com.oracle.svm.core.util

Class HostedStringDeduplication

java.lang.Object

com.oracle.svm.core.util.HostedStringDeduplication

public class HostedStringDeduplication
extends Object

Performs de-duplication of String without using String.intern(). Calling String.intern() has negative side effects on the image size because all interned strings must be maintained in an array in the image heap, see StringInternSupport.

Method Summary

Modifier and Type	Method and Description
String	deduplicate(String s, boolean unintern) De-duplicates the provided string.
static boolean	isInternedString(String str) Returns true if the provided String is interned.
static HostedStringDeduplication	singleton()

Methods inherited from class java.lang.Object

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

Method Detail

singleton

public static HostedStringDeduplication singleton()

deduplicate

public String deduplicate(String s,
                          boolean unintern)

De-duplicates the provided string. The handling of interned strings depends on the "unintern" parameter: if it is false, then no de-duplication is performed and the interned string is returned; if it is true, then de-duplication is performed on a non-interned copy of the string, i.e., the result is always a non-interned string.

isInternedString

public static boolean isInternedString(String str)

Returns true if the provided String is interned.