/*
* Copyright 2016 higherfrequencytrading.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.openhft.chronicle.engine.map;
import junit.framework.AssertionFailedError;
import net.openhft.chronicle.core.Jvm;
import net.openhft.chronicle.engine.ThreadMonitoringTest;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import java.io.*;
import java.lang.Thread.State;
import java.security.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.AtomicReference;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static java.util.concurrent.TimeUnit.NANOSECONDS;
/**
* Base class for JSR166 Junit TCK tests. Defines some constants,
* utility methods and classes, as well as a simple framework for
* helping to make sure that assertions Assert.failing in generated threads
* cause the associated test that generated them to itself Assert.fail (which
* JUnit does not otherwise arrange). The rules for creating such
* tests are:
* <p>
* <ol>
* <p>
* <li> All assertions in code running in generated threads must use
* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
* #threadAssertEquals}, or {@link #threadAssertNull}, (not
* {@code Assert.fail}, {@code Assert.assertTrue}, etc.) It is OK (but not
* particularly recommended) for other code to use these forms too.
* Only the most typically used JUnit assertion methods are defined
* this way, but enough to live with.</li>
* <p>
* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
* to invoke {@code super.setUp} and {@code super.tearDown} within
* them. These methods are used to clear and check for thread
* assertion Assert.failures.</li>
* <p>
* <li>All delays and timeouts must use one of the constants {@code
* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
* discriminable from zero time, and always allows enough time for the
* small amounts of computation (creating a thread, calling a few
* methods, etc) needed to reach a timeout point. Similarly, a SMALL
* is always discriminable as larger than SHORT and smaller than
* MEDIUM. And so on. These constants are set to conservative values,
* but even so, if there is ever any doubt, they can all be increased
* in one spot to rerun tests on slower platforms.</li>
* <p>
* <li> All threads generated must be joined inside each test case
* method (or {@code Assert.fail} to do so) before returning from the
* method. The {@code joinPool} method can be used to do this when
* using Executors.</li>
* <p>
* </ol>
* <p>
* <p><b>Other notes</b>
* <ul>
* <p>
* <li> Usually, there is one testcase method per JSR166 method
* covering "normal" operation, and then as many exception-testing
* methods as there are exceptions the method can throw. Sometimes
* there are multiple tests per JSR166 method when the different
* "normal" behaviors differ significantly. And sometimes testcases
* cover multiple methods when they cannot be tested in
* isolation.</li>
* <p>
* <li> The documentation style for testcases is to provide as javadoc
* a simple sentence or two describing the property that the testcase
* method purports to test. The javadocs do not say anything about how
* the property is tested. To find out, read the code.</li>
* <p>
* <li> These tests are "conformance tests", and do not attempt to
* test throughput, latency, scalability or other performance factors
* (see the separate "jtreg" tests for a set intended to check these
* for the most central aspects of functionality.) So, most tests use
* the smallest sensible numbers of threads, collection sizes, etc
* needed to check basic conformance.</li>
* <p>
* <li>The test classes currently do not declare inclusion in
* any particular package to simplify things for people integrating
* them in TCK test suites.</li>
* <p>
* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
* runs all JSR166 unit tests.</li>
* <p>
* </ul>
*/
public class JSR166TestCase extends ThreadMonitoringTest {
/**
* The number of elements to place in collections, arrays, etc.
*/
public static final int SIZE = 20;
public static final Integer seven = 7;
public static final Integer eight = 8;
public static final Integer nine = 9;
public static final Integer m1 = -1;
public static final Integer m2 = -2;
public static final Integer m3 = -3;
public static final Integer m4 = -4;
public static final Integer m5 = -5;
public static final Integer m6 = -6;
protected static final boolean expensiveTests = false;
static final Integer zero = 0;
static final Integer one = 1;
static final Integer two = 2;
static final Integer three = 3;
static final Integer four = 4;
static final Integer five = 5;
static final Integer six = 6;
static final Integer m10 = -10;
static final Integer notPresent = 42;
private static final String TEST_STRING = "a test string";
private static long SHORT_DELAY_MS;
private static long SMALL_DELAY_MS;
private static long MEDIUM_DELAY_MS;
private static long LONG_DELAY_MS;
/**
* The first exception encountered if any threadAssertXXX method Assert.fails.
*/
@Nullable
private final AtomicReference<Throwable> threadFailure
= new AtomicReference<>(null);
/**
* Delays, via Thread.sleep, for the given millisecond delay, but
* if the sleep is shorter than specified, may re-sleep or yield
* until time elapses.
*/
private static void delay(long millis) throws InterruptedException {
long startTime = System.nanoTime();
long ns = millis * 1000 * 1000;
for (; ; ) {
if (millis > 0L)
Jvm.pause(millis);
else // too short to sleep
Thread.yield();
long d = ns - (System.nanoTime() - startTime);
if (d > 0L)
millis = d / (1000 * 1000);
else
break;
}
}
/**
* Returns a policy containing all the permissions we ever need.
*/
@NotNull
public static Policy permissivePolicy() {
return new AdjustablePolicy
// Permissions j.u.c. needs directly
(new RuntimePermission("modifyThread"),
new RuntimePermission("getClassLoader"),
new RuntimePermission("setContextClassLoader"),
// Permissions needed to change permissions!
new SecurityPermission("getPolicy"),
new SecurityPermission("setPolicy"),
new RuntimePermission("setSecurityManager"),
// Permissions needed by the junit test harness
new RuntimePermission("accessDeclaredMembers"),
new PropertyPermission("*", "read"),
new FilePermission("<<ALL FILES>>", "read"));
}
@NotNull
public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
return new TrackedRunnable() {
private volatile boolean done = false;
public boolean isDone() {
return done;
}
public void run() {
try {
delay(timeoutMillis);
done = true;
} catch (InterruptedException ok) {
Thread.currentThread().interrupt();
}
}
};
}
/**
* Returns the shortest timed delay. This could
* be reimplemented to use for example a Property.
*/
private long getShortDelay() {
return 50;
}
/**
* Sets delays as multiples of SHORT_DELAY.
*/
private void setDelays() {
SHORT_DELAY_MS = getShortDelay();
SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
LONG_DELAY_MS = SHORT_DELAY_MS * 200;
}
/**
* Returns a timeout in milliseconds to be used in tests that
* verify that operations block or time out.
*/
private long timeoutMillis() {
return SHORT_DELAY_MS / 4;
}
/**
* Returns a new Date instance representing a time delayMillis
* milliseconds in the future.
*/
@NotNull
Date delayedDate(long delayMillis) {
return new Date(System.currentTimeMillis() + delayMillis);
}
/**
* Records an exception so that it can be rethrown later in the test
* harness thread, triggering a test case Assert.failure. Only the first
* Assert.failure is recorded; subsequent calls to this method from within
* the same test have no effect.
*/
private void threadRecordFailure(Throwable t) {
threadFailure.compareAndSet(null, t);
}
@Before
public void setUp() {
setDelays();
}
// Some convenient Integer constants
/**
* Extra checks that get done for all test cases.
* <p>
* Triggers test case Assert.failure if any thread assertions have Assert.failed,
* by rethrowing, in the test harness thread, any exception recorded
* earlier by threadRecordFailure.
* <p>
* Triggers test case Assert.failure if interrupt status is set in the main thread.
*/
@After
public void tearDown() throws InterruptedException {
Throwable t = threadFailure.getAndSet(null);
if (t != null)
throw Jvm.rethrow(t);
if (Thread.interrupted())
throw new AssertionFailedError("interrupt status set in main thread");
checkForkJoinPoolThreadLeaks();
System.gc();
}
/**
* Find missing try { ... } finally { joinPool(e); }
*/
private void checkForkJoinPoolThreadLeaks() throws InterruptedException {
@NotNull Thread[] survivors = new Thread[5];
int count = Thread.enumerate(survivors);
for (int i = 0; i < count; i++) {
Thread thread = survivors[i];
String name = thread.getName();
if (name.startsWith("ForkJoinPool-")) {
// give thread some time to terminate
thread.join(LONG_DELAY_MS);
if (!thread.isAlive()) continue;
thread.stop();
throw new AssertionFailedError
(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
toString(), name));
}
}
}
/**
* Just like Assert.fail(reason), but additionally recording (using
* threadRecordFailure) any AssertionFailedError thrown, so that
* the current testcase will Assert.fail.
*/
private void threadFail(String reason) {
try {
Assert.fail(reason);
} catch (AssertionFailedError t) {
threadRecordFailure(t);
Assert.fail(reason);
}
}
/**
* Just like Assert.assertTrue(b), but additionally recording (using
* threadRecordFailure) any AssertionFailedError thrown, so that
* the current testcase will Assert.fail.
*/
private void threadAssertTrue(boolean b) {
try {
Assert.assertTrue(b);
} catch (AssertionFailedError t) {
threadRecordFailure(t);
throw t;
}
}
/**
* Just like assertFalse(b), but additionally recording (using
* threadRecordFailure) any AssertionFailedError thrown, so that
* the current testcase will Assert.fail.
*/
private void threadAssertFalse(boolean b) {
try {
Assert.assertFalse(b);
} catch (AssertionFailedError t) {
threadRecordFailure(t);
throw t;
}
}
/**
* Just like assertNull(x), but additionally recording (using
* threadRecordFailure) any AssertionFailedError thrown, so that
* the current testcase will Assert.fail.
*/
public void threadAssertNull(Object x) {
try {
Assert.assertNull(x);
} catch (AssertionFailedError t) {
threadRecordFailure(t);
throw t;
}
}
/**
* Just like assertEquals(x, y), but additionally recording (using
* threadRecordFailure) any AssertionFailedError thrown, so that
* the current testcase will Assert.fail.
*/
public void threadAssertEquals(long x, long y) {
try {
Assert.assertEquals(x, y);
} catch (AssertionFailedError t) {
threadRecordFailure(t);
throw t;
}
}
/**
* Just like assertEquals(x, y), but additionally recording (using
* threadRecordFailure) any AssertionFailedError thrown, so that
* the current testcase will Assert.fail.
*/
public void threadAssertEquals(Object x, Object y) {
try {
Assert.assertEquals(x, y);
} catch (AssertionFailedError t) {
threadRecordFailure(t);
throw t;
} catch (Throwable t) {
threadUnexpectedException(t);
}
}
/**
* Just like assertSame(x, y), but additionally recording (using
* threadRecordFailure) any AssertionFailedError thrown, so that
* the current testcase will Assert.fail.
*/
public void threadAssertSame(Object x, Object y) {
try {
Assert.assertSame(x, y);
} catch (AssertionFailedError t) {
threadRecordFailure(t);
throw t;
}
}
/**
* Calls threadFail with message "should throw exception".
*/
public void threadShouldThrow() {
threadFail("should throw exception");
}
/**
* Calls threadFail with message "should throw" + exceptionName.
*/
private void threadShouldThrow(String exceptionName) {
threadFail("should throw " + exceptionName);
}
/**
* Records the given exception using {@link #threadRecordFailure},
* then rethrows the exception, wrapping it in an
* AssertionFailedError if necessary.
*/
private void threadUnexpectedException(@NotNull Throwable t) {
threadRecordFailure(t);
t.printStackTrace();
if (t instanceof RuntimeException)
throw (RuntimeException) t;
else if (t instanceof Error)
throw (Error) t;
else {
@NotNull AssertionFailedError afe =
new AssertionFailedError("unexpected exception: " + t);
afe.initCause(t);
throw afe;
}
}
/**
* Waits out termination of a thread pool or Assert.fails doing so.
*/
protected void joinPool(@NotNull ExecutorService exec) {
try {
exec.shutdown();
Assert.assertTrue("ExecutorService did not terminate in a timely manner",
exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
} catch (SecurityException ok) {
// Allowed in case test doesn't have privs
} catch (InterruptedException ie) {
Assert.fail("Unexpected InterruptedException");
}
}
/**
* Checks that thread does not terminate within the default
* millisecond delay of {@code timeoutMillis()}.
*/
protected void assertThreadStaysAlive(@NotNull Thread thread) {
assertThreadStaysAlive(thread, timeoutMillis());
}
/**
* Checks that thread does not terminate within the given millisecond delay.
*/
private void assertThreadStaysAlive(@NotNull Thread thread, long millis) {
try {
// No need to optimize the Assert.failing case via Thread.join.
delay(millis);
Assert.assertTrue(thread.isAlive());
} catch (InterruptedException ie) {
Assert.fail("Unexpected InterruptedException");
}
}
/**
* Checks that the threads do not terminate within the default
* millisecond delay of {@code timeoutMillis()}.
*/
void assertThreadsStayAlive(Thread... threads) {
assertThreadsStayAlive(timeoutMillis(), threads);
}
/**
* Checks that the threads do not terminate within the given millisecond delay.
*/
private void assertThreadsStayAlive(long millis, @NotNull Thread... threads) {
try {
// No need to optimize the Assert.failing case via Thread.join.
delay(millis);
for (@NotNull Thread thread : threads)
Assert.assertTrue(thread.isAlive());
} catch (InterruptedException ie) {
Assert.fail("Unexpected InterruptedException");
}
}
/**
* Checks that future.get times out, with the default timeout of
* {@code timeoutMillis()}.
*/
void assertFutureTimesOut(@NotNull Future future) {
assertFutureTimesOut(future, timeoutMillis());
}
/**
* Checks that future.get times out, with the given millisecond timeout.
*/
private void assertFutureTimesOut(@NotNull Future future, long timeoutMillis) {
long startTime = System.nanoTime();
try {
future.get(timeoutMillis, MILLISECONDS);
shouldThrow("timeout");
} catch (TimeoutException success) {
} catch (Exception e) {
threadUnexpectedException(e);
} finally {
future.cancel(true);
}
Assert.assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
}
/**
* Fails with message "should throw " + exceptionName.
*/
private void shouldThrow(String exceptionName) {
Assert.fail("Should throw " + exceptionName);
}
/**
* android-changed
* Android does not use a SecurityManager. This will simply execute
* the runnable ignoring permissions.
*/
private void runWithPermissions(@NotNull Runnable r, Permission... permissions) {
r.run();
}
/**
* android-changed
* Android does not use a SecurityManager. This will simply execute
* the runnable ignoring permissions.
*/
public void runWithSecurityManagerWithPermissions(@NotNull Runnable r,
Permission... permissions) {
r.run();
}
/**
* Runs a runnable without any permissions.
*/
public void runWithoutPermissions(@NotNull Runnable r) {
runWithPermissions(r);
}
/**
* Sleeps until the given time has elapsed.
* Throws AssertionFailedError if interrupted.
*/
void sleep(long millis) {
try {
delay(millis);
} catch (InterruptedException ie) {
@NotNull AssertionFailedError afe =
new AssertionFailedError("Unexpected InterruptedException");
afe.initCause(ie);
throw afe;
}
}
/**
* Spin-waits up to the specified number of milliseconds for the given
* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
*/
private void waitForThreadToEnterWaitState(@NotNull Thread thread, long timeoutMillis) {
long startTime = System.nanoTime();
for (; ; ) {
State s = thread.getState();
if (s == State.BLOCKED ||
s == State.WAITING ||
s == State.TIMED_WAITING)
return;
else if (s == State.TERMINATED)
Assert.fail("Unexpected thread termination");
else if (millisElapsedSince(startTime) > timeoutMillis) {
threadAssertTrue(thread.isAlive());
return;
}
Thread.yield();
}
}
/**
* Waits up to LONG_DELAY_MS for the given thread to enter a wait
* state: BLOCKED, WAITING, or TIMED_WAITING.
*/
void waitForThreadToEnterWaitState(@NotNull Thread thread) {
waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
}
/**
* Returns the number of milliseconds since time given by
* startNanoTime, which must have been previously returned from a
* call to.
*/
private long millisElapsedSince(long startNanoTime) {
return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
}
/**
* Returns a new started daemon Thread running the given runnable.
*/
@NotNull
protected Thread newStartedThread(Runnable runnable) {
@NotNull Thread t = new Thread(runnable);
t.setDaemon(true);
t.start();
return t;
}
/**
* Waits for the specified time (in milliseconds) for the thread
* to terminate (using {@link Thread#join(long)}), else interrupts
* the thread (in the hope that it may terminate later) and Assert.fails.
*/
private void awaitTermination(@NotNull Thread t, long timeoutMillis) {
try {
t.join(timeoutMillis);
} catch (InterruptedException ie) {
threadUnexpectedException(ie);
} finally {
if (t.getState() != State.TERMINATED) {
t.interrupt();
Assert.fail("Test timed out");
}
}
}
// Some convenient Runnable classes
/**
* Waits for LONG_DELAY_MS milliseconds for the thread to
* terminate (using {@link Thread#join(long)}), else interrupts
* the thread (in the hope that it may terminate later) and Assert.fails.
*/
protected void awaitTermination(@NotNull Thread t) {
awaitTermination(t, LONG_DELAY_MS);
}
@NotNull
public Callable<String> latchAwaitingStringTask(@NotNull final CountDownLatch latch) {
return new CheckedCallable<String>() {
@NotNull
protected String realCall() {
try {
latch.await();
} catch (InterruptedException quittingTime) {
Thread.currentThread().interrupt();
}
return TEST_STRING;
}
};
}
@NotNull
public Runnable awaiter(@NotNull final CountDownLatch latch) {
return new CheckedRunnable() {
public void realRun() {
await(latch);
}
};
}
private void await(@NotNull CountDownLatch latch) {
try {
Assert.assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
} catch (Throwable t) {
threadUnexpectedException(t);
}
}
public void await(@NotNull Semaphore semaphore) {
try {
Assert.assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
} catch (Throwable t) {
threadUnexpectedException(t);
}
}
@NotNull
public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
return new CheckedRunnable() {
protected void realRun() {
try {
delay(timeoutMillis);
} catch (InterruptedException ok) {
Thread.currentThread().interrupt();
}
}
};
}
void assertSerialEquals(Object x, Object y) {
Assert.assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
}
void assertNotSerialEquals(Object x, Object y) {
Assert.assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
}
private byte[] serialBytes(Object o) {
try {
@NotNull ByteArrayOutputStream bos = new ByteArrayOutputStream();
@NotNull ObjectOutputStream oos = new ObjectOutputStream(bos);
oos.writeObject(o);
oos.flush();
oos.close();
return bos.toByteArray();
} catch (Throwable t) {
threadUnexpectedException(t);
return new byte[0];
}
}
@Nullable
@SuppressWarnings("unchecked")
protected <T> T serialClone(@NotNull T o) {
try {
@NotNull ObjectInputStream ois = new ObjectInputStream
(new ByteArrayInputStream(serialBytes(o)));
@NotNull T clone = (T) ois.readObject();
Assert.assertSame(o.getClass(), clone.getClass());
return clone;
} catch (Throwable t) {
threadUnexpectedException(t);
return null;
}
}
public void assertThrows(@NotNull Class<? extends Throwable> expectedExceptionClass,
@NotNull Runnable... throwingActions) {
for (@NotNull Runnable throwingAction : throwingActions) {
boolean threw = false;
try {
throwingAction.run();
} catch (Throwable t) {
threw = true;
if (!expectedExceptionClass.isInstance(t)) {
@NotNull AssertionFailedError afe =
new AssertionFailedError
("Expected " + expectedExceptionClass.getName() +
", got " + t.getClass().getName());
afe.initCause(t);
threadUnexpectedException(afe);
}
}
if (!threw)
shouldThrow(expectedExceptionClass.getName());
}
}
public interface TrackedRunnable extends Runnable {
boolean isDone();
}
/**
* A security policy where new permissions can be dynamically added
* or all cleared.
*/
public static class AdjustablePolicy extends Policy {
@NotNull
Permissions perms = new Permissions();
AdjustablePolicy(@NotNull Permission... permissions) {
for (@NotNull Permission permission : permissions)
perms.add(permission);
}
void addPermission(@NotNull Permission perm) {
perms.add(perm);
}
void clearPermissions() {
perms = new Permissions();
}
@NotNull
public PermissionCollection getPermissions(CodeSource cs) {
return perms;
}
@NotNull
public PermissionCollection getPermissions(ProtectionDomain pd) {
return perms;
}
public boolean implies(ProtectionDomain pd, Permission p) {
return perms.implies(p);
}
public void refresh() {
}
@NotNull
public String toString() {
@NotNull List<Permission> ps = new ArrayList<>();
for (@NotNull Enumeration<Permission> e = perms.elements(); e.hasMoreElements(); )
ps.add(e.nextElement());
return "AdjustablePolicy with permissions " + ps;
}
}
// /**
// * Spin-waits up to LONG_DELAY_MS until flag becomes true.
// */
// public void await(AtomicBoolean flag) {
// await(flag, LONG_DELAY_MS);
// }
// /**
// * Spin-waits up to the specified timeout until flag becomes true.
// */
// public void await(AtomicBoolean flag, long timeoutMillis) {
// long startTime = System.nanoTime();
// while (!flag.get()) {
// if (millisElapsedSince(startTime) > timeoutMillis)
// throw new AssertionFailedError("timed out");
// Thread.yield();
// }
// }
private static class NoOpRunnable implements Runnable {
public void run() {
}
}
private static class NoOpCallable implements Callable {
public Object call() {
return Boolean.TRUE;
}
}
private static class StringTask implements Callable<String> {
@NotNull
public String call() {
return TEST_STRING;
}
}
private static class NPETask implements Callable<String> {
@NotNull
public String call() {
throw new NullPointerException();
}
}
private static class CallableOne implements Callable<Integer> {
@NotNull
public Integer call() {
return one;
}
}
/**
* For use as ThreadFactory in constructors
*/
private static class SimpleThreadFactory implements ThreadFactory {
@NotNull
public Thread newThread(Runnable r) {
return new Thread(r);
}
}
public static class TrackedShortRunnable implements Runnable {
public volatile boolean done = false;
public void run() {
try {
delay(SHORT_DELAY_MS);
done = true;
} catch (InterruptedException ok) {
}
}
}
public static class TrackedSmallRunnable implements Runnable {
public volatile boolean done = false;
public void run() {
try {
delay(SMALL_DELAY_MS);
done = true;
} catch (InterruptedException ok) {
}
}
}
public static class TrackedMediumRunnable implements Runnable {
public volatile boolean done = false;
public void run() {
try {
delay(MEDIUM_DELAY_MS);
done = true;
} catch (InterruptedException ok) {
}
}
}
public static class TrackedLongRunnable implements Runnable {
public volatile boolean done = false;
public void run() {
try {
delay(LONG_DELAY_MS);
done = true;
} catch (InterruptedException ok) {
}
}
}
public static class TrackedNoOpRunnable implements Runnable {
public volatile boolean done = false;
public void run() {
done = true;
}
}
public static class TrackedCallable implements Callable {
public volatile boolean done = false;
public Object call() {
try {
delay(SMALL_DELAY_MS);
done = true;
} catch (InterruptedException ok) {
}
return Boolean.TRUE;
}
}
/**
* For use as RejectedExecutionHandler in constructors
*/
private static class NoOpREHandler implements RejectedExecutionHandler {
public void rejectedExecution(Runnable r,
ThreadPoolExecutor executor) {
}
}
public abstract class CheckedRunnable implements Runnable {
protected abstract void realRun() throws Throwable;
public final void run() {
try {
realRun();
} catch (Throwable t) {
threadUnexpectedException(t);
}
}
}
public abstract class RunnableShouldThrow implements Runnable {
final Class<?> exceptionClass;
<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
this.exceptionClass = exceptionClass;
}
protected abstract void realRun() throws Throwable;
public final void run() {
try {
realRun();
threadShouldThrow(exceptionClass.getSimpleName());
} catch (Throwable t) {
if (!exceptionClass.isInstance(t))
threadUnexpectedException(t);
}
}
}
public abstract class ThreadShouldThrow extends Thread {
final Class<?> exceptionClass;
<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
this.exceptionClass = exceptionClass;
}
protected abstract void realRun() throws Throwable;
public final void run() {
try {
realRun();
threadShouldThrow(exceptionClass.getSimpleName());
} catch (Throwable t) {
if (!exceptionClass.isInstance(t))
threadUnexpectedException(t);
}
}
}
public abstract class CheckedInterruptedRunnable implements Runnable {
protected abstract void realRun() throws Throwable;
public final void run() {
try {
realRun();
threadShouldThrow("InterruptedException");
} catch (InterruptedException success) {
threadAssertFalse(Thread.interrupted());
} catch (Throwable t) {
threadUnexpectedException(t);
}
}
}
public abstract class CheckedCallable<T> implements Callable<T> {
protected abstract T realCall() throws Throwable;
public final T call() {
try {
return realCall();
} catch (Throwable t) {
threadUnexpectedException(t);
return null;
}
}
}
public abstract class CheckedInterruptedCallable<T>
implements Callable<T> {
@NotNull
protected abstract T realCall() throws Throwable;
public final T call() {
try {
@NotNull T result = realCall();
threadShouldThrow("InterruptedException");
return result;
} catch (InterruptedException success) {
threadAssertFalse(Thread.interrupted());
} catch (Throwable t) {
threadUnexpectedException(t);
}
return null;
}
}
protected class ShortRunnable extends CheckedRunnable {
protected void realRun() throws Throwable {
delay(SHORT_DELAY_MS);
}
}
protected class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
protected void realRun() throws InterruptedException {
delay(SHORT_DELAY_MS);
}
}
protected class SmallRunnable extends CheckedRunnable {
protected void realRun() throws Throwable {
delay(SMALL_DELAY_MS);
}
}
protected class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
protected void realRun() {
try {
delay(SMALL_DELAY_MS);
} catch (InterruptedException ok) {
Thread.currentThread().interrupt();
}
}
}
protected class SmallCallable extends CheckedCallable {
protected Object realCall() throws InterruptedException {
delay(SMALL_DELAY_MS);
return Boolean.TRUE;
}
}
protected class MediumRunnable extends CheckedRunnable {
protected void realRun() throws Throwable {
delay(MEDIUM_DELAY_MS);
}
}
protected class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
protected void realRun() throws InterruptedException {
delay(MEDIUM_DELAY_MS);
}
}
protected class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
protected void realRun() {
try {
delay(MEDIUM_DELAY_MS);
} catch (InterruptedException ok) {
Thread.currentThread().interrupt();
}
}
}
protected class LongPossiblyInterruptedRunnable extends CheckedRunnable {
protected void realRun() {
try {
delay(LONG_DELAY_MS);
} catch (InterruptedException ok) {
Thread.currentThread().interrupt();
}
}
}
/**
* Analog of CheckedRunnable for RecursiveAction
*/
public abstract class CheckedRecursiveAction extends RecursiveAction {
protected abstract void realCompute() throws Throwable;
@Override
protected final void compute() {
try {
realCompute();
} catch (Throwable t) {
threadUnexpectedException(t);
}
}
}
/**
* Analog of CheckedCallable for RecursiveTask
*/
public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
@NotNull
protected abstract T realCompute() throws Throwable;
@Override
protected final T compute() {
try {
return realCompute();
} catch (Throwable t) {
threadUnexpectedException(t);
return null;
}
}
}
/**
* A CyclicBarrier that uses timed await and Assert.fails with
* AssertionFailedErrors instead of throwing checked exceptions.
*/
private class CheckedBarrier extends CyclicBarrier {
public CheckedBarrier(int parties) {
super(parties);
}
public int await() {
try {
return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
} catch (TimeoutException e) {
throw new AssertionFailedError("timed out");
} catch (Exception e) {
@NotNull AssertionFailedError afe =
new AssertionFailedError("Unexpected exception: " + e);
afe.initCause(e);
throw afe;
}
}
}
}