JDK 11 java.xml.crypto.jmod - XML Crypto Module

JDK 11 java.xml.crypto.jmod is the JMOD file for JDK 11 XML (eXtensible Markup Language) Crypto module.

JDK 11 XML Crypto module compiled class files are stored in \fyicenter\jdk-11.0.1\jmods\java.xml.crypto.jmod.

JDK 11 XML Crypto module compiled class files are also linked and stored in the \fyicenter\jdk-11.0.1\lib\modules JImage file.

JDK 11 XML Crypto module source code files are stored in \fyicenter\jdk-11.0.1\lib\src.zip\java.xml.crypto.

You can click and view the content of each source code file in the list below.

✍: FYIcenter

com/sun/org/apache/xml/internal/security/utils/WeakObjectPool.java

/*
 * Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package com.sun.org.apache.xml.internal.security.utils;

import java.lang.ref.WeakReference;
import java.util.Collections;
import java.util.Map;
import java.util.WeakHashMap;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingDeque;

/**
 * Abstract base class for pooling objects.  The two public methods are
 * {@link #getObject()} and ({@link #repool(Object)}.  Objects are held through
 * weak references so even objects that are not repooled are subject to garbage collection.
 *
 * Subclasses must implement the abstract {@link #createObject()}.
 * <p>
 *
 * Internally, the pool is stored in a java.util.concurrent.LinkedBlockingDeque
 * instance.
 */
public abstract class WeakObjectPool<T, E extends Throwable> {

    private static final Integer MARKER_VALUE = Integer.MAX_VALUE;//once here rather than auto-box it?

    /** created, available objects to be checked out to clients */
    private final BlockingQueue<WeakReference<T>> available;

    /**
     * Synchronized, identity map of loaned out objects (WeakHashMap);
     * use to ensure we repool only object originating from here
     * and do it once.
     */
    private final Map<T, Integer> onLoan;

    /**
     * The lone constructor.
     */
    protected WeakObjectPool() {
        //alternative implementations: ArrayBlockingQueue has a fixed size
        //  PriorityBlockingQueue: requires a dummy comparator; less memory but more overhead
        available = new LinkedBlockingDeque<WeakReference<T>>();
        this.onLoan = Collections.synchronizedMap(new WeakHashMap<T, Integer>());
    }

    /**
     * Called whenever a new pool object is desired; subclasses must implement.
     *
     * @return object of the type desired by the subclass
     * @throws E Throwable's subclass
     */
    protected abstract T createObject() throws E;


    /**
     * Subclasses can subclass to return a more specific type.
     *
     * @return an object from the pool; will block until an object is available
     * @throws E
     */
    public T getObject() throws E {
        WeakReference<T> ref;
        T retValue = null;
        do {
            //remove any stale entries as well
            ref = available.poll();
        } while (ref != null && (retValue = ref.get()) == null);

        if (retValue == null) {
            //empty pool; create & add new one
            retValue = createObject();
        }
        onLoan.put(retValue, MARKER_VALUE);
        return retValue;
    }


    /**
     * Adds the given object to the pool, provided that the object
     * was created by this pool.
     *
     * @param obj the object to return to the pool
     * @return whether the object was successfully added as available
     */
    public boolean repool(T obj) {
        if (obj != null && onLoan.containsKey(obj)) {
            //synchronize to protect against a caller returning the same object again...
            synchronized (obj) {
                //...and check to see that it was removed
                if (onLoan.remove(obj) != null) {
                    return available.offer(new WeakReference<T>(obj));
                }
            }
        }
        return false;
    }
}

com/sun/org/apache/xml/internal/security/utils/WeakObjectPool.java

 

Or download all of them as a single archive file:

File name: java.xml.crypto-11.0.1-src.zip
File size: 539662 bytes
Release date: 2018-11-04
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JDK 11 jdk.accessibility.jmod - Accessibility Module

JDK 11 java.xml.jmod - XML Module

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