jdk8-mips64-public/corba: src/share/classes/com/sun/corba/se/impl/orbutil/RepositoryIdCache_1

     1 /*

     2  * Copyright (c) 2000, 2002, 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  * Licensed Materials - Property of IBM

    27  * RMI-IIOP v1.0

    28  * Copyright IBM Corp. 1998 1999  All Rights Reserved

    29  *

    30  */

    32 package com.sun.corba.se.impl.orbutil;

    34 import java.util.Stack;

    35 import java.util.Hashtable;

    36 import java.util.EmptyStackException;

    37 import java.util.Enumeration;

    39 // Really limited pool - in this case just creating several at a time...

    40 class RepositoryIdPool_1_3 extends Stack {

    42     private static int MAX_CACHE_SIZE = 4;

    43     private RepositoryIdCache_1_3 cache;

    45     public final synchronized RepositoryId_1_3 popId() {

    47         try {

    48             return (RepositoryId_1_3)super.pop();

    49         }

    50         catch(EmptyStackException e) {

    51             increasePool(5);

    52             return (RepositoryId_1_3)super.pop();

    53         }

    55     }

    57     // Pool management

    58     final void increasePool(int size) {

    59         //if (cache.size() <= MAX_CACHE_SIZE)

    60         for (int i = size; i > 0; i--)

    61             push(new RepositoryId_1_3());

    62         /*

    63           // _REVISIT_ This will not work w/out either thread tracing or weak references.  I am

    64           // betting that thread tracing almost completely negates benefit of reuse.  Until either

    65           // 1.2 only inclusion or proof to the contrary, I'll leave it this way...

    66           else {

    67           int numToReclaim = cache.size() / 2;

    68           Enumeration keys = cache.keys();

    69           Enumeration elements = cache.elements();

    70           for (int i = numToReclaim; i > 0; i--) {

    71           Object key = keys.nextElement();

    72           Object element = elements.nextElement();

    74           push(element);

    75           cache.remove(key);

    76           }

    77           }

    78         */

    79     }

    81     final void setCaches(RepositoryIdCache_1_3 cache) {

    82         this.cache = cache;

    83     }

    85 }

    87 public class RepositoryIdCache_1_3 extends Hashtable {

    89     private RepositoryIdPool_1_3 pool = new RepositoryIdPool_1_3();

    91     public RepositoryIdCache_1_3() {

    92         pool.setCaches(this);

    93     }

    95     public final synchronized RepositoryId_1_3 getId(String key) {

    96         RepositoryId_1_3 repId = (RepositoryId_1_3)super.get(key);

    98         if (repId != null)

    99             return repId;

   100         else {

   101             //repId = pool.popId().init(key);

   102             repId = new RepositoryId_1_3(key);

   103             put(key, repId);

   104             return repId;

   105         }

   107     }

   108 }

src/share/classes/com/sun/corba/se/impl/orbutil/RepositoryIdCache_1_3.java@b2fff4b7e8cd