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+/* DeadLockTestTest.java
+Copyright (C) 2011 Red Hat, Inc.
+
+This file is part of IcedTea.
+
+IcedTea is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License as published by
+the Free Software Foundation, version 2.
+
+IcedTea 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with IcedTea; see the file COPYING. If not, write to
+the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version.
+ */
+
+import java.util.ArrayList;
+import net.sourceforge.jnlp.ServerAccess;
+import net.sourceforge.jnlp.ServerAccess.ProcessResult;
+import org.junit.Assert;
+import java.util.Arrays;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import org.junit.BeforeClass;
+
+import org.junit.Test;
+
+public class DeadLockTestTest {
+
+ private static ServerAccess server = new ServerAccess();
+ private static String deadlocktest_1 = "/deadlocktest_1.jnlp";
+ private static String deadlocktest = "/deadlocktest.jnlp";
+
+ @BeforeClass
+ public static void printJavas() throws Exception {
+ ServerAccess.logOutputReprint("Currently runnng javas1 " + countJavaInstances());
+
+ }
+
+ @Test
+ public void testDeadLockTestTerminated() throws Exception {
+ testDeadLockTestTerminatedBody(deadlocktest);
+ testDeadLockTestTerminatedBody(deadlocktest);
+ ServerAccess.logOutputReprint("Currently running javas12 " + countJavaInstances());
+ }
+
+ @Test
+ public void testDeadLockTestTerminated2() throws Exception {
+ testDeadLockTestTerminatedBody(deadlocktest_1);
+ testDeadLockTestTerminatedBody(deadlocktest_1);
+ /**
+ * this happens, when p.p.destroy is called before p.interrupt. and destroyed variable is removedI have no idea why, but it is incorrect.
+ Assert.assertNotNull("return can not be null in no fork process. Was ",pr.returnValue);//in this case forking is forbiden, and sojava throws an exception after destroy
+ */
+ ServerAccess.logOutputReprint("Currently running javas13 " + countJavaInstances());
+ }
+
+ public void testDeadLockTestTerminatedBody(String jnlp) throws Exception {
+ List<String> before = countJavaInstances();
+ ServerAccess.logOutputReprint("java1 " + jnlp + " : " + before.size());
+ ServerAccess.ProcessResult pr = server.executeJavawsHeadless(null, jnlp);
+ assertDeadlockTestLaunched(pr);
+ List<String> after = countJavaInstances();
+ ServerAccess.logOutputReprint("java2 " + jnlp + " : " + after.size());
+ String ss = "This process is hanging more than 30s. Should be killed";
+ Assert.assertFalse("stdout should not contains: " + ss + ", but did", pr.stdout.contains(ss));
+// Assert.assertTrue(pr.stderr.contains("xception"));, exception is thrown by engine,not by application
+ Assert.assertTrue("testDeadLockTestTerminated should be terminated, but wasn't", pr.wasTerminated);
+ Assert.assertNull("Killed process must have null return value. Have not - ", pr.returnValue);
+ killDiff(before, after);
+ List<String> afterKill = countJavaInstances();
+ ServerAccess.logOutputReprint("java3 " + jnlp + " : " + afterKill.size());
+ Assert.assertEquals("assert that just old javas remians", 0, (before.size() - afterKill.size()));
+ }
+
+ @Test
+ public void ensureAtLeasOneJavaIsRunning() throws Exception {
+ Assert.assertTrue("at least one java should be running, but isn't! Javas are probably counted badly", countJavaInstances().size() > 0);
+
+ }
+
+ @Test
+ public void testSimpletest1lunchFork() throws Exception {
+ List<String> before = countJavaInstances();
+ ServerAccess.logOutputReprint("java4: " + before.size());
+ BackgroundDeadlock bd = new BackgroundDeadlock(deadlocktest_1, null);
+ bd.start();
+ Thread.sleep(ServerAccess.PROCESS_TIMEOUT * 2 / 3);
+ List<String> during = countJavaInstances();
+ ServerAccess.logOutputReprint("java5: " + during.size());
+ waitForBackgroundDeadlock(bd);
+ List<String> after = countJavaInstances();
+ ServerAccess.logOutputReprint("java6: " + after.size());
+ Assert.assertNotNull("proces inside background deadlock cant be null. It was.", bd.getPr());
+ assertDeadlockTestLaunched(bd.getPr());
+ killDiff(before, during);
+ List<String> afterKill = countJavaInstances();
+ ServerAccess.logOutputReprint("java66: " + afterKill.size());
+ Assert.assertEquals("assert that just old javas remians", 0, (before.size() - afterKill.size()));
+ // div by two is caused by jav in java process hierarchy
+ Assert.assertEquals("launched JVMs must be exactly 2, was " + (during.size() - before.size()) / 2, 2, (during.size() - before.size()) / 2);
+ }
+
+ @Test
+ public void testSimpletest1lunchNoFork() throws Exception {
+ List<String> before = countJavaInstances();
+ ServerAccess.logOutputReprint("java7: " + before.size());
+ BackgroundDeadlock bd = new BackgroundDeadlock(deadlocktest_1, Arrays.asList(new String[]{"-Xnofork"}));
+ bd.start();
+ Thread.sleep(ServerAccess.PROCESS_TIMEOUT * 2 / 3);
+ List<String> during = countJavaInstances();
+ ServerAccess.logOutputReprint("java8: " + during.size());
+ waitForBackgroundDeadlock(bd);
+ List<String> after = countJavaInstances();
+ ServerAccess.logOutputReprint("java9: " + after.size());
+ Assert.assertNotNull("proces inside background deadlock cant be null. It was.", bd.getPr());
+ assertDeadlockTestLaunched(bd.getPr());
+ killDiff(before, during);
+ List<String> afterKill = countJavaInstances();
+ ServerAccess.logOutputReprint("java99: " + afterKill.size());
+ Assert.assertEquals("assert that just old javas remians", 0, (before.size() - afterKill.size()));
+ // div by two is caused by jav in java process hierarchy
+ Assert.assertEquals("launched JVMs must be exactly 1, was " + (during.size() - before.size()) / 2, 1, (during.size() - before.size()) / 2);
+ }
+
+ /**
+ * by process assasin destroyed processes are hanging random amount of time as zombies.
+ * Kill -9 is handling zombies pretty well.
+ *
+ * This function kills or processes which are in nw but are not in old
+ * (eq.to killing new zombies:) )
+ *
+ * @param old
+ * @param nw
+ * @return
+ * @throws Exception
+ */
+ private static List<String> killDiff(List<String> old, List<String> nw) throws Exception {
+ ensureLinux();
+ List<String> result = new ArrayList<String>();
+ for (String string : nw) {
+ if (old.contains(string)) {
+ continue;
+ }
+ ServerAccess.logOutputReprint("Killing " + string);
+ ServerAccess.PROCESS_LOG = false;
+ try {
+ ServerAccess.ProcessResult pr = ServerAccess.executeProcess(Arrays.asList(new String[]{"kill", "-9", string}));
+ } finally {
+ ServerAccess.PROCESS_LOG = true;
+ }
+ result.add(string);
+ ServerAccess.logOutputReprint("Killed " + string);
+ }
+ return result;
+ }
+
+ private static List<String> countJavaInstances() throws Exception {
+ ensureLinux();
+ List<String> result = new ArrayList<String>();
+ ServerAccess.PROCESS_LOG = false;
+ try {
+ ServerAccess.ProcessResult pr = ServerAccess.executeProcess(Arrays.asList(new String[]{"ps", "-eo", "pid,ppid,stat,fname"}));
+ Matcher m = Pattern.compile("\\s*\\d+\\s+\\d+ .+ java\\s*").matcher(pr.stdout);
+ int i = 0;
+ while (m.find()) {
+ i++;
+ String ss = m.group();
+ //ServerAccess.logOutputReprint(i+": "+ss);
+ result.add(ss.trim().split("\\s+")[0]);
+ }
+ } finally {
+ ServerAccess.PROCESS_LOG = true;
+ }
+ return result;
+
+ }
+
+ public static void main(String[] args) throws Exception {
+ ServerAccess.logOutputReprint("" + countJavaInstances());
+ }
+
+ private void assertDeadlockTestLaunched(ProcessResult pr) {
+ String s = "Deadlock test started";
+ Assert.assertTrue("Deadlock test should print out " + s + ", but did not", pr.stdout.contains(s));
+ String ss = "xception";
+ Assert.assertFalse("Deadlock test should not stderr " + ss + " but did", pr.stderr.contains(ss));
+ //each 3500 seconds deadlock test stdout something
+ //timeout is 20s
+ //so it should write out FIVE sentences, but is mostly just three or four. Last is nearly always consumed by termination
+ for (int i = 1; i <= 3; i++) {
+ String sentence = i + " Deadlock sleeping";
+ Assert.assertTrue(
+ "stdout should contains: " + sentence + ", didn't, so framework have consumed to much during termination",
+ pr.stdout.contains(sentence));
+ }
+ }
+
+ private void waitForBackgroundDeadlock(final BackgroundDeadlock bd) throws InterruptedException {
+ while (!bd.isFinished()) {
+ Thread.sleep(500);
+
+ }
+ }
+
+ private static class BackgroundDeadlock extends Thread {
+
+ private boolean finished = false;
+ private ProcessResult pr = null;
+ String jnlp;
+ List<String> args;
+
+ public BackgroundDeadlock(String jnlp, List<String> args) {
+ this.jnlp = jnlp;
+ this.args = args;
+ }
+
+ @Override
+ public void run() {
+ try {
+ pr = server.executeJavawsHeadless(args, jnlp);
+ } catch (Exception ex) {
+ ServerAccess.logException(ex);
+ } finally {
+ finished = true;
+ }
+
+ }
+
+ public ProcessResult getPr() {
+ return pr;
+ }
+
+ public boolean isFinished() {
+ return finished;
+ }
+ }
+
+ private static void ensureLinux() {
+ String os = System.getProperty("os.name").toLowerCase();
+ if (!(os.contains("linux") || os.contains("unix"))) {
+ throw new IllegalStateException("This test can be procesed only on linux like machines");
+ }
+ }
+}