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Reduce memory footprint of AsciiBytes.hashCode 

Update `AsciiBytes.hashCode(int hash, String string)` so that it no
longer copies the backing array of the string.

Closes gh-7851
This commit is contained in:
dreis 2017-01-03 22:37:06 +01:00 committed by Phillip Webb
parent 8ccd4db513
commit cee576b8b2
1 changed files with 3 additions and 4 deletions
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7
spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/jar/AsciiBytes.java
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@ -1,5 +1,5 @@
/* /*
* Copyright 2012-2016 the original author or authors. * Copyright 2012-2017 the original author or authors.
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -224,9 +224,8 @@ final class AsciiBytes {
} }
public static int hashCode(int hash, String string) { public static int hashCode(int hash, String string) {
char[] chars = string.toCharArray(); for (int i = 0; i < string.length(); i++) {
for (int i = 0; i < chars.length; i++) { hash = 31 * hash + string.charAt(i);
hash = 31 * hash + chars[i];
} }
return hash; return hash;
} }