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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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29
src/java.base/share/classes/java/io/InputStreamReader.java
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 1996, 2021, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1996, 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
@ -28,9 +28,9 @@ package java.io;
import java.nio.CharBuffer;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import jdk.internal.misc.InternalLock;
import sun.nio.cs.StreamDecoder;
/**
* An InputStreamReader is a bridge from byte streams to character streams: It
* reads bytes and decodes them into characters using a specified {@link
@ -61,9 +61,22 @@ import sun.nio.cs.StreamDecoder;
*/
public class InputStreamReader extends Reader {
private final StreamDecoder sd;
/**
* Return the lock object for the given reader's stream decoder.
* If the reader type is trusted then an internal lock can be used. If the
* reader type is not trusted then the reader object is the lock.
*/
private static Object lockFor(InputStreamReader reader) {
Class<?> clazz = reader.getClass();
if (clazz == InputStreamReader.class || clazz == FileReader.class) {
return InternalLock.newLockOr(reader);
} else {
return reader;
}
}
/**
* Creates an InputStreamReader that uses the
* {@link Charset#defaultCharset() default charset}.
@ -74,8 +87,8 @@ public class InputStreamReader extends Reader {
*/
public InputStreamReader(InputStream in) {
super(in);
sd = StreamDecoder.forInputStreamReader(in, this,
Charset.defaultCharset()); // ## check lock object
Charset cs = Charset.defaultCharset();
sd = StreamDecoder.forInputStreamReader(in, lockFor(this), cs);
}
/**
@ -96,7 +109,7 @@ public class InputStreamReader extends Reader {
super(in);
if (charsetName == null)
throw new NullPointerException("charsetName");
sd = StreamDecoder.forInputStreamReader(in, this, charsetName);
sd = StreamDecoder.forInputStreamReader(in, lockFor(this), charsetName);
}
/**
@ -111,7 +124,7 @@ public class InputStreamReader extends Reader {
super(in);
if (cs == null)
throw new NullPointerException("charset");
sd = StreamDecoder.forInputStreamReader(in, this, cs);
sd = StreamDecoder.forInputStreamReader(in, lockFor(this), cs);
}
/**
@ -126,7 +139,7 @@ public class InputStreamReader extends Reader {
super(in);
if (dec == null)
throw new NullPointerException("charset decoder");
sd = StreamDecoder.forInputStreamReader(in, this, dec);
sd = StreamDecoder.forInputStreamReader(in, lockFor(this), dec);
}
/**