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JDK 17 java.base.jmod - Base Module
JDK 17 java.base.jmod is the JMOD file for JDK 17 Base module.
JDK 17 Base module compiled class files are stored in \fyicenter\jdk-17.0.5\jmods\java.base.jmod.
JDK 17 Base module compiled class files are also linked and stored in the \fyicenter\jdk-17.0.5\lib\modules JImage file.
JDK 17 Base module source code files are stored in \fyicenter\jdk-17.0.5\lib\src.zip\java.base.
You can click and view the content of each source code file in the list below.
✍: FYIcenter
⏎ java/lang/ref/PhantomReference.java
/* * Copyright (c) 1997, 2020, Oracle and/or its affiliates. All rights reserved. * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. * * * * * * * * * * * * * * * * * * * * */ package java.lang.ref; import jdk.internal.vm.annotation.IntrinsicCandidate; /** * Phantom reference objects, which are enqueued after the collector * determines that their referents may otherwise be reclaimed. Phantom * references are most often used to schedule post-mortem cleanup actions. * * <p> Suppose the garbage collector determines at a certain point in time * that an object is <a href="package-summary.html#reachability"> * phantom reachable</a>. At that time it will atomically clear * all phantom references to that object and all phantom references to * any other phantom-reachable objects from which that object is reachable. * At the same time or at some later time it will enqueue those newly-cleared * phantom references that are registered with reference queues. * * <p> In order to ensure that a reclaimable object remains so, the referent of * a phantom reference may not be retrieved: The {@code get} method of a * phantom reference always returns {@code null}. * The {@link #refersTo(Object) refersTo} method can be used to test * whether some object is the referent of a phantom reference. * * @author Mark Reinhold * @since 1.2 */ public class PhantomReference<T> extends Reference<T> { /** * Returns this reference object's referent. Because the referent of a * phantom reference is always inaccessible, this method always returns * {@code null}. * * @return {@code null} */ public T get() { return null; } /* Override the implementation of Reference.refersTo. * Phantom references are weaker than finalization, so the referent * access needs to be handled differently for garbage collectors that * do reference processing concurrently. */ @Override boolean refersToImpl(T obj) { return refersTo0(obj); } @IntrinsicCandidate private native boolean refersTo0(Object o); /** * Creates a new phantom reference that refers to the given object and * is registered with the given queue. * * <p> It is possible to create a phantom reference with a {@code null} * queue. Such a reference will never be enqueued. * * @param referent the object the new phantom reference will refer to * @param q the queue with which the reference is to be registered, * or {@code null} if registration is not required */ public PhantomReference(T referent, ReferenceQueue<? super T> q) { super(referent, q); } }
⏎ java/lang/ref/PhantomReference.java
Or download all of them as a single archive file:
File name: java.base-17.0.5-src.zip File size: 8883851 bytes Release date: 2022-09-13 Download
2023-09-26, 44289👍, 1💬
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