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annotate test/runtime/interned/SanityTest.java @ 21113:0cf5897db25a

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Better assertion message for NULL deference in graalJavaAccess
author Tom Rodriguez <tom.rodriguez@oracle.com>
date Wed, 22 Apr 2015 16:42:05 -0700
parents ede380e13960
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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
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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 SanityTest
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26 * @summary Sanity check of String.intern() & GC
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27 * @library /testlibrary /testlibrary/whitebox
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28 * @build SanityTest
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29 * @run main ClassFileInstaller sun.hotspot.WhiteBox
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30 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI SanityTest
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31 */
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32
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33 import java.util.*;
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34 import sun.hotspot.WhiteBox;
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35
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36
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37 public class SanityTest {
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38 public static Object tmp;
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39 public static void main(String... args) {
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40
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41 WhiteBox wb = WhiteBox.getWhiteBox();
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42 StringBuilder sb = new StringBuilder();
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43 sb.append("1234x"); sb.append("x56789");
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44 String str = sb.toString();
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45
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46 if (wb.isInStringTable(str)) {
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47 throw new RuntimeException("String " + str + " is already interned");
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48 }
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49 str.intern();
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50 if (!wb.isInStringTable(str)) {
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51 throw new RuntimeException("String " + str + " is not interned");
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52 }
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53 str = sb.toString();
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54 wb.fullGC();
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55 if (wb.isInStringTable(str)) {
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56 throw new RuntimeException("String " + str + " is in StringTable even after GC");
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57 }
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58 }
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59 }