@SuppressWarnings("deprecation")
@PreDestroy
private void cleanUp() throws Exception {
// TODO Maybe Spring is better at handling these?
log.info("\nClean up " + this.getClass().getSimpleName() + " (4) : ");
// Shutdown the proxy if needed
if (proxy != null) {
proxy.shutdown();
}
log.info("1 ");
// Kill the message pump from within
messageQueue.clear();
putMessage(TournamentEvent.QUIT);
messageFeeder.join();
log.info("2 ");
// Kill the state machine from within
eventQueue.clear();
putEvent(TournamentEvent.QUIT);
stateRunner.join();
log.info("3 ");
for (Thread t : Thread.getAllStackTraces().keySet()) {
if (t.getName().contains("Timer-") || t.getName().contains("ActiveMQ")) {
synchronized (t) {
t.stop();
}
}
}
log.info("4\n");
}
static void verifyThreadTerminated(Thread thread, long millis) throws InterruptedException {
thread.join(millis);
if (thread.isAlive()) {
LOG.error("Thread " + thread.getName() + " : " + Arrays.toString(thread.getStackTrace()));
Assert.assertFalse("thread " + thread.getName() + " still alive after join", true);
}
}
/**
* @param args
* @throws InterruptedException
*/
public static void main(String[] args) throws InterruptedException {
Thread t1 =
new Thread() {
@Override
public void run() {
long i = 0l;
try {
while (this.isInterrupted() == false) {
System.out.println(Thread.currentThread().getName() + " sleep 10 ");
TimeUnit.SECONDS.sleep(10);
}
} catch (InterruptedException e) // 会抛出InterruptException因为Sleep会阻塞
{
e.printStackTrace();
System.out.println(Thread.currentThread().getName() + ":" + e.getMessage());
}
}
};
Thread t2 =
new Thread() {
@Override
public void run() {
long i = 0l;
while (this.isInterrupted() == false) {
try {
Thread.currentThread().sleep(1);
i++;
while (true) {
i++;
}
} catch (InterruptedException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
}
}
}
};
t1.start();
t2.start();
System.out.println(
t1.getName() + " before interupt:" + t1.isInterrupted() + " is alive=" + t1.isAlive());
System.out.println(
t2.getName() + " before interupt:" + t2.isInterrupted() + " is alive=" + t2.isAlive());
TimeUnit.SECONDS.sleep(1);
t1.interrupt();
t2.interrupt();
TimeUnit.SECONDS.sleep(1);
System.out.println(
t1.getName() + " after interupt:" + t1.isInterrupted() + " is alive=" + t1.isAlive());
System.out.println(
t2.getName() + " after interupt:" + t2.isInterrupted() + " is alive=" + t2.isAlive());
}
private String stringFromTracesAndNames(
Map<Thread, StackTraceElement[]> traces, Map<Thread, String> names) {
String trace = null;
if (traces != null) {
String capturedThreadName = null;
if (names == null) {
capturedThreadName = Thread.currentThread().getName();
} else {
capturedThreadName = names.get(Thread.currentThread());
}
StringBuilder sb = new StringBuilder();
sb.append("\nRequest Thread Name: ").append(capturedThreadName).append("\n\n");
for (Iterator iterator = traces.keySet().iterator(); iterator.hasNext(); ) {
Thread t = (Thread) iterator.next();
StackTraceElement stack[] = traces.get(t);
String name = t.getName() != null ? t.getName() : "No name";
String groupName = t.getThreadGroup() != null ? t.getThreadGroup().getName() : "No group";
if (stack != null
&& stack.length > 2
&& !name.equals("main")
&& !name.equals("ERXStopWatchTimer")
&& !groupName.equals("system")) {
StackTraceElement func = stack[0];
if (func != null
&& func.getClassName() != null
&& !func.getClassName().equals("java.net.PlainSocketImpl")) {
if (names != null) {
String customThreadName = names.get(t);
if (customThreadName != null) {
sb.append(customThreadName).append(":\n");
}
}
sb.append(t).append(":\n");
for (int i = 0; i < stack.length; i++) {
StackTraceElement stackTraceElement = stack[i];
sb.append("\tat ").append(stackTraceElement).append('\n');
}
}
}
}
sb.insert(0, '\n');
trace = sb.toString();
// trace =
// trace.replaceAll("at\\s+(com.webobjects|java|er|sun)\\..*?\\n",
// "...\n");
// trace = trace.replaceAll("(\t\\.\\.\\.\n+)+", "\t...\n");
} else {
trace = "";
}
return trace;
}
public static void main(String[] args) {
System.out.println("main method");
Thread th = Thread.currentThread();
System.out.println("Original thread name: " + th.getName());
System.out.println("Original thread priority: " + th.getPriority());
th.setName("main-thread");
th.setPriority(7);
System.out.println("Changed thread name: " + th.getName());
System.out.println("Changed thread priority: " + th.getPriority());
}
protected void waitForSentNewsletter() throws Exception {
Thread[] threads = new Thread[40];
Thread.enumerate(threads);
for (int i = 0; i < threads.length; i++) {
Thread currentThread = threads[i];
if (currentThread != null
&& (currentThread
.getName()
.startsWith(JpnewsletterSystemConstants.NEWSLETTER_SENDER_THREAD_NAME)
|| currentThread
.getName()
.startsWith(JpnewsletterSystemConstants.EMAIL_SENDER_NAME_THREAD_PREFIX))) {
currentThread.join();
}
}
}
@Test
public void testThreadDetails() {
final AtomicReference<Thread> threadRef = new AtomicReference<Thread>();
SingleThreadEventExecutor executor =
new SingleThreadEventExecutor(null, Executors.newCachedThreadPool(), false) {
@Override
protected void run() {
threadRef.set(Thread.currentThread());
while (!confirmShutdown()) {
Runnable task = takeTask();
if (task != null) {
task.run();
}
}
}
};
ThreadProperties threadProperties = executor.threadProperties();
Assert.assertSame(threadProperties, executor.threadProperties());
Thread thread = threadRef.get();
Assert.assertEquals(thread.getId(), threadProperties.id());
Assert.assertEquals(thread.getName(), threadProperties.name());
Assert.assertEquals(thread.getPriority(), threadProperties.priority());
Assert.assertEquals(thread.getState(), threadProperties.state());
Assert.assertEquals(thread.isAlive(), threadProperties.isAlive());
Assert.assertEquals(thread.isDaemon(), threadProperties.isDaemon());
Assert.assertEquals(thread.isInterrupted(), threadProperties.isInterrupted());
Assert.assertTrue(threadProperties.stackTrace().length > 0);
executor.shutdownGracefully();
}
@Override
protected void afterExecute(Runnable r, Throwable t) {
super.afterExecute(r, t);
Thread thread = (Thread) r;
runningThreadNames.remove(thread.getName());
logger.debug("{} ===================> Finished.", thread.getName());
}
@Override
public void uncaughtException(Thread t, Throwable thrw) {
// log warning for the exception
StringWriter s = new StringWriter();
s.write("Uncaught exception in thread " + t.getName() + ":\n");
PrintWriter w = new PrintWriter(s);
thrw.printStackTrace(w);
log.warn(s.toString());
try {
s.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// resume work
Thread th = new Thread(this, "Rxthread " + this.id);
th.setDaemon(true);
th.setUncaughtExceptionHandler(this);
synchronized (currentTrainingRun.threads) {
log.warn("Resuming thread " + t.getName() + " with " + th.getName());
currentTrainingRun.threads.add(th); // don't want to join before thread has been started
th.start();
}
}
public static void main(String[] args) {
Thread t1 = new Thread(new Car("AAA", 10L, true));
Thread t2 = new Thread(new Car("BBB", 20L, false));
t1.setName("AAA");
t2.setName("BBB");
t1.start();
t2.start();
String winner = null;
try {
while (true) {
Thread.sleep(100);
if (!t1.isAlive() && t2.isAlive()) {
winner = t1.getName();
}
if (!t2.isAlive() && t1.isAlive()) {
winner = t2.getName();
}
if (!(t1.isAlive() || t2.isAlive())) {
System.out.println("Winner is " + winner + "!");
break;
}
}
} catch (InterruptedException e) {
}
}
@Override
public void uncaughtException(Thread t, Throwable e) {
/* In case of fatal errors we shut down. The wrapper script
* will restart the domain. Notice that there is no guarantee
* that the fatal error will not reoccur during shutdown and
* in that case the shutdown may fail. We may want to consider
* refining the shutdown logic such that in recovers if the
* fatal error reoccurs.
*/
if (e instanceof VirtualMachineError) {
_oomSafetyBuffer = null;
kill();
_log.error(
AlarmMarkerFactory.getMarker(
PredefinedAlarm.FATAL_JVM_ERROR, getCellDomainName(), getCellName()),
"Restarting due to fatal JVM error",
e);
return;
}
Throwable root = Throwables.getRootCause(e);
if (root instanceof FileNotFoundException) {
if (root.getMessage().contains("Too many open files")) {
_log.error(
AlarmMarkerFactory.getMarker(
PredefinedAlarm.OUT_OF_FILE_DESCRIPTORS, getCellDomainName(), getCellName()),
"Uncaught exception in thread " + t.getName(),
e);
return;
}
}
_log.error("Uncaught exception in thread " + t.getName(), e);
}
public void execute(Thread command) {
if (runningThreadNames.contains(command.getName())) {
logger.warn("{} ===================> Running.", command.getName());
return;
}
logger.debug("{} ===================> Started.", command.getName());
super.execute(command);
}
public void run() {
for (int i = 0; i < 10; i++) {
System.out.println(i + " " + thread.getName());
try {
thread.sleep((long) (Math.random() * 1000));
} catch (InterruptedException e) {
}
}
System.out.println("DONE! " + thread.getName());
}
/**
* Traverse the ThreadGroups threads and its child ThreadGroups printing information for each
* thread found. If 'threadName' is non-null, only print information for the thread that matches
* the name.
*
* @param grp the ThreadGroup to traverse
* @param out the destination for output
* @param threadName if non-null, only display this thread.
*/
private void showThreads(ThreadGroup grp, PrintWriter out, String threadName) {
if (threadName == null) {
out.println(GROUP + grp.getName());
}
final int max = grp.activeCount() * 2;
final Thread[] ts = new Thread[max];
grp.enumerate(ts);
for (int i = 0; i < max; i++) {
final Thread t = ts[i];
if (t != null) {
if ((threadName == null) || threadName.equals(t.getName())) {
VmThread vmThread =
AccessController.doPrivileged(
new PrivilegedAction<VmThread>() {
public VmThread run() {
return ThreadHelper.getVmThread(t);
}
});
out.println(
SLASH_T
+ t.getId()
+ SEPARATOR
+ t.getName()
+ SEPARATOR
+ t.getPriority()
+ SEPARATOR
+ vmThread.getThreadStateName());
if (threadName != null) {
final Object[] trace = VmThread.getStackTrace(vmThread);
final int traceLen = trace.length;
out.println(SLASH_T + SLASH_T + TRACE);
for (int k = 0; k < traceLen; k++) {
out.println(SLASH_T + SLASH_T + trace[k]);
}
return;
}
}
}
}
final int gmax = grp.activeGroupCount() * 2;
final ThreadGroup[] tgs = new ThreadGroup[gmax];
grp.enumerate(tgs);
for (int i = 0; i < gmax; i++) {
final ThreadGroup tg = tgs[i];
if (tg != null) {
showThreads(tg, out, threadName);
}
}
}
public static void main(String[] args) throws IOException, InterruptedException {
Thread t = new Thread(new ContentGatherer());
System.out.println("starting :" + t.getName());
t.start();
Thread.sleep(3000);
Thread t2 = new Thread(new ContentGatherer());
System.out.println("starting :" + t2.getName());
t2.start();
Thread t3 = new Thread(new ContentWriter());
System.out.println("starting :" + t3.getName());
t3.start();
Thread t4 = new Thread(new ContentWriter());
System.out.println("starting :" + t4.getName());
t4.start();
}
public void insert(Thread thread) throws InterruptedException {
lock.lockInterruptibly(); // 注意，如果需要正确中断等待锁的线程，必须将获取锁放在外面，然后将InterruptedException抛出
try {
System.out.println(thread.getName() + "得到了锁");
long startTime = System.currentTimeMillis();
for (; ; ) {
if (System.currentTimeMillis() - startTime >= Integer.MAX_VALUE) break;
// 插入数据
}
} finally {
System.out.println(Thread.currentThread().getName() + "执行finally");
lock.unlock();
System.out.println(thread.getName() + "释放了锁");
}
}
public synchronized String format(LogRecord record) {
StringBuffer sb = new StringBuffer();
date.setTime(record.getMillis() + timeDiff);
sb.append(dFormat.format(date));
if (isShowingThreads) {
Thread currentThread = Thread.currentThread();
if (currentThread != lastThread) {
lastThread = currentThread;
lastThreadName = currentThread.getName();
}
sb.append(" [").append(lastThreadName).append(']');
}
sb.append(' ')
.append(record.getLevel())
.append(' ')
.append(getAliasFor(record.getLoggerName()))
.append('|')
.append(record.getMessage())
.append(EOL);
if (record.getThrown() != null) {
try {
StringWriter out = new StringWriter();
PrintWriter pout = new PrintWriter(out);
record.getThrown().printStackTrace(pout);
pout.close();
sb.append(out.toString());
} catch (Exception e) {
// Ignore any errors while extracting stack trace
}
}
return sb.toString();
}
private void showDefaultInfo(ThreadGroup grp) {
TreeSet<Thread> threadSet =
new TreeSet<Thread>(
new Comparator<Thread>() {
@Override
public int compare(Thread t1, Thread t2) {
return Long.valueOf(t1.getId()).compareTo(t2.getId());
}
});
findThreads(grp, threadSet);
PrintWriter out = getOutput().getPrintWriter();
for (final Thread thread : threadSet) {
VmThread vmThread =
AccessController.doPrivileged(
new PrivilegedAction<VmThread>() {
public VmThread run() {
return ThreadHelper.getVmThread(thread);
}
});
out.println(
" "
+ thread.getId()
+ SEPARATOR
+ thread.getName()
+ SEPARATOR
+ thread.getPriority()
+ SEPARATOR
+ vmThread.getThreadStateName());
}
}
/** Return a thread. */
@Override
public Thread newThread(Runnable r) {
if (shutdown) return null;
Runnable wrapper =
new Runnable() {
/** Keep track of non-daemon threads so shutdown can wait for their termination. */
@Override
public void run() {
threads.fromNewToRunning(Thread.currentThread());
r.run();
/* If the task has thrown an exception, the code below is
* not getting executed. The uncaughtException this.handler
* removes the thread from the tracker list and notifies
* the completer.
*/
threads.removeRunning(Thread.currentThread());
if (!hasActiveNonDaemonThreads()) completer.accept(ThreadFactoryTracker.this, null);
}
};
Thread t = factory.newThread(wrapper);
t.setName(t.getName() + "-" + threadName);
t.setUncaughtExceptionHandler(handler);
threads.addNew(t);
return t;
}
/**
* {@inheritDoc}
*
* @throws Exception
*/
@Override
@After
public void tearDown() throws Exception {
if (manager1 != null) {
manager1.shutdown();
}
if (manager2 != null) {
manager2.shutdown();
}
if (manager3 != null) {
manager3.shutdown();
}
if (manager4 != null) {
manager4.shutdown();
}
if (manager5 != null) {
manager5.shutdown();
}
if (manager6 != null) {
manager6.shutdown();
}
Thread.sleep(2000);
List threads = enumerateThreads();
for (int i = 0; i < threads.size(); i++) {
Thread thread = (Thread) threads.get(i);
if (thread.getName().equals("Replication Thread")) {
fail("There should not be any replication threads running after shutdown");
}
}
}
public void consumir(Thread thr) throws InterruptedException {
vacio.acquire();
mutex.acquire();
buffer[salida] = 0;
System.out.println("Hebraconsumidora: " + thr.getName() + " consume en posición: " + salida);
Productorconsumidor.mostrar.setText(
Productorconsumidor.mostrar.getText() + "Productor consume " + "\n");
salida = (salida + 1) % buffer.length;
contador = contador - 1;
System.out.println("Consumidor consume ");
for (int i = 0; i < buffer.length; i++) {
System.out.print("[" + buffer[i] + "]");
}
for (int i = 0; i < buffer.length; i++) {
Productorconsumidor.mostrar.setText(
Productorconsumidor.mostrar.getText() + "[" + buffer[i] + "]");
}
Productorconsumidor.mostrar.setText(Productorconsumidor.mostrar.getText() + "\n");
System.out.print("\n");
mutex.release();
lleno.release();
}
@Override
public void run() {
while (true) {
log("Running check");
long pre = TimeService.nanoTime();
Map<Thread, StackTraceElement[]> stacks = Thread.getAllStackTraces();
long post = TimeService.nanoTime();
log("Thread.getAllStackTraces() took " + (post - pre) + " nanoseconds");
for (Thread t : stacks.keySet()) {
String name = t.getName();
if (!name.equals(WATCHDOG) && (mask == null || name.contains(mask))) {
StackTraceElement[] stack = stacks.get(t);
if (stack.length < shortStack) {
continue;
}
boolean stuck = isStuck(t, stack);
if (!onlyStuck || stuck) {
traceStack(t, stack, stuck);
}
}
}
lastStacks = stacks;
try {
Thread.sleep(period);
} catch (InterruptedException e) {
log.error("Thread has been interrupted", e);
Thread.currentThread().interrupt();
}
}
}
public static void main(String[] args) {
MyLock locker = new MyLock();
Thread[] threads = new Thread[5];
for (int i = 0; i < 5; i++) {
threads[i] = new Thread(new MyTask(locker));
threads[i].start();
}
for (int i = 0; i < 15; i++) {
System.out.println("===========Logging the Lock info==========");
System.out.println("Lock Owner: " + locker.getOwnerName());
System.out.println("Lock has the queued threads: " + locker.hasQueuedThreads());
if (locker.hasQueuedThreads()) {
System.out.println(locker.getQueueLength());
Collection<Thread> ct = locker.getThreads();
for (Thread t : ct) {
System.out.println(t.getName());
}
}
System.out.println("Fairness: " + locker.isFair());
System.out.println("Lock is locked: " + locker.isLocked());
try {
TimeUnit.SECONDS.sleep(1);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
public void contextDestroyed(ServletContextEvent sce) {
// This manually deregisters JDBC driver, which prevents Tomcat 7 from complaining about memory
// leaks wrto this class
Enumeration<Driver> drivers = DriverManager.getDrivers();
while (drivers.hasMoreElements()) {
Driver driver = drivers.nextElement();
try {
DriverManager.deregisterDriver(driver);
LOG.info(String.format("deregistering jdbc driver: %s", driver));
} catch (SQLException e) {
LOG.warn(String.format("Error deregistering driver %s", driver), e);
}
}
// Try to kill the TOMCAT abandoned connection clean up thread
// to prevent it from holding the whole context in memory causing
// a leak
Set<Thread> threadSet = Thread.getAllStackTraces().keySet();
Thread[] threadArray = threadSet.toArray(new Thread[threadSet.size()]);
for (Thread t : threadArray) {
if (t.getName().contains("Abandoned connection cleanup thread")) {
synchronized (t) {
t.stop(); // don't complain, it works
}
}
}
}
@Override
public void run() {
Thread current = Thread.currentThread();
String name = current.getName();
current.setName(name + "-acceptor-" + _acceptor + "-" + AbstractConnector.this);
synchronized (AbstractConnector.this) {
_acceptors[_acceptor] = current;
}
try {
while (isAccepting()) {
try {
accept(_acceptor);
} catch (Throwable e) {
if (isAccepting()) LOG.warn(e);
else LOG.debug(e);
}
}
} finally {
current.setName(name);
synchronized (AbstractConnector.this) {
_acceptors[_acceptor] = null;
}
_stopping.countDown();
}
}
@Override
public void getInfo(PrintWriter pw) {
pw.append(" CellDomainName = ").println(getCellDomainName());
pw.format(
" I/O rcv=%d;asw=%d;frw=%d;rpy=%d;exc=%d\n",
_packetsReceived, _packetsAnswered, _packetsForwarded, _packetsReplied, _exceptionCounter);
long fm = _runtime.freeMemory();
long tm = _runtime.totalMemory();
pw.format(" Memory : tot=%d;free=%d;used=%d\n", tm, fm, tm - fm);
pw.println(" Cells (Threads)");
for (String name : _nucleus.getCellNames()) {
pw.append(" ").append(name).append("(");
Thread[] threads = _nucleus.getThreads(name);
if (threads != null) {
boolean first = true;
for (Thread thread : threads) {
pw.print(thread.getName());
if (first) {
first = false;
} else {
pw.print(",");
}
}
}
pw.println(")");
}
}
/**
* Based on the default thread factory
*
* @param name the name prefix of the new thread
* @return the factory to use when creating new threads
*/
public static final ThreadFactory getThreadFactory(String name) {
return r -> {
Thread t = Executors.defaultThreadFactory().newThread(r);
t.setName(name + "-" + t.getName()); // $NON-NLS-1$
return t;
};
}
/**
* Names a thread according to base_name, cluster name and local address. If includeClusterName
* and includeLocalAddress are null, but cluster_name is set, then we assume we have a shared
* transport and name the thread shared=clusterName. In the latter case, clusterName points to the
* singleton_name of TP.
*
* @param base_name
* @param thread
* @param addr
* @param cluster_name
*/
public void renameThread(String base_name, Thread thread, String addr, String cluster_name) {
if (thread == null) return;
StringBuilder sb = new StringBuilder(base_name != null ? base_name : thread.getName());
if (use_numbering) {
short id;
synchronized (this) {
id = ++counter;
}
sb.append("-" + id);
}
if (cluster_name == null) cluster_name = clusterName;
if (addr == null) addr = this.address;
if (!includeClusterName && !includeLocalAddress && cluster_name != null) {
sb.append(",shared=").append(cluster_name);
thread.setName(sb.toString());
return;
}
if (includeClusterName) sb.append(',').append(cluster_name);
if (includeLocalAddress) sb.append(',').append(addr);
if (use_numbering || includeClusterName || includeLocalAddress) thread.setName(sb.toString());
}
public Map<ConcreteResource, CharSequence> getActiveLocks() {
final Map<ConcreteResource, CharSequence> active =
new HashMap<ConcreteResource, CharSequence>();
for (final ConcreteResource f : lock.keySet()) {
final StringBuilder owner = new StringBuilder();
final WeakReference<Thread> ref = lock.get(f);
if (ref == null) {
owner.append("UNKNOWN OWNER; REF IS NULL.");
}
final Thread t = ref.get();
if (t == null) {
owner.append("UNKNOWN OWNER; REF IS EMPTY.");
} else {
owner.append(t.getName());
if (!t.isAlive()) {
owner.append(" (DEAD)");
}
}
active.put(f, owner);
}
return active;
}
public void producir(Thread thr) throws InterruptedException {
lleno.acquire();
mutex.acquire();
buffer[entrada] = 1;
System.out.println("Hebraproductora: " + thr.getName() + " produce en posición: " + entrada);
Productorconsumidor.mostrar.setText(
Productorconsumidor.mostrar.getText() + "Productor produce " + "\n");
entrada = (entrada + 1) % buffer.length;
contador = contador + 1;
System.out.println("Productor produce ");
for (int i = 0; i < buffer.length; i++) {
System.out.print("[" + buffer[i] + "]");
}
for (int i = 0; i < buffer.length; i++) {
Productorconsumidor.mostrar.setText(
Productorconsumidor.mostrar.getText() + "[" + buffer[i] + "]");
}
Productorconsumidor.mostrar.setText(Productorconsumidor.mostrar.getText() + "\n");
System.out.print("\n");
mutex.release();
vacio.release();
}