121 lines
4.3 KiB
Java
121 lines
4.3 KiB
Java
/*
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* Copyright (c) 2017, 2021, 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
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* @bug 8167108 8266130
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* @summary Stress test java.lang.Thread.interrupt() at thread exit.
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* @run main/othervm InterruptAtExit
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*/
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import java.util.concurrent.CountDownLatch;
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public class InterruptAtExit extends Thread {
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private final static int DEF_TIME_MAX = 30; // default max # secs to test
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private final static String PROG_NAME = "InterruptAtExit";
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public CountDownLatch exitSyncObj = new CountDownLatch(1);
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public CountDownLatch startSyncObj = new CountDownLatch(1);
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@Override
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public void run() {
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// Tell main thread we have started.
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startSyncObj.countDown();
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try {
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// Wait for main thread to tell us to race to the exit.
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exitSyncObj.await();
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} catch (InterruptedException e) {
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// Ignore because we are testing java.lang.Thread.interrupt()
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// and one may arrive before we leave the 'try { }' block.
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}
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}
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public static void main(String[] args) {
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int timeMax = 0;
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if (args.length == 0) {
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timeMax = DEF_TIME_MAX;
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} else {
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try {
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timeMax = Integer.parseUnsignedInt(args[0]);
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} catch (NumberFormatException nfe) {
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System.err.println("'" + args[0] + "': invalid timeMax value.");
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usage();
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}
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}
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System.out.println("About to execute for " + timeMax + " seconds.");
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long count = 0;
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long start_time = System.currentTimeMillis();
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while (System.currentTimeMillis() < start_time + (timeMax * 1000)) {
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count++;
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InterruptAtExit thread = new InterruptAtExit();
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thread.start();
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try {
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// Wait for the worker thread to get going.
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thread.startSyncObj.await();
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// Tell the worker thread to race to the exit and the
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// Thread.interrupt() calls will come in during thread exit.
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thread.exitSyncObj.countDown();
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while (true) {
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thread.interrupt();
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if (!thread.isAlive()) {
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// Done with Thread.interrupt() calls since
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// thread is not alive.
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break;
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}
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}
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} catch (InterruptedException e) {
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throw new Error("Unexpected: " + e);
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}
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try {
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thread.join();
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} catch (InterruptedException e) {
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throw new Error("Unexpected: " + e);
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}
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thread.interrupt();
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}
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System.out.println("Executed " + count + " loops in " + timeMax +
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" seconds.");
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String cmd = System.getProperty("sun.java.command");
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if (cmd != null && !cmd.startsWith("com.sun.javatest.regtest.agent.MainWrapper")) {
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// Exit with success in a non-JavaTest environment:
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System.exit(0);
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}
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}
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public static void usage() {
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System.err.println("Usage: " + PROG_NAME + " [time_max]");
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System.err.println("where:");
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System.err.println(" time_max max looping time in seconds");
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System.err.println(" (default is " + DEF_TIME_MAX +
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" seconds)");
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System.exit(1);
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}
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}
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