test/hotspot/jtreg/vmTestbase/nsk/monitoring/share/thread/NativeBlockedThread.java

/*
 * Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package nsk.monitoring.share.thread;

import nsk.share.log.Log;
import java.lang.management.ThreadInfo;
import java.lang.management.MonitorInfo;
import java.lang.management.LockInfo;
import nsk.share.test.LocalRandom;
import nsk.monitoring.share.Monitoring;

/**
 * NativeBlockedThread is RecursiveMonitoringThread that blocks to enter
 * monitor using JNI function MonitorEnter.
 */
public class NativeBlockedThread extends BlockedThread {
        private static final String[] expectedMethods = {
                "nsk.monitoring.share.thread.NativeBlockedThread.runInside",
                "nsk.monitoring.share.thread.NativeBlockedThread.nativeBlock"
        };

        static {
                System.loadLibrary("NativeBlockedThread");
        }

        public NativeBlockedThread(Log log, RunType recursionType, int maxDepth, LockerThread lockerThread) {
                super(log, recursionType, maxDepth, lockerThread);
        }

        protected void runInside() {
                synchronized (readyLock) {
                        ready = true;
                        readyLock.notifyAll();
                }
                nativeBlock(lock);
        }

        protected native void nativeBlock(Object lock);

        protected boolean isStackTraceElementExpected(StackTraceElement element) {
                return super.isStackTraceElementExpected(element) || checkStackTraceElement(element, expectedMethods);
        }
}