/// <summary>Close the DomainSocketWatcher and wait for its thread to terminate.</summary>
/// <remarks>
/// Close the DomainSocketWatcher and wait for its thread to terminate.
/// If there is more than one close, all but the first will be ignored.
/// </remarks>
/// <exception cref="System.IO.IOException"/>
public void Close()
{
Lock.Lock();
try
{
if (closed)
{
return;
}
if (Log.IsDebugEnabled())
{
Log.Debug(this + ": closing");
}
closed = true;
}
finally
{
Lock.Unlock();
}
// Close notificationSockets[0], so that notificationSockets[1] gets an EOF
// event. This will wake up the thread immediately if it is blocked inside
// the select() system call.
notificationSockets[0].Close();
// Wait for the select thread to terminate.
Uninterruptibles.JoinUninterruptibly(watcherThread);
}
public void Dispose()
{
lock (this)
{
//System.out.println("NRT: set finish");
Finish = true;
// So thread wakes up and notices it should finish:
ReopenLock.Lock();
try
{
ReopenCond.Set();
}
finally
{
ReopenLock.Unlock();
}
try
{
Join();
}
catch (ThreadInterruptedException ie)
{
throw new ThreadInterruptedException(ie);
}
// Max it out so any waiting search threads will return:
SearchingGen = long.MaxValue;
Monitor.PulseAll(this);
}
}
/// <summary>
/// This method handles the following conditions:
/// <ul>
/// <li>If retry is not to be processed, return null</li>
/// <li>If there is no cache entry, add a new entry
/// <paramref name="newEntry"/>
/// and return
/// it.</li>
/// <li>If there is an existing entry, wait for its completion. If the
/// completion state is
/// <see cref="CacheEntry.Failed"/>
/// , the expectation is that the
/// thread that waited for completion, retries the request. the
/// <see cref="CacheEntry"/>
/// state is set to
/// <see cref="CacheEntry.Inprogress"/>
/// again.
/// <li>If the completion state is
/// <see cref="CacheEntry.Success"/>
/// , the entry is
/// returned so that the thread that waits for it can can return previous
/// response.</li>
/// <ul>
/// </summary>
/// <returns>
///
/// <see cref="CacheEntry"/>
/// .
/// </returns>
private RetryCache.CacheEntry WaitForCompletion(RetryCache.CacheEntry newEntry)
{
RetryCache.CacheEntry mapEntry = null;
Lock.Lock();
try
{
mapEntry = set.Get(newEntry);
// If an entry in the cache does not exist, add a new one
if (mapEntry == null)
{
if (Log.IsTraceEnabled())
{
Log.Trace("Adding Rpc request clientId " + newEntry.clientIdMsb + newEntry.clientIdLsb
+ " callId " + newEntry.callId + " to retryCache");
}
set.Put(newEntry);
retryCacheMetrics.IncrCacheUpdated();
return(newEntry);
}
else
{
retryCacheMetrics.IncrCacheHit();
}
}
finally
{
Lock.Unlock();
}
// Entry already exists in cache. Wait for completion and return its state
Preconditions.CheckNotNull(mapEntry, "Entry from the cache should not be null");
// Wait for in progress request to complete
lock (mapEntry)
{
while (mapEntry.state == RetryCache.CacheEntry.Inprogress)
{
try
{
Runtime.Wait(mapEntry);
}
catch (Exception)
{
// Restore the interrupted status
Thread.CurrentThread().Interrupt();
}
}
// Previous request has failed, the expectation is is that it will be
// retried again.
if (mapEntry.state != RetryCache.CacheEntry.Success)
{
mapEntry.state = RetryCache.CacheEntry.Inprogress;
}
}
return(mapEntry);
}
// Configuration Keys
/* The queues */
/* Read locks */
private void SignalNotEmpty()
{
takeLock.Lock();
try
{
notEmpty.Signal();
}
finally
{
takeLock.Unlock();
}
}
internal override bool CanCache(int length, ObjectToPack src, ObjectToPack res)
{
Lock.Lock();
try
{
return(base.CanCache(length, src, res));
}
finally
{
Lock.Unlock();
}
}
/// <summary>
/// Returns an array containing all of the elements in this queue; the
/// runtime type of the returned array is that of the specified array.
/// The returned array elements are in no particular order.
/// If the queue fits in the specified array, it is returned therein.
/// Otherwise, a new array is allocated with the runtime type of the
/// specified array and the size of this queue.
///
/// <p>If this queue fits in the specified array with room to spare
/// (i.e., the array has more elements than this queue), the element in
/// the array immediately following the end of the queue is set to
/// <tt>null</tt>.</p>
///
/// <p>Like the {@link #toArray()} method, this method acts as bridge between
/// array-based and collection-based APIs. Further, this method allows
/// precise control over the runtime type of the output array, and may,
/// under certain circumstances, be used to save allocation costs.</p>
///
/// <p>Suppose <tt>x</tt> is a queue known to contain only strings.
/// The following code can be used to dump the queue into a newly
/// allocated array of <tt>String</tt>:</p>
///
/// <pre>
/// String[] y = x.toArray(new String[0]);</pre>
///
/// Note that <tt>toArray(new Object[0])</tt> is identical in function to
/// <tt>toArray()</tt>.
/// </summary>
/// <param name="target">the array into which the elements of the queue are to
/// be stored, if it is big enough; otherwise, a new array of the
/// same runtime type is allocated for this purpose</param>
/// <exception cref="ArgumentNullException">if <paramref name="target"/> is null</exception>
public T[] ToArray(T[] target)
{
if (target == null)
{
throw new ArgumentNullException("target must not be null");
}
ReentrantLock rl = _lock;
rl.Lock();
try {
int targetSize = target.Length;
int sourceSize = Count;
if (targetSize < sourceSize)
{
target = new T[sourceSize];
}
int k = 0;
foreach (T item in _innerQueue)
{
target[k++] = item;
}
for (; targetSize < sourceSize; targetSize++)
{
target[targetSize] = default(T);
}
return(target);
}
finally {
rl.Unlock();
}
}
/**
* @throws UnsupportedOperationException {@inheritDoc}
* @throws ClassCastException {@inheritDoc}
* @throws NullPointerException {@inheritDoc}
* @throws IllegalArgumentException {@inheritDoc}
*/
//TODO: do we really need this? can we leave it to base class?
public override int DrainTo(ICollection <T> collection)
{
if (collection == null)
{
throw new ArgumentNullException("collection", "must not be null");
}
if (collection == this)
{
throw new ArgumentException("cannot DrainTo this");
}
ReentrantLock rl = _lock;
rl.Lock();
try {
int n = 0;
T element;
while (_innerQueue.Poll(out element))
{
collection.Add(element);
++n;
}
return(n);
}
finally {
rl.Unlock();
}
}
/// <summary>
/// Retrieves and removes the head of this queue, waiting up to the
/// specified wait time if necessary for an element to become available.
/// </summary>
/// <param name="timeout">how long to wait before giving up</param>
/// <param name="element"></param>
/// <returns>
/// the head of this queue, or <see lang="default(T)"/> if the
/// specified waiting time elapses before an element is available.
/// </returns>
public override bool Poll(TimeSpan timeout, out T element)
{
ReentrantLock rl = _lock;
rl.LockInterruptibly();
try {
DateTime deadline = DateTime.Now + timeout;
for (; ;)
{
if (_innerQueue.Poll(out element))
{
return(true);
}
if (timeout.TotalMilliseconds <= 0)
{
return(false);
}
try {
notEmpty.Await(timeout);
timeout = deadline - DateTime.Now;
}
catch (ThreadInterruptedException) {
notEmpty.Signal(); // propagate to non-interrupted thread
throw;
}
}
}
finally {
rl.Unlock();
}
}
/// <summary>
/// Retrieves and removes the head of this queue, waiting if necessary
/// until an element becomes available.
/// </summary>
/// <returns> the head of this queue</returns>
public override T Take()
{
ReentrantLock rl = _lock;
rl.LockInterruptibly();
try {
try {
while (_innerQueue.Count == 0)
{
notEmpty.Await();
}
}
catch (ThreadInterruptedException) {
notEmpty.Signal(); // propagate to non-interrupted thread
throw;
}
T element;
if (!_innerQueue.Poll(out element))
{
throw new InvalidOperationException("Poll returns unexpected false");
}
return(element);
}
finally {
rl.Unlock();
}
}
/**
* Retrieves and removes the head of this queue, if another thread
* is currently making an element available.
*
* @return the head of this queue, or <tt>null</tt> if no
* element is available.
*/
public override bool Poll(out T element)
{
ReentrantLock qlock = _qlock;
for (; ;)
{
Node node;
qlock.Lock();
try
{
node = _waitingProducers.Dequeue();
}
finally
{
qlock.Unlock();
}
if (node == null)
{
element = default(T);
return(false);
}
else
{
T x;
if (node.GetItem(out x))
{
element = x;
return(true);
}
// else retry
}
}
}
// Untimed nonblocking versions
/// <summary>
/// Inserts the specified element into this queue, if another thread is
/// waiting to receive it.
/// </summary>
/// <param name="element">the element to add</param>
/// <returns><tt>true</tt> if the element was added to this queue, else <tt>false</tt></returns>
/// <exception cref="ArgumentNullException" />
public override bool Offer(T element)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
ReentrantLock qlock = _qlock;
for (; ;)
{
Node node;
qlock.Lock();
try
{
node = _waitingConsumers.Dequeue();
}
finally
{
qlock.Unlock();
}
if (node == null)
{
return(false);
}
else if (node.SetItem(element))
{
return(true);
}
// else retry
}
}
/// <summary>
/// Retrieves and removes the head of this queue, waiting up to the
/// specified wait time if necessary for an element to become available.
/// </summary>
/// <param name="element">
/// Set to the head of this queue. <c>default(T)</c> if queue is empty.
/// </param>
/// <param name="duration">How long to wait before giving up.</param>
/// <returns>
/// <c>false</c> if the queue is still empty after waited for the time
/// specified by the <paramref name="duration"/>. Otherwise <c>true</c>.
/// </returns>
public override bool Poll(TimeSpan duration, out T element)
{
ReentrantLock currentLock = _lock;
currentLock.LockInterruptibly();
try
{
TimeSpan durationToWait = duration;
DateTime deadline = DateTime.Now.Add(durationToWait);
while (!_wrapped.Poll(out element))
{
if (durationToWait.Ticks <= 0)
{
element = default(T);
return(false);
}
try
{
_notEmptyCondition.Await(durationToWait);
durationToWait = deadline.Subtract(DateTime.Now);
}
catch (ThreadInterruptedException)
{
_notEmptyCondition.Signal();
throw;
}
}
_notFullCondition.Signal();
return(true);
}
finally
{
currentLock.Unlock();
}
}
public TopFieldDocs Call()
{
Debug.Assert(slice.Leaves.Length == 1);
TopFieldDocs docs = searcher.Search(Arrays.AsList(slice.Leaves), weight, after, nDocs, sort, true, doDocScores || sort.NeedsScores, doMaxScore);
@lock.Lock();
try
{
AtomicReaderContext ctx = slice.Leaves[0];
int @base = ctx.DocBase;
hq.SetNextReader(ctx);
hq.SetScorer(fakeScorer);
foreach (ScoreDoc scoreDoc in docs.ScoreDocs)
{
fakeScorer.doc = scoreDoc.Doc - @base;
fakeScorer.score = scoreDoc.Score;
hq.Collect(scoreDoc.Doc - @base);
}
// Carry over maxScore from sub:
if (doMaxScore && docs.MaxScore > hq.maxScore)
{
hq.maxScore = docs.MaxScore;
}
}
finally
{
@lock.Unlock();
}
return(docs);
}
/// <summary>
/// Inserts the specified element into this queue, waiting if necessary
/// for space to become available.
/// </summary>
/// <param name="element">the element to add</param>
/// <exception cref="System.ArgumentNullException">
/// If the specified element is <see langword="null"/> and this queue
/// does not permit <see langword="null"/> elements.
/// </exception>
/// <exception cref="System.ArgumentException">
/// If some property of the supplied <paramref name="element"/> prevents
/// it from being added to this queue.
/// </exception>
public override void Put(T element)
{
ReentrantLock currentLock = _lock;
currentLock.LockInterruptibly();
try
{
try
{
while (!_wrapped.Offer(element))
{
_notFullCondition.Await();
}
_notEmptyCondition.Signal();
}
catch (ThreadInterruptedException)
{
_notFullCondition.Signal();
throw;
}
}
finally
{
currentLock.Unlock();
}
}
/// <summary>
/// Synchronously acquire access token, must be called in non-main thread
/// </summary>
/// <returns>accessToken or null</returns>
public string RefreshAccessToken()
{
Log.Logger.Info(Tag, "refreshAccessToken begin");
try
{
if (service != null)
{
getATLock.Lock();
try
{
GetAccessToken();
}
finally
{
getATLock.Unlock();
}
Log.Logger.Debug(Tag, "refreshAccessToken return new");
}
else
{
Log.Logger.Error(Tag, "refreshAccessToken client is null, return null");
}
}
catch (Exception e)
{
Log.Logger.Error(Tag, "refreshAccessToken exception, return null");
}
Log.Logger.Info(Tag, "refreshAccessToken end");
return(accessToken);
}
private void Run()
{
if (!IsAlive)
{
SignalStop();
return;
}
Stopwatch timer = Stopwatch.StartNew();
@lock.Lock();
try
{
doUpdate();
}
catch (Exception exception)
{
handleException(exception);
}
finally
{
@lock.Unlock();
timer.Stop();
long driftAdjusted = Math.Max(interval - timer.ElapsedMilliseconds, 0);
if (IsAlive)
RegisterWait(driftAdjusted);
else
SignalStop();
}
}
/// <summary>
/// Does the real work for all <c>Drain</c> methods. Caller must
/// guarantee the <paramref name="action"/> is not <c>null</c> and
/// <paramref name="maxElements"/> is greater then zero (0).
/// </summary>
/// <seealso cref="IBlockingQueue{T}.DrainTo(ICollection{T})"/>
/// <seealso cref="IBlockingQueue{T}.DrainTo(ICollection{T}, int)"/>
/// <seealso cref="IBlockingQueue{T}.Drain(System.Action{T})"/>
/// <seealso cref="IBlockingQueue{T}.DrainTo(ICollection{T},int)"/>
protected override int DoDrainTo(Action <T> action, int maxElements)
{
ReentrantLock currentLock = _lock;
currentLock.Lock();
try
{
T element;
int n;
for (n = 0; n < maxElements && _wrapped.Poll(out element); n++)
{
action(element);
}
if (n == 1)
{
_notFullCondition.Signal();
}
else if (n != 0)
{
_notFullCondition.SignalAll();
}
return(n);
}
finally
{
currentLock.Unlock();
}
}
/// <summary>
/// Retrieves and removes the head of this queue, waiting if necessary
/// until an element becomes available.
/// </summary>
/// <returns> the head of this queue</returns>
public override T Take()
{
ReentrantLock currentLock = _lock;
currentLock.LockInterruptibly();
try
{
try
{
T element;
while (!_wrapped.Poll(out element))
{
_notEmptyCondition.Await();
}
_notFullCondition.Signal();
return(element);
}
catch (ThreadInterruptedException)
{
_notEmptyCondition.Signal();
throw;
}
}
finally
{
currentLock.Unlock();
}
}
public TopFieldDocs Call()
{
Debug.Assert(Slice.Leaves.Length == 1);
TopFieldDocs docs = Searcher.Search(Arrays.AsList(Slice.Leaves), Weight, After, NDocs, Sort, true, DoDocScores || Sort.NeedsScores(), DoMaxScore);
@lock.Lock();
try
{
AtomicReaderContext ctx = Slice.Leaves[0];
int @base = ctx.DocBase;
Hq.NextReader = ctx;
Hq.Scorer = FakeScorer;
foreach (ScoreDoc scoreDoc in docs.ScoreDocs)
{
FakeScorer.doc = scoreDoc.Doc - @base;
FakeScorer.score = scoreDoc.Score;
Hq.Collect(scoreDoc.Doc - @base);
}
// Carry over maxScore from sub:
if (DoMaxScore && docs.MaxScore > Hq.MaxScore)
{
Hq.MaxScore = docs.MaxScore;
}
}
finally
{
@lock.Unlock();
}
return(docs);
}
private void DoMaybeRefresh()
{
// it's ok to call lock() here (blocking) because we're supposed to get here
// from either maybeRefreh() or maybeRefreshBlocking(), after the lock has
// already been obtained. Doing that protects us from an accidental bug
// where this method will be called outside the scope of refreshLock.
// Per ReentrantLock's javadoc, calling lock() by the same thread more than
// once is ok, as long as unlock() is called a matching number of times.
refreshLock.Lock();
bool refreshed = false;
try
{
G reference = Acquire();
try
{
NotifyRefreshListenersBefore();
G newReference = RefreshIfNeeded(reference);
if (newReference != null)
{
Debug.Assert((object)newReference != (object)reference, "refreshIfNeeded should return null if refresh wasn't needed");
try
{
SwapReference(newReference);
refreshed = true;
}
finally
{
if (!refreshed)
{
Release(newReference);
}
}
}
}
finally
{
Release(reference);
NotifyRefreshListenersRefreshed(refreshed);
}
AfterMaybeRefresh();
}
finally
{
refreshLock.Unlock();
}
}
public bool AnyChanges()
{
GlobalBufferLock.@Lock();
try
{
/*
* check if all items in the global slice were applied
* and if the global slice is up-to-date
* and if globalBufferedUpdates has changes
*/
return(GlobalBufferedUpdates.Any() || !GlobalSlice.Empty || GlobalSlice.SliceTail != Tail || Tail.Next != null);
}
finally
{
GlobalBufferLock.Unlock();
}
}
internal bool AnyChanges()
{
globalBufferLock.@Lock();
try
{
/*
* check if all items in the global slice were applied
* and if the global slice is up-to-date
* and if globalBufferedUpdates has changes
*/
return(globalBufferedUpdates.Any() || !globalSlice.IsEmpty || globalSlice.sliceTail != tail || tail.next != null);
}
finally
{
globalBufferLock.Unlock();
}
}
public void Start()
{
lifecycleLock.Lock();
try {
if (!running)
{
DoStart();
running = true;
if (logger.IsInfoEnabled)
{
logger.Info("started " + this);
}
}
}
finally {
lifecycleLock.Unlock();
}
}
/**
* \brief Deinitialization, unload stuff and release surface texture.
*/
public void deinit()
{
unload();
mSurfaceTextureLock.Lock();
mSurfaceTexture = null;
mSurfaceTextureLock.Unlock();
}
/**
* Retrieves and removes the head of this queue, waiting
* if necessary up to the specified wait time, for another thread
* to insert it.
*
* @return the head of this queue, or <tt>null</tt> if the
* specified waiting time elapses before an element is present.
* @throws InterruptedException {@inheritDoc}
*/
public override bool Poll(TimeSpan timeout, out T element)
{
long nanos = timeout.Ticks; // unit.toNanos(timeout);
ReentrantLock qlock = _qlock;
for (; ;)
{
Node node;
bool mustWait;
//if (Thread.interrupted()) throw new InterruptedException();
qlock.Lock();
try
{
node = _waitingProducers.Dequeue();
mustWait = (node == null);
if (mustWait)
{
node = _waitingConsumers.Enqueue(default(T));
}
}
finally
{
qlock.Unlock();
}
if (mustWait)
{
try
{
T x;
if (!node.WaitForPut(nanos, out x))
{
UnlinkCancelledConsumer(node);
}
element = x;
return(true);
}
catch (ThreadInterruptedException)
{
UnlinkCancelledConsumer(node);
throw;
}
}
else
{
T x;
if (node.GetItem(out x))
{
element = x;
return(true);
}
// else cancelled, so retry
}
}
}
/**
* Inserts the specified element into this queue, waiting if necessary
* up to the specified wait time for another thread to receive it.
*
* @return <tt>true</tt> if successful, or <tt>false</tt> if the
* specified waiting time elapses before a consumer appears.
* @throws InterruptedException {@inheritDoc}
* @throws NullPointerException {@inheritDoc}
*/
public override bool Offer(T e, TimeSpan timeout)
{
if (e == null)
{
throw new ArgumentNullException();
}
long nanos = DateTime.Now.Ticks;// unit.toNanos(timeout);
ReentrantLock qlock = _qlock;
for (; ;)
{
Node node;
bool mustWait;
//if (Thread.interrupted()) throw new InterruptedException();
qlock.Lock();
try
{
node = _waitingConsumers.Dequeue();
mustWait = (node == null);
if (mustWait)
{
node = _waitingProducers.Enqueue(e);
}
}
finally
{
qlock.Unlock();
}
if (mustWait)
{
try
{
bool x = node.WaitForTake(nanos);
if (!x)
{
UnlinkCancelledProducer(node);
}
return(x);
}
catch (ThreadInterruptedException)
{
UnlinkCancelledProducer(node);
throw;
}
}
if (node.SetItem(e))
{
return(true);
}
// else consumer cancelled, so retry
}
}
public ZKRebalancerListener(
ZookeeperConsumerConnector parent,
string group,
string consumerIdString,
IDictionary <string, IList <KafkaStream <TKey, TValue> > > kafkaMessageAndMetadataStreams)
{
this.parent = parent;
this.group = group;
this.consumerIdString = consumerIdString;
this.KafkaMessageAndMetadataStreams = kafkaMessageAndMetadataStreams;
this.@lock = new ReentrantLock();
this.cond = [email protected]();
this.watcherExecutorThread = new Thread(() =>
{
Logger.InfoFormat("starting watcher executor thread for consumer {0}", consumerIdString);
bool doRebalance;
while (!parent.isShuttingDown.Get())
{
try
{
[email protected]();
try
{
if (!isWatcherTriggered)
{
cond.Await(TimeSpan.FromMilliseconds(1000)); // wake up periodically so that it can check the shutdown flag
}
}
finally
{
doRebalance = isWatcherTriggered;
isWatcherTriggered = false;
@lock.Unlock();
}
if (doRebalance)
{
this.SyncedRebalance();
}
}
catch (Exception e)
{
Logger.Error("Error during syncedRebalance", e);
}
}
Logger.InfoFormat("Stoppping watcher executer thread for consumer {0}", consumerIdString);
});
this.watcherExecutorThread.Name = consumerIdString + "_watcher_executor";
this.watcherExecutorThread.Start();
}
public void HandleDataDeleted(string dataPath)
{
dataLock.Lock();
try
{
dataExistsOrChanged.Signal();
}
finally
{
dataLock.Unlock();
}
}
/// <summary>
/// Atomically removes all of the elements from this queue.
/// The queue will be empty after this call returns.
/// </summary>
public override void Clear()
{
ReentrantLock rl = _lock;
rl.Lock();
try {
_innerQueue.Clear();
}
finally {
rl.Unlock();
}
}
public override bool IsCancelled()
{
Lock.Lock();
try
{
return(pm.IsCancelled());
}
finally
{
Lock.Unlock();
}
}