--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/lang/management/ThreadMXBean/ThreadDaemonTest.java Tue Feb 24 09:46:29 2015 +0100
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2015, 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.
+ */
+
+import java.lang.management.*;
+import java.util.*;
+import java.util.concurrent.*;
+import java.util.concurrent.atomic.*;
+
+/*
+ * @test
+ * @bug 6588467
+ * @summary Basic test of ThreadInfo.isDaemon
+ * @author Jeremy Manson
+ */
+public class ThreadDaemonTest {
+
+ public static void main(String[] args) throws Exception {
+ final int NUM_THREADS = 20;
+ final String THREAD_PREFIX = "ThreadDaemonTest-";
+
+ final CountDownLatch started = new CountDownLatch(NUM_THREADS);
+ final CountDownLatch finished = new CountDownLatch(1);
+ final AtomicReference<Exception> fail = new AtomicReference<>(null);
+
+ Thread[] allThreads = new Thread[NUM_THREADS];
+ ThreadMXBean mbean = ManagementFactory.getThreadMXBean();
+ Random rand = new Random();
+
+ for (int i = 0; i < NUM_THREADS; i++) {
+ allThreads[i] = new Thread(new Runnable() {
+ public void run() {
+ try {
+ started.countDown();
+ finished.await();
+ } catch (InterruptedException e) {
+ fail.set(new Exception(
+ "Unexpected InterruptedException"));
+ }
+ }
+ }, THREAD_PREFIX + i);
+ allThreads[i].setDaemon(rand.nextBoolean());
+ allThreads[i].start();
+ }
+
+ started.await();
+ try {
+ ThreadInfo[] allThreadInfos = mbean.dumpAllThreads(false, false);
+ int count = 0;
+ for (int i = 0; i < allThreadInfos.length; i++) {
+ String threadName = allThreadInfos[i].getThreadName();
+ if (threadName.startsWith(THREAD_PREFIX)) {
+ count++;
+ String[] nameAndNumber = threadName.split("-");
+ int threadNum = Integer.parseInt(nameAndNumber[1]);
+ if (allThreads[threadNum].isDaemon() !=
+ allThreadInfos[i].isDaemon()) {
+ throw new RuntimeException(
+ allThreads[threadNum] + " is not like " +
+ allThreadInfos[i] + ". TEST FAILED.");
+ }
+ }
+ }
+ if (count != NUM_THREADS) {
+ throw new RuntimeException("Wrong number of threads examined");
+ }
+ }
+ finally { finished.countDown(); }
+
+ for (int i = 0; i < NUM_THREADS; i++) {
+ allThreads[i].join();
+ }
+ if (fail.get() != null) {
+ throw fail.get();
+ }
+ }
+}