public RunnableScheduledFuture<?> poll(long timeout, TimeUnit unit)
throws InterruptedException {
long nanos = unit.toNanos(timeout);
final ReentrantLock lock = this.lock;
lock.lockInterruptibly();
try {
for (; ; ) {
RunnableScheduledFuture<?> first = queue[0];
if (first == null) {
if (nanos <= 0) return null;
else nanos = available.awaitNanos(nanos);
} else {
long delay = first.getDelay(NANOSECONDS);
if (delay <= 0) return finishPoll(first);
if (nanos <= 0) return null;
if (nanos < delay || leader != null) nanos = available.awaitNanos(nanos);
else {
Thread thisThread = Thread.currentThread();
leader = thisThread;
try {
long timeLeft = available.awaitNanos(delay);
nanos -= delay - timeLeft;
} finally {
if (leader == thisThread) leader = null;
}
}
}
}
} finally {
if (leader == null && queue[0] != null) available.signal();
lock.unlock();
}
}
/**
* Retrieves and removes the head of this queue, waiting if necessary until an element with an
* expired delay is available on this queue, or the specified wait time expires.
*
* @return the head of this queue, or <tt>null</tt> if the specified waiting time elapses before
* an element with an expired delay becomes available
* @throws InterruptedException {@inheritDoc}
*/
public E poll(long timeout, TimeUnit unit) throws InterruptedException {
long nanos = unit.toNanos(timeout);
final ReentrantLock lock = this.lock;
lock.lockInterruptibly();
try {
for (; ; ) {
E first = q.peek();
if (first == null) {
if (nanos <= 0) return null;
else nanos = available.awaitNanos(nanos);
} else {
long delay = first.getDelay(TimeUnit.NANOSECONDS);
if (delay > 0) {
if (nanos <= 0) return null;
if (delay > nanos) delay = nanos;
long timeLeft = available.awaitNanos(delay);
nanos -= delay - timeLeft;
} else {
E x = q.poll();
assert x != null;
if (q.size() != 0) available.signalAll();
return x;
}
}
}
} finally {
lock.unlock();
}
}
public Session take() throws InterruptedException {
final ReentrantLock lock = this.lock;
lock.lockInterruptibly();
try {
while (active) {
Session first = queue.peek();
if (first == null) {
available.await();
} else {
long delay = getDelay(first, TimeUnit.NANOSECONDS);
if (delay > 0) {
available.awaitNanos(delay);
} else {
Session x = queue.poll();
assert x != null;
if (queue.size() != 0) {
available.signalAll(); // wake up other takers
}
return x;
}
}
}
throw new InterruptedException("Session queue is stopping");
} finally {
lock.unlock();
}
}
/**
* Retrieves and removes the head of this queue, waiting if necessary until an element with an
* expired delay is available on this queue.
*
* @return the head of this queue
* @throws InterruptedException {@inheritDoc}
*/
public E take() throws InterruptedException {
final ReentrantLock lock = this.lock;
lock.lockInterruptibly();
try {
for (; ; ) {
E first = q.peek();
if (first == null) available.await();
else {
long delay = first.getDelay(TimeUnit.NANOSECONDS);
if (delay <= 0) return q.poll();
else if (leader != null) available.await();
else {
Thread thisThread = Thread.currentThread();
leader = thisThread;
try {
available.awaitNanos(delay);
} finally {
if (leader == thisThread) leader = null;
}
}
}
}
} finally {
if (leader == null && q.peek() != null) available.signal();
lock.unlock();
}
}
public Events<Event> get(Position start, int batchSize, long timeout, TimeUnit unit)
throws InterruptedException, CanalStoreException {
long nanos = unit.toNanos(timeout);
final ReentrantLock lock = this.lock;
lock.lockInterruptibly();
try {
for (; ; ) {
if (checkUnGetSlotAt((LogPosition) start, batchSize)) {
return doGet(start, batchSize);
}
if (nanos <= 0) {
// 如果时间到了，有多少取多少
return doGet(start, batchSize);
}
try {
nanos = notEmpty.awaitNanos(nanos);
} catch (InterruptedException ie) {
notEmpty.signal(); // propagate to non-interrupted thread
throw ie;
}
}
} finally {
lock.unlock();
}
}
public boolean put(List<Event> data, long timeout, TimeUnit unit)
throws InterruptedException, CanalStoreException {
if (data == null || data.isEmpty()) {
return true;
}
long nanos = unit.toNanos(timeout);
final ReentrantLock lock = this.lock;
lock.lockInterruptibly();
try {
for (; ; ) {
if (checkFreeSlotAt(putSequence.get() + data.size())) {
doPut(data);
return true;
}
if (nanos <= 0) {
return false;
}
try {
nanos = notFull.awaitNanos(nanos);
} catch (InterruptedException ie) {
notFull.signal(); // propagate to non-interrupted thread
throw ie;
}
}
} finally {
lock.unlock();
}
}
public RunnableScheduledFuture<?> take() throws InterruptedException {
final ReentrantLock lock = this.lock;
lock.lockInterruptibly();
try {
for (; ; ) {
RunnableScheduledFuture<?> first = queue[0];
if (first == null) available.await();
else {
long delay = first.getDelay(NANOSECONDS);
if (delay <= 0) return finishPoll(first);
else if (leader != null) available.await();
else {
Thread thisThread = Thread.currentThread();
leader = thisThread;
try {
available.awaitNanos(delay);
} finally {
if (leader == thisThread) leader = null;
}
}
}
}
} finally {
if (leader == null && queue[0] != null) available.signal();
lock.unlock();
}
}
/**
* Blocks until an object is received that is handled by process, or the specified timeout has
* passed.
*
* <p>Once closed any attempt to wait will throw an exception.
*
* @param timeout The timeout in milliseconds.
* @return The object that resolved the blocking.
* @throws QpidException
* @throws FailoverException
*/
public Object block(long timeout) throws QpidException, FailoverException {
if (timeout < 0) {
throw new IllegalArgumentException("timeout must be zero or greater");
}
long nanoTimeout = TimeUnit.MILLISECONDS.toNanos(timeout);
_lock.lock();
try {
if (_closed) {
throw throwClosedException();
}
if (_error == null) {
_waiting.set(true);
while (!_ready && _error == null) {
try {
nanoTimeout = _receivedCondition.awaitNanos(nanoTimeout);
if (nanoTimeout <= 0 && !_ready && _error == null) {
_error = new AMQTimeoutException("Server did not respond in a timely fashion", null);
_ready = true;
}
} catch (InterruptedException e) {
_logger.error(e.getMessage(), e);
// IGNORE -- //fixme this isn't ideal as being interrupted isn't equivalent to
// success
}
}
}
if (_error != null) {
if (_error instanceof QpidException) {
throw (QpidException) _error;
} else if (_error instanceof FailoverException) {
// This should ensure that FailoverException is not wrapped and can be caught.
throw (FailoverException) _error; // needed to expose FailoverException.
} else {
throw new QpidException("Woken up due to " + _error.getClass(), _error);
}
}
} finally {
_waiting.set(false);
// Release Error handling thread
if (_error != null) {
_errorAck = true;
_errorConditionAck.signal();
_error = null;
}
_lock.unlock();
}
return _doneObject;
}
@Override
public E pollFirst(long timeout, TimeUnit unit) throws InterruptedException {
long nanos = unit.toNanos(timeout);
final ReentrantLock lock = this.lock;
lock.lockInterruptibly();
E result;
try {
while ((result = removeAt(0)) == null && nanos > 0) nanos = notEmpty.awaitNanos(nanos);
} finally {
lock.unlock();
}
return result;
}
@Override
public E pollLast(long timeout, TimeUnit unit) throws InterruptedException {
long nanos = unit.toNanos(timeout);
final ReentrantLock lock = this.lock;
lock.lock();
E result;
try {
int indexMax = indexOfLargerChild(deque, size, 0, comparator);
int indexRemove = indexMax > 0 ? indexMax : 0;
while ((result = removeAt(indexRemove)) == null && nanos > 0)
nanos = notEmpty.awaitNanos(nanos);
} finally {
lock.unlock();
}
return result;
}
@Override
public boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException {
long nanos = unit.toNanos(timeout);
lock.lock();
try {
for (; ; ) {
if (isTerminated()) {
return true;
} else if (nanos <= 0) {
return false;
} else {
nanos = termination.awaitNanos(nanos);
}
}
} finally {
lock.unlock();
}
}
@Override
public List<OTEServerLocation> findServerByMachine(String regex, long timeoutMs)
throws URISyntaxException {
lock.lock();
List<OTEServerLocation> locations = findServerByMachine(regex);
try {
long nanos = TimeUnit.MILLISECONDS.toNanos(timeoutMs);
while (nanos > 0 && locations.size() == 0) {
try {
nanos = condition.awaitNanos(nanos);
locations = findServerByMachine(regex);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
} finally {
lock.unlock();
}
return locations;
}
public E poll(long timeout, TimeUnit unit) throws InterruptedException {
long nanos = unit.toNanos(timeout);
final ReentrantLock lock = this.lock;
lock.lockInterruptibly();
try {
for (; ; ) {
if (count != 0) {
E x = extract();
return x;
}
if (nanos <= 0) return null;
try {
nanos = notEmpty.awaitNanos(nanos);
} catch (InterruptedException ie) {
notEmpty.signal(); // propagate to non-interrupted thread
throw ie;
}
}
} finally {
lock.unlock();
}
}
/**
* Inserts the specified element at the tail of this queue, waiting up to the specified wait time
* for space to become available if the queue is full.
*
* @throws InterruptedException {@inheritDoc}
* @throws NullPointerException {@inheritDoc}
*/
public boolean offer(E e, long timeout, TimeUnit unit) throws InterruptedException {
if (e == null) throw new NullPointerException();
long nanos = unit.toNanos(timeout);
final ReentrantLock lock = this.lock;
lock.lockInterruptibly();
try {
for (; ; ) {
if (count != items.length) {
insert(e);
return true;
}
if (nanos <= 0) return false;
try {
nanos = notFull.awaitNanos(nanos);
} catch (InterruptedException ie) {
notFull.signal(); // propagate to non-interrupted thread
throw ie;
}
}
} finally {
lock.unlock();
}
}
public void waitUntilOffset(long offset, long timeout, TimeUnit timeUnit) throws StoreException {
if (offset < 0) {
throw new StoreException("KafkaStoreReaderThread can't wait for a negative offset.");
}
log.trace("Waiting to read offset {}. Currently at offset {}", offset, offsetInSchemasTopic);
try {
offsetUpdateLock.lock();
long timeoutNs = TimeUnit.NANOSECONDS.convert(timeout, timeUnit);
while ((offsetInSchemasTopic < offset) && (timeoutNs > 0)) {
try {
timeoutNs = offsetReachedThreshold.awaitNanos(timeoutNs);
} catch (InterruptedException e) {
log.debug(
"Interrupted while waiting for the background store reader thread to reach"
+ " the specified offset: "
+ offset,
e);
}
}
} finally {
offsetUpdateLock.unlock();
}
if (offsetInSchemasTopic < offset) {
throw new StoreTimeoutException(
"KafkaStoreReaderThread failed to reach target offset within the timeout interval. "
+ "targetOffset: "
+ offset
+ ", offsetReached: "
+ offsetInSchemasTopic
+ ", timeout(ms): "
+ TimeUnit.MILLISECONDS.convert(timeout, timeUnit));
}
}
/**
* Retrieves and removes the head of this queue, waiting if necessary until an element with an
* expired delay is available on this queue.
*
* @return the head of this queue
* @throws InterruptedException {@inheritDoc}
*/
public E take() throws InterruptedException {
final ReentrantLock lock = this.lock;
lock.lockInterruptibly();
try {
for (; ; ) {
E first = q.peek();
if (first == null) {
available.await();
} else {
long delay = first.getDelay(TimeUnit.NANOSECONDS);
if (delay > 0) {
long tl = available.awaitNanos(delay);
} else {
E x = q.poll();
assert x != null;
if (q.size() != 0) available.signalAll(); // wake up other takers
return x;
}
}
}
} finally {
lock.unlock();
}
}
public Object down(Event evt) {
switch (evt.getType()) {
case Event.LOCK:
LockInfo info = (LockInfo) evt.getArg();
ClientLock lock = getLock(info.getName());
if (!info.isTrylock()) {
if (info.isLockInterruptibly()) {
try {
lock.lockInterruptibly();
} catch (InterruptedException e) {
Thread.currentThread()
.interrupt(); // has to be checked by caller who has to rethrow ...
}
} else lock.lock();
} else {
if (info.isUseTimeout()) {
try {
return lock.tryLock(info.getTimeout(), info.getTimeUnit());
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
} else {
return lock.tryLock();
}
}
return null;
case Event.UNLOCK:
info = (LockInfo) evt.getArg();
lock = getLock(info.getName(), false);
if (lock != null) lock.unlock();
return null;
case Event.UNLOCK_ALL:
unlockAll();
return null;
case Event.LOCK_AWAIT:
info = (LockInfo) evt.getArg();
lock = getLock(info.getName(), false);
if (lock == null || !lock.acquired) {
throw new IllegalMonitorStateException();
}
Condition condition = lock.newCondition();
if (info.isUseTimeout()) {
try {
return condition.awaitNanos(info.getTimeUnit().toNanos(info.getTimeout()));
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
} else if (info.isLockInterruptibly()) {
try {
condition.await();
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
} else {
condition.awaitUninterruptibly();
}
break;
case Event.LOCK_SIGNAL:
AwaitInfo awaitInfo = (AwaitInfo) evt.getArg();
lock = getLock(awaitInfo.getName(), false);
if (lock == null || !lock.acquired) {
throw new IllegalMonitorStateException();
}
sendSignalConditionRequest(awaitInfo.getName(), awaitInfo.isAll());
break;
case Event.SET_LOCAL_ADDRESS:
local_addr = (Address) evt.getArg();
break;
case Event.VIEW_CHANGE:
handleView((View) evt.getArg());
break;
}
return down_prot.down(evt);
}