Mercurial > hg > graal-jvmci-8

annotate test/gc/ergonomics/TestDynamicNumberOfGCThreads.java @ 24110:a8378ff1936d

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remove use of cache in jdk.vm.ci.services.Services (GR-3293)
author Doug Simon <doug.simon@oracle.com>
date Mon, 20 Mar 2017 10:46:02 +0100
parents 83dc7e55f715
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2015, 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 TestDynamicNumberOfGCThreads
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26 * @bug 8017462
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27 * @summary Ensure that UseDynamicNumberOfGCThreads runs
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28 * @requires vm.gc=="null"
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29 * @key gc
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30 * @library /testlibrary
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31 */
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32
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33 import com.oracle.java.testlibrary.ProcessTools;
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34 import com.oracle.java.testlibrary.OutputAnalyzer;
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35
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36 public class TestDynamicNumberOfGCThreads {
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37 public static void main(String[] args) throws Exception {
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38
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39 testDynamicNumberOfGCThreads("UseConcMarkSweepGC");
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40
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41 testDynamicNumberOfGCThreads("UseG1GC");
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42
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43 testDynamicNumberOfGCThreads("UseParallelGC");
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44 }
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45
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46 private static void verifyDynamicNumberOfGCThreads(OutputAnalyzer output) {
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47 output.shouldHaveExitValue(0); // test should run succesfully
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48 output.shouldContain("new_active_workers");
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49 }
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50
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51 private static void testDynamicNumberOfGCThreads(String gcFlag) throws Exception {
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52 // UseDynamicNumberOfGCThreads and TraceDynamicGCThreads enabled
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53 String[] baseArgs = {"-XX:+" + gcFlag, "-Xmx10M", "-XX:+PrintGCDetails", "-XX:+UseDynamicNumberOfGCThreads", "-XX:+TraceDynamicGCThreads", GCTest.class.getName()};
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54
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55 // Base test with gc and +UseDynamicNumberOfGCThreads:
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56 ProcessBuilder pb_enabled = ProcessTools.createJavaProcessBuilder(baseArgs);
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57 verifyDynamicNumberOfGCThreads(new OutputAnalyzer(pb_enabled.start()));
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58
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59 // Ensure it also works on uniprocessors or if user specifies -XX:ParallelGCThreads=1:
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60 String[] extraArgs = {"-XX:+UnlockDiagnosticVMOptions", "-XX:+ForceDynamicNumberOfGCThreads", "-XX:ParallelGCThreads=1"};
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61 String[] finalArgs = new String[baseArgs.length + extraArgs.length];
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62 System.arraycopy(extraArgs, 0, finalArgs, 0, extraArgs.length);
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63 System.arraycopy(baseArgs, 0, finalArgs, extraArgs.length, baseArgs.length);
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64 pb_enabled = ProcessTools.createJavaProcessBuilder(finalArgs);
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65 verifyDynamicNumberOfGCThreads(new OutputAnalyzer(pb_enabled.start()));
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66 }
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67
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68 static class GCTest {
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69 private static byte[] garbage;
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70 public static void main(String [] args) {
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71 System.out.println("Creating garbage");
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72 // create 128MB of garbage. This should result in at least one GC
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73 for (int i = 0; i < 1024; i++) {
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74 garbage = new byte[128 * 1024];
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75 }
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76 System.out.println("Done");
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77 }
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78 }
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79 }