public static List<Builder> LoadBuildersWithTasks(int numberOfBuilders)
{
BlockingCollection<Builder> buildersToLoad = new BlockingCollection<Builder>();
BlockingCollection<Builder> loadedBuilders = new BlockingCollection<Builder>();
for (int i = 0; i < numberOfBuilders; i++)
{
buildersToLoad.Add(new Builder { Name = "Builder" + i, Status = "Status" + i });
}
buildersToLoad.CompleteAdding();
Task loader1 = Task.Factory.StartNew(() =>
{
foreach (Builder item in buildersToLoad.GetConsumingEnumerable())
{
Thread.Sleep(1000);
loadedBuilders.Add(item);
}
}, TaskCreationOptions.LongRunning);
Task loader2 = Task.Factory.StartNew(() =>
{
foreach (Builder item in buildersToLoad.GetConsumingEnumerable())
{
Thread.Sleep(1000);
loadedBuilders.Add(item);
}
}, TaskCreationOptions.LongRunning);
Task.WaitAll(loader1, loader2);
return loadedBuilders.ToList();
}
/// <summary>
/// Stops the consumer, specifying the exact number of frame that should be consumed. Which
/// may arrive in the future. So, the consumer will wait for it, within a timeout.
/// </summary>
/// <param name="lastItemToConsume">
/// Number of the last frame that should be consumed. This could be some number in the
/// future. Then the consumer will keep going until a frame with this number or larger is added.
/// </param>
/// <param name="timeoutMilliseconds">Number of miliseconds the consumer will wait for the last
/// item to consume. If it doesn't come it will stop anyway.</param>
public void Stop(long lastItemToConsume, int timeoutMilliseconds = 5000)
{
// Save the number of frame that should be the last to be consumed. For processing videos
// this will be the last frame of the video or of the range that is being postprocessed.
// For cameras this will be the current frame at the time the stop recording is received.
this.lastItemNumberToConsume = lastItemToConsume;
// If the last item added is the same as the desired last item to consume we can mark the
// buffer as completed and the consumer loop will stop when it finishes consuming the items.
if (LastItemAdded >= lastItemToConsume)
{
buffer?.CompleteAdding();
}
// If the last item to be consumed has not
// been added yet we have to wait for it to arrive and tryAdd will mark the buffer
// as completed. There is the posibility that it never arrives because it was dropped
// at processing so we have a timeout for that case.
Task.Delay(timeoutMilliseconds).ContinueWith((t) =>
{
// If we have a timeout we will asume that last item to be consumed will never
// arrive and we mark the buffer as completed and wait for the consumer loop to
// finish consuming whatever it can.
buffer?.CompleteAdding();
});
}
public async Task StopAsync(CancellationToken cancellationToken)
{
// Stop called without start
if (_executingThread is null)
{
return;
}
_logger.LogInformation($"{DateTime.Now} Digitalstrom Event Subscriber Service is stopping.");
_dssEventSubscriber?.Dispose();
_dssEventSubscriber = null;
_persistenceQueue?.CompleteAdding();
_persistenceQueue = null;
try
{
// Signal cancellation to the executing method
_cancellationSource?.Cancel();
}
finally
{
// Wait until the thread completes or the stop token triggers
await Task.WhenAny(_executingThread, Task.Delay(Timeout.Infinite, cancellationToken));
}
}
private static void Decrypt(Func<IBufferedCipher> engine, string encryptedFileName, bool allPaddings)
{
// Load the encrypted file.
var encrpted = File.ReadAllBytes(encryptedFileName);
// IProducerConsumerCollection
using (var producerConsumerCollection = new BlockingCollection<string>(50000))
{
// Consumer.
var tasks = new List<Task>();
for (int workingThread = 0; workingThread < Environment.ProcessorCount; workingThread++)
{
tasks.Add(Task.Factory.StartNew(() => DecryptThread(engine(), encrpted, producerConsumerCollection, allPaddings)));
}
// Producer.
while (true)
{
var line = Console.ReadLine();
if (line == null)
{
producerConsumerCollection.CompleteAdding();
break;
}
producerConsumerCollection.Add(line);
}
// Wait until processing is done.
foreach (Task task in tasks)
{
task.Wait();
}
}
}
public static void Run()
{
int size = 10;
BlockingCollection<int> col = new BlockingCollection<int>(size/3);
Task read = Task.Run(() =>
{
foreach(var item in col.GetConsumingEnumerable())
{
Console.WriteLine("Read " + item);
}
});
Task write = Task.Run(() =>
{
foreach(int i in Enumerable.Range(1, size))
{
Console.WriteLine("adding " + i);
col.Add(i);
}
col.CompleteAdding();
});
write.Wait();
read.Wait();
}
/// <summary>
/// Do the specified input and output.
/// </summary>
/// <param name="input">Input.</param>
/// <param name="output">Output.</param>
public void Do(BlockingCollection<ISkeleton> input, BlockingCollection<ISkeleton> output)
{
var skeletons = new List<ISkeleton>();
try
{
foreach (var skeleton in input.GetConsumingEnumerable())
{
skeletons.Add(skeleton);
if (skeletons.Count < 3)
{
continue;
}
var first = skeletons.First();
var tail = skeletons.Skip(1);
foreach (var joint in first.Joints)
{
var tailJoints = tail.Select(s => s.GetJoint(joint.JointType));
joint.Point = Mean(new List<Vector3> { joint.Point }.Concat(tailJoints.Select(j => j.Point)).ToList());
joint.Orientation = Mean(new List<Vector4> { joint.Orientation }.Concat(tailJoints.Select(j => j.Orientation)).ToList());
first.UpdateSkeleton(joint.JointType, joint);
}
output.Add(first);
skeletons.Clear();
}
}
finally
{
output.CompleteAdding();
}
}
public void IterationFinished(int iteration, int totalIterations)
{
_tripStorageQueue?.CompleteAdding();
_StoreTrips?.Wait();
_tripStorageQueue?.Dispose();
_tripStorageQueue = null;
}
private async Task <(long size, long ios)> GenerateInternalAndReturnBytesWritten()
{
var chunkQueue = new BlockingCollection <WriterWorkItem>(_maxQueuedChunks);
var state = new WriterState
{
RequestedFileSizeInBytes = _targetFileSizeInBytes
};
var bufferPool = ArrayPool <byte> .Shared;
_logger($"Writing {_targetFileSizeInBytes/Units.BytesPerMiB} MiB of test data...");
try
{
var cancellationTokenSource = new CancellationTokenSource();
var consumerTasks = LaunchChunkWriters(state, chunkQueue, bufferPool);
var producerTasks = LaunchChunkProducers(chunkQueue, bufferPool, cancellationTokenSource.Token);
var allTasks = producerTasks.Concat(consumerTasks);
var result = await Task.WhenAny(allTasks);
cancellationTokenSource.Cancel();
ThrowIfFailed(result);
await Task.WhenAll(allTasks);
return(GetActualFileSize(), state.WriteRequests);
}
finally
{
chunkQueue?.CompleteAdding();
}
}
private void ResetConnections()
{
_queue.DispatchAsync(() =>
{
_client?.Dispose();
_client = null;
NetworkStream?.Dispose();
NetworkStream = null;
_readWriteCancellationTokenSource?.Cancel();
_readWriteCancellationTokenSource?.Dispose();
_readWriteCancellationTokenSource = null;
_receivePause?.Dispose();
_receivePause = null;
_writeQueue?.CompleteAdding();
var count = 0;
while (count++ < 5 && _writeQueue != null && !_writeQueue.IsCompleted)
{
Thread.Sleep(500);
}
if (_writeQueue != null && !_writeQueue.IsCompleted)
{
Log.To.Sync.W(Tag, "Timed out waiting for _writeQueue to finish, forcing Dispose...");
}
_writeQueue?.Dispose();
_writeQueue = null;
});
}
static void Main(string[] args)
{
// create a blocking collection
BlockingCollection<int> blockingCollection
= new BlockingCollection<int>();
// create and start a producer
Task.Factory.StartNew(() => {
// put the producer to sleep
System.Threading.Thread.Sleep(500);
for (int i = 0; i < 100; i++) {
// add the item to the collection
blockingCollection.Add(i);
}
// mark the collection as finished
blockingCollection.CompleteAdding();
});
// create and start a consumer
Task consumer = Task.Factory.StartNew(() => {
// use a foreach loop to consume the blocking collection
foreach (int i in blockingCollection) {
Console.WriteLine("Item {0}", i);
}
Console.WriteLine("Collection is fully consumed");
});
// wait for the consumer to finish
consumer.Wait();
// wait for input before exiting
Console.WriteLine("Press enter to finish");
Console.ReadLine();
}
/// <summary>
/// Stops polling for messages, waits for current messages to be handled, then
/// closes and disposes the consumer.
/// </summary>
protected override void Dispose(bool disposing)
{
if (_disposed)
{
return;
}
_disposed = true;
_stopped = true;
_disposeSource.Cancel();
if (_pollingThread.IsValueCreated)
{
_pollingThread.Value.Join();
}
_trackingCollection?.CompleteAdding();
if (_trackingThread?.IsValueCreated is true)
{
_trackingThread.Value.Join();
}
if (_consumer.IsValueCreated)
{
_consumer.Value.Close();
_consumer.Value.Dispose();
}
base.Dispose(disposing);
}
private void ReadDT()
{
BlockingCollection<string> lines = new BlockingCollection<string>();
var stage1 = Task.Run(() =>
{
using (StreamReader sr = new StreamReader("text.txt"))
{
string s;
while ((s = sr.ReadLine()) != null)
lines.Add(s);
}
lines.CompleteAdding();
});
var stage2 = Task.Run(() =>
{
int i = 0;
dataGridView1.Invoke((Action)(() => dataGridView1.SuspendLayout()));
foreach (string line in lines.GetConsumingEnumerable())
{
dataGridView1.Invoke((Action)(() => dataGridView1.Rows.Add(line.Split(';'))));
dataGridView1.Invoke((Action)(() => dataGridView1.Rows[i].HeaderCell.Value = i.ToString()));
i++;
}
dataGridView1.Invoke((Action)(() => dataGridView1.ResumeLayout(false)));
});
Task.WaitAll(stage1, stage2);
}
public void Dispose()
{
if (_isDisposed)
{
return;
}
DisposeTimer();
try
{
_headersRequests?.CompleteAdding();
}
catch (ObjectDisposedException)
{
}
try
{
_bodiesRequests?.CompleteAdding();
}
catch (ObjectDisposedException)
{
}
_isDisposed = true;
}
public static void InternalCancellation_WakingUp()
{
for (int test = 0; test < 2; test++)
{
BlockingCollection<int> coll1 = new BlockingCollection<int>(1);
coll1.Add(1); //fills the collection.
Assert.False(coll1.IsAddingCompleted,
"InternalCancellation_WakingUp: At this point CompleteAdding should not have occurred.");
// This is racy on what we want to test, in that it's possible this queued work could execute
// so quickly that CompleteAdding happens before the tested method gets invoked, but the test
// should still pass in such cases, we're just testing something other than we'd planned.
Task t = Task.Run(() => coll1.CompleteAdding());
// Try different methods that should wake up once CompleteAdding has been called
int item = coll1.Take(); // remove the existing item in the collection
switch (test)
{
case 0:
Assert.Throws<InvalidOperationException>(() => coll1.Take());
break;
case 1:
Assert.False(coll1.TryTake(out item));
break;
}
t.Wait();
Assert.True(coll1.IsAddingCompleted,
"InternalCancellation_WakingUp: At this point CompleteAdding should have occurred.");
}
}
/// <summary>
/// Perform complete operation. In this method all threads/tasks are synchronized including final
/// data reporting (via _dataStorage)
/// </summary>
/// <returns></returns>
private async Task InternalProcessAsync()
{
if (_domainsTasks == null)
{
return;
}
try
{
await _domainsTasks;
var allIpResolve = WhenAllOrError(_exchangeTasks);
if (_cancellation.IsCancellationRequested)
{
return;
}
await allIpResolve;
_dataStorage?.CompleteAdding();
_dataTask?.Wait();
}
catch (Exception e)
{
// after first exception on this level whole process is terminated, we need only first exception message
// so no need for AggregateException (InnerExceptions)
ErrorMessage = e.Message;
}
}
// Demonstrates:
// BlockingCollection<T>.Add()
// BlockingCollection<T>.Take()
// BlockingCollection<T>.CompleteAdding()
public static void BC_AddTakeCompleteAdding()
{
using (BlockingCollection<int> bc = new BlockingCollection<int>()) {
// Spin up a Task to populate the BlockingCollection
using (Task t1 = Task.Factory.StartNew(() => {
bc.Add(1);
bc.Add(2);
bc.Add(3);
bc.CompleteAdding();
})) {
// Spin up a Task to consume the BlockingCollection
using (Task t2 = Task.Factory.StartNew(() => {
try {
// Consume the BlockingCollection
while (true) Console.WriteLine(bc.Take());
}
catch (InvalidOperationException) {
// An InvalidOperationException means that Take() was called on a completed collection
Console.WriteLine("That's All!");
}
}))
Task.WaitAll(t1, t2);
}
}
}
public static void Main(string[] args)
{
BlockingCollection<string> collection = new BlockingCollection<string>();
Task read = Task.Run(() =>
{
foreach (string v in collection.GetConsumingEnumerable())
{
Console.WriteLine(v);
}
});
Task write = Task.Run(() =>
{
while (true)
{
string s = Console.ReadLine();
if (string.IsNullOrWhiteSpace(s))
{
collection.CompleteAdding();
break;
}
collection.Add(s);
}
});
write.Wait();
}
public void Run()
{
BlockingCollection<string> col = new BlockingCollection<string>();
Task read = Task.Run(() =>
{
foreach (string v in col.GetConsumingEnumerable())
Console.WriteLine(v);
Console.WriteLine("End of read task.");
});
Task write = Task.Run(() =>
{
while (true)
{
string s = Console.ReadLine();
if (string.IsNullOrWhiteSpace(s))
{
col.CompleteAdding();
break;
}
col.Add(s);
}
});
write.Wait();
Thread.Sleep(1000);
}
public int ConsumingEnumerablexample ()
{
var collection = new BlockingCollection<int> ();
var taker = Task<int>.Run (() => {
var take = 0;
foreach (var aTake in collection.GetConsumingEnumerable()) {
take = aTake;
}
return take;
});
var adder = Task.Run (() => {
for (int x = 0; x <= 10; x++) {
collection.Add (x);
System.Threading.Thread.Sleep (1);
}
collection.CompleteAdding ();
});
Task.WaitAll (taker, adder);
return taker.Result;
}
public override IEnumerable<Row> Execute(IEnumerable<Row> rows) {
var blockingCollection = new BlockingCollection<Row>();
var count = _operations.Count;
if (count == 0) {
yield break;
}
Debug("Creating tasks for {0} operations.", count);
var tasks = _operations.Select(currentOp =>
Task.Factory.StartNew(() => {
try {
foreach (var row in currentOp.Execute(null)) {
blockingCollection.Add(row);
}
}
finally {
if (Interlocked.Decrement(ref count) == 0) {
blockingCollection.CompleteAdding();
}
}
})).ToArray();
foreach (var row in blockingCollection.GetConsumingEnumerable()) {
yield return row;
}
Task.WaitAll(tasks); // raise any exception that were raised during execution
}
static void NonBlockingProducer(BlockingCollection<int> bc)
{
int itemToAdd = 0;
bool success = false;
do
{
// A shorter timeout causes more failures.
success = bc.TryAdd(itemToAdd, 2);
if (success)
{
Console.WriteLine(" Add:{0}", itemToAdd);
itemToAdd++;
}
else
{
Console.Write(" AddBlocked:{0} Count = {1} ", itemToAdd.ToString(), bc.Count);
// Don't increment nextItem. Try again on next iteration.
//Do something else useful instead.
UpdateProgress(itemToAdd);
}
} while (itemToAdd < inputs);
// No lock required here because only one producer.
bc.CompleteAdding();
}
private static void Decrypt(IHashAlgorithm algo)
{
// IProducerConsumerCollection
using (var producerConsumerCollection = new BlockingCollection<string>(50000))
{
// Consumer.
var tasks = new List<Task>();
for (int workingThread = 0; workingThread < Environment.ProcessorCount; workingThread++)
{
tasks.Add(Task.Factory.StartNew(() => HashThread(algo, producerConsumerCollection)));
}
// Producer.
while (true)
{
var line = Console.ReadLine();
if (line == null)
{
producerConsumerCollection.CompleteAdding();
break;
}
producerConsumerCollection.Add(line);
}
// Wait until processing is done.
foreach (Task task in tasks)
{
task.Wait();
}
}
}
public object Read(Newtonsoft.Json.JsonReader reader)
{
if (reader.TokenType != Newtonsoft.Json.JsonToken.StartObject)
throw new Exception();
int w = ReadIntProperty(reader, "Width");
int h = ReadIntProperty(reader, "Height");
int d = ReadIntProperty(reader, "Depth");
var grid = new TileData[d, h, w];
reader.Read();
if (reader.TokenType != Newtonsoft.Json.JsonToken.PropertyName || (string)reader.Value != "TileData")
throw new Exception();
ReadAndValidate(reader, Newtonsoft.Json.JsonToken.StartArray);
var queue = new BlockingCollection<Tuple<int, byte[]>>();
var readerTask = Task.Factory.StartNew(() =>
{
for (int i = 0; i < d; ++i)
{
reader.Read();
int z = (int)(long)reader.Value;
byte[] buf = reader.ReadAsBytes();
queue.Add(new Tuple<int, byte[]>(z, buf));
}
queue.CompleteAdding();
});
Parallel.For(0, d, i =>
{
var tuple = queue.Take();
int z = tuple.Item1;
byte[] arr = tuple.Item2;
using (var memStream = new MemoryStream(arr))
{
using (var decompressStream = new DeflateStream(memStream, CompressionMode.Decompress))
using (var streamReader = new BinaryReader(decompressStream))
{
for (int y = 0; y < h; ++y)
for (int x = 0; x < w; ++x)
grid[z, y, x].Raw = streamReader.ReadUInt64();
}
}
});
readerTask.Wait();
ReadAndValidate(reader, Newtonsoft.Json.JsonToken.EndArray);
ReadAndValidate(reader, Newtonsoft.Json.JsonToken.EndObject);
return grid;
}
static void Main(string[] args)
{
// create a blocking collection
BlockingCollection<int> blockingCollection
= new BlockingCollection<int>();
// create and start a producer
Task.Factory.StartNew(() => {
// put items into the collectioon
for (int i = 0; i < 1000; i++) {
blockingCollection.Add(i);
}
// mark the collection as complete
blockingCollection.CompleteAdding();
});
// create and start a producer
Task.Factory.StartNew(() => {
while (!blockingCollection.IsCompleted) {
// take an item from the collection
int item = blockingCollection.Take();
// print out the item
Console.WriteLine("Item {0}", item);
}
});
// wait for input before exiting
Console.WriteLine("Press enter to finish");
Console.ReadLine();
}
private static void ReadFileNames(string path, BlockingCollection<string> output)
{
foreach (string filename in Directory.EnumerateFiles(path, "*.cs"))
{
output.Add(filename);
}
output.CompleteAdding();
}
public void Disconnect()
{
_sendQueue?.CompleteAdding();
_sendQueue = null;
client?.Close();
client = null;
}
/// <summary>
/// stops the session queue worker
/// </summary>
public void StopRlmDbWorkersSessions()
{
bcSessionsToCreate?.CompleteAdding();
bcSessionsToUpdate?.CompleteAdding();
sessionsDone = true;
totalSessionsCount = Sessions.Count;
}
public static void Unregister()
{
MyLog.Default.WriteLineAndConsole("TORCH MOD: Unregistering mod communication.");
MyAPIGateway.Multiplayer?.UnregisterMessageHandler(NET_ID, MessageHandler);
_processing?.CompleteAdding();
_closing = true;
//_task.Wait();
}
static void UseBlockingCollection()
{
var count = 0;
const int countMax = 10;
var blockingCollection = new BlockingCollection<string>();
var producer1 = Task.Factory.StartNew(() =>
{
while (count <= countMax)
{
blockingCollection.Add("value" + count);
count++;
}
blockingCollection.CompleteAdding();
});
var producer2 = Task.Factory.StartNew(() =>
{
while (count <= countMax)
{
blockingCollection.Add("value" + count);
count++;
}
blockingCollection.CompleteAdding();
});
var consumer1 = Task.Factory.StartNew(() =>
{
foreach (var value in blockingCollection.GetConsumingEnumerable())
{
Console.WriteLine("Worker 1: " + value);
Thread.Sleep(1000);
}
});
var consumer2 = Task.Factory.StartNew(() =>
{
foreach (var value in blockingCollection.GetConsumingEnumerable())
{
Console.WriteLine("Worker 1: " + value);
Thread.Sleep(1000);
}
});
Task.WaitAll(producer1, consumer1, consumer2);
}
/// <summary>
/// IDisposable Dispose method to dispose IDisposable resources.
/// </summary>
public void Dispose()
{
Timer?.Dispose();
LogQueue?.CompleteAdding();
WriteQueueTask?.Wait();
StreamWriter?.Dispose();
FileStream?.Dispose();
LogQueue?.Dispose();
}
private static Trial[] LoadDataParallel(string path)
{
BlockingCollection<string> inputLines = new BlockingCollection<string>();
ConcurrentBag<Trial> trials = new ConcurrentBag<Trial>();
int itemsAdded = 0;
int itemsProcessed = 0;
const int outputFrequency = 100000;
List<Task> consumerTasks = new List<Task>();
int counter = 0;
using (StreamReader file = new StreamReader(path))
{
// Skip header
file.ReadLine();
string lineRead;
while ((lineRead = file.ReadLine()) != null)
{
inputLines.Add(lineRead);
++itemsAdded;
if (++counter >= outputFrequency)
{
counter = 0;
Console.Out.WriteLine("Trial lines Read: {0}", itemsAdded);
if (inputLines.Count >= outputFrequency * consumerTasks.Count)
{
consumerTasks.Add(Task.Run(() =>
{
string line;
do
{
while (inputLines.TryTake(out line))
{
string[] fields = line.Trim().Split(new char[] { ',' });
if (fields.Length >= 11)
{
Trial trial = new Trial(fields);
trials.Add(trial);
}
int numProcessed = Interlocked.Increment(ref itemsProcessed);
if (numProcessed % 100000 == 0)
Console.Out.WriteLine("Trial lines processed: {0}", numProcessed);
}
Thread.Sleep(100);
} while (!inputLines.IsCompleted);
}));
}
}
}
inputLines.CompleteAdding();
}
Task.WaitAll(consumerTasks.ToArray());
return trials.ToArray();
}
private void DeactivateRecording()
{
isRecordingPendingFrames = true;
videoFramesQueue?.CompleteAdding();
audioFramesQueue?.CompleteAdding();
Debug.WriteLine($"Video: {videoSamples}, Audio: {audioSamples}, Written: {samplesWritten}");
Debug.WriteLine($"Remaining:: Video: {videoFramesQueue?.Count}, Audio: {audioFramesQueue?.Count}");
}
private void Dispose(bool managed)
{
if (managed)
{
GC.SuppressFinalize(this);
}
_stream?.CompleteAdding();
_stream?.Dispose();
_stream = null;
}
public void Dispose()
{
_timer.Elapsed -= TimedFlush;
_timer.Dispose();
_queue?.CompleteAdding();
_consumerTask?.Wait();
_sw?.Dispose();
_fs?.Dispose();
_queue?.Dispose();
}
public override void Stop()
{
#if TRACK_DETAILED_STATS
if (StatisticsCollector.CollectThreadTimeTrackingStats)
{
threadTracking.OnStopExecution();
}
#endif
requestQueue?.CompleteAdding();
base.Stop();
}
public static Pipeline StartNew(IFilter filter, IEnumerable<object> input, int bufferSize)
{
var inputEnumerable = input as object[] ?? input.ToArray();
var nextStageInput = new BlockingCollection<object>(inputEnumerable.Count());
foreach (var inputElement in inputEnumerable)
{
nextStageInput.Add(inputElement);
}
nextStageInput.CompleteAdding();
return new Pipeline(filter, nextStageInput, new BlockingCollection<object>(bufferSize));
}
public void Dispose()
{
_messageQueue?.CompleteAdding();
try
{
_outputThread.Join(1500); // with timeout in case writer is locked
}
catch (ThreadStateException) { }
_messageQueue?.Dispose();
}
static async Task TaskProducer(BlockingCollection<CustomTask> collection)
{
for (int i = 1; i <= 20; i++)
{
await Task.Delay(20);
var workItem = new CustomTask { Id = i };
collection.Add(workItem);
Console.WriteLine("Task {0} has been posted", workItem.Id);
}
collection.CompleteAdding();
}
static void Main(string[] args)
{
// create the blocking collection
BlockingCollection<Deposit> blockingCollection
= new BlockingCollection<Deposit>();
// create and start the producers, which will generate
// deposits and place them into the collection
Task[] producers = new Task[3];
for (int i = 0; i < 3; i++) {
producers[i] = Task.Factory.StartNew(() => {
// create a series of deposits
for (int j = 0; j < 20; j++) {
// create the transfer
Deposit deposit = new Deposit { Amount = 100 };
// place the transfer in the collection
blockingCollection.Add(deposit);
}
});
};
// create a many to one continuation that will signal
// the end of production to the consumer
Task.Factory.ContinueWhenAll(producers, antecedents => {
// signal that production has ended
Console.WriteLine("Signalling production end");
blockingCollection.CompleteAdding();
});
// create a bank account
BankAccount account = new BankAccount();
// create the consumer, which will update
// the balance based on the deposits
Task consumer = Task.Factory.StartNew(() => {
while (!blockingCollection.IsCompleted) {
Deposit deposit;
// try to take the next item
if (blockingCollection.TryTake(out deposit)) {
// update the balance with the transfer amount
account.Balance += deposit.Amount;
}
}
// print out the final balance
Console.WriteLine("Final Balance: {0}", account.Balance);
});
// wait for the consumer to finish
consumer.Wait();
// wait for input before exiting
Console.WriteLine("Press enter to finish");
Console.ReadLine();
}
public static Task ReadFilenamesAsync(string path, BlockingCollection<string> output)
{
return Task.Run(() =>
{
foreach (string filename in Directory.EnumerateFiles(path, "*.cs", SearchOption.AllDirectories))
{
output.Add(filename);
ConsoleHelper.WriteLine(string.Format("stage 1: added {0}", filename));
}
output.CompleteAdding();
});
}
public void Dispose()
{
try
{
_tasks?.CompleteAdding();
_worker.Join();
}
finally
{
_tasks?.Dispose();
}
}
protected virtual void Dispose(bool disposing)
{
if (!disposedValue)
{
if (disposing)
{
queue?.CompleteAdding();
}
disposedValue = true;
}
}
protected virtual void Dispose(bool disposing)
{
if (_disposed)
{
return;
}
if (disposing)
{
_messagesCollection?.CompleteAdding();
}
_disposed = true;
}
/// <summary>
/// This is where the parallel fun starts.
/// The BlockingCollection, and Task object are the parallel object which start the parallel processing going.
/// </summary>
public void Load()
{
// "Pipe" which contains the file names to be processed
var inputfiles = new BlockingCollection<string>();
// "Pipe" which contains the results of the loads.
var processResults = new BlockingCollection<SqlLoadResults>();
// Start feeding the file name pipe.
var readfileNames = Task.Factory.StartNew(() =>
{
try
{
if (loadDir != null)
{
foreach (var objectName in loadDir)
{
Console.WriteLine(((FileExcel.FilesCSV)(objectName)).FullName);
Console.WriteLine();
inputfiles.Add(((FileExcel.FilesCSV)(objectName)).FullName);
}
}
}
finally { inputfiles.CompleteAdding(); }
});
// Read the file name pipe, and parallel call the CSV Reader Load class and the Data Load Method
var processes = Task.Factory.StartNew(() =>
{
try
{
// A bit of dirty pool here, calling the constructor then the instance method in one go!
// This ensures that there multiple instances of the class being used on multiple threads
foreach (var loadResult in inputfiles.GetConsumingEnumerable().AsParallel().
Select(fileName => new CSVReaderLoad().LoadData(fileName, rowBufferLength, _dTables, this._countId , this._typeProcess)))
{
processResults.Add(loadResult);
}
}
finally
{
processResults.CompleteAdding();
}
});
// This "pulls" all of the results back into on IEnumerable,
// there is some fancy thread synchronisation happening here (all under the covers).
var summary = (from res in processResults.GetConsumingEnumerable()
select res).ToList();
foreach (var a in summary)
{
Console.WriteLine("{0} rows read: {1} rows returned: {2}", a.FileName, a.RowsLoaded, a.RowsReturned);
}
}
public static void InternalCancellation_CompleteAdding_Negative()
{
BlockingCollection<int> coll1 = new BlockingCollection<int>();
Task.Run(() => coll1.CompleteAdding());
//call Take.. it should wake up with an OCE. when CompleteAdding() is called.
Assert.Throws<InvalidOperationException>(() => coll1.Take());
// "InternalCancellation_WakingUpTake: an IOE should be thrown if CompleteAdding occurs during blocking Take()");
Assert.Throws<InvalidOperationException>(() => coll1.Add(1));
// "InternalCancellation_WakingUpAdd: an InvalidOpEx should be thrown if CompleteAdding occurs during blocking Add()");
Assert.Throws<InvalidOperationException>(() => coll1.TryAdd(1, 1000000)); //an indefinite wait to add.. 1000 seconds.
// "InternalCancellation_WakingUpTryAdd: an InvalidOpEx should be thrown if CompleteAdding occurs during blocking Add()");
}
public static Task ReadFilenamesAsync(string path, BlockingCollection<string> output)
{
return Task.Factory.StartNew(() =>
{
foreach (string filename in Directory.EnumerateFiles(path, "*.cs",
SearchOption.AllDirectories))
{
output.Add(filename);
ColoredConsole.WriteLine($"stage 1: added {filename}");
}
output.CompleteAdding();
}, TaskCreationOptions.LongRunning);
}
public override void Stop()
{
Common.logger.Info("Stopping Reconfiguration");
abort = true;
token?.SetCompleted();
queueItems?.CompleteAdding();
var nodesToList = new List <byte>(nodesToCheck);
nodesToList.Sort();
Common.logger.Info("Nodes left:");
Common.logger.Info(string.Join(",", nodesToList));
}
public void Run(BlockingCollection<object> input, BlockingCollection<object> output)
{
try
{
foreach (var item in input.GetConsumingEnumerable())
{
Run(new Context(item, output));
}
}
finally
{
output.CompleteAdding();
}
}
public void Dispose()
{
_analyzerLogsCollection?.CompleteAdding();
_outputHandlers?.ToList().ForEach(aoh => aoh.Value?.Dispose());
_ruleHandlers?.ToList().ForEach(rh => rh.Value?.Dispose());
_outputHandlers?.Clear();
_ruleHandlers?.Clear();
_scheduleHandlers?.Clear();
}
public static async Task Run([NotNull] Stream stream, [NotNull] Action<string> parser,
TimeSpan readTimeout, CancellationToken cancellationToken)
{
if (stream == null) throw new ArgumentNullException(nameof(stream));
if (parser == null) throw new ArgumentNullException(nameof(parser));
var parseCollection = new BlockingCollection<string>();
// create timeout cancellation token source
try
{
using (var tokenSource = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken))
using (var reader = new CancellableStreamReader(stream))
{
var localToken = tokenSource.Token;
// start parser worker thread
StartParserWorker(parseCollection, parser, localToken);
while (true)
{
// set read timeout(add epsilon time to timeout (100 msec))
tokenSource.CancelAfter(readTimeout + TimeSpan.FromTicks(10000 * 100));
// execute reading next line and await completion
var line = await reader.ReadLineAsync(localToken).ConfigureAwait(false);
localToken.ThrowIfCancellationRequested();
// disable timer
tokenSource.CancelAfter(Timeout.InfiniteTimeSpan);
// send previous line to subsequent stage
if (!String.IsNullOrWhiteSpace(line))
{
parseCollection.Add(line, localToken);
}
if (line == null)
{
break;
}
}
}
}
finally
{
// mark collection as completed and shutdown parser worker after consuming all items.
parseCollection.CompleteAdding();
}
}
private void StartThread()
{
_thread?.Abort();
_messageQueue?.CompleteAdding();
_messageQueue?.Dispose();
_messageQueue = new BlockingCollection <WebLogEntry>(_maxQueuedMessages);
_thread = new Thread(ProcessLogQueue)
{
IsBackground = true,
Name = "WebLoggerProcessor.Thread"
};
_thread.Start();
}
public void Dispose()
{
if (IsDisposed)
{
return;
}
// Note that This will cause an IOException in the read loop.
_stream?.Close();
_outboundMessages?.CompleteAdding();
_outboundMessages?.Dispose();
_outboundMessages = null;
IsDisposed = true;
}
public static async Task Waiter()
{
_groupsOutput?.CompleteAdding();
_devicesOutput?.CompleteAdding();
_signInOutput?.CompleteAdding();
_usersOutput?.CompleteAdding();
_domainsOutput?.CompleteAdding();
_applicationsOutput?.CompleteAdding();
await _groupsWriter;
await _devicesWriter;
await _signInWriter;
await _usersWriter;
await _domainsWriter;
await _applicationsWriter;
}
protected virtual void Dispose(bool disposing)
{
lock (_lockObj)
{
if (_disposed)
{
return;
}
_disposed = true;
}
if (!disposing)
{
return;
}
_messagesQueue?.CompleteAdding();
_messagesQueue?.Dispose();
_stream?.Close();
_stream?.Dispose();
}
public void Dispose()
{
//
// NB: Disposal of the blob logs blocking collection is managed by the continuation of the blob logging task, see WriteBlobLogsAsync.
//
try
{
_blobLogs?.CompleteAdding();
}
catch (ObjectDisposedException)
{
//
// NB: Any error in the WriteBlobLogsAsyncCore method will trigger disposal, including the case where recovery gets cancelled.
//
// We shouldn't fail recovery because of this, and a failure to call CompleteAdding is not an issue because the enumeration
// in WriteBlobLogsAsyncCore has exited, causing us to observe the disposed exception here.
//
}
}
public void Stop()
{
try
{
if (_workThreads == null)
{
OnShowMessage(new MessageEventArgs(Resources.OperationIsNotStarted));
return;
}
_queueInput?.CompleteAdding();
_queueOutput?.CompleteAdding();
_whaitMemoryHandle?.Set();
_output?.Flush();
_zip?.Cancel();
}
catch (Exception e)
{
OnShowMessage(new MessageEventArgs($"Error on stop: {e.Message}"));
}
}
/// <summary>
/// stops the cases queue worker
/// </summary>
public void StopRlmDbWorkersCases()
{
bcCasesQueue?.CompleteAdding();
if (ConfigFile.DropDb)
{
Thread.Sleep(5000);
rlmDb.DropDB();
RlmDbLogger.Info("\n" + string.Format("[{0:G}]: {1} database successfully dropped...\n*** END ***\n", DateTime.Now, Network.DatabaseName), Network.DatabaseName);
}
progressUpdater.Stop();
if (rlmDb.CaseWorkerQueues != null)
{
foreach (var item in rlmDb.CaseWorkerQueues)
{
item.WorkerQueues.CompleteAdding();
}
}
}
public override void Dispose()
{
if (Interlocked.Exchange(ref DisposedValue, 1) == 1)
{
return;
}
if (IsConsumer)
{
_providerService.FinishSessionsAsync(this).ContinueWith(t =>
{
if (t.IsFaulted && Logger.IsError)
{
Logger.Error("There was an error within NDM subprotocol.", t.Exception);
}
});
_receiptsRequests?.CompleteAdding();
_receiptsRequests?.Dispose();
}
if (!IsProvider)
{
return;
}
ConsumerService.FinishSessionsAsync(this).ContinueWith(t =>
{
if (t.IsFaulted && Logger.IsError)
{
Logger.Error("There was an error within NDM subprotocol.", t.Exception);
}
});
DepositApprovalsRequests?.CompleteAdding();
DepositApprovalsRequests?.Dispose();
}
public void Spike2()
{
var queue = new BlockingCollection<int>();
queue.CompleteAdding();
queue.Add(1);
}
public static void Main()
{
BlockingCollection<string> col = new BlockingCollection<string>();
Task read = Task.Run(() =>
{
while (true)
{
//Console.WriteLine("Taking");
col.Add("Removing");
}
});
Task write = Task.Run(() =>
{
while (true)
{
string s = Console.ReadLine();
if (string.IsNullOrWhiteSpace(s)) break;
Console.WriteLine("Adding");
col.Add(s);
col.CompleteAdding();
}
});
write.Wait();
}