock) {
 132                 registry.unbind(BINDING);
 133                 System.err.println("unbound remote object from registry; " +
 134                     "waiting for unreferenced() callback...");
 135                 /*
 136                  * This incantation seems sufficient to work around the
 137                  * ramifications of 4164696, so that this test will actually
 138                  * prove something useful about 1.2Beta4 or 1.2FCS before
 139                  * 4171278 was fixed.
 140                  */
 141                 for (int i = 0; i < 10; i++) {
 142                     System.gc();
 143                     obj.lock.wait(TIMEOUT / 10);
 144                     if (obj.unreferencedInvoked) {
 145                         break;
 146                     }
 147                 }