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8033792: AltHashing used jint for imprecise bit shifting Summary: 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 Contributed-by: yumin.qi@oracle.com
author minqi
date Mon, 10 Feb 2014 21:29:14 -0800
parents ad72068ac41e
children 7f0e0366ec81
comparison
equal deleted inserted replaced
17707:7d28f4e15b61 17709:f9e35a9dc8c7
1 /* 1 /*
2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
360 // safepoint if called on a biased object. Calling code must be aware of that. 360 // safepoint if called on a biased object. Calling code must be aware of that.
361 intptr_t identity_hash(); 361 intptr_t identity_hash();
362 intptr_t slow_identity_hash(); 362 intptr_t slow_identity_hash();
363 363
364 // Alternate hashing code if string table is rehashed 364 // Alternate hashing code if string table is rehashed
365 unsigned int new_hash(jint seed); 365 unsigned int new_hash(juint seed);
366 366
367 // marks are forwarded to stack when object is locked 367 // marks are forwarded to stack when object is locked
368 bool has_displaced_mark() const; 368 bool has_displaced_mark() const;
369 markOop displaced_mark() const; 369 markOop displaced_mark() const;
370 void set_displaced_mark(markOop m); 370 void set_displaced_mark(markOop m);