com.oracle.svm.core.jdk

Class LocalizationFeature.CharsetNodePlugin

java.lang.Object

com.oracle.svm.core.jdk.LocalizationFeature.CharsetNodePlugin

All Implemented Interfaces:

org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderPlugin, org.graalvm.compiler.nodes.graphbuilderconf.NodePlugin

Enclosing class:

LocalizationFeature

public static final class LocalizationFeature.CharsetNodePlugin
extends Object
implements org.graalvm.compiler.nodes.graphbuilderconf.NodePlugin

Many subclasses of Charset initialize encoding and decoding tables lazily. They all follow the same pattern: the methods "initc2b" and/or "initb2c" perform the initialization, and then set a field "c2bInitialized" or "b2cInitialized" to true. We run the initialization eagerly by creating an encoder and decoder during image generation in LocalizationFeature.addCharset(java.nio.charset.Charset). So we know that the "init*" methods do nothing, and we replace calls to them with nothing, i.e,, remove calls to them. We could do all this with individual method substitutions, but it would require a lot of substitution methods that all look the same.

Constructor Summary

Constructors

Constructor and Description
CharsetNodePlugin()

Method Summary

Modifier and Type	Method and Description
boolean	handleInvoke(org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderContext b, jdk.vm.ci.meta.ResolvedJavaMethod method, org.graalvm.compiler.nodes.ValueNode[] args)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.graalvm.compiler.nodes.graphbuilderconf.NodePlugin

canChangeStackKind, handleCheckCast, handleInstanceOf, handleLoadField, handleLoadIndexed, handleLoadStaticField, handleNewArray, handleNewInstance, handleNewMultiArray, handleStoreField, handleStoreIndexed, handleStoreStaticField, instrumentExceptionDispatch

Constructor Detail

CharsetNodePlugin

public CharsetNodePlugin()

Method Detail

handleInvoke

public boolean handleInvoke(org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderContext b,
                            jdk.vm.ci.meta.ResolvedJavaMethod method,
                            org.graalvm.compiler.nodes.ValueNode[] args)

Specified by:

handleInvoke in interface org.graalvm.compiler.nodes.graphbuilderconf.NodePlugin