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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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37
src/java.base/share/classes/java/io/PushbackInputStream.java
View file

@ -26,6 +26,7 @@
package java.io;
import java.util.Objects;
import jdk.internal.misc.InternalLock;
/**
* A {@code PushbackInputStream} adds
@ -52,6 +53,8 @@ import java.util.Objects;
* @since 1.0
*/
public class PushbackInputStream extends FilterInputStream {
private final InternalLock closeLock;
/**
* The pushback buffer.
* @since 1.1
@ -95,6 +98,13 @@ public class PushbackInputStream extends FilterInputStream {
}
this.buf = new byte[size];
this.pos = size;
// use monitors when PushbackInputStream is sub-classed
if (getClass() == PushbackInputStream.class) {
closeLock = InternalLock.newLockOrNull();
} else {
closeLock = null;
}
}
/**
@ -373,11 +383,26 @@ public class PushbackInputStream extends FilterInputStream {
*
* @throws IOException if an I/O error occurs.
*/
public synchronized void close() throws IOException {
if (in == null)
return;
in.close();
in = null;
buf = null;
public void close() throws IOException {
if (closeLock != null) {
closeLock.lock();
try {
implClose();
} finally {
closeLock.unlock();
}
} else {
synchronized (this) {
implClose();
}
}
}
private void implClose() throws IOException {
if (in != null) {
in.close();
in = null;
buf = null;
}
}
}