/*
 * 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.share.gc.lock.jni;

import nsk.share.gc.lock.CriticalSectionObjectLocker;
import nsk.share.gc.gp.string.RandomStringProducer;
import nsk.share.TestFailure;

public class StringCriticalLocker extends CriticalSectionObjectLocker<String> {
        private native char criticalNative(long enterTime, long sleepTime);

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

        public StringCriticalLocker(String obj) {
                super(obj);
        }

        protected void criticalSection(long enterTime, long sleepTime) {
//              System.out.println("Lock: " + s);
                char javaHash = hashValue(obj);
                char nativeHash = criticalNative(enterTime, sleepTime);
                if (nativeHash != 0 && nativeHash != javaHash)
//                      throw new TestFailure("Native hash: " + nativeHash + " != Java hash: " + javaHash);
                        throw new TestFailure("Native hash differs from java hash");
        }

        private char hashValue(String s) {
                char hash = 0;
                for (int i = 0; i < s.length(); ++i)
                        hash ^= s.charAt(i);
                return hash;
        }
}