57 lines
2.0 KiB
C++
57 lines
2.0 KiB
C++
/*
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* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2017, Red Hat, Inc. and/or its affiliates.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "gc/shared/gcArguments.hpp"
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#include "runtime/arguments.hpp"
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#include "runtime/globals.hpp"
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#include "runtime/globals_extension.hpp"
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#include "utilities/macros.hpp"
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void GCArguments::initialize() {
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if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) {
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MarkSweepAlwaysCompactCount = 1; // Move objects every gc.
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}
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if (!(UseParallelGC || UseParallelOldGC) && FLAG_IS_DEFAULT(ScavengeBeforeFullGC)) {
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FLAG_SET_DEFAULT(ScavengeBeforeFullGC, false);
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}
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if (GCTimeLimit == 100) {
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// Turn off gc-overhead-limit-exceeded checks
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FLAG_SET_DEFAULT(UseGCOverheadLimit, false);
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}
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if (MinHeapFreeRatio == 100) {
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// Keeping the heap 100% free is hard ;-) so limit it to 99%.
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FLAG_SET_ERGO(uintx, MinHeapFreeRatio, 99);
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}
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if (!ClassUnloading) {
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// If class unloading is disabled, also disable concurrent class unloading.
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FLAG_SET_CMDLINE(bool, ClassUnloadingWithConcurrentMark, false);
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}
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}
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