63 lines
2.3 KiB
Java
63 lines
2.3 KiB
Java
/*
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* Copyright (c) 2021, 2022, 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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import java.util.concurrent.atomic.AtomicReference;
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/**
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* @test JNIMonitor
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* @summary Tests that JNI monitors work correctly with virtual threads
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* @library /test/lib
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* @compile --enable-preview -source ${jdk.version} JNIMonitor.java
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* @run main/native/othervm --enable-preview JNIMonitor
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*/
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public class JNIMonitor {
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// straight-forward interface to JNI monitor functions
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static native int monitorEnter(Object o);
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static native int monitorExit(Object o);
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static {
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System.loadLibrary("JNIMonitor");
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}
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public static void main(String[] args) throws Throwable {
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final Object monitor = new Object();
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final AtomicReference<Throwable> exception = new AtomicReference();
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Thread.ofVirtual().start(() -> {
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try {
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int res = monitorEnter(monitor);
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Asserts.assertTrue(res == 0, "monitorEnter should return 0.");
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Thread.yield();
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res = monitorExit(monitor);
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Asserts.assertTrue(res == 0, "monitorExit should return 0.");
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} catch (Throwable t) {
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exception.set(t);
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}
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}).join();
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if (exception.get() != null) {
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throw exception.get();
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}
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}
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}
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