- /*
- * @(#)RepositoryIdCache_1_3_1.java 1.3 03/01/23
- *
- * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
- * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
- */
-
- package com.sun.corba.se.internal.orbutil;
-
- import java.util.Stack;
- import java.util.Hashtable;
- import java.util.EmptyStackException;
- import java.util.Enumeration;
-
- // Really limited pool - in this case just creating several at a time...
- class RepositoryIdPool_1_3_1 extends Stack {
-
- private static int MAX_CACHE_SIZE = 4;
- private RepositoryIdCache_1_3_1 cache;
-
- public final synchronized RepositoryId_1_3_1 popId() {
-
- try {
- return (RepositoryId_1_3_1)super.pop();
- }
- catch(EmptyStackException e) {
- increasePool(5);
- return (RepositoryId_1_3_1)super.pop();
- }
-
- }
-
- // Pool management
- final void increasePool(int size) {
- //if (cache.size() <= MAX_CACHE_SIZE)
- for (int i = size; i > 0; i--)
- push(new RepositoryId_1_3_1());
- /*
- // _REVISIT_ This will not work w/out either thread tracing or weak references. I am
- // betting that thread tracing almost completely negates benefit of reuse. Until either
- // 1.2 only inclusion or proof to the contrary, I'll leave it this way...
- else {
- int numToReclaim = cache.size() / 2;
- Enumeration keys = cache.keys();
- Enumeration elements = cache.elements();
- for (int i = numToReclaim; i > 0; i--) {
- Object key = keys.nextElement();
- Object element = elements.nextElement();
-
- push(element);
- cache.remove(key);
- }
- }
- */
- }
-
- final void setCaches(RepositoryIdCache_1_3_1 cache) {
- this.cache = cache;
- }
-
- }
-
- public class RepositoryIdCache_1_3_1 extends Hashtable {
-
- private RepositoryIdPool_1_3_1 pool = new RepositoryIdPool_1_3_1();
-
- public RepositoryIdCache_1_3_1() {
- pool.setCaches(this);
- }
-
- public final synchronized RepositoryId_1_3_1 getId(String key) {
- RepositoryId_1_3_1 repId = (RepositoryId_1_3_1)super.get(key);
-
- if (repId != null)
- return repId;
- else {
- //repId = pool.popId().init(key);
- repId = new RepositoryId_1_3_1(key);
- put(key, repId);
- return repId;
- }
-
- }
- }
-
-