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8284161: Implementation of Virtual Threads (Preview)

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Co-authored-by: Ron Pressler <rpressler@openjdk.org>
Co-authored-by: Alan Bateman <alanb@openjdk.org>
Co-authored-by: Erik Österlund <eosterlund@openjdk.org>
Co-authored-by: Andrew Haley <aph@openjdk.org>
Co-authored-by: Rickard Bäckman <rbackman@openjdk.org>
Co-authored-by: Markus Grönlund <mgronlun@openjdk.org>
Co-authored-by: Leonid Mesnik <lmesnik@openjdk.org>
Co-authored-by: Serguei Spitsyn <sspitsyn@openjdk.org>
Co-authored-by: Chris Plummer <cjplummer@openjdk.org>
Co-authored-by: Coleen Phillimore <coleenp@openjdk.org>
Co-authored-by: Robbin Ehn <rehn@openjdk.org>
Co-authored-by: Stefan Karlsson <stefank@openjdk.org>
Co-authored-by: Thomas Schatzl <tschatzl@openjdk.org>
Co-authored-by: Sergey Kuksenko <skuksenko@openjdk.org>
Reviewed-by: lancea, eosterlund, rehn, sspitsyn, stefank, tschatzl, dfuchs, lmesnik, dcubed, kevinw, amenkov, dlong, mchung, psandoz, bpb, coleenp, smarks, egahlin, mseledtsov, coffeys, darcy
This commit is contained in:
Alan Bateman 2022-05-07 08:06:16 +00:00
parent 5212535a27
commit 9583e3657e
1133 changed files with 95935 additions and 8335 deletions
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26
src/java.base/share/classes/java/lang/Object.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1994, 2021, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1994, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -25,6 +25,7 @@
package java.lang;
import jdk.internal.misc.Blocker;
import jdk.internal.vm.annotation.IntrinsicCandidate;
/**
@ -79,11 +80,11 @@ public class Object {
* This integer need not remain consistent from one execution of an
* application to another execution of the same application.
* <li>If two objects are equal according to the {@link
* equals(Object) equals} method, then calling the {@code
* #equals(Object) equals} method, then calling the {@code
* hashCode} method on each of the two objects must produce the
* same integer result.
* <li>It is <em>not</em> required that if two objects are unequal
* according to the {@link equals(Object) equals} method, then
* according to the {@link #equals(Object) equals} method, then
* calling the {@code hashCode} method on each of the two objects
* must produce distinct integer results. However, the programmer
* should be aware that producing distinct integer results for
@ -148,7 +149,7 @@ public class Object {
* relation, each equivalence class only has a single element.
*
* @apiNote
* It is generally necessary to override the {@link hashCode hashCode}
* It is generally necessary to override the {@link #hashCode() hashCode}
* method whenever this method is overridden, so as to maintain the
* general contract for the {@code hashCode} method, which states
* that equal objects must have equal hash codes.
@ -359,7 +360,22 @@ public class Object {
* @see #wait()
* @see #wait(long, int)
*/
public final native void wait(long timeoutMillis) throws InterruptedException;
public final void wait(long timeoutMillis) throws InterruptedException {
long comp = Blocker.begin();
try {
wait0(timeoutMillis);
} catch (InterruptedException e) {
Thread thread = Thread.currentThread();
if (thread.isVirtual())
thread.getAndClearInterrupt();
throw e;
} finally {
Blocker.end(comp);
}
}
// final modifier so method not in vtable
private final native void wait0(long timeoutMillis) throws InterruptedException;
/**
* Causes the current thread to wait until it is awakened, typically