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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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13
src/java.base/share/classes/java/util/concurrent/ThreadPoolExecutor.java
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@ -40,10 +40,12 @@ import java.util.ConcurrentModificationException;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Objects;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.locks.AbstractQueuedSynchronizer;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.ReentrantLock;
import jdk.internal.vm.SharedThreadContainer;
/**
* An {@link ExecutorService} that executes each submitted task using
@ -477,6 +479,11 @@ public class ThreadPoolExecutor extends AbstractExecutorService {
*/
private final Condition termination = mainLock.newCondition();
/**
* The thread container for the worker threads.
*/
private final SharedThreadContainer container;
/**
* Tracks largest attained pool size. Accessed only under
* mainLock.
@ -726,6 +733,7 @@ public class ThreadPoolExecutor extends AbstractExecutorService {
} finally {
ctl.set(ctlOf(TERMINATED, 0));
termination.signalAll();
container.close();
}
return;
}
@ -942,7 +950,7 @@ public class ThreadPoolExecutor extends AbstractExecutorService {
mainLock.unlock();
}
if (workerAdded) {
t.start();
container.start(t);
workerStarted = true;
}
}
@ -1309,6 +1317,9 @@ public class ThreadPoolExecutor extends AbstractExecutorService {
this.keepAliveTime = unit.toNanos(keepAliveTime);
this.threadFactory = threadFactory;
this.handler = handler;
String name = Objects.toIdentityString(this);
this.container = SharedThreadContainer.create(name);
}
/**