--- old/src/java.corba/share/classes/com/sun/corba/se/impl/oa/poa/POAPolicyMediatorImpl_R_USM.java 2018-01-30 20:18:45.000000000 -0500 +++ /dev/null 2018-01-30 20:18:45.000000000 -0500 @@ -1,381 +0,0 @@ -/* - * Copyright (c) 2002, 2015, Oracle and/or its affiliates. All rights reserved. - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This code is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 only, as - * published by the Free Software Foundation. Oracle designates this - * particular file as subject to the "Classpath" exception as provided - * by Oracle in the LICENSE file that accompanied this code. - * - * This code is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * version 2 for more details (a copy is included in the LICENSE file that - * accompanied this code). - * - * You should have received a copy of the GNU General Public License version - * 2 along with this work; if not, write to the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. - * - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA - * or visit www.oracle.com if you need additional information or have any - * questions. - */ - -package com.sun.corba.se.impl.oa.poa ; - -import java.util.Set ; -import org.omg.CORBA.SystemException ; - -import org.omg.PortableServer.ServantActivator ; -import org.omg.PortableServer.Servant ; -import org.omg.PortableServer.ServantManager ; -import org.omg.PortableServer.ForwardRequest ; -import org.omg.PortableServer.POAPackage.WrongPolicy ; -import org.omg.PortableServer.POAPackage.ObjectNotActive ; -import org.omg.PortableServer.POAPackage.ServantNotActive ; -import org.omg.PortableServer.POAPackage.ObjectAlreadyActive ; -import org.omg.PortableServer.POAPackage.ServantAlreadyActive ; -import org.omg.PortableServer.POAPackage.NoServant ; - -import com.sun.corba.se.impl.orbutil.concurrent.SyncUtil ; -import com.sun.corba.se.impl.orbutil.ORBUtility ; -import com.sun.corba.se.impl.orbutil.ORBConstants ; - -import com.sun.corba.se.impl.oa.NullServantImpl ; - -import com.sun.corba.se.impl.javax.rmi.CORBA.Util ; - -import com.sun.corba.se.spi.oa.OAInvocationInfo ; -import com.sun.corba.se.spi.oa.NullServant ; - -/** Implementation of POARequesHandler that provides policy specific - * operations on the POA. - */ -public class POAPolicyMediatorImpl_R_USM extends POAPolicyMediatorBase_R { - protected ServantActivator activator ; - - POAPolicyMediatorImpl_R_USM( Policies policies, POAImpl poa ) - { - // assert policies.retainServants() - super( policies, poa ) ; - activator = null ; - - if (!policies.useServantManager()) - throw poa.invocationWrapper().policyMediatorBadPolicyInFactory() ; - } - - /* This handles a rather subtle bug (4939892). The problem is that - * enter will wait on the entry if it is being etherealized. When the - * deferred state transition completes, the entry is no longer in the - * AOM, and so we need to get a new entry, otherwise activator.incarnate - * will be called twice, once for the old entry, and again when a new - * entry is created. This fix also required extending the FSM StateEngine - * to allow actions to throw exceptions, and adding a new state in the - * AOMEntry FSM to detect this condition. - */ - private AOMEntry enterEntry( ActiveObjectMap.Key key ) - { - AOMEntry result = null ; - boolean failed ; - do { - failed = false ; - result = activeObjectMap.get(key) ; - - try { - result.enter() ; - } catch (Exception exc) { - failed = true ; - } - } while (failed) ; - - return result ; - } - - protected java.lang.Object internalGetServant( byte[] id, - String operation ) throws ForwardRequest - { - if (poa.getDebug()) { - ORBUtility.dprint( this, - "Calling POAPolicyMediatorImpl_R_USM.internalGetServant " + - "for poa " + poa + " operation=" + operation ) ; - } - - try { - ActiveObjectMap.Key key = new ActiveObjectMap.Key( id ) ; - AOMEntry entry = enterEntry(key) ; - java.lang.Object servant = activeObjectMap.getServant( entry ) ; - if (servant != null) { - if (poa.getDebug()) { - ORBUtility.dprint( this, - "internalGetServant: servant already activated" ) ; - } - - return servant ; - } - - if (activator == null) { - if (poa.getDebug()) { - ORBUtility.dprint( this, - "internalGetServant: no servant activator in POA" ) ; - } - - entry.incarnateFailure() ; - throw poa.invocationWrapper().poaNoServantManager() ; - } - - // Drop the POA lock during the incarnate call and - // re-acquire it afterwards. The entry state machine - // prevents more than one thread from executing the - // incarnate method at a time within the same POA. - try { - if (poa.getDebug()) { - ORBUtility.dprint( this, - "internalGetServant: upcall to incarnate" ) ; - } - - poa.unlock() ; - - servant = activator.incarnate(id, poa); - - if (servant == null) - servant = new NullServantImpl( - poa.omgInvocationWrapper().nullServantReturned() ) ; - } catch (ForwardRequest freq) { - if (poa.getDebug()) { - ORBUtility.dprint( this, - "internalGetServant: incarnate threw ForwardRequest" ) ; - } - - throw freq ; - } catch (SystemException exc) { - if (poa.getDebug()) { - ORBUtility.dprint( this, - "internalGetServant: incarnate threw SystemException " + exc ) ; - } - - throw exc ; - } catch (Throwable exc) { - if (poa.getDebug()) { - ORBUtility.dprint( this, - "internalGetServant: incarnate threw Throwable " + exc ) ; - } - - throw poa.invocationWrapper().poaServantActivatorLookupFailed( - exc ) ; - } finally { - poa.lock() ; - - // servant == null means incarnate threw an exception, - // while servant instanceof NullServant means incarnate returned a - // null servant. Either case is an incarnate failure to the - // entry state machine. - if ((servant == null) || (servant instanceof NullServant)) { - if (poa.getDebug()) { - ORBUtility.dprint( this, - "internalGetServant: incarnate failed" ) ; - } - - // XXX Does the AOM leak in this case? Yes, - // but the problem is hard to fix. There may be - // a number of threads waiting for the state to change - // from INCARN to something else, which is VALID or - // INVALID, depending on the incarnate result. - // The activeObjectMap.get() call above creates an - // ActiveObjectMap.Entry if one does not already exist, - // and stores it in the keyToEntry map in the AOM. - entry.incarnateFailure() ; - } else { - // here check for unique_id policy, and if the servant - // is already registered for a different ID, then throw - // OBJ_ADAPTER exception, else activate it. Section 11.3.5.1 - // 99-10-07.pdf - if (isUnique) { - // check if the servant already is associated with some id - if (activeObjectMap.contains((Servant)servant)) { - if (poa.getDebug()) { - ORBUtility.dprint( this, - "internalGetServant: servant already assigned to ID" ) ; - } - - entry.incarnateFailure() ; - throw poa.invocationWrapper().poaServantNotUnique() ; - } - } - - if (poa.getDebug()) { - ORBUtility.dprint( this, - "internalGetServant: incarnate complete" ) ; - } - - entry.incarnateComplete() ; - activateServant(key, entry, (Servant)servant); - } - } - - return servant ; - } finally { - if (poa.getDebug()) { - ORBUtility.dprint( this, - "Exiting POAPolicyMediatorImpl_R_USM.internalGetServant " + - "for poa " + poa ) ; - } - } - } - - public void returnServant() - { - OAInvocationInfo info = orb.peekInvocationInfo(); - byte[] id = info.id() ; - ActiveObjectMap.Key key = new ActiveObjectMap.Key( id ) ; - AOMEntry entry = activeObjectMap.get( key ) ; - entry.exit() ; - } - - public void etherealizeAll() - { - if (activator != null) { - Set keySet = activeObjectMap.keySet() ; - - // Copy the elements in the set to an array to avoid - // changes in the set due to concurrent modification - ActiveObjectMap.Key[] keys = - (ActiveObjectMap.Key[])keySet.toArray( - new ActiveObjectMap.Key[ keySet.size() ] ) ; - - for (int ctr=0; ctr