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8332826: Make hashCode methods in ArraysSupport friendlier

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Reviewed-by: redestad, liach
This commit is contained in:
Pavel Rappo 2024-05-30 09:33:30 +00:00
parent 2b4a4b7bd8
commit 3cff588a31
13 changed files with 234 additions and 80 deletions
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4
src/java.base/share/classes/java/lang/CharacterName.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2010, 2023, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2010, 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
@ -113,7 +113,7 @@ class CharacterName {
}
private static int hashN(byte[] a, int off, int len) {
return ArraysSupport.vectorizedHashCode(a, off, len, 1, ArraysSupport.T_BYTE);
return ArraysSupport.hashCode(a, off, len, 1);
}
private int addCp(int idx, int hash, int next, int cp) {

8
src/java.base/share/classes/java/lang/StringLatin1.java
View file

@ -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.
*
* This code is free software; you can redistribute it and/or modify it
@ -303,11 +303,7 @@ final class StringLatin1 {
}
public static int hashCode(byte[] value) {
return switch (value.length) {
case 0 -> 0;
case 1 -> value[0] & 0xff;
default -> ArraysSupport.vectorizedHashCode(value, 0, value.length, 0, ArraysSupport.T_BOOLEAN);
};
return ArraysSupport.hashCodeOfUnsigned(value, 0, value.length, 0);
}
// Caller must ensure that from- and toIndex are within bounds

6
src/java.base/share/classes/java/lang/StringUTF16.java
View file

@ -585,11 +585,7 @@ final class StringUTF16 {
}
public static int hashCode(byte[] value) {
return switch (value.length) {
case 0 -> 0;
case 2 -> getChar(value, 0);
default -> ArraysSupport.vectorizedHashCode(value, 0, value.length >> 1, 0, ArraysSupport.T_CHAR);
};
return ArraysSupport.hashCodeOfUTF16(value, 0, value.length >> 1, 0);
}
// Caller must ensure that from- and toIndex are within bounds