hotspot/src/share/vm/memory/genRemSet.cpp
author brutisso
Mon, 21 Nov 2011 07:47:34 +0100
changeset 11170 7663e46f3a54
parent 7397 5b173b4ca846
child 13728 882756847a04
permissions -rw-r--r--
7110718: -XX:MarkSweepAlwaysCompactCount=0 crashes the JVM Summary: Interpret MarkSweepAlwaysCompactCount < 1 as never do full compaction Reviewed-by: ysr, tonyp, jmasa, johnc

/*
 * Copyright (c) 2001, 2010, 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
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
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#include "precompiled.hpp"
#include "memory/cardTableRS.hpp"
#include "memory/genRemSet.hpp"

// This kind of "BarrierSet" allows a "CollectedHeap" to detect and
// enumerate ref fields that have been modified (since the last
// enumeration.)

uintx GenRemSet::max_alignment_constraint(Name nm) {
  switch (nm) {
  case GenRemSet::CardTable:
    return CardTableRS::ct_max_alignment_constraint();
  default:
    guarantee(false, "Unrecognized GenRemSet type.");
    return (0); // Make Windows compiler happy
  }
}