1 /* 2 * Copyright (c) 2015, 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 import java.util.ArrayList; 25 import java.util.List; 26 27 import jdk.test.lib.Platform; 28 import jdk.test.lib.ProcessTools; 29 import jdk.test.lib.OutputAnalyzer; 30 import jdk.test.lib.Utils; 31 import jdk.test.lib.apps.LingeredApp; 32 33 /* 34 * @test 35 * @library /test/lib/share/classes 36 * @library /testlibrary 37 * @build jdk.test.lib.* 38 * @build jdk.test.lib.apps.* 39 * @run main TestClassLoaderStats 40 */ 41 public class TestClassLoaderStats { 42 43 public static void main(String[] args) throws Exception { 44 if (!Platform.shouldSAAttach()) { 45 System.out.println("SA attach not expected to work - test skipped."); 46 return; 47 } 48 49 LingeredApp app = null; 50 try { 51 List<String> vmArgs = new ArrayList<String>(); 52 vmArgs.add("-XX:+UsePerfData"); 53 vmArgs.addAll(Utils.getVmOptions()); 54 app = LingeredApp.startApp(vmArgs); 55 56 System.out.println("Attaching sun.jvm.hotspot.tools.ClassLoaderStats to " + app.getPid()); 57 ProcessBuilder processBuilder = ProcessTools.createJavaProcessBuilder( 58 "-XX:+UsePerfData", 59 "sun.jvm.hotspot.tools.ClassLoaderStats", 60 Long.toString(app.getPid())); 61 OutputAnalyzer output = ProcessTools.executeProcess(processBuilder); 62 System.out.println(output.getOutput()); 63 64 output.shouldHaveExitValue(0); 65 output.shouldContain("Debugger attached successfully."); 66 // The class loader stats header needs to be presented in the output: 67 output.shouldMatch("class_loader\\W+classes\\W+bytes\\W+parent_loader\\W+alive?\\W+type"); 68 output.stderrShouldNotMatch("[E|e]xception"); 69 output.stderrShouldNotMatch("[E|e]rror"); 70 } finally { 71 LingeredApp.stopApp(app); 72 } 73 } 74 75 }