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8300236: Use VarHandle access in Data(Input | Output)Stream classes

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Reviewed-by: rriggs, alanb
This commit is contained in:
Per Minborg 2023-01-25 12:54:27 +00:00
parent a5d8e12872
commit 74e1a8bfa8
11 changed files with 869 additions and 364 deletions
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21
src/java.base/share/classes/java/io/RandomAccessFile.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1994, 2022, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1994, 2023, 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
@ -30,6 +30,7 @@ import java.nio.channels.FileChannel;
import jdk.internal.access.JavaIORandomAccessFileAccess;
import jdk.internal.access.SharedSecrets;
import jdk.internal.misc.Blocker;
import jdk.internal.util.ByteArray;
import sun.nio.ch.FileChannelImpl;
@ -884,7 +885,7 @@ public class RandomAccessFile implements DataOutput, DataInput, Closeable {
*/
public final int readInt() throws IOException {
readFully(buffer, 0, Integer.BYTES);
return Bits.getInt(buffer, 0);
return ByteArray.getInt(buffer, 0);
}
/**
@ -917,7 +918,7 @@ public class RandomAccessFile implements DataOutput, DataInput, Closeable {
*/
public final long readLong() throws IOException {
readFully(buffer, 0, Long.BYTES);
return Bits.getLong(buffer, 0);
return ByteArray.getLong(buffer, 0);
}
/**
@ -941,7 +942,7 @@ public class RandomAccessFile implements DataOutput, DataInput, Closeable {
*/
public final float readFloat() throws IOException {
readFully(buffer, 0, Float.BYTES);
return Bits.getFloat(buffer, 0);
return ByteArray.getFloat(buffer, 0);
}
/**
@ -965,7 +966,7 @@ public class RandomAccessFile implements DataOutput, DataInput, Closeable {
*/
public final double readDouble() throws IOException {
readFully(buffer, 0, Double.BYTES);
return Bits.getDouble(buffer, 0);
return ByteArray.getDouble(buffer, 0);
}
/**
@ -1104,7 +1105,7 @@ public class RandomAccessFile implements DataOutput, DataInput, Closeable {
* @throws IOException if an I/O error occurs.
*/
public final void writeInt(int v) throws IOException {
Bits.putInt(buffer, 0, v);
ByteArray.setInt(buffer, 0, v);
write(buffer, 0, Integer.BYTES);
//written += 4;
}
@ -1117,7 +1118,7 @@ public class RandomAccessFile implements DataOutput, DataInput, Closeable {
* @throws IOException if an I/O error occurs.
*/
public final void writeLong(long v) throws IOException {
Bits.putLong(buffer, 0, v);
ByteArray.setLong(buffer, 0, v);
write(buffer, 0, Long.BYTES);
}
@ -1133,7 +1134,8 @@ public class RandomAccessFile implements DataOutput, DataInput, Closeable {
* @see java.lang.Float#floatToIntBits(float)
*/
public final void writeFloat(float v) throws IOException {
writeInt(Float.floatToIntBits(v));
ByteArray.setFloat(buffer, 0, v);
write(buffer, 0, Float.BYTES);
}
/**
@ -1148,7 +1150,8 @@ public class RandomAccessFile implements DataOutput, DataInput, Closeable {
* @see java.lang.Double#doubleToLongBits(double)
*/
public final void writeDouble(double v) throws IOException {
writeLong(Double.doubleToLongBits(v));
ByteArray.setDouble(buffer, 0, v);
write(buffer, 0, Double.BYTES);
}
/**