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1 /* |
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2 * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved. |
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3 * |
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4 * This code is free software; you can redistribute it and/or modify it |
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5 * under the terms of the GNU General Public License version 2 only, as |
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6 * published by the Free Software Foundation. |
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7 * |
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8 * This code is distributed in the hope that it will be useful, but WITHOUT |
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9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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11 * version 2 for more details (a copy is included in the LICENSE file that |
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12 * accompanied this code). |
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13 * |
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14 * You should have received a copy of the GNU General Public License version |
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15 * 2 along with this work; if not, write to the Free Software Foundation, |
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16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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17 * |
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18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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19 * or visit www.oracle.com if you need additional information or have any |
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20 * questions. |
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21 * |
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22 */ |
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23 |
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24 /* |
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25 * @test TestStringInternCleanup |
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26 * @summary Check that Shenandoah cleans up interned strings |
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27 * @key gc |
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28 * @requires vm.gc.Shenandoah |
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29 * |
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30 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+ClassUnloadingWithConcurrentMark -Xmx64m -XX:ShenandoahGCHeuristics=passive -XX:+ShenandoahDegeneratedGC -XX:+ShenandoahVerify TestStringInternCleanup |
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31 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+ClassUnloadingWithConcurrentMark -Xmx64m -XX:ShenandoahGCHeuristics=passive -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify TestStringInternCleanup |
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32 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+ClassUnloadingWithConcurrentMark -Xmx64m -XX:ShenandoahGCHeuristics=passive -XX:+ShenandoahDegeneratedGC TestStringInternCleanup |
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33 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+ClassUnloadingWithConcurrentMark -Xmx64m -XX:ShenandoahGCHeuristics=passive -XX:-ShenandoahDegeneratedGC TestStringInternCleanup |
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34 * |
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35 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+ClassUnloadingWithConcurrentMark -Xmx64m -XX:ShenandoahGCHeuristics=aggressive TestStringInternCleanup |
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36 * |
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37 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+ClassUnloadingWithConcurrentMark -Xmx64m -XX:ShenandoahGCHeuristics=adaptive -XX:+ShenandoahVerify TestStringInternCleanup |
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38 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+ClassUnloadingWithConcurrentMark -Xmx64m -XX:ShenandoahGCHeuristics=traversal -XX:+ShenandoahVerify TestStringInternCleanup |
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39 * |
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40 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+ClassUnloadingWithConcurrentMark -Xmx64m -XX:ShenandoahGCHeuristics=adaptive TestStringInternCleanup |
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41 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+ClassUnloadingWithConcurrentMark -Xmx64m -XX:ShenandoahGCHeuristics=static TestStringInternCleanup |
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42 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+ClassUnloadingWithConcurrentMark -Xmx64m -XX:ShenandoahGCHeuristics=compact TestStringInternCleanup |
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43 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+ClassUnloadingWithConcurrentMark -Xmx64m -XX:ShenandoahGCHeuristics=traversal TestStringInternCleanup |
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44 * |
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45 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:-ClassUnloadingWithConcurrentMark -Xmx64m TestStringInternCleanup |
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46 */ |
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47 |
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48 public class TestStringInternCleanup { |
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49 |
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50 static final int COUNT = 1_000_000; |
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51 static final int WINDOW = 1_000; |
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52 |
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53 static final String[] reachable = new String[WINDOW]; |
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54 |
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55 public static void main(String[] args) throws Exception { |
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56 int rIdx = 0; |
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57 for (int c = 0; c < COUNT; c++) { |
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58 reachable[rIdx] = ("LargeInternedString" + c).intern(); |
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59 rIdx++; |
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60 if (rIdx >= WINDOW) { |
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61 rIdx = 0; |
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62 } |
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63 } |
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64 } |
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65 |
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66 } |