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 jdk.test.lib.Platform;

    25 import jdk.test.lib.ProcessTools;

    26 import jdk.test.lib.OutputAnalyzer;

    27 

    28 /*

    29  * @test

    30  * @library /testlibrary

    31  * @build jdk.test.lib.*

    32  * @run main TestClassLoaderStats

    33  */

    34 public class TestClassLoaderStats {

    35 

    36     public static void main(String[] args) throws Exception {

    37         if (!Platform.shouldSAAttach()) {

    38             System.out.println("SA attach not expected to work - test skipped.");

    39             return;

    40         }

    41 

    42         ProcessBuilder processBuilder = ProcessTools.createJavaProcessBuilder(

    43                 "-XX:+UsePerfData",

    44                 "sun.jvm.hotspot.tools.ClassLoaderStats",

    45                 Integer.toString(ProcessTools.getProcessId()));

    46         OutputAnalyzer output = ProcessTools.executeProcess(processBuilder);

    47         System.out.println(output.getOutput());

    48 

    49         output.shouldHaveExitValue(0);

    50         output.shouldContain("Debugger attached successfully.");

    51         // The class loader stats header needs to be presented in the output:

    52         output.shouldMatch("class_loader\\W+classes\\W+bytes\\W+parent_loader\\W+alive?\\W+type");

    53         output.stderrShouldNotMatch("[E|e]xception");

    54         output.stderrShouldNotMatch("[E|e]rror");

    55     }

    56 

    57 }