public async IAsyncEnumerable <Frame <T> > DeserializeAsync(Stream stream, [EnumeratorCancellation] CancellationToken token = default)
{
Interlocked.Increment(ref ParallelGatekeeperSingleton.wrapperDepth);
try
{
BatchWithBufferWriters currentBatch = new BatchWithBufferWriters();
int currentBatchTotalSize = 0;
while (TryReadHeader(stream, out int itemLength))
{
if (currentBatchTotalSize + itemLength > desiredBatchSize_bytes && currentBatchTotalSize > 0)
{
// send prev batch
foreach (Frame <T> t in IterateOutputBatch(fifow.AddWorkItem(currentBatch, token)))
{
yield return(t);
}
currentBatchTotalSize = 0;
}
if (currentBatchTotalSize == 0)
{
currentBatch.concatenatedBodies = objPoolBufferWriterBodies.Get();
currentBatch.lengths = objPoolBufferWriterBodyLengths.Get();
}
// read element from stream and add to batch
currentBatch.lengths.GetSpan(1)[0] = itemLength;
currentBatch.lengths.Advance(1);
int totRead = await stream.ReadAsync(currentBatch.concatenatedBodies.GetMemory(itemLength).Slice(0, itemLength), token).ConfigureAwait(false);
if (totRead != itemLength)
{
throw new StreamSerializationException($"Unexpected number of bytes read from stream ({totRead}). Expected {itemLength}");
}
currentBatch.concatenatedBodies.Advance(itemLength);
currentBatchTotalSize += itemLength;
}
if (currentBatchTotalSize > 0) // send unfinished batch
{
foreach (Frame <T> t in IterateOutputBatch(fifow.AddWorkItem(currentBatch, token)))
{
yield return(t);
}
}
foreach (Frame <T> t in IterateOutputBatch(fifow.Flush(token)))
{
yield return(t);
}
}
finally
{
Interlocked.Decrement(ref ParallelGatekeeperSingleton.wrapperDepth);
}
}
public void AddWorkItem_ItemsProcessed(int totItems, int totThreads, int maxQueuedItems)
{
MockWorker mw = new MockWorker();
CancellationTokenSource ts = new CancellationTokenSource();
List <MockWorkOut> doneWork = new List <MockWorkOut>();
var cfg = GetConfig(totThreads, maxQueuedItems);
using (FIFOWorker <MockWorkIn, MockWorkOut> fifo = new FIFOWorker <MockWorkIn, MockWorkOut>(cfg, mw.DoMockWork_Simple))
{
foreach (int inputIx in Enumerable.Range(1, totItems))
{
foreach (var outItem in fifo.AddWorkItem(new MockWorkIn(inputIx), ts.Token))
{
doneWork.Add(outItem);
}
}
foreach (var outItem in fifo.Flush(ts.Token))
{
doneWork.Add(outItem);
}
}
Assert.AreEqual(Enumerable.Range(1, totItems), doneWork.Select(f => f.originalInputItem.ix));
Assert.AreEqual(Enumerable.Range(1, totItems), mw.doneWork.Where(f => !f.Item1).OrderBy(f => f.Item2.ix).Select(f => f.Item2.ix));
}
public void AddWorkItem_OneItemProcessed()
{
MockWorker mw = new MockWorker();
CancellationTokenSource ts = new CancellationTokenSource();
List <MockWorkOut> doneWork = new List <MockWorkOut>();
int inputIx = 1;
int totThreads = 1;
int maxQueuedItems = 1;
var cfg = GetConfig(totThreads, maxQueuedItems);
using (FIFOWorker <MockWorkIn, MockWorkOut> fifo = new FIFOWorker <MockWorkIn, MockWorkOut>(cfg, mw.DoMockWork_Simple))
{
foreach (var outItem in fifo.AddWorkItem(new MockWorkIn(inputIx), ts.Token).Concat(fifo.Flush(ts.Token)))
{
doneWork.Add(outItem);
}
}
Assert.AreEqual(1, doneWork.Count);
Assert.AreEqual(inputIx, doneWork.First().originalInputItem.ix);
Assert.AreEqual(1, mw.doneWork.Count);
Assert.AreEqual(false, mw.doneWork.First().Item1);
Assert.AreEqual(inputIx, mw.doneWork.First().Item2.ix);
Assert.AreEqual(inputIx, mw.doneWork.First().Item3.originalInputItem.ix);
}
public void AddWorkItem_Cancels(int totThreads)
{
MockWorker mw = new MockWorker();
CancellationTokenSource ts = new CancellationTokenSource();
List <MockWorkOut> doneWork = new List <MockWorkOut>();
var cfg = new FIFOWorkerConfig(totThreads);
FIFOWorker <MockWorkIn, MockWorkOut> fifo = new FIFOWorker <MockWorkIn, MockWorkOut>(cfg, mw.DoMockWorkBlocking);
int countTask = fifo.AddWorkItem(new MockWorkIn(1), ts.Token).Count();
mw.TriggerOnBlockedWork(() => ts.Cancel());
Assert.Throws <TaskCanceledException>(() =>
{
try
{
fifo.Dispose();
}
catch (AggregateException ag)
{
throw ag.GetBaseException();
}
});
Assert.AreEqual(1, mw.doneWork.Count(f => f.Item1));
Assert.AreEqual(1, mw.doneWork.Count());
}
public void Dispose_ExceptionInWorkerPropagates(int totThreads)
{
TaskCompletionSource <object> taskBlocker1 = new TaskCompletionSource <object>();
MockWorkOut DoMockWorkBlocking(MockWorkIn work, CancellationToken token)
{
taskBlocker1.Task.Wait();
throw new MockException();
}
CancellationTokenSource ts = new CancellationTokenSource();
List <MockWorkOut> doneWork = new List <MockWorkOut>();
var cfg = new FIFOWorkerConfig(totThreads);
FIFOWorker <MockWorkIn, MockWorkOut> fifo = new FIFOWorker <MockWorkIn, MockWorkOut>(cfg, DoMockWorkBlocking);
int count = fifo.AddWorkItem(new MockWorkIn(1), ts.Token).Count();
Assert.Throws <MockException>(() =>
{
try
{
taskBlocker1.SetResult(null);
fifo.Dispose();
}
catch (AggregateException ag)
{
throw ag.GetBaseException();
}
});
}
public void Dispose_CancelsPendingTasks(int totThreads)
{
TaskCompletionSource <object> taskBlocker1 = new TaskCompletionSource <object>();
TaskCompletionSource <object> taskBlocker2 = new TaskCompletionSource <object>();
bool completed = false;
int totBlockCalled = 0;
MockWorkOut DoMockWorkBlocking(MockWorkIn work, CancellationToken token)
{
Interlocked.Increment(ref totBlockCalled);
taskBlocker2.SetResult(null);
taskBlocker1.Task.Wait();
Task.Delay(1, token).Wait();
completed = true;
return(new MockWorkOut(work));
}
CancellationTokenSource ts = new CancellationTokenSource();
List <MockWorkOut> doneWork = new List <MockWorkOut>();
var cfg = new FIFOWorkerConfig(totThreads);
FIFOWorker <MockWorkIn, MockWorkOut> fifo = new FIFOWorker <MockWorkIn, MockWorkOut>(cfg, DoMockWorkBlocking);
int count = fifo.AddWorkItem(new MockWorkIn(1), ts.Token).Count();
taskBlocker2.Task.Wait();
taskBlocker1.SetResult(null);
Assert.AreEqual(1, totBlockCalled);
Assert.AreEqual(0, count);
Assert.DoesNotThrow(fifo.Dispose);
Assert.AreEqual(true, completed);
}
public async IAsyncEnumerable <T> DeserializeAsync(Stream stream, [EnumeratorCancellation] CancellationToken token = default)
{
BatchIn currentBatch = new BatchIn();
int currentBatchTotalSize = 0;
int currentBatchTotalElements = 0;
while (TryReadHeader(stream, out int itemLength))
{
if (currentBatchTotalSize + itemLength > desiredBatchSize_bytes && currentBatchTotalElements > 0)
{
// send prev batch
foreach (T t in IterateOutputBatch(fifow.AddWorkItem(currentBatch, token)))
{
yield return(t);
}
currentBatchTotalSize = 0;
currentBatchTotalElements = 0;
}
if (currentBatchTotalElements == 0)
{
currentBatch.concatenatedBodies = objPoolBufferWriterSerializedBatch.Get();
currentBatch.Lengths = objPoolList.Get();
}
await BufferFromStreamAsync(stream, currentBatch.concatenatedBodies, itemLength, token).ConfigureAwait(false);
currentBatchTotalSize += itemLength;
currentBatchTotalElements++;
currentBatch.Lengths.Add(itemLength);
}
if (currentBatchTotalElements > 0) // send unfinished batch
{
foreach (T t in IterateOutputBatch(fifow.AddWorkItem(currentBatch, token)))
{
yield return(t);
}
}
foreach (T t in IterateOutputBatch(fifow.Flush(token)))
{
yield return(t);
}
}
private async Task CompleteBatch(bool flushBatch, CancellationToken token)
{
if (flushBatch || currentBatch.Count >= desiredBatchSize)
{
foreach (var bw in fifow.AddWorkItem(currentBatch, token))
{
await BatchToStreamAsync(bw, token).ConfigureAwait(false);
}
currentBatch = objPoolList.Get();
desiredBatchSize = batchEstimator.RecomendedBatchSize;
}
}
public void Dispose_ThrowsOnCancelledTasks(int totThreads)
{
TaskCompletionSource <object> taskBlocker1 = new TaskCompletionSource <object>();
TaskCompletionSource <object> taskBlocker2 = new TaskCompletionSource <object>();
bool completed = false;
int totBlockCalled = 0;
MockWorkOut DoMockWorkBlocking(MockWorkIn work, CancellationToken token)
{
Interlocked.Increment(ref totBlockCalled);
taskBlocker2.SetResult(null);
taskBlocker1.Task.Wait();
Task.Delay(1, token).Wait();
completed = true;
return(new MockWorkOut(work));
}
CancellationTokenSource ts = new CancellationTokenSource();
List <MockWorkOut> doneWork = new List <MockWorkOut>();
var cfg = new FIFOWorkerConfig(totThreads);
FIFOWorker <MockWorkIn, MockWorkOut> fifo = new FIFOWorker <MockWorkIn, MockWorkOut>(cfg, DoMockWorkBlocking);
int count = fifo.AddWorkItem(new MockWorkIn(1), ts.Token).Count();
taskBlocker2.Task.Wait();
ts.Cancel();
Assert.Throws <TaskCanceledException>(() =>
{
try
{
taskBlocker1.SetResult(null);
fifo.Dispose();
}
catch (AggregateException ag)
{
throw ag.GetBaseException();
}
});
Assert.AreEqual(1, totBlockCalled);
Assert.AreEqual(0, count);
Assert.AreEqual(false, completed);
}
public void Serialize(ref MessagePackWriter writer, TFrameList value, MessagePackSerializerOptions options)
{
if (value == null)
{
writer.WriteNil();
return;
}
Interlocked.Increment(ref ParallelGatekeeperSingleton.wrapperDepth);
try
{
FrameFormatterSerializationOptions frameOptions = options.GetOptionParams();
if (frameOptions.FIFOWorkerConfig.MaxConcurrentTasks < 1 || ParallelGatekeeperSingleton.wrapperDepth != 1)
{
SerializeSynchronous(ref writer, value, options);
return;
}
int count = value.Count;
writer.WriteArrayHeader(count);
BatchSizeEstimator batchEstimator = new BatchSizeEstimator(frameOptions.BatchSizeEstimatorConfig);
IMessagePackFormatter <T> formatterT = options.Resolver.GetFormatterWithVerify <T>();
bool isOldSpec = writer.OldSpec;
BatchWithBufferWriters ProcessItems(ArraySegment <Frame <T> > batch, CancellationToken token)
{
BatchWithBufferWriters batchOut = new BatchWithBufferWriters();
batchOut.concatenatedBodies = objPoolBufferWriterBodies.Get();
batchOut.lengths = objPoolBufferWriterBodyLengths.Get();
MessagePackWriter writerBody = new MessagePackWriter(batchOut.concatenatedBodies)
{
OldSpec = isOldSpec, CancellationToken = token
};
var spanIn = batch.AsSpan();
int prevWrittenBytesCount = 0;
int sumLen = 0;
for (int ix = 0; ix < spanIn.Length; ix++)
{
formatterT.Serialize(ref writerBody, spanIn[ix], options);
writerBody.Flush();
int currWrittenBytesCount = batchOut.concatenatedBodies.WrittenCount;
int objLen = currWrittenBytesCount - prevWrittenBytesCount;
prevWrittenBytesCount = currWrittenBytesCount;
batchOut.lengths.GetSpan(1)[0] = objLen;
batchOut.lengths.Advance(1);
sumLen += objLen;
}
if (spanIn.Length > 0)
{
batchEstimator.UpdateEstimate((float)sumLen / (float)spanIn.Length); // update with avg instead of updating for every loop item. It's not exact, but it's faster
}
return(batchOut);
}
ListFrameWrapper valueWrapper = GetTFrameListWrapper(value);
Frame <T>[] valueArray = valueWrapper.AsFrameArray();
using (var fifow = new FIFOWorker <ArraySegment <Frame <T> >, BatchWithBufferWriters>(frameOptions.FIFOWorkerConfig, ProcessItems))
{
int i = 0;
while (i < count)
{
int batchSize = Math.Min(count - i, batchEstimator.RecomendedBatchSize);
if (batchSize <= 0)
{
throw new StreamSerializationException($"Invalid batch sequence length: {batchSize}");
}
ArraySegment <Frame <T> > sourceSegment = new ArraySegment <Frame <T> >(valueArray, i, batchSize);
foreach (BatchWithBufferWriters batchOutput in fifow.AddWorkItem(sourceSegment, writer.CancellationToken))
{
BatchToStream(ref writer, batchOutput);
}
i += batchSize;
}
foreach (BatchWithBufferWriters batchOutput in fifow.Flush(writer.CancellationToken))
{
BatchToStream(ref writer, batchOutput);
}
}
}
finally
{
Interlocked.Decrement(ref ParallelGatekeeperSingleton.wrapperDepth);
}
}
