92 lines
3.0 KiB
Java
92 lines
3.0 KiB
Java
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/*
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* Copyright (c) 2024, 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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/*
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* @test id=platform
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* @bug 8323782
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* @summary Stress test Thread.interrupt on a target Thread doing a selection operation
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* @run main LotsOfInterrupts 200000
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*/
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/*
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* @test id=virtual
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* @run main/othervm -DthreadFactory=virtual LotsOfInterrupts 200000
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*/
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import java.nio.channels.Selector;
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import java.time.Instant;
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import java.util.concurrent.Phaser;
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import java.util.concurrent.ThreadFactory;
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public class LotsOfInterrupts {
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public static void main(String[] args) throws Exception {
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int iterations;
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if (args.length > 0) {
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iterations = Integer.parseInt(args[0]);
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} else {
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iterations = 500_000;
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}
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ThreadFactory factory;
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String value = System.getProperty("threadFactory");
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if ("virtual".equals(value)) {
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factory = Thread.ofVirtual().factory();
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} else {
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factory = Thread.ofPlatform().factory();
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}
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var phaser = new Phaser(2);
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Thread thread = factory.newThread(() -> {
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try (Selector sel = Selector.open()) {
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for (int i = 0; i < iterations; i++) {
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phaser.arriveAndAwaitAdvance();
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sel.select();
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// clear interrupt status and consume wakeup
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Thread.interrupted();
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sel.selectNow();
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}
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} catch (Throwable ex) {
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ex.printStackTrace();
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}
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});
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thread.start();
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long lastTimestamp = System.currentTimeMillis();
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for (int i = 0; i < iterations; i++) {
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phaser.arriveAndAwaitAdvance();
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thread.interrupt();
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long currentTime = System.currentTimeMillis();
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if ((currentTime - lastTimestamp) > 500) {
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System.out.format("%s %d iterations remaining ...%n", Instant.now(), (iterations - i));
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lastTimestamp = currentTime;
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}
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}
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thread.join();
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}
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}
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