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annotate test/compiler/6855164/Test.java @ 6972:bd7a7ce2e264

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6830717: replay of compilations would help with debugging Summary: When java process crashed in compiler thread, repeat the compilation process will help finding root cause. This is done with using SA dump application class data and replay data from core dump, then use debug version of jvm to recompile the problematic java method. Reviewed-by: kvn, twisti, sspitsyn Contributed-by: yumin.qi@oracle.com
author minqi
date Mon, 12 Nov 2012 14:03:53 -0800
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 * @test
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26 * @bug 6855164
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27 * @summary SIGSEGV during compilation of method involving loop over CharSequence
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28 * @run main/othervm -Xbatch Test
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29 */
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30
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31 public class Test{
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32 public static void main(String[] args) throws Exception {
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33 StringBuffer builder = new StringBuffer();
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34
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35 for(int i = 0; i < 100; i++)
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36 builder.append("I am the very model of a modern major general\n");
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37
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38 for(int j = 0; j < builder.length(); j++){
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39 previousSpaceIndex(builder, j);
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40 }
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41 }
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42
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43 private static final int previousSpaceIndex(CharSequence sb, int seek) {
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44 seek--;
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45 while (seek > 0) {
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46 if (sb.charAt(seek) == ' ') {
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47 while (seek > 0 && sb.charAt(seek - 1) == ' ')
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48 seek--;
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49 return seek;
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50 }
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51 seek--;
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52 }
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53 return 0;
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54 }
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55 }