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annotate test/gc/g1/TestRegionAlignment.java @ 10239:f14063dcd52a

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8013791: G1: G1CollectorPolicy::initialize_flags() may set min_alignment > max_alignment Summary: Make sure max alignemnt is at least as large as min alignment Reviewed-by: johnc, jmasa, tschatzl
author brutisso
date Mon, 06 May 2013 09:16:14 +0200
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f14063dcd52a 8013791: G1: G1CollectorPolicy::initialize_flags() may set min_alignment > max_alignment
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1 /*
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2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
f14063dcd52a 8013791: G1: G1CollectorPolicy::initialize_flags() may set min_alignment > max_alignment
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6 * under the terms of the GNU General Public License version 2 only, as
f14063dcd52a 8013791: G1: G1CollectorPolicy::initialize_flags() may set min_alignment > max_alignment
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
f14063dcd52a 8013791: G1: G1CollectorPolicy::initialize_flags() may set min_alignment > max_alignment
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
f14063dcd52a 8013791: G1: G1CollectorPolicy::initialize_flags() may set min_alignment > max_alignment
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
f14063dcd52a 8013791: G1: G1CollectorPolicy::initialize_flags() may set min_alignment > max_alignment
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23
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24 /*
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25 * @test TestRegionAlignment.java
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26 * @bug 8013791
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27 * @summary Make sure that G1 ergonomics pick a heap size that is aligned with the region size
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28 * @run main/othervm -XX:+UseG1GC -XX:G1HeapRegionSize=32m -XX:MaxRAM=555m TestRegionAlignment
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29 *
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30 * When G1 ergonomically picks a maximum heap size it must be aligned to the region size.
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31 * This test tries to get the VM to pick a small and unaligned heap size (by using MaxRAM=555) and a
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32 * large region size (by using -XX:G1HeapRegionSize=32m). This will fail without the fix for 8013791.
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33 */
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34 public class TestRegionAlignment {
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35 public static void main(String[] args) { }
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36 }