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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/Finalizer.java
/* * Copyright (c) 1997, 2021, Oracle and/or its affiliates. All rights reserved. * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. * * * * * * * * * * * * * * * * * * * * */ package java.lang.ref; import java.security.PrivilegedAction; import java.security.AccessController; import jdk.internal.access.JavaLangAccess; import jdk.internal.access.SharedSecrets; import jdk.internal.misc.VM; final class Finalizer extends FinalReference<Object> { /* Package-private; must be in same package as the Reference class */ private static ReferenceQueue<Object> queue = new ReferenceQueue<>(); /** Head of doubly linked list of Finalizers awaiting finalization. */ private static Finalizer unfinalized = null; /** Lock guarding access to unfinalized list. */ private static final Object lock = new Object(); private Finalizer next, prev; private Finalizer(Object finalizee) { super(finalizee, queue); // push onto unfinalized synchronized (lock) { if (unfinalized != null) { this.next = unfinalized; unfinalized.prev = this; } unfinalized = this; } } static ReferenceQueue<Object> getQueue() { return queue; } /* Invoked by VM */ static void register(Object finalizee) { new Finalizer(finalizee); } private void runFinalizer(JavaLangAccess jla) { synchronized (lock) { if (this.next == this) // already finalized return; // unlink from unfinalized if (unfinalized == this) unfinalized = this.next; else this.prev.next = this.next; if (this.next != null) this.next.prev = this.prev; this.prev = null; this.next = this; // mark as finalized } try { Object finalizee = this.get(); assert finalizee != null; if (!(finalizee instanceof java.lang.Enum)) { jla.invokeFinalize(finalizee); // Clear stack slot containing this variable, to decrease // the chances of false retention with a conservative GC finalizee = null; } } catch (Throwable x) { } super.clear(); } /* Create a privileged secondary finalizer thread in the system thread * group for the given Runnable, and wait for it to complete. * * This method is used by runFinalization. * * It could have been implemented by offloading the work to the * regular finalizer thread and waiting for that thread to finish. * The advantage of creating a fresh thread, however, is that it insulates * invokers of that method from a stalled or deadlocked finalizer thread. */ @SuppressWarnings("removal") private static void forkSecondaryFinalizer(final Runnable proc) { AccessController.doPrivileged( new PrivilegedAction<>() { public Void run() { ThreadGroup tg = Thread.currentThread().getThreadGroup(); for (ThreadGroup tgn = tg; tgn != null; tg = tgn, tgn = tg.getParent()); Thread sft = new Thread(tg, proc, "Secondary finalizer", 0, false); sft.start(); try { sft.join(); } catch (InterruptedException x) { Thread.currentThread().interrupt(); } return null; }}); } /* Called by Runtime.runFinalization() */ static void runFinalization() { if (VM.initLevel() == 0) { return; } forkSecondaryFinalizer(new Runnable() { private volatile boolean running; public void run() { // in case of recursive call to run() if (running) return; final JavaLangAccess jla = SharedSecrets.getJavaLangAccess(); running = true; for (Finalizer f; (f = (Finalizer)queue.poll()) != null; ) f.runFinalizer(jla); } }); } private static class FinalizerThread extends Thread { private volatile boolean running; FinalizerThread(ThreadGroup g) { super(g, null, "Finalizer", 0, false); } public void run() { // in case of recursive call to run() if (running) return; // Finalizer thread starts before System.initializeSystemClass // is called. Wait until JavaLangAccess is available while (VM.initLevel() == 0) { // delay until VM completes initialization try { VM.awaitInitLevel(1); } catch (InterruptedException x) { // ignore and continue } } final JavaLangAccess jla = SharedSecrets.getJavaLangAccess(); running = true; for (;;) { try { Finalizer f = (Finalizer)queue.remove(); f.runFinalizer(jla); } catch (InterruptedException x) { // ignore and continue } } } } static { ThreadGroup tg = Thread.currentThread().getThreadGroup(); for (ThreadGroup tgn = tg; tgn != null; tg = tgn, tgn = tg.getParent()); Thread finalizer = new FinalizerThread(tg); finalizer.setPriority(Thread.MAX_PRIORITY - 2); finalizer.setDaemon(true); finalizer.start(); } }
⏎ java/lang/ref/Finalizer.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, 44431👍, 1💬
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