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8326941: Remove StringUTF16::isBigEndian

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Reviewed-by: rriggs
This commit is contained in:
Per Minborg 2024-03-19 08:46:51 +00:00
parent 6eea5d6755
commit c59c41aa6e
2 changed files with 5 additions and 16 deletions
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8
src/java.base/share/classes/java/lang/StringUTF16.java
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2015, 2023, 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. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* *
* This code is free software; you can redistribute it and/or modify it * This code is free software; you can redistribute it and/or modify it
@ -32,6 +32,8 @@ import java.util.function.Consumer;
import java.util.function.IntConsumer; import java.util.function.IntConsumer;
import java.util.stream.Stream; import java.util.stream.Stream;
import java.util.stream.StreamSupport; import java.util.stream.StreamSupport;
import jdk.internal.misc.Unsafe;
import jdk.internal.util.ArraysSupport; import jdk.internal.util.ArraysSupport;
import jdk.internal.util.DecimalDigits; import jdk.internal.util.DecimalDigits;
import jdk.internal.vm.annotation.ForceInline; import jdk.internal.vm.annotation.ForceInline;
@ -1658,12 +1660,10 @@ final class StringUTF16 {
//////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////
private static native boolean isBigEndian();
private static final int HI_BYTE_SHIFT; private static final int HI_BYTE_SHIFT;
private static final int LO_BYTE_SHIFT; private static final int LO_BYTE_SHIFT;
static { static {
if (isBigEndian()) { if (Unsafe.getUnsafe().isBigEndian()) {
HI_BYTE_SHIFT = 8; HI_BYTE_SHIFT = 8;
LO_BYTE_SHIFT = 0; LO_BYTE_SHIFT = 0;
} else { } else {

13
src/java.base/share/native/libjava/String.c
View file

@ -1,5 +1,5 @@
/* /*
* Copyright (c) 1997, 1998, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 1997, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* *
* This code is free software; you can redistribute it and/or modify it * This code is free software; you can redistribute it and/or modify it
@ -31,14 +31,3 @@ Java_java_lang_String_intern(JNIEnv *env, jobject this)
{ {
return JVM_InternString(env, this); return JVM_InternString(env, this);
} }
JNIEXPORT jboolean JNICALL
Java_java_lang_StringUTF16_isBigEndian(JNIEnv *env, jclass cls)
{
unsigned int endianTest = 0xff000000;
if (((char*)(&endianTest))[0] != 0) {
return JNI_TRUE;
} else {
return JNI_FALSE;
}
}