private void DispatchForAutomatic(int desiredItems = 1)
{
var readerTask = new Task(async() => {
bool more = true;
while (more)
{
var result = await _automaticAsyncQueue.AcquireReadAsync(desiredItems, CancellationToken.None);
result.Visit(
succeeded => {
LogEvent logEvent = null;
if (succeeded is AcquireReadSucceeded <LogEvent> acquireReader)
{
logEvent = acquireReader.Items[0];
Dispatch(logEvent);
}
if (succeeded.ItemCount < 1)
{
more = false;
}
_automaticAsyncQueue.ReleaseRead(succeeded.ItemCount);
return(logEvent);
},
cancelled => {
InternalLogger.WriteLine("Dispatching task has been cancelled.");
return(null);
},
faulted => {
InternalLogger.WriteLine(
$@"Thrown an exception when dispatch log event from async queue:{Environment.NewLine}{faulted.Exception.ToUnwrappedString()}",
faulted.Exception);
return(null);
});
}
});
readerTask.Start();
}
private async Task SimpleQueueTestAsync()
{
AsyncQueue <int> queue = new AsyncQueue <int>(11);
Func <Task> producer = async delegate()
{
#region
for (int i = 0; i < 20; ++i)
{
System.Diagnostics.Debug.WriteLine("Acquiring write...");
AcquireWriteResult result = await queue.AcquireWriteAsync(1, CancellationToken.None);
result.Visit <DBNull>
(
new Func <AcquireWriteSucceeded, DBNull>
(
succeeded =>
{
System.Diagnostics.Debug.WriteLine("Write-acquire succeeded, offset " + succeeded.Offset + ", acquired " + succeeded.ItemCount + " spaces");
Assert.AreEqual(1, succeeded.ItemCount);
if (succeeded.ItemCount >= 1)
{
System.Diagnostics.Debug.WriteLine("Releasing write (1)...");
queue.ReleaseWrite(i);
}
else
{
System.Diagnostics.Debug.WriteLine("Releasing write (0)...");
queue.ReleaseWrite();
}
return(DBNull.Value);
}
),
new Func <AcquireWriteCancelled, DBNull>
(
cancelled =>
{
throw new OperationCanceledException();
}
),
new Func <AcquireWriteFaulted, DBNull>
(
faulted =>
{
throw faulted.Exception;
}
)
);
}
System.Diagnostics.Debug.WriteLine("Writing EOF...");
queue.WriteEof();
#endregion
};
Func <Task> consumer = async delegate()
{
#region
bool more = true;
while (more)
{
System.Diagnostics.Debug.WriteLine("Acquiring read...");
const int ACQUIRE_COUNT = 3;
AcquireReadResult result = await queue.AcquireReadAsync(ACQUIRE_COUNT, CancellationToken.None);
result.Visit <DBNull>
(
new Func <AcquireReadSucceeded, DBNull>
(
succeeded =>
{
System.Diagnostics.Debug.WriteLine("Read-acquire succeeded, offset " + succeeded.Offset + ", acquired " + succeeded.ItemCount + " items");
Assert.IsInstanceOfType(succeeded, typeof(AcquireReadSucceeded <int>));
if (succeeded is AcquireReadSucceeded <int> )
{
AcquireReadSucceeded <int> succeeded2 = (AcquireReadSucceeded <int>)succeeded;
System.Diagnostics.Debug.WriteLine("{ " + string.Join(", ", succeeded2.Items) + " }");
}
if (succeeded.ItemCount < ACQUIRE_COUNT)
{
System.Diagnostics.Debug.WriteLine("Setting \"more\" flag to false...");
more = false;
}
System.Diagnostics.Debug.WriteLine("Releasing read (" + succeeded.ItemCount + ")...");
queue.ReleaseRead(succeeded.ItemCount);
return(DBNull.Value);
}
),
new Func <AcquireReadCancelled, DBNull>
(
cancelled =>
{
throw new OperationCanceledException();
}
),
new Func <AcquireReadFaulted, DBNull>
(
faulted =>
{
throw faulted.Exception;
}
)
);
}
#endregion
};
Task tProducer = Task.Run(producer);
Task tConsumer = Task.Run(consumer);
await Task.WhenAll(tProducer, tConsumer);
}
private async Task SimpleQueueTestAsync()
{
AsyncQueue<int> queue = new AsyncQueue<int>(11);
Func<Task> producer = async delegate()
{
#region
for (int i = 0; i < 20; ++i)
{
System.Diagnostics.Debug.WriteLine("Acquiring write...");
AcquireWriteResult result = await queue.AcquireWriteAsync(1, CancellationToken.None);
result.Visit<DBNull>
(
new Func<AcquireWriteSucceeded, DBNull>
(
succeeded =>
{
System.Diagnostics.Debug.WriteLine("Write-acquire succeeded, offset " + succeeded.Offset + ", acquired " + succeeded.ItemCount + " spaces");
Assert.AreEqual(1, succeeded.ItemCount);
if (succeeded.ItemCount >= 1)
{
System.Diagnostics.Debug.WriteLine("Releasing write (1)...");
queue.ReleaseWrite(i);
}
else
{
System.Diagnostics.Debug.WriteLine("Releasing write (0)...");
queue.ReleaseWrite();
}
return DBNull.Value;
}
),
new Func<AcquireWriteCancelled, DBNull>
(
cancelled =>
{
throw new OperationCanceledException();
}
),
new Func<AcquireWriteFaulted, DBNull>
(
faulted =>
{
throw faulted.Exception;
}
)
);
}
System.Diagnostics.Debug.WriteLine("Writing EOF...");
queue.WriteEof();
#endregion
};
Func<Task> consumer = async delegate()
{
#region
bool more = true;
while (more)
{
System.Diagnostics.Debug.WriteLine("Acquiring read...");
const int ACQUIRE_COUNT = 3;
AcquireReadResult result = await queue.AcquireReadAsync(ACQUIRE_COUNT, CancellationToken.None);
result.Visit<DBNull>
(
new Func<AcquireReadSucceeded, DBNull>
(
succeeded =>
{
System.Diagnostics.Debug.WriteLine("Read-acquire succeeded, offset " + succeeded.Offset + ", acquired " + succeeded.ItemCount + " items");
Assert.IsInstanceOfType(succeeded, typeof(AcquireReadSucceeded<int>));
if (succeeded is AcquireReadSucceeded<int>)
{
AcquireReadSucceeded<int> succeeded2 = (AcquireReadSucceeded<int>)succeeded;
System.Diagnostics.Debug.WriteLine("{ " + string.Join(", ", succeeded2.Items) + " }");
}
if (succeeded.ItemCount < ACQUIRE_COUNT)
{
System.Diagnostics.Debug.WriteLine("Setting \"more\" flag to false...");
more = false;
}
System.Diagnostics.Debug.WriteLine("Releasing read (" + succeeded.ItemCount + ")...");
queue.ReleaseRead(succeeded.ItemCount);
return DBNull.Value;
}
),
new Func<AcquireReadCancelled, DBNull>
(
cancelled =>
{
throw new OperationCanceledException();
}
),
new Func<AcquireReadFaulted, DBNull>
(
faulted =>
{
throw faulted.Exception;
}
)
);
}
#endregion
};
Task tProducer = Task.Run(producer);
Task tConsumer = Task.Run(consumer);
await Task.WhenAll(tProducer, tConsumer);
}