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8323794: Remove unused jimage compressor plugin configuration

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Reviewed-by: jlaskey, mchung
This commit is contained in:
Claes Redestad 2024-01-17 15:41:13 +00:00
parent 7be9f1d054
commit 8b29e127c2
13 changed files with 47 additions and 84 deletions
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46
src/java.base/share/classes/jdk/internal/jimage/decompressor/CompressedResourceHeader.java
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2015, 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
@ -27,7 +27,6 @@ package jdk.internal.jimage.decompressor;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.Objects;
import jdk.internal.jimage.decompressor.ResourceDecompressor.StringsProvider;
/**
*
@ -45,19 +44,25 @@ public final class CompressedResourceHeader {
private static final int SIZE = 29;
public static final int MAGIC = 0xCAFEFAFA;
// Standard header offsets
private static final int MAGIC_OFFSET = 0; // 4 bytes
private static final int COMPRESSED_OFFSET = 4; // 8 bytes
private static final int UNCOMPRESSED_OFFSET = 12; // 8 bytes
private static final int DECOMPRESSOR_NAME_OFFSET = 20; // 4 bytes, followed by 4 byte gap
private static final int IS_TERMINAL_OFFSET = 28; // 1 byte
private final long uncompressedSize;
private final long compressedSize;
private final int decompressorNameOffset;
private final int contentOffset;
private final boolean isTerminal;
public CompressedResourceHeader(long compressedSize,
long uncompressedSize, int decompressorNameOffset, int contentOffset,
long uncompressedSize, int decompressorNameOffset,
boolean isTerminal) {
this.compressedSize = compressedSize;
this.uncompressedSize = uncompressedSize;
this.decompressorNameOffset = decompressorNameOffset;
this.contentOffset = contentOffset;
this.isTerminal = isTerminal;
}
@ -69,18 +74,6 @@ public final class CompressedResourceHeader {
return decompressorNameOffset;
}
public int getContentOffset() {
return contentOffset;
}
public String getStoredContent(StringsProvider provider) {
Objects.requireNonNull(provider);
if(contentOffset == -1) {
return null;
}
return provider.getString(contentOffset);
}
public long getUncompressedSize() {
return uncompressedSize;
}
@ -97,7 +90,8 @@ public final class CompressedResourceHeader {
buffer.putLong(compressedSize);
buffer.putLong(uncompressedSize);
buffer.putInt(decompressorNameOffset);
buffer.putInt(contentOffset);
// Compatibility
buffer.putInt(-1);
buffer.put(isTerminal ? (byte)1 : (byte)0);
return buffer.array();
}
@ -115,16 +109,16 @@ public final class CompressedResourceHeader {
}
ByteBuffer buffer = ByteBuffer.wrap(resource, 0, SIZE);
buffer.order(order);
int magic = buffer.getInt();
if(magic != MAGIC) {
int magic = buffer.getInt(MAGIC_OFFSET);
if (magic != MAGIC) {
return null;
}
long size = buffer.getLong();
long uncompressedSize = buffer.getLong();
int decompressorNameOffset = buffer.getInt();
int contentIndex = buffer.getInt();
byte isTerminal = buffer.get();
long size = buffer.getLong(COMPRESSED_OFFSET);
long uncompressedSize = buffer.getLong(UNCOMPRESSED_OFFSET);
int decompressorNameOffset = buffer.getInt(DECOMPRESSOR_NAME_OFFSET);
// skip unused 'contentOffset' int
byte isTerminal = buffer.get(IS_TERMINAL_OFFSET);
return new CompressedResourceHeader(size, uncompressedSize,
decompressorNameOffset, contentIndex, isTerminal == 1);
decompressorNameOffset, isTerminal == 1);
}
}

16
src/java.base/share/classes/jdk/internal/jimage/decompressor/Decompressor.java
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2015, 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
@ -24,14 +24,11 @@
*/
package jdk.internal.jimage.decompressor;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.nio.ByteOrder;
import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import java.util.Properties;
import jdk.internal.jimage.decompressor.ResourceDecompressor.StringsProvider;
/**
@ -75,17 +72,8 @@ public final class Decompressor {
if (pluginName == null) {
throw new IOException("Plugin name not found");
}
String storedContent = header.getStoredContent(provider);
Properties props = new Properties();
if (storedContent != null) {
try (ByteArrayInputStream stream
= new ByteArrayInputStream(storedContent.
getBytes(StandardCharsets.UTF_8));) {
props.loadFromXML(stream);
}
}
decompressor = ResourceDecompressorRepository.
newResourceDecompressor(props, pluginName);
newResourceDecompressor(pluginName);
if (decompressor == null) {
throw new IOException("Plugin not found: " + pluginName);
}

7
src/java.base/share/classes/jdk/internal/jimage/decompressor/ResourceDecompressorFactory.java
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2015, 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
@ -25,7 +25,6 @@
package jdk.internal.jimage.decompressor;
import java.io.IOException;
import java.util.Properties;
/**
*
@ -54,12 +53,10 @@ public abstract class ResourceDecompressorFactory {
/**
* To build a new decompressor.
* @param properties Contains configuration.
* @return A new decompressor.
* @throws IOException
*/
public abstract ResourceDecompressor newDecompressor(Properties properties)
throws IOException;
public abstract ResourceDecompressor newDecompressor() throws IOException;
}

9
src/java.base/share/classes/jdk/internal/jimage/decompressor/ResourceDecompressorRepository.java
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2015, 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
@ -27,7 +27,6 @@ package jdk.internal.jimage.decompressor;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
/**
*
@ -54,17 +53,15 @@ public final class ResourceDecompressorRepository {
/**
* Build a new decompressor for the passed name.
* @param properties Contains plugin configuration.
* @param name The plugin name to build.
* @return A decompressor or null if not found
* @throws IOException
*/
public static ResourceDecompressor newResourceDecompressor(Properties properties,
String name) throws IOException {
public static ResourceDecompressor newResourceDecompressor(String name) throws IOException {
ResourceDecompressorFactory fact = factories.get(name);
if (fact != null) {
return fact.newDecompressor(properties);
return fact.newDecompressor();
}
return null;
}

7
src/java.base/share/classes/jdk/internal/jimage/decompressor/StringSharingDecompressor.java
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2015, 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
@ -33,7 +33,6 @@ import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.Arrays;
import java.util.List;
import java.util.Properties;
/**
*
@ -228,9 +227,7 @@ public class StringSharingDecompressor implements ResourceDecompressor {
return StringSharingDecompressorFactory.NAME;
}
public StringSharingDecompressor(Properties properties) {
}
public StringSharingDecompressor() {}
@Override
public byte[] decompress(StringsProvider reader, byte[] content,

7
src/java.base/share/classes/jdk/internal/jimage/decompressor/StringSharingDecompressorFactory.java
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2015, 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
@ -25,7 +25,6 @@
package jdk.internal.jimage.decompressor;
import java.io.IOException;
import java.util.Properties;
/**
*
@ -45,8 +44,8 @@ public class StringSharingDecompressorFactory extends ResourceDecompressorFactor
}
@Override
public ResourceDecompressor newDecompressor(Properties properties)
public ResourceDecompressor newDecompressor()
throws IOException {
return new StringSharingDecompressor(properties);
return new StringSharingDecompressor();
}
}

1
src/java.base/share/classes/jdk/internal/jimage/decompressor/ZipDecompressor.java
View file

@ -24,7 +24,6 @@
*/
package jdk.internal.jimage.decompressor;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.zip.Inflater;

5
src/java.base/share/classes/jdk/internal/jimage/decompressor/ZipDecompressorFactory.java
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2015, 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
@ -25,7 +25,6 @@
package jdk.internal.jimage.decompressor;
import java.io.IOException;
import java.util.Properties;
/**
*
@ -44,7 +43,7 @@ public final class ZipDecompressorFactory extends ResourceDecompressorFactory {
}
@Override
public ResourceDecompressor newDecompressor(Properties properties)
public ResourceDecompressor newDecompressor()
throws IOException {
return new ZipDecompressor();
}