68 lines
2.0 KiB
Java
68 lines
2.0 KiB
Java
/*
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* Copyright (c) 2015, 2020, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import jdk.test.lib.Asserts;
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/*
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* @test
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* @bug 4784641
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* @summary -Xcheck:jni overly strict in JNI method IsSameObject
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* Fixed in JDK1.3.1_10
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* Fixed in JDK1.4.1_07
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* @modules java.base/jdk.internal.misc
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* @library /test/lib
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* @run main/othervm/native -Xcheck:jni SameObject
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*/
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public class SameObject {
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public Object obj = new Object();
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static {
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System.loadLibrary("SameObject");
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}
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public native void createWeakRef(Object obj);
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public native int checkWeakRef();
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public static void main(String[] args) throws Exception {
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SameObject sameObject = new SameObject();
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int result = sameObject.test();
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Asserts.assertEquals(result, 0, "WeakRef still alive");
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}
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public int test() {
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createWeakRef(obj);
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obj = null;
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System.gc();
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try {
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Thread.sleep(2000);
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} catch (InterruptedException ex) {
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System.out.println("Interrupted");
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}
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return checkWeakRef();
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}
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}
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