1 /*
   2  * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.jndi.cosnaming;
  27 
  28 import org.omg.CORBA.ORB;
  29 
  30 /**
  31  * This class keeps track of references to the shared ORB object
  32  * and destroys it when no more references are made to the ORB
  33  * object. This object is created for each ORB object that CNCtx
  34  * creates.
  35  */
  36 class OrbReuseTracker {
  37 
  38     int referenceCnt;
  39     ORB orb;
  40 
  41     private static final boolean debug = false;
  42 
  43     OrbReuseTracker(ORB orb) {
  44         this.orb = orb;
  45         referenceCnt++;
  46         if (debug) {
  47              System.out.println("New OrbReuseTracker created");
  48         }
  49     }
  50 
  51     synchronized void incRefCount() {
  52         referenceCnt++;
  53         if (debug) {
  54              System.out.println("Increment orb ref count to:" + referenceCnt);
  55         }
  56     }
  57 
  58     synchronized void decRefCount() {
  59         referenceCnt--;
  60         if (debug) {
  61              System.out.println("Decrement orb ref count to:" + referenceCnt);
  62         }
  63         if ((referenceCnt == 0)) {
  64             if (debug) {
  65                 System.out.println("Destroying the ORB");
  66             }
  67             orb.destroy();
  68         }
  69     }
  70 }