jdk8-mips64-public/hotspot: test/gc/class_unloading/TestG1ClassUnloadingHWM.java@6cbff0651f1a (annotated)

test/gc/class_unloading/TestG1ClassUnloadingHWM.java@6cbff0651f1a (annotated)

test/gc/class_unloading/TestG1ClassUnloadingHWM.java

Mon, 06 Nov 2017 16:51:47 +0800

author: aoqi
date: Mon, 06 Nov 2017 16:51:47 +0800
changeset 7997: 6cbff0651f1a
parent 7238: 85f4c4ecc963
permissions: -rw-r--r--

[Code Reorganization] remove trailing whitespace to pass jcheck test

 /*
  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 /*
  * @test
  * @key gc
  * @bug 8049831
  * @library /testlibrary /testlibrary/whitebox
  * @build TestG1ClassUnloadingHWM
  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  * @run driver TestG1ClassUnloadingHWM
  * @summary Test that -XX:-ClassUnloadingWithConcurrentMark will trigger a Full GC when more than MetaspaceSize metadata is allocated.
  */
 import com.oracle.java.testlibrary.OutputAnalyzer;
 import com.oracle.java.testlibrary.ProcessTools;
 import java.util.ArrayList;
 import java.util.Arrays;
 import sun.hotspot.WhiteBox;
 public class TestG1ClassUnloadingHWM {
   private static long MetaspaceSize = 32 * 1024 * 1024;
   private static long YoungGenSize  = 32 * 1024 * 1024;
   private static OutputAnalyzer run(boolean enableUnloading) throws Exception {
     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
       "-Xbootclasspath/a:.",
       "-XX:+UnlockDiagnosticVMOptions",
       "-XX:+WhiteBoxAPI",
       "-XX:MetaspaceSize=" + MetaspaceSize,
       "-Xmn" + YoungGenSize,
       "-XX:+UseG1GC",
       "-XX:" + (enableUnloading ? "+" : "-") + "ClassUnloadingWithConcurrentMark",
       "-XX:+PrintHeapAtGC",
       "-XX:+PrintGCDetails",
       TestG1ClassUnloadingHWM.AllocateBeyondMetaspaceSize.class.getName(),
       "" + MetaspaceSize,
       "" + YoungGenSize);
     return new OutputAnalyzer(pb.start());
   }
   public static OutputAnalyzer runWithG1ClassUnloading() throws Exception {
     return run(true);
   }
   public static OutputAnalyzer runWithoutG1ClassUnloading() throws Exception {
     return run(false);
   }
   public static void testWithoutG1ClassUnloading() throws Exception {
     // -XX:-ClassUnloadingWithConcurrentMark is used, so we expect a full GC instead of a concurrent cycle.
     OutputAnalyzer out = runWithoutG1ClassUnloading();
     out.shouldMatch(".*Full GC.*");
     out.shouldNotMatch(".*initial-mark.*");
   }
   public static void testWithG1ClassUnloading() throws Exception {
     // -XX:+ClassUnloadingWithConcurrentMark is used, so we expect a concurrent cycle instead of a full GC.
     OutputAnalyzer out = runWithG1ClassUnloading();
     out.shouldMatch(".*initial-mark.*");
     out.shouldNotMatch(".*Full GC.*");
   }
   public static void main(String args[]) throws Exception {
     testWithG1ClassUnloading();
     testWithoutG1ClassUnloading();
   }
   public static class AllocateBeyondMetaspaceSize {
     public static Object dummy;
     public static void main(String [] args) throws Exception {
       if (args.length != 2) {
         throw new IllegalArgumentException("Usage: <MetaspaceSize> <YoungGenSize>");
       }
       WhiteBox wb = WhiteBox.getWhiteBox();
       // Allocate past the MetaspaceSize limit
       long metaspaceSize = Long.parseLong(args[0]);
       long allocationBeyondMetaspaceSize  = metaspaceSize * 2;
       long metaspace = wb.allocateMetaspace(null, allocationBeyondMetaspaceSize);
       long youngGenSize = Long.parseLong(args[1]);
       triggerYoungGCs(youngGenSize);
       wb.freeMetaspace(null, metaspace, metaspace);
     }
     public static void triggerYoungGCs(long youngGenSize) {
       long approxAllocSize = 32 * 1024;
       long numAllocations  = 2 * youngGenSize / approxAllocSize;
       for (long i = 0; i < numAllocations; i++) {
         dummy = new byte[(int)approxAllocSize];
       }
     }
   }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

test/gc/class_unloading/TestG1ClassUnloadingHWM.java@6cbff0651f1a (annotated)

test/gc/class_unloading/TestG1ClassUnloadingHWM.java