src/share/vm/memory/genRemSet.cpp

Fri, 15 Apr 2011 09:36:28 -0400

author
coleenp
date
Fri, 15 Apr 2011 09:36:28 -0400
changeset 2777
8ce625481709
parent 2314
f95d63e2154a
child 4037
da91efe96a93
permissions
-rw-r--r--

7032407: Crash in LinkResolver::runtime_resolve_virtual_method()
Summary: Make CDS reorder vtables so that dump time vtables match run time order, so when redefine classes reinitializes them, they aren't in the wrong order.
Reviewed-by: dcubed, acorn

     1 /*
     2  * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     4  *
     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
     7  * published by the Free Software Foundation.
     8  *
     9  * This code is distributed in the hope that it will be useful, but WITHOUT
    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    12  * version 2 for more details (a copy is included in the LICENSE file that
    13  * accompanied this code).
    14  *
    15  * You should have received a copy of the GNU General Public License version
    16  * 2 along with this work; if not, write to the Free Software Foundation,
    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    18  *
    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    20  * or visit www.oracle.com if you need additional information or have any
    21  * questions.
    22  *
    23  */
    25 #include "precompiled.hpp"
    26 #include "memory/cardTableRS.hpp"
    27 #include "memory/genRemSet.hpp"
    29 // This kind of "BarrierSet" allows a "CollectedHeap" to detect and
    30 // enumerate ref fields that have been modified (since the last
    31 // enumeration.)
    33 uintx GenRemSet::max_alignment_constraint(Name nm) {
    34   switch (nm) {
    35   case GenRemSet::CardTable:
    36     return CardTableRS::ct_max_alignment_constraint();
    37   default:
    38     guarantee(false, "Unrecognized GenRemSet type.");
    39     return (0); // Make Windows compiler happy
    40   }
    41 }

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