1 /*

     2  * Copyright (c) 2019, 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

    26  * @bug 8212117

    27  * @summary Verify JVMTI GetClassStatus returns CLASS_PREPARE after call to Class.forName()

    28  * @run main/othervm/native -agentlib:ClassStatus ClassStatus

    29  */

    30 

    31 

    32 public class ClassStatus {

    33     static {

    34         try {

    35             System.out.println("ClassStatus static block");

    36             System.loadLibrary("ClassStatus");

    37         } catch (UnsatisfiedLinkError ule) {

    38             System.err.println("Could not load ClassStatus library");

    39             System.err.println("java.library.path: "

    40                 + System.getProperty("java.library.path"));

    41             throw ule;

    42         }

    43     }

    44 

    45     static native int check(Class klass);

    46 

    47     public static void main(String[] args) throws ClassNotFoundException {

    48         ClassLoader loader = ClassStatus.class.getClassLoader();

    49         Module module = loader.getUnnamedModule();

    50 

    51         // Load class, but don't initialize it

    52         Class foo2 = Class.forName(module, "Foo2");

    53         Class foo3 = Class.forName("Foo3", false, loader);

    54 

    55         System.out.println("Loaded: " + foo2);

    56         System.out.println("Loaded: " + foo3);

    57 

    58         int status2 = check(foo2);

    59         int status3 = check(foo3);

    60 

    61         new Foo2().bar();

    62         new Foo3().bar();

    63 

    64         if (status2 != 0) {

    65             System.out.println("The agent returned non-zero exit status for Foo2: " + status2);

    66         }

    67         if (status3 != 0) {

    68             System.out.println("The agent returned non-zero exit status for Foo3: " + status3);

    69         }

    70         if (status2 != 0 || status3 != 0) {

    71             throw new RuntimeException("Non-zero status returned from the agent");

    72         }

    73     }

    74 }

    75 

    76 class Foo2 {

    77     static {

    78         System.out.println("Foo2 is initialized");

    79     }

    80     void bar() {

    81         System.out.println("Foo2.bar() is called");

    82     }

    83 }

    84 

    85 class Foo3 {

    86     static {

    87         System.out.println("Foo3 is initialized");

    88     }

    89     void bar() {

    90         System.out.println("Foo3.bar() is called");

    91     }

    92 }