1 /*

     2  * Copyright (c) 2017, 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 8166188

    27  * @summary Test call of native function with JNI weak global ref.

    28  * @modules java.base

    29  * @run main/othervm/native CallWithJNIWeak

    30  */

    31 

    32 public class CallWithJNIWeak {

    33     static {

    34         System.loadLibrary("CallWithJNIWeak");

    35     }

    36 

    37     private static native void testJNIFieldAccessors(CallWithJNIWeak o);

    38 

    39     // The field initializations must be kept in sync with the JNI code

    40     // which reads verifies the values of these fields.

    41     private int i = 1;

    42     private long j = 2;

    43     private boolean z = true;

    44     private char c = 'a';

    45     private short s = 3;

    46     private float f = 1.0f;

    47     private double d = 2.0;

    48     private Object l;

    49 

    50     private CallWithJNIWeak() {

    51         this.l = this;

    52     }

    53 

    54     private native void weakReceiverTest0();

    55     private void weakReceiverTest() {

    56         weakReceiverTest0();

    57     }

    58 

    59     private synchronized void synchonizedWeakReceiverTest() {

    60         this.notifyAll();

    61     }

    62 

    63 

    64     private static native void runTests(CallWithJNIWeak o);

    65 

    66     public static void main(String[] args) {

    67         CallWithJNIWeak w = new CallWithJNIWeak();

    68         for (int i = 0; i < 20000; i++) {

    69             runTests(w);

    70         }

    71     }

    72 }