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JDK 11 java.base.jmod - Base Module
JDK 11 java.base.jmod is the JMOD file for JDK 11 Base module.
JDK 11 Base module compiled class files are stored in \fyicenter\jdk-11.0.1\jmods\java.base.jmod.
JDK 11 Base module compiled class files are also linked and stored in the \fyicenter\jdk-11.0.1\lib\modules JImage file.
JDK 11 Base module source code files are stored in \fyicenter\jdk-11.0.1\lib\src.zip\java.base.
You can click and view the content of each source code file in the list below.
✍: FYIcenter
⏎ jdk/internal/ref/WeakCleanable.java
/* * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. * * * * * * * * * * * * * * * * * * * * */ package jdk.internal.ref; import java.lang.ref.Cleaner; import java.lang.ref.Reference; import java.lang.ref.WeakReference; import java.util.Objects; /** * WeakCleanable subclasses efficiently encapsulate cleanup state and * the cleaning action. * Subclasses implement the abstract {@link #performCleanup()} method * to provide the cleaning action. * When constructed, the object reference and the {@link Cleaner.Cleanable Cleanable} * are registered with the {@link Cleaner}. * The Cleaner invokes {@link Cleaner.Cleanable#clean() clean} after the * referent becomes weakly reachable. */ public abstract class WeakCleanable<T> extends WeakReference<T> implements Cleaner.Cleanable { /** * Links to previous and next in a doubly-linked list. */ WeakCleanable<?> prev = this, next = this; /** * The list of WeakCleanable; synchronizes insert and remove. */ private final WeakCleanable<?> list; /** * Constructs new {@code WeakCleanableReference} with * {@code non-null referent} and {@code non-null cleaner}. * The {@code cleaner} is not retained by this reference; it is only used * to register the newly constructed {@link Cleaner.Cleanable Cleanable}. * * @param referent the referent to track * @param cleaner the {@code Cleaner} to register new reference with */ public WeakCleanable(T referent, Cleaner cleaner) { super(Objects.requireNonNull(referent), CleanerImpl.getCleanerImpl(cleaner).queue); list = CleanerImpl.getCleanerImpl(cleaner).weakCleanableList; insert(); // Ensure referent and cleaner remain accessible Reference.reachabilityFence(referent); Reference.reachabilityFence(cleaner); } /** * Construct a new root of the list; not inserted. */ WeakCleanable() { super(null, null); this.list = this; } /** * Insert this WeakCleanableReference after the list head. */ private void insert() { synchronized (list) { prev = list; next = list.next; next.prev = this; list.next = this; } } /** * Remove this WeakCleanableReference from the list. * * @return true if Cleanable was removed or false if not because * it had already been removed before */ private boolean remove() { synchronized (list) { if (next != this) { next.prev = prev; prev.next = next; prev = this; next = this; return true; } return false; } } /** * Returns true if the list's next reference refers to itself. * * @return true if the list is empty */ boolean isListEmpty() { synchronized (list) { return list == list.next; } } /** * Unregister this WeakCleanable reference and invoke {@link #performCleanup()}, * ensuring at-most-once semantics. */ @Override public final void clean() { if (remove()) { super.clear(); performCleanup(); } } /** * Unregister this WeakCleanable and clear the reference. * Due to inherent concurrency, {@link #performCleanup()} may still be invoked. */ @Override public void clear() { if (remove()) { super.clear(); } } /** * The {@code performCleanup} abstract method is overridden * to implement the cleaning logic. * The {@code performCleanup} method should not be called except * by the {@link #clean} method which ensures at most once semantics. */ protected abstract void performCleanup(); /** * This method always throws {@link UnsupportedOperationException}. * Enqueuing details of {@link Cleaner.Cleanable} * are a private implementation detail. * * @throws UnsupportedOperationException always */ @Override public final boolean isEnqueued() { throw new UnsupportedOperationException("isEnqueued"); } /** * This method always throws {@link UnsupportedOperationException}. * Enqueuing details of {@link Cleaner.Cleanable} * are a private implementation detail. * * @throws UnsupportedOperationException always */ @Override public final boolean enqueue() { throw new UnsupportedOperationException("enqueue"); } }
⏎ jdk/internal/ref/WeakCleanable.java
Or download all of them as a single archive file:
File name: java.base-11.0.1-src.zip File size: 8740354 bytes Release date: 2018-11-04 Download
2020-05-29, 206299👍, 0💬
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