test/hotspot/jtreg/vmTestbase/nsk/jvmti/AttachOnDemand/attach022/attach022Target.java

/*
 * Copyright (c) 2008, 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
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 */
package nsk.jvmti.AttachOnDemand.attach022;

import nsk.share.ClassUnloader;
import nsk.share.aod.TargetApplicationWaitingAgents;

class ClassForAllocationEventsTest {

}

public class attach022Target extends TargetApplicationWaitingAgents {

    static private native boolean shutdownAgent(int expectedTaggedObjectsCounter);

    static final int TEST_ALLOCATION_NUMBER = 10;

    private void allocateObject() throws InstantiationException, IllegalAccessException {
        log.display("Create instance of " + ClassForAllocationEventsTest.class.getName());
        ClassForAllocationEventsTest.class.newInstance();
    }

    protected void targetApplicationActions() throws Throwable {
        try {
            for (int i = 0; i < TEST_ALLOCATION_NUMBER; i++) {
                allocateObject();
            }

            log.display("Provoking GC");
            ClassUnloader.eatMemory();
        } finally {
            if (!shutdownAgent(TEST_ALLOCATION_NUMBER)) {
                setStatusFailed("Error happened during agent work, see error messages for details");
            }
        }
    }

    public static void main(String[] args) {
        new attach022Target().runTargetApplication(args);
    }
}