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8329593: Drop adjustments to target parallelism when virtual threads do I/O on files opened for buffered I/O

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Reviewed-by: bpb, jpai
This commit is contained in:
Alan Bateman 2024-04-23 16:10:13 +00:00
parent b07e1531b3
commit 412e306d81
28 changed files with 461 additions and 870 deletions
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35
src/java.base/share/classes/java/io/FileOutputStream.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1994, 2023, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1994, 2024, 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
@ -28,7 +28,6 @@ package java.io;
import java.nio.channels.FileChannel;
import jdk.internal.access.SharedSecrets;
import jdk.internal.access.JavaIOFileDescriptorAccess;
import jdk.internal.misc.Blocker;
import sun.nio.ch.FileChannelImpl;
@ -286,12 +285,7 @@ public class FileOutputStream extends OutputStream
* @param append whether the file is to be opened in append mode
*/
private void open(String name, boolean append) throws FileNotFoundException {
long comp = Blocker.begin();
try {
open0(name, append);
} finally {
Blocker.end(comp);
}
open0(name, append);
}
/**
@ -313,12 +307,7 @@ public class FileOutputStream extends OutputStream
@Override
public void write(int b) throws IOException {
boolean append = FD_ACCESS.getAppend(fd);
long comp = Blocker.begin();
try {
write(b, append);
} finally {
Blocker.end(comp);
}
write(b, append);
}
/**
@ -343,12 +332,7 @@ public class FileOutputStream extends OutputStream
@Override
public void write(byte[] b) throws IOException {
boolean append = FD_ACCESS.getAppend(fd);
long comp = Blocker.begin();
try {
writeBytes(b, 0, b.length, append);
} finally {
Blocker.end(comp);
}
writeBytes(b, 0, b.length, append);
}
/**
@ -364,12 +348,7 @@ public class FileOutputStream extends OutputStream
@Override
public void write(byte[] b, int off, int len) throws IOException {
boolean append = FD_ACCESS.getAppend(fd);
long comp = Blocker.begin();
try {
writeBytes(b, off, len, append);
} finally {
Blocker.end(comp);
}
writeBytes(b, off, len, append);
}
/**
@ -460,8 +439,8 @@ public class FileOutputStream extends OutputStream
synchronized (this) {
fc = this.channel;
if (fc == null) {
this.channel = fc = FileChannelImpl.open(fd, path, false,
true, false, this);
fc = FileChannelImpl.open(fd, path, false, true, false, false, this);
this.channel = fc;
if (closed) {
try {
// possible race with close(), benign since