58 lines
2.8 KiB
Java
58 lines
2.8 KiB
Java
/*
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* Copyright (c) 2013, 2020, Oracle and/or its affiliates. All rights reserved.
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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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package gc;
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/**
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* @test TestObjectAlignment
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* @bug 8021823
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* @requires vm.bits == "64"
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* @summary G1: Concurrent marking crashes with -XX:ObjectAlignmentInBytes>=32 in 64bit VMs
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* @library /test/lib
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* @modules java.base/jdk.internal.misc
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* @run main/othervm gc.TestObjectAlignment -Xmx20M -XX:+ExplicitGCInvokesConcurrent -XX:ObjectAlignmentInBytes=8
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* @run main/othervm gc.TestObjectAlignment -Xmx20M -XX:+ExplicitGCInvokesConcurrent -XX:ObjectAlignmentInBytes=16
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* @run main/othervm gc.TestObjectAlignment -Xmx20M -XX:+ExplicitGCInvokesConcurrent -XX:ObjectAlignmentInBytes=32
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* @run main/othervm gc.TestObjectAlignment -Xmx20M -XX:+ExplicitGCInvokesConcurrent -XX:ObjectAlignmentInBytes=64
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* @run main/othervm gc.TestObjectAlignment -Xmx20M -XX:+ExplicitGCInvokesConcurrent -XX:ObjectAlignmentInBytes=128
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* @run main/othervm gc.TestObjectAlignment -Xmx20M -XX:+ExplicitGCInvokesConcurrent -XX:ObjectAlignmentInBytes=256
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* @run main/othervm gc.TestObjectAlignment -Xmx20M -XX:-ExplicitGCInvokesConcurrent -XX:ObjectAlignmentInBytes=8
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* @run main/othervm gc.TestObjectAlignment -Xmx20M -XX:-ExplicitGCInvokesConcurrent -XX:ObjectAlignmentInBytes=16
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* @run main/othervm gc.TestObjectAlignment -Xmx20M -XX:-ExplicitGCInvokesConcurrent -XX:ObjectAlignmentInBytes=32
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* @run main/othervm gc.TestObjectAlignment -Xmx20M -XX:-ExplicitGCInvokesConcurrent -XX:ObjectAlignmentInBytes=64
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* @run main/othervm gc.TestObjectAlignment -Xmx20M -XX:-ExplicitGCInvokesConcurrent -XX:ObjectAlignmentInBytes=128
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* @run main/othervm gc.TestObjectAlignment -Xmx20M -XX:-ExplicitGCInvokesConcurrent -XX:ObjectAlignmentInBytes=256
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*/
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public class TestObjectAlignment {
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public static byte[] garbage;
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public static void main(String[] args) throws Exception {
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for (int i = 0; i < 10; i++) {
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garbage = new byte[1000];
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System.gc();
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}
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}
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}
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