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8033792: AltHashing used jint for imprecise bit shifting

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AltHashing used jint the way of juint in bit shifting which could lead loss of precision. Fix  by change _seed defined as juint.

Reviewed-by: coleenp, ccheung
This commit is contained in:
Yumin Qi 2014-02-10 21:29:14 -08:00 • committed by Yumin Qi
parent 35ff06e689
commit a90e842e0c
10 changed files with 66 additions and 65 deletions
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4
hotspot/src/share/vm/utilities/hashtable.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2003, 2014, 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
@ -93,7 +93,7 @@ template <MEMFLAGS F> bool BasicHashtable<F>::check_rehash_table(int count) {
return false;
}
template <class T, MEMFLAGS F> jint Hashtable<T, F>::_seed = 0;
template <class T, MEMFLAGS F> juint Hashtable<T, F>::_seed = 0;
// Create a new table and using alternate hash code, populate the new table
// with the existing elements. This can be used to change the hash code