test/hotspot/jtreg/vmTestbase/nsk/share/gc/ThreadedGCTest.java

/*
 * Copyright (c) 2005, 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;

import nsk.share.runner.*;
import nsk.share.test.ExecutionController;
import nsk.share.Consts;

/**
 * Test that executes a number of tasks.
 *
 * How these tasks are used is determined by MultiRunner.
 * Usually they are executed in separate threads in cycle
 * for some time or for some iterations.
 *
 * @see nsk.share.runner.MultiRunner
 * @see nsk.share.runner.ThreadsRunner
 */
public abstract class ThreadedGCTest extends GCTestBase implements MultiRunnerAware {
        private MultiRunner runner;

        /**
         * Create a task with index i.
         *
         * Subclasses should to override this method
         * to created neccessary tasks.
         *
         * @param i index of task
         * @return task to run or null
         */
        protected abstract Runnable createRunnable(int i);

        protected ExecutionController getExecutionController() {
                return runner.getExecutionController();
        }

        protected final boolean runThreads() {
                for (int i = 0; i < runParams.getNumberOfThreads(); ++i) {
                        Runnable runnable = createRunnable(i);
                        if (runnable != null)
                                runner.add(runnable);
                }
                runner.run();
                return runner.isSuccessful();
        }

        public void run() {
                if (!runThreads())
                        setFailed(true);
        }

        public final void setRunner(MultiRunner runner) {
                this.runner = runner;
        }
}