1 /* 2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test TestPrintClassHistogram 26 * @bug 8004924 27 * @summary Checks that jmap -heap contains the flag ClassMetaspaceSize 28 * @library /testlibrary 29 * @run main/othervm TestPrintClassHistogram launch BeforeGC 30 * @run main/othervm TestPrintClassHistogram launch AfterGC 31 * @run main/othervm TestPrintClassHistogram launch BeforeGC AfterGC 32 */ 33 34 import java.util.List; 35 import java.util.ArrayList; 36 import java.util.Arrays; 37 38 import com.oracle.java.testlibrary.OutputAnalyzer; 39 import com.oracle.java.testlibrary.ProcessTools; 40 41 public class TestPrintClassHistogram { 42 public static void main(String[] args) throws Exception { 43 if (shouldLaunchTest(args)) { 44 String[] testArgs = createTestArguments(args); 45 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(testArgs); 46 47 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 48 output.shouldNotContain("WARNING"); 49 output.shouldContain("java.lang.Class"); // there will always be at least one java.lang.Class instance 50 output.shouldContain("java.lang.String"); // there will always be at least one java.lang.String instance 51 output.shouldHaveExitValue(0); 52 } else { 53 System.gc(); 54 } 55 } 56 57 private static boolean shouldLaunchTest(String[] cmdlineArguments) { 58 return cmdlineArguments[0].equals("launch"); 59 } 60 61 private static String[] createTestArguments(String[] cmdlineArguments) { 62 List<String> cmdlineArgs = Arrays.asList(cmdlineArguments); 63 List<String> testArgs = new ArrayList<String>(); 64 65 if (cmdlineArgs.contains("BeforeGC")) { 66 testArgs.add("-XX:+PrintClassHistogramBeforeFullGC"); 67 } 68 if (cmdlineArgs.contains("AfterGC")) { 69 testArgs.add("-XX:+PrintClassHistogramBeforeFullGC"); 70 } 71 72 testArgs.add("TestPrintClassHistogram"); 73 testArgs.add("run"); 74 75 return testArgs.toArray(new String[testArgs.size()]); 76 } 77 }