J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2007 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * @test |
| 26 | * @bug 6450200 6450205 6450207 6450211 |
| 27 | * @summary Test proper handling of tasks that terminate abruptly |
| 28 | * @run main/othervm -XX:-UseVMInterruptibleIO ThrowingTasks |
| 29 | * @author Martin Buchholz |
| 30 | */ |
| 31 | |
| 32 | import java.security.*; |
| 33 | import java.util.*; |
| 34 | import java.util.concurrent.*; |
| 35 | import java.util.concurrent.atomic.*; |
| 36 | |
| 37 | public class ThrowingTasks { |
| 38 | final static Random rnd = new Random(); |
| 39 | |
| 40 | @SuppressWarnings("serial") |
| 41 | static class UncaughtExceptions |
| 42 | extends ConcurrentHashMap<Class<?>, Integer> { |
| 43 | |
| 44 | void inc(Class<?> key) { |
| 45 | for (;;) { |
| 46 | Integer i = get(key); |
| 47 | if (i == null) { |
| 48 | if (putIfAbsent(key, 1) == null) |
| 49 | return; |
| 50 | } else { |
| 51 | if (replace(key, i, i + 1)) |
| 52 | return; |
| 53 | } |
| 54 | } |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | @SuppressWarnings("serial") |
| 59 | static class UncaughtExceptionsTable |
| 60 | extends Hashtable<Class<?>, Integer> { |
| 61 | |
| 62 | synchronized void inc(Class<?> key) { |
| 63 | Integer i = get(key); |
| 64 | put(key, (i == null) ? 1 : i + 1); |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | final static UncaughtExceptions uncaughtExceptions |
| 69 | = new UncaughtExceptions(); |
| 70 | final static UncaughtExceptionsTable uncaughtExceptionsTable |
| 71 | = new UncaughtExceptionsTable(); |
| 72 | final static AtomicLong totalUncaughtExceptions |
| 73 | = new AtomicLong(0); |
| 74 | final static CountDownLatch uncaughtExceptionsLatch |
| 75 | = new CountDownLatch(24); |
| 76 | |
| 77 | final static Thread.UncaughtExceptionHandler handler |
| 78 | = new Thread.UncaughtExceptionHandler() { |
| 79 | public void uncaughtException(Thread t, Throwable e) { |
| 80 | check(! Thread.currentThread().isInterrupted()); |
| 81 | totalUncaughtExceptions.getAndIncrement(); |
| 82 | uncaughtExceptions.inc(e.getClass()); |
| 83 | uncaughtExceptionsTable.inc(e.getClass()); |
| 84 | uncaughtExceptionsLatch.countDown(); |
| 85 | }}; |
| 86 | |
| 87 | final static ThreadGroup tg = new ThreadGroup("Flaky"); |
| 88 | |
| 89 | final static ThreadFactory tf = new ThreadFactory() { |
| 90 | public Thread newThread(Runnable r) { |
| 91 | Thread t = new Thread(tg, r); |
| 92 | t.setUncaughtExceptionHandler(handler); |
| 93 | return t; |
| 94 | }}; |
| 95 | |
| 96 | final static RuntimeException rte = new RuntimeException(); |
| 97 | final static Error error = new Error(); |
| 98 | final static Throwable weird = new Throwable(); |
| 99 | final static Exception checkedException = new Exception(); |
| 100 | |
| 101 | static class Thrower implements Runnable { |
| 102 | Throwable t; |
| 103 | Thrower(Throwable t) { this.t = t; } |
| 104 | @SuppressWarnings("deprecation") |
| 105 | public void run() { if (t != null) Thread.currentThread().stop(t); } |
| 106 | } |
| 107 | |
| 108 | final static Thrower noThrower = new Thrower(null); |
| 109 | final static Thrower rteThrower = new Thrower(rte); |
| 110 | final static Thrower errorThrower = new Thrower(error); |
| 111 | final static Thrower weirdThrower = new Thrower(weird); |
| 112 | final static Thrower checkedThrower = new Thrower(checkedException); |
| 113 | |
| 114 | final static List<Thrower> throwers = Arrays.asList( |
| 115 | noThrower, rteThrower, errorThrower, weirdThrower, checkedThrower); |
| 116 | |
| 117 | static class Flaky implements Runnable { |
| 118 | final Runnable beforeExecute; |
| 119 | final Runnable execute; |
| 120 | Flaky(Runnable beforeExecute, |
| 121 | Runnable execute) { |
| 122 | this.beforeExecute = beforeExecute; |
| 123 | this.execute = execute; |
| 124 | } |
| 125 | public void run() { execute.run(); } |
| 126 | } |
| 127 | |
| 128 | static final List<Flaky> flakes = new ArrayList<Flaky>(); |
| 129 | static { |
| 130 | for (Thrower x : throwers) |
| 131 | for (Thrower y : throwers) |
| 132 | flakes.add(new Flaky(x, y)); |
| 133 | Collections.shuffle(flakes); |
| 134 | } |
| 135 | |
| 136 | static final CountDownLatch allStarted = new CountDownLatch(flakes.size()); |
| 137 | static final CountDownLatch allContinue = new CountDownLatch(1); |
| 138 | |
| 139 | static class PermissiveSecurityManger extends SecurityManager { |
| 140 | public void checkPermission(Permission p) { /* bien sur, Monsieur */ } |
| 141 | } |
| 142 | |
| 143 | static void checkTerminated(ThreadPoolExecutor tpe) { |
| 144 | try { |
| 145 | check(tpe.getQueue().isEmpty()); |
| 146 | check(tpe.isShutdown()); |
| 147 | check(tpe.isTerminated()); |
| 148 | check(! tpe.isTerminating()); |
| 149 | equal(tpe.getActiveCount(), 0); |
| 150 | equal(tpe.getPoolSize(), 0); |
| 151 | equal(tpe.getTaskCount(), tpe.getCompletedTaskCount()); |
| 152 | check(tpe.awaitTermination(0, TimeUnit.SECONDS)); |
| 153 | } catch (Throwable t) { unexpected(t); } |
| 154 | } |
| 155 | |
| 156 | static class CheckingExecutor extends ThreadPoolExecutor { |
| 157 | CheckingExecutor() { |
| 158 | super(10, 10, |
| 159 | 1L, TimeUnit.HOURS, |
| 160 | new LinkedBlockingQueue<Runnable>(), |
| 161 | tf); |
| 162 | } |
| 163 | @Override protected void beforeExecute(Thread t, Runnable r) { |
| 164 | allStarted.countDown(); |
| 165 | if (allStarted.getCount() < getCorePoolSize()) |
| 166 | try { allContinue.await(); } |
| 167 | catch (InterruptedException x) { unexpected(x); } |
| 168 | beforeExecuteCount.getAndIncrement(); |
| 169 | check(! isTerminated()); |
| 170 | ((Flaky)r).beforeExecute.run(); |
| 171 | } |
| 172 | @Override protected void afterExecute(Runnable r, Throwable t) { |
| 173 | //System.out.println(tg.activeCount()); |
| 174 | afterExecuteCount.getAndIncrement(); |
| 175 | check(((Thrower)((Flaky)r).execute).t == t); |
| 176 | check(! isTerminated()); |
| 177 | } |
| 178 | @Override protected void terminated() { |
| 179 | try { |
| 180 | terminatedCount.getAndIncrement(); |
| 181 | if (rnd.nextBoolean()) { |
| 182 | check(isShutdown()); |
| 183 | check(isTerminating()); |
| 184 | check(! isTerminated()); |
| 185 | check(! awaitTermination(0L, TimeUnit.MINUTES)); |
| 186 | } |
| 187 | } catch (Throwable t) { unexpected(t); } |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | static final AtomicInteger beforeExecuteCount = new AtomicInteger(0); |
| 192 | static final AtomicInteger afterExecuteCount = new AtomicInteger(0); |
| 193 | static final AtomicInteger terminatedCount = new AtomicInteger(0); |
| 194 | |
| 195 | private static void realMain(String[] args) throws Throwable { |
| 196 | if (rnd.nextBoolean()) |
| 197 | System.setSecurityManager(new PermissiveSecurityManger()); |
| 198 | |
| 199 | CheckingExecutor tpe = new CheckingExecutor(); |
| 200 | |
| 201 | for (Runnable task : flakes) |
| 202 | tpe.execute(task); |
| 203 | |
| 204 | if (rnd.nextBoolean()) { |
| 205 | allStarted.await(); |
| 206 | equal(tpe.getTaskCount(), |
| 207 | (long) flakes.size()); |
| 208 | equal(tpe.getCompletedTaskCount(), |
| 209 | (long) flakes.size() - tpe.getCorePoolSize()); |
| 210 | } |
| 211 | allContinue.countDown(); |
| 212 | |
| 213 | //System.out.printf("thread count = %d%n", tg.activeCount()); |
| 214 | uncaughtExceptionsLatch.await(); |
| 215 | |
| 216 | while (tg.activeCount() != tpe.getCorePoolSize() || |
| 217 | tg.activeCount() != tpe.getCorePoolSize()) |
| 218 | Thread.sleep(10); |
| 219 | equal(tg.activeCount(), tpe.getCorePoolSize()); |
| 220 | |
| 221 | tpe.shutdown(); |
| 222 | |
| 223 | check(tpe.awaitTermination(10L, TimeUnit.MINUTES)); |
| 224 | checkTerminated(tpe); |
| 225 | |
| 226 | //while (tg.activeCount() > 0) Thread.sleep(10); |
| 227 | //System.out.println(uncaughtExceptions); |
| 228 | List<Map<Class<?>, Integer>> maps |
| 229 | = new ArrayList<Map<Class<?>, Integer>>(); |
| 230 | maps.add(uncaughtExceptions); |
| 231 | maps.add(uncaughtExceptionsTable); |
| 232 | for (Map<Class<?>, Integer> map : maps) { |
| 233 | equal(map.get(Exception.class), throwers.size()); |
| 234 | equal(map.get(weird.getClass()), throwers.size()); |
| 235 | equal(map.get(Error.class), throwers.size() + 1 + 2); |
| 236 | equal(map.get(RuntimeException.class), throwers.size() + 1); |
| 237 | equal(map.size(), 4); |
| 238 | } |
| 239 | equal(totalUncaughtExceptions.get(), 4L*throwers.size() + 4L); |
| 240 | |
| 241 | equal(beforeExecuteCount.get(), flakes.size()); |
| 242 | equal(afterExecuteCount.get(), throwers.size()); |
| 243 | equal(tpe.getCompletedTaskCount(), (long) flakes.size()); |
| 244 | equal(terminatedCount.get(), 1); |
| 245 | |
| 246 | // check for termination operation idempotence |
| 247 | tpe.shutdown(); |
| 248 | tpe.shutdownNow(); |
| 249 | check(tpe.awaitTermination(10L, TimeUnit.MINUTES)); |
| 250 | checkTerminated(tpe); |
| 251 | equal(terminatedCount.get(), 1); |
| 252 | } |
| 253 | |
| 254 | //--------------------- Infrastructure --------------------------- |
| 255 | static volatile int passed = 0, failed = 0; |
| 256 | static void pass() {passed++;} |
| 257 | static void fail() {failed++; Thread.dumpStack();} |
| 258 | static void fail(String msg) {System.out.println(msg); fail();} |
| 259 | static void unexpected(Throwable t) {failed++; t.printStackTrace();} |
| 260 | static void check(boolean cond) {if (cond) pass(); else fail();} |
| 261 | static void equal(Object x, Object y) { |
| 262 | if (x == null ? y == null : x.equals(y)) pass(); |
| 263 | else fail(x + " not equal to " + y);} |
| 264 | public static void main(String[] args) throws Throwable { |
| 265 | try {realMain(args);} catch (Throwable t) {unexpected(t);} |
| 266 | System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed); |
| 267 | if (failed > 0) throw new AssertionError("Some tests failed");} |
| 268 | } |