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annotate test/compiler/6885584/Test6885584.java @ 15001:27c04ee36dcb

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author Lukas Stadler <lukas.stadler@oracle.com>
date Mon, 07 Apr 2014 11:32:04 +0200
parents c18cbe5936b8
children
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1 /*
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2 * Copyright (c) 2009, 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
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6 * under the terms of the GNU General Public License version 2 only, as
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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
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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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
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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 /**
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26 * @test
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27 * @bug 6885584
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28 * @summary A particular class structure causes large allocation spike for jit
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29 *
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30 * @run main/othervm -Xbatch Test6885584
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31 */
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32
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34
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35 public class Test6885584 {
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36 static private int i1;
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37 static private int i2;
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38 static private int i3;
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39
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40 static int limit = Integer.MAX_VALUE - 8;
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41
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42 public static void main(String args[]) {
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43 // Run long enough to trigger an OSR
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44 for(int j = 200000; j != 0; j--) {
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45 }
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46
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47 // This must reference a field
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48 i1 = i2;
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49
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50 // The resource leak is roughly proportional to this initial value
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51 for(int k = Integer.MAX_VALUE - 1; k != 0; k--) {
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52 // Make sure the body does some work
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53 if(i2 > i3)i1 = k;
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54 if (k <= limit) break;
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55 }
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56 }
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57
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58 }