public NonBlockingIdentityHashMap<Long, TestKey> getMapMultithreaded()
throws InterruptedException, ExecutionException {
final int threadCount = _items.keySet().size();
final NonBlockingIdentityHashMap<Long, TestKey> map =
new NonBlockingIdentityHashMap<Long, TestKey>();
// use a barrier to open the gate for all threads at once to avoid rolling start and no actual
// concurrency
final CyclicBarrier barrier = new CyclicBarrier(threadCount);
final ExecutorService ex = Executors.newFixedThreadPool(threadCount);
final CompletionService<Integer> co = new ExecutorCompletionService<Integer>(ex);
for (Integer type : _items.keySet()) {
// A linked-list of things to insert
List<TestKey> items = _items.get(type);
TestKeyFeederThread feeder = new TestKeyFeederThread(type, items, map, barrier);
co.submit(feeder);
}
// wait for all threads to return
int itemCount = 0;
for (int retCount = 0; retCount < threadCount; retCount++) {
final Future<Integer> result = co.take();
itemCount += result.get();
}
ex.shutdown();
return map;
}
public static void shutdown() {
logger_.info("Shutting down ...");
synchronized (MessagingService.class) {
/* Stop listening on any socket */
for (SelectionKey skey : listenSockets_.values()) {
SelectorManager.getSelectorManager().cancel(skey);
}
listenSockets_.clear();
/* Shutdown the threads in the EventQueue's */
messageDeserializationExecutor_.shutdownNow();
messageSerializerExecutor_.shutdownNow();
messageDeserializerExecutor_.shutdownNow();
streamExecutor_.shutdownNow();
/* shut down the cachetables */
taskCompletionMap_.shutdown();
callbackMap_.shutdown();
/* Interrupt the selector manager thread */
SelectorManager.getSelectorManager().interrupt();
poolTable_.clear();
verbHandlers_.clear();
bShutdown_ = true;
}
logger_.debug("Shutdown invocation complete.");
}
@Override
public Boolean call() throws Exception {
long timeoutMillis = 5000;
try {
getServersFile();
getZkRunning();
while (true) {
while (!restartQueue.isEmpty()) {
LOG.debug("Restart queue size [" + restartQueue.size() + "]");
RestartHandler handler = restartQueue.poll();
Future<ScriptContext> runner = pool.submit(handler);
ScriptContext scriptContext = runner.get(); // blocking call
if (scriptContext.getExitCode() != 0) restartQueue.add(handler);
}
try {
Thread.sleep(timeoutMillis);
} catch (InterruptedException e) {
}
}
} catch (Exception e) {
e.printStackTrace();
LOG.error(e);
pool.shutdown();
throw e;
}
}
/** Run a basic task */
@Test
public void testBasicTask() throws Exception {
Callable<String> task = new BasicTestTask();
ExecutorService executor = createSingleNodeExecutorService("testBasicTask");
Future future = executor.submit(task);
assertEquals(future.get(), BasicTestTask.RESULT);
}
// Concurrent insertion & then iterator test.
public static void testNonBlockingIdentityHashMapIterator() throws InterruptedException {
final int ITEM_COUNT1 = 1000;
final int THREAD_COUNT = 5;
final int PER_CNT = ITEM_COUNT1 / THREAD_COUNT;
final int ITEM_COUNT = PER_CNT * THREAD_COUNT; // fix roundoff for odd thread counts
NonBlockingIdentityHashMap<Long, TestKey> nbhml =
new NonBlockingIdentityHashMap<Long, TestKey>();
// use a barrier to open the gate for all threads at once to avoid rolling
// start and no actual concurrency
final CyclicBarrier barrier = new CyclicBarrier(THREAD_COUNT);
final ExecutorService ex = Executors.newFixedThreadPool(THREAD_COUNT);
final CompletionService<Object> co = new ExecutorCompletionService<Object>(ex);
for (int i = 0; i < THREAD_COUNT; i++) {
co.submit(new NBHMLFeeder(nbhml, PER_CNT, barrier, i * PER_CNT));
}
for (int retCount = 0; retCount < THREAD_COUNT; retCount++) {
co.take();
}
ex.shutdown();
assertEquals("values().size()", ITEM_COUNT, nbhml.values().size());
assertEquals("entrySet().size()", ITEM_COUNT, nbhml.entrySet().size());
int itemCount = 0;
for (TestKey K : nbhml.values()) itemCount++;
assertEquals("values().iterator() count", ITEM_COUNT, itemCount);
}
public static void main(String[] args) throws Exception {
ExecutorService exec = Executors.newCachedThreadPool();
for (int i = 0; i < 5; i++) exec.execute(new Task());
exec.execute(new Task2());
Timer timer = new Timer();
timer.scheduleAtFixedRate(
new TimerTask() {
boolean prod = true;
public void run() {
if (prod) {
System.out.print("\nnotify() ");
Task.blocker.prod();
prod = false;
} else {
System.out.print("\nnotifyAll() ");
Task.blocker.prodAll();
prod = true;
}
}
},
400,
400); // Run every .4 second
TimeUnit.SECONDS.sleep(5); // Run for a while...
timer.cancel();
System.out.println("\nTimer canceled");
TimeUnit.MILLISECONDS.sleep(500);
System.out.print("Task2.blocker.prodAll() ");
Task2.blocker.prodAll();
TimeUnit.MILLISECONDS.sleep(500);
System.out.println("\nShutting down");
exec.shutdownNow(); // Interrupt all tasks
}
/** Execute a task that is executing something else inside. Nested Execution. */
@Test(timeout = 10000)
public void testNestedExecution() throws Exception {
Callable<String> task = new NestedExecutorTask();
ExecutorService executor = createSingleNodeExecutorService("testNestedExecution");
Future future = executor.submit(task);
future.get();
}
public static <T> List<T> executeAndGetResult(
Collection<? extends Callable<T>> tasks, long waitingTimeInMillis) {
ExecutorService executor = Executors.newFixedThreadPool(tasks.size());
List<T> finalResults = new ArrayList<T>(tasks.size());
List<Future<T>> temporaryResults = new ArrayList<Future<T>>(tasks.size());
try {
for (Callable<T> task : tasks) {
Future<T> future = executor.submit(task);
temporaryResults.add(future);
}
executor.awaitTermination(waitingTimeInMillis, TimeUnit.MILLISECONDS);
} catch (InterruptedException e) {
throw new RuntimeException(e);
} finally {
executor.shutdown();
}
finalResults = new ArrayList<T>(temporaryResults.size());
for (Future<T> result : temporaryResults) {
try {
finalResults.add(result.get());
} catch (InterruptedException e) {
throw new RuntimeException(e);
} catch (ExecutionException e) {
throw new RuntimeException(e);
}
}
return finalResults;
}
@Test
public void testInvokeAllTimeoutCancelled() throws Exception {
ExecutorService executor = createSingleNodeExecutorService("testInvokeAll");
assertFalse(executor.isShutdown());
// Only one task
ArrayList<Callable<Boolean>> tasks = new ArrayList<Callable<Boolean>>();
tasks.add(new CancellationAwareTask(0));
List<Future<Boolean>> futures = executor.invokeAll(tasks, 5, TimeUnit.SECONDS);
assertEquals(futures.size(), 1);
assertEquals(futures.get(0).get(), Boolean.TRUE);
// More tasks
tasks.clear();
for (int i = 0; i < COUNT; i++) {
tasks.add(new CancellationAwareTask(i < 2 ? 0 : 20000));
}
futures = executor.invokeAll(tasks, 5, TimeUnit.SECONDS);
assertEquals(futures.size(), COUNT);
for (int i = 0; i < COUNT; i++) {
if (i < 2) {
assertEquals(futures.get(i).get(), Boolean.TRUE);
} else {
boolean excepted = false;
try {
futures.get(i).get();
} catch (CancellationException e) {
excepted = true;
}
assertTrue(excepted);
}
}
}
public static void main(String[] args) {
ExecutorService pool = Executors.newFixedThreadPool(2);
final Vector[] vecs = {
new Vector(), new Vector(),
};
vecs[0].add(vecs[1]);
vecs[1].add(vecs[0]);
for (int i = 0; i < 2; i++) {
final int threadNumber = i;
pool.submit(
new Callable() {
public Object call() throws Exception {
for (int i = 0; i < 1000 * 1000; i++) {
ObjectOutputStream out = new ObjectOutputStream(new NullOutputStream());
out.writeObject(vecs[threadNumber]);
out.close();
}
System.out.println("done");
return null;
}
});
}
}
private int[] computeClusterNumberRange(int min, int max, int hop, Optimizer optimizer)
throws ExecutionException, InterruptedException {
ExecutorService executor;
if (parallelWorkers > 1) {
executor = Executors.newFixedThreadPool(2);
} else {
executor = Executors.newFixedThreadPool(1);
}
ConcurrentMap<Integer, Double> sharedScores = new ConcurrentHashMap<>();
SearchSpaceBoundaryFinder_old upperBoundFinder =
new SearchSpaceUpperBoundaryFinder_old(min, max, hop, optimizer, sharedScores);
Future<Integer> futureUpperBound = executor.submit(upperBoundFinder);
SearchSpaceBoundaryFinder_old lowerBoundFinder =
new SearchSpaceLowerBoundaryFinder_old(min, max, hop, optimizer, sharedScores);
Future<Integer> futureLowerBound = executor.submit(lowerBoundFinder);
executor.shutdown();
int[] r = new int[2];
Integer realMin = futureLowerBound.get();
Integer realMax = futureUpperBound.get();
r[0] = realMin == null ? -1 : realMin;
r[1] = realMax == null ? -1 : realMax;
scores.putAll(lowerBoundFinder.getSplitsAndScores());
// scores.putAll(upperBoundFinder.getSplitsAndScores());
return r;
}
public <T> Collection<T> getParallelResults(List<Node<T>> nodes) throws InterruptedException {
ExecutorService exec = Executors.newCachedThreadPool();
Queue<T> resultQueue = new ConcurrentLinkedQueue<T>();
parallelRecursive(exec, nodes, resultQueue);
exec.shutdown();
exec.awaitTermination(Long.MAX_VALUE, TimeUnit.SECONDS);
return resultQueue;
}
public static void main(String[] args) throws Exception {
ExecutorService exec = Executors.newCachedThreadPool();
for (int i = 0; i < N_ELEMENTS; i++)
for (int j = 0; j < N_GENES; j++) GRID[i][j] = new AtomicInteger(rand.nextInt(1000));
for (int i = 0; i < N_EVOLVERS; i++) exec.execute(new Evolver());
TimeUnit.SECONDS.sleep(5);
exec.shutdownNow();
}
@Test
public void testPostregisteredExecutionCallbackCompletableFuture() throws Exception {
HazelcastInstanceProxy proxy = (HazelcastInstanceProxy) createHazelcastInstance();
Field originalField = HazelcastInstanceProxy.class.getDeclaredField("original");
originalField.setAccessible(true);
HazelcastInstanceImpl hz = (HazelcastInstanceImpl) originalField.get(proxy);
NodeEngine nodeEngine = hz.node.nodeEngine;
ExecutionService es = nodeEngine.getExecutionService();
final CountDownLatch latch1 = new CountDownLatch(1);
final CountDownLatch latch2 = new CountDownLatch(1);
final ExecutorService executorService = Executors.newSingleThreadExecutor();
try {
Future future =
executorService.submit(
new Callable<String>() {
@Override
public String call() {
try {
return "success";
} finally {
latch1.countDown();
}
}
});
final ICompletableFuture completableFuture = es.asCompletableFuture(future);
latch1.await(30, TimeUnit.SECONDS);
final AtomicReference reference = new AtomicReference();
completableFuture.andThen(
new ExecutionCallback() {
@Override
public void onResponse(Object response) {
reference.set(response);
latch2.countDown();
}
@Override
public void onFailure(Throwable t) {
reference.set(t);
latch2.countDown();
}
});
latch2.await(30, TimeUnit.SECONDS);
if (reference.get() instanceof Throwable) {
((Throwable) reference.get()).printStackTrace();
}
assertEquals("success", reference.get());
} finally {
executorService.shutdown();
}
}
public static void main(String[] args) {
Random rand = new Random(47);
ExecutorService exec = Executors.newCachedThreadPool();
DelayQueue<DelayedTask> queue = new DelayQueue<DelayedTask>();
// Fill with tasks that have random delays:
for (int i = 0; i < 20; i++) queue.put(new DelayedTask(rand.nextInt(5000)));
// Set the stopping point
queue.add(new DelayedTask.EndSentinel(5000, exec));
exec.execute(new DelayedTaskConsumer(queue));
}
private void executeConcurrentRandomReadAndWriteOperations()
throws InterruptedException, ExecutionException {
for (int i = 0; i < THREAD_COUNT; i++) {
futures.add(executorService.submit(new Writer()));
}
for (int i = 0; i < THREAD_COUNT; i++) {
futures.add(executorService.submit(new Reader()));
}
for (Future<Void> future : futures) future.get();
}
public static void main(String[] args) throws Exception {
if (args.length > 0) size = new Integer(args[0]);
if (args.length > 1) delay = new Integer(args[1]);
ExecutorService exec = Executors.newCachedThreadPool();
Exchanger<List<Fat>> xc = new Exchanger<List<Fat>>();
List<Fat> producerList = new CopyOnWriteArrayList<Fat>(),
consumerList = new CopyOnWriteArrayList<Fat>();
exec.execute(new ExchangerProducer<Fat>(xc, BasicGenerator.create(Fat.class), producerList));
exec.execute(new ExchangerConsumer<Fat>(xc, consumerList));
TimeUnit.SECONDS.sleep(delay);
exec.shutdownNow();
}
public static void main(String[] args) throws Exception {
ExecutorService exec = Executors.newCachedThreadPool();
Restaurant restaurant = new Restaurant(exec, 5, 2);
exec.execute(restaurant);
if (args.length > 0) // Optional argument
TimeUnit.SECONDS.sleep(new Integer(args[0]));
else {
print("Press ‘Enter’ to quit");
System.in.read();
}
exec.shutdownNow();
}
private synchronized void shutdown() {
if (!exe.isShutdown()) {
freeCUObjectsMemory();
}
exe.shutdown();
try {
System.err.println(
"cuda device " + Id + " freed ? " + exe.awaitTermination(10, TimeUnit.SECONDS));
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public Restaurant(ExecutorService e, int nWaitPersons, int nChefs) {
exec = e;
for (int i = 0; i < nWaitPersons; i++) {
WaitPerson waitPerson = new WaitPerson(this);
waitPersons.add(waitPerson);
exec.execute(waitPerson);
}
for (int i = 0; i < nChefs; i++) {
Chef chef = new Chef(this);
chefs.add(chef);
exec.execute(chef);
}
}
/** Test for the issue 129. Repeatedly runs tasks and check for isDone() status after get(). */
@Test
public void testIsDoneMethod2() throws Exception {
ExecutorService executor = createSingleNodeExecutorService("isDoneMethod2");
for (int i = 0; i < COUNT; i++) {
Callable<String> task1 = new BasicTestTask();
Callable<String> task2 = new BasicTestTask();
Future future1 = executor.submit(task1);
Future future2 = executor.submit(task2);
assertEquals(future2.get(), BasicTestTask.RESULT);
assertTrue(future2.isDone());
assertEquals(future1.get(), BasicTestTask.RESULT);
assertTrue(future1.isDone());
}
}
public static boolean init() {
synchronized (cudaEngines) {
System.err.println("---------Initializing Cuda----------------");
try {
extractAndLoadNativeLibs();
JCudaDriver.setExceptionsEnabled(true);
JCudaDriver.cuInit(0);
compileKernelsPtx();
// Obtain the number of devices
int deviceCountArray[] = {0};
JCudaDriver.cuDeviceGetCount(deviceCountArray);
availableDevicesNb = deviceCountArray[0];
if (availableDevicesNb == 0) return false;
availableDevicesNb = NB_OF_DEVICE_TO_USE; // TODO
initialization = Executors.newCachedThreadPool();
System.out.println("Found " + availableDevicesNb + " GPU devices");
for (int i = 0 /*-NB_OF_DEVICE_TO_USE*/; i < availableDevicesNb; i++) {
final int index = i;
Future<?> initJob =
initialization.submit(
new Runnable() {
public void run() {
System.err.println("Initializing device n°" + index);
cudaEngines.put(index, new CudaEngine(index));
}
});
initJob.get();
initialization.shutdown();
}
} catch (InterruptedException
| ExecutionException
| IOException
| CudaException
| UnsatisfiedLinkError e) {
e.printStackTrace();
System.err.println("---------Cannot initialize Cuda !!! ----------------");
return false;
}
Runtime.getRuntime()
.addShutdownHook(
new Thread() {
@Override
public void run() {
CudaEngine.stop();
}
});
System.out.println("---------Cuda Initialized----------------");
return true;
}
}
/** Shutting down the cluster should act as the ExecutorService shutdown */
@Test(expected = RejectedExecutionException.class)
public void testClusterShutdown() throws Exception {
ExecutorService executor = createSingleNodeExecutorService("testClusterShutdown");
shutdownNodeFactory();
Thread.sleep(2000);
assertNotNull(executor);
assertTrue(executor.isShutdown());
assertTrue(executor.isTerminated());
// New tasks must be rejected
Callable<String> task = new BasicTestTask();
executor.submit(task);
}
@Override
public Board solve(Board in) {
if (useBacktracking) {
return solve_mdfs(in);
} else {
if (nThreads == 1) {
return solve_ldfs(in);
} else {
ExecutorService pool = Executors.newFixedThreadPool(nThreads);
Board ret = solve_pndfs(in, pool);
pool.shutdown();
return ret;
}
}
}
public static void main(String[] args) throws Exception {
ExecutorService exec = Executors.newCachedThreadPool();
// If line is too long, customers will leave:
CustomerLine customers = new CustomerLine(MAX_LINE_SIZE);
exec.execute(new CustomerGenerator(customers));
// Manager will add and remove tellers as necessary:
exec.execute(new TellerManager(exec, customers, ADJUSTMENT_PERIOD));
if (args.length > 0) // Optional argument
TimeUnit.SECONDS.sleep(new Integer(args[0]));
else {
System.out.println("Press ‘Enter’ to quit");
System.in.read();
}
exec.shutdownNow();
}
public static void execute(Collection<? extends Runnable> tasks, long waitingTimeInMillis) {
ExecutorService executor = Executors.newFixedThreadPool(tasks.size());
for (Runnable task : tasks) {
executor.execute(task);
}
try {
executor.awaitTermination(waitingTimeInMillis, TimeUnit.MILLISECONDS);
} catch (InterruptedException e) {
throw new RuntimeException(e);
} finally {
executor.shutdown();
}
}
/** {@inheritDoc} */
@Override
public void loadCache(GridBiInClosure<K, V> c, @Nullable Object... args) throws GridException {
ExecutorService exec =
new ThreadPoolExecutor(
threadsCnt,
threadsCnt,
0L,
MILLISECONDS,
new ArrayBlockingQueue<Runnable>(batchQueueSize),
new BlockingRejectedExecutionHandler());
Iterator<I> iter = inputIterator(args);
Collection<I> buf = new ArrayList<>(batchSize);
try {
while (iter.hasNext()) {
if (Thread.currentThread().isInterrupted()) {
U.warn(log, "Working thread was interrupted while loading data.");
break;
}
buf.add(iter.next());
if (buf.size() == batchSize) {
exec.submit(new Worker(c, buf, args));
buf = new ArrayList<>(batchSize);
}
}
if (!buf.isEmpty()) exec.submit(new Worker(c, buf, args));
} catch (RejectedExecutionException ignored) {
// Because of custom RejectedExecutionHandler.
assert false : "RejectedExecutionException was thrown while it shouldn't.";
} finally {
exec.shutdown();
try {
exec.awaitTermination(Long.MAX_VALUE, MILLISECONDS);
} catch (InterruptedException ignored) {
U.warn(log, "Working thread was interrupted while waiting for put operations to complete.");
Thread.currentThread().interrupt();
}
}
}
/**
* Somewhat multi-threaded depth-first search. Performs a DFS of the subtrees from the current
* node in parallel.
*
* @param s The tile sequence
* @param b The board to search
* @param pool The thread pool in which to submit jobs to.
* @return The board with the highest evaluation or null if no board can continue.
*/
private Board solve_pdfs(Board b, ExecutorService pool) {
List<Future<Board>> rets = new ArrayList<>(BOARD_WIDTH);
Board best = null;
int best_score = -1;
for (Direction d : directions) {
Board n = new Board(b);
if (n.move(tileSequence, d)) {
rets.add(pool.submit(new ParallelDFS(n)));
}
}
for (Future<Board> ret : rets) {
try {
Board c = ret.get();
if (c != null) {
int score = evaluate(c);
if (score > best_score) {
best = c;
best_score = score;
}
}
} catch (InterruptedException | ExecutionException e) {
System.err.println("Error: " + e.getMessage());
}
}
return best;
}
/** {@inheritDoc} */
@Override
protected void maybeStartStream() throws IOException {
// connector
final StreamConnector connector = getStreamConnector();
if (connector == null) return;
synchronized (this) {
if (started) return;
threadPool.execute(
new Runnable() {
@Override
public void run() {
try {
Sctp.init();
runOnDtlsTransport(connector);
} catch (IOException e) {
logger.error(e, e);
} finally {
try {
Sctp.finish();
} catch (IOException e) {
logger.error("Failed to shutdown SCTP stack", e);
}
}
}
});
started = true;
}
}
/**
* Executes the specified runnable on the worker thread of the view. Execution is performed
* sequentially in the same sequence as the runnables have been passed to this method.
*/
@Override
public void execute(Runnable worker) {
if (executor == null) {
executor = Executors.newSingleThreadExecutor();
}
executor.execute(worker);
}