I am running a winrt program with multiple tasks.
In the middle of running, I get the following exception:
Not enough quota is available to process this command
The stack trace is
at Windows.UI.Core.CoreDispatcher.InvokeAsync(CoreDispatcherPriority priority, InvokedHandler freeThreadedCallback, Object sender, Object context)
at System.Threading.WinRTSynchronizationContext.Post(SendOrPostCallback d, Object state)
at System.Threading.Tasks.SynchronizationContextAwaitTaskContinuation.InvokeOrPostAction(Object state)
at System.Threading.Tasks.AwaitTaskContinuation.RunInline(ContextCallback callback, Object state)
--- End of stack trace from previous location where exception was thrown ---
at System.Threading.Tasks.AwaitTaskContinuation.<ThrowAsyncIfNecessary>b__1(Object s)
at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()
Then it crashes.
Is this a problem specific to WintRT?
Is there a workaround?
According to the MSDN documentation for that error message, the fix for that error is to either "close some applications" or "increase the size of your paging file".
Given that, you might want to start by looking in Task Manager and see if your application is using a totally unreasonable amount of memory (or if some other process is). If your process has a memory leak, it might lead to this problem.
Related
I am using below code to get attachments from email. But have following issues. I am using Graph API nuget version 4.18.0
When the attachments size is larger it takes time to download. I understand that will be true but looking for ways if any optimizations can be done.
Almost every few emails processed, I am getting below errors at the above line of code mentioned, what could be the reason for this?
Appreciate any insights/suggestions to fix the issues.
Code:
inboxMessage = await graphClient
.Users[MailUser]
.MailFolders
.Inbox
.Messages
.Request()
.Top(5)
.OrderBy("receivedDateTime ASC")
.GetAsync();
foreach (var message in inboxMessage.CurrentPage.ToList())
{
//Processing messages code not copied.
//Below line of code errors with the error message reported.
var attachments = await graphClient
.Users[MailUser]
.Messages[message.Id].Attachments
.Request()
.GetAsync();
foreach (var emailobj in attachments)
{
//Processing attahments
}
}
Error When Above code is executed:
Message: System.Threading.Tasks.TaskCanceledException: A task was canceled.
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()
at Microsoft.Graph.HttpProvider.<SendRequestAsync>d__19.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()
at Microsoft.Graph.HttpProvider.<SendAsync>d__18.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()
at Microsoft.Graph.BaseRequest.<SendRequestAsync>d__40.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()
at Microsoft.Graph.BaseRequest.<SendAsync>d__34`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()
at Microsoft.Graph.MessageAttachmentsCollectionRequest.<GetAsync>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at GraphPOC.EmailMain.<GetDataAsync>d__63.MoveNext()
Category: Error
Priority: -1
EventId: 0
Severity: Error
Title:
App Domain: GraphPOC.exe
ProcessId: 988
Process Name: D:\Program Files\GraphPOC.exe
Thread Name:
Win32 ThreadId:4884
Extended Properties:
Callstack= at System.Environment.GetStackTrace(Exception e, Boolean needFileInfo)
at System.Environment.get_StackTrace()
at System.Diagnostics.TraceEventCache.get_Callstack()
at System.Diagnostics.TraceListener.WriteFooter(TraceEventCache eventCache)
at Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners.FormattedTextWriterTraceListener.TraceData(TraceEventCache eventCache, String source, TraceEventType eventType, Int32 id, Object data)
at Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners.FlatFileTraceListener.TraceData(TraceEventCache eventCache, String source, TraceEventType eventType, Int32 id, Object data)
at Microsoft.Practices.EnterpriseLibrary.Logging.LogSource.TraceData(TraceEventType eventType, Int32 id, LogEntry logEntry, TraceListenerFilter traceListenerFilter)
at Microsoft.Practices.EnterpriseLibrary.Logging.LogWriter.ProcessLog(LogEntry log)
at Microsoft.Practices.EnterpriseLibrary.Logging.LogWriter.Write(LogEntry log)
at GraphPOC.EmailMain.<GetDataAsync>d__63.MoveNext()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run()
at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(Action action, Boolean allowInlining, Task& currentTask)
at System.Threading.Tasks.Task.FinishContinuations()
at System.Threading.Tasks.Task`1.TrySetCanceled(CancellationToken tokenToRecord, Object cancellationException)
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException(Exception exception)
at Microsoft.Graph.MessageAttachmentsCollectionRequest.<GetAsync>d__3.MoveNext()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run()
at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(Action action, Boolean allowInlining, Task& currentTask)
at System.Threading.Tasks.Task.FinishContinuations()
at System.Threading.Tasks.Task`1.TrySetCanceled(CancellationToken tokenToRecord, Object cancellationException)
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException(Exception exception)
at Microsoft.Graph.BaseRequest.<SendAsync>d__34`1.MoveNext()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run()
at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(Action action, Boolean allowInlining, Task& currentTask)
at System.Threading.Tasks.Task.FinishContinuations()
at System.Threading.Tasks.Task`1.TrySetCanceled(CancellationToken tokenToRecord, Object cancellationException)
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException(Exception exception)
at Microsoft.Graph.BaseRequest.<SendRequestAsync>d__40.MoveNext()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run()
at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(Action action, Boolean allowInlining, Task& currentTask)
at System.Threading.Tasks.Task.FinishContinuations()
at System.Threading.Tasks.Task`1.TrySetCanceled(CancellationToken tokenToRecord, Object cancellationException)
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException(Exception exception)
at Microsoft.Graph.HttpProvider.<SendAsync>d__18.MoveNext()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run()
at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(Action action, Boolean allowInlining, Task& currentTask)
at System.Threading.Tasks.Task.FinishContinuations()
at System.Threading.Tasks.Task`1.TrySetCanceled(CancellationToken tokenToRecord, Object cancellationException)
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException(Exception exception)
at Microsoft.Graph.HttpProvider.<SendRequestAsync>d__19.MoveNext()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run()
at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(Action action, Boolean allowInlining, Task& currentTask)
at System.Threading.Tasks.Task.FinishContinuations()
at System.Threading.Tasks.Task`1.TrySetCanceled(CancellationToken tokenToRecord, Object cancellationException)
at System.Threading.Tasks.Task`1.TrySetCanceled(CancellationToken tokenToRecord)
at System.Threading.Tasks.TaskCompletionSource`1.TrySetCanceled(CancellationToken cancellationToken)
at System.Net.Http.HttpClient.SetTaskCanceled(HttpRequestMessage request, CancellationTokenSource cancellationTokenSource, TaskCompletionSource`1 tcs)
at System.Net.Http.HttpClient.<>c__DisplayClass59_0.<StartContentBuffering>b__0(Task contentTask)
at System.Threading.Tasks.Task.Execute()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot)
at System.Threading.Tasks.Task.ExecuteEntry(Boolean bPreventDoubleExecution)
at System.Threading.Tasks.ThreadPoolTaskScheduler.TryExecuteTaskInline(Task task, Boolean taskWasPreviouslyQueued)
at System.Threading.Tasks.TaskScheduler.TryRunInline(Task task, Boolean taskWasPreviouslyQueued)
at System.Threading.Tasks.TaskContinuation.InlineIfPossibleOrElseQueue(Task task, Boolean needsProtection)
at System.Threading.Tasks.Task.FinishContinuations()
at System.Threading.Tasks.Task.Finish(Boolean bUserDelegateExecuted)
at System.Threading.Tasks.Task`1.TrySetException(Object exceptionObject)
at System.Threading.Tasks.TaskCompletionSource`1.TrySetException(Exception exception)
at System.Net.Http.HttpContent.<>c__DisplayClass21_0.<LoadIntoBufferAsync>b__0(Task copyTask)
at System.Threading.Tasks.Task.Execute()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot)
at System.Threading.Tasks.Task.ExecuteEntry(Boolean bPreventDoubleExecution)
at System.Threading.Tasks.ThreadPoolTaskScheduler.TryExecuteTaskInline(Task task, Boolean taskWasPreviouslyQueued)
at System.Threading.Tasks.TaskScheduler.TryRunInline(Task task, Boolean taskWasPreviouslyQueued)
at System.Threading.Tasks.TaskContinuation.InlineIfPossibleOrElseQueue(Task task, Boolean needsProtection)
at System.Threading.Tasks.Task.FinishContinuations()
at System.Threading.Tasks.Task.Finish(Boolean bUserDelegateExecuted)
at System.Threading.Tasks.Task`1.TrySetException(Object exceptionObject)
at System.Threading.Tasks.TaskCompletionSource`1.TrySetException(Exception exception)
at System.Net.Http.StreamToStreamCopy.BufferReadCallback(IAsyncResult ar)
at System.IO.Compression.DeflateStreamAsyncResult.Complete(Object result)
at System.IO.Compression.DeflateStream.ReadCallback(IAsyncResult baseStreamResult)
at System.Net.LazyAsyncResult.Complete(IntPtr userToken)
at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
at System.Net.ChunkParser.ReadCallback(IAsyncResult ar)
at System.Net.LazyAsyncResult.Complete(IntPtr userToken)
at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
at System.Net.FixedSizeReader.ReadCallback(IAsyncResult transportResult)
at System.Net.LazyAsyncResult.Complete(IntPtr userToken)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Net.ContextAwareResult.Complete(IntPtr userToken)
at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
at System.Net.Sockets.BaseOverlappedAsyncResult.CompletionPortCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* nativeOverlapped)
at System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* pOVERLAP)
One option could be that you only fetch the Id's of the attachments, iterate over them and download every attachment individually. That requires more requests but every request takes less time. Basically split one big request into multiple smaller requests.
I have what seems a really weird situation. I have some async/await code which uses RestSharp to get some data off several rest APIs (same API hosted on different URLs) which a kind of directory service returns.
Now the problem: one of the APIs returned by said directory service is somehow "private" and initiating a SSL connection to it fails. Fiddler captures the following response:
HTTP/1.1 200 Connection Established
FiddlerGateway: Direct
StartTime: 19:13:11.117
Connection: close
fiddler.network.https> HTTPS handshake to foo.bar.com failed. System.IO.IOException The handshake failed due to an unexpected packet format.
I would ideally like to skip getting data from this API in case this happens and just move on. However, it turns out that a try/catch doesn't help! A NullReferenceException is thrown but even a generic try/catch doesn't manage to catch it.
The code is pretty straightforward:
try
{
await GetDataAsync(url);
}
catch
{
// never gets called
}
and
private async Task<List<Data>> GetDataAsync(string url)
{
var request = new RestRequest("/foo");
var restClient = new RestClient(url);
var response = await restClient.ExecuteTaskAsync<List<Data>>(request); // <-- this throws
return response.Data;
}
I've extracted the code in a library and tried it both in a Console app and in a WPF app, same result, catch block never gets entered.
Any ideas?
l.e.: as requested, here's the full exception stack trace
Unhandled Exception: System.NullReferenceException: Object reference not set to
an instance of an object.
at RestSharp.RestClient.<>c__DisplayClass15`1.<ExecuteTaskAsync>b__12(IRestResponse`1 response, RestRequestAsyncHandle _)
at RestSharp.RestClient.DeserializeResponse[T](IRestRequest request, Action`2 callback, IRestResponse response, RestRequestAsyncHandle asyncHandle)
at RestSharp.RestClient.<>c__DisplayClassa`1.<ExecuteAsync>b__9(IRestResponse response, RestRequestAsyncHandle asyncHandle)
at RestSharp.RestClient.ProcessResponse(IRestRequest request, HttpResponse httpResponse, RestRequestAsyncHandle asyncHandle, Action`2 callback)
at RestSharp.RestClient.<>c__DisplayClass3.<ExecuteAsync>b__0(HttpResponse r)
at RestSharp.Http.ExecuteCallback(HttpResponse response, Action`1 callback)
at RestSharp.Http.ResponseCallback(IAsyncResult result, Action`1 callback)
at RestSharp.Http.<>c__DisplayClass3.<GetStyleMethodInternalAsync>b__1(IAsyncResult result)
at System.Net.LazyAsyncResult.Complete(IntPtr userToken)
at System.Net.ContextAwareResult.CompleteCallback(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Net.ContextAwareResult.Complete(IntPtr userToken)
at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
at System.Net.HttpWebRequest.SetResponse(Exception E)
at System.Net.HttpWebRequest.CheckWriteSideResponseProcessing()
at System.Net.ConnectStream.ProcessWriteCallDone(ConnectionReturnResult returnResult)
at System.Net.HttpWebRequest.WriteCallDone(ConnectStream stream, ConnectionReturnResult returnResult)
at System.Net.ConnectStream.CallDone(ConnectionReturnResult returnResult)
at System.Net.ConnectStream.IOError(Exception exception, Boolean willThrow)
at System.Net.ConnectStream.HandleWriteHeadersException(Exception e, WebExceptionStatus error)
at System.Net.ConnectStream.WriteHeadersCallback(IAsyncResult ar)
at System.Net.LazyAsyncResult.Complete(IntPtr userToken)
at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
at System.Net.TlsStream.ResumeIOWorker(Object result)
at System.Net.TlsStream.WakeupPendingIO(IAsyncResult ar)
at System.Net.LazyAsyncResult.Complete(IntPtr userToken)
at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
at System.Net.Security.SslState.FinishHandshake(Exception e, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.PartialFrameCallback(AsyncProtocolRequest asyncRequest)
at System.Net.AsyncProtocolRequest.CompleteRequest(Int32 result)
at System.Net.FixedSizeReader.CheckCompletionBeforeNextRead(Int32 bytes)
at System.Net.FixedSizeReader.ReadCallback(IAsyncResult transportResult)
at System.Net.LazyAsyncResult.Complete(IntPtr userToken)
at System.Net.ContextAwareResult.CompleteCallback(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Net.ContextAwareResult.Complete(IntPtr userToken)
at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
at System.Net.Sockets.BaseOverlappedAsyncResult.CompletionPortCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* nativeOverlapped)
at System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32errorCode, UInt32 numBytes, NativeOverlapped* pOVERLAP)
This seems to be a bug in RestSharp. I'm not sure you can do anything about it without modifying RestSharp's source.
I get the following message in the eventlog for my service:
Exception: System.NullReferenceException
Message: Object reference not set to an instance of an object.
StackTrace:
at log4net.Appender.RollingFileAppender.AdjustFileBeforeAppend() in C:\Projects\Framework\log4net-1.2.11\src\Appender\RollingFileAppender.cs:line 609
at log4net.Appender.RollingFileAppender.Append(LoggingEvent loggingEvent) in C:\Projects\Framework\log4net-1.2.11\src\Appender\RollingFileAppender.cs:line 562
at LSports.Common.Logger.Appenders.AsynchronousFileAppender.LogMessages() in d:\tfsV3\Dev\Common\Logger\LSports.Common.Logger\Appenders\AsynchronousFileAppender .cs:line 63
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
I use the log4net in more projects in the system beside the webservice and it just getting randomly stuck there too.
I looked in source file of log4net where the exception occurs and it happens when it tries to perform file rolling
if (m_rollSize)
{
/* this line*/ if ((File != null) && ((CountingQuietTextWriter)QuietWriter).Count >= m_maxFileSize)
{
RollOverSize();
}
}
what could be causing this? it just happens totally random
After a lot of searching i finally found the problem, the log4net actually hangs because it tries to print error to console, and my application is hidden so it fails to print to the console and just stops the thread that called the log4net.
Hi I 've a little question,
I'm using socket and I find many situation of infinite recursion see source: http://pastebin.com/Cbd2Z2uE
the problem is this:
private static void ReceiveCallback(IAsyncResult ar)
{
....
// receive again
socket.BeginReceive(state.Buffer,
0,
StateObject.BufferSize,
0,
ReceiveCallback,
state);
....
}
So we have an async function that is called again in a recursive way. Here We have a problem with the stack?
To be more clear, this situation is ok and recursion is fine, the problem and question is:
in this case can I have a problem of stackoverflow?
thanks
You are not recursing (or in danger or recursing). You are simply scheduling a callback to be executed when an IO competion port receives data for you to process (checked source code to see this). This will not happen while your function is running on the current thread because the very same thread has to check for message on IO port via polling or another worker thread will run your function all together. In either case you are not recursing or in danger of recusing so the stack will not blow up (socket.BeginReceive should return immediatly & will not call your function in it).
I believe you are looking at scenario 14 shown on this page but it may be the previous scenario since your console app has a message pump. But the bottom line is that there is no actual functions recursing in your application (or supporitng OS framework functionality used by it).
Your ReceiveCallback is called by framework code unless you call it directly.
BeginReceive stores specified delegate as callback function, and it doesn't calls the delegate at that time.
For example, I added some codes to get stack trace:
private static void ReceiveCallback(IAsyncResult ar)
{
Console.WriteLine(Environment.StackTrace);
// retrieve the state and socket
and gets:
at System.Environment.GetStackTrace(Exception e, Boolean needFileInfo)
at System.Environment.get_StackTrace()
at Program.ReceiveCallback(IAsyncResult ar) in r:\Temp\LINQPad\aqwfvqfb\query_ettlka.cs:line 102
at System.Net.LazyAsyncResult.Complete(IntPtr userToken)
at System.Net.ContextAwareResult.CompleteCallback(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Net.ContextAwareResult.Complete(IntPtr userToken)
at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
at System.Net.Sockets.BaseOverlappedAsyncResult.CompletionPortCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* nativeOverlapped)
at System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* pOVERLAP)
And It's shown even you call BeginReceive in ReceiveCallback.
I am using VS 2012 and set the target framework 4.0.
public async Task<HttpResponseMessage> GetResponse(Uri url)
{
this.httpClient.DefaultRequestHeaders.Accept.Clear();
HttpResponseMessage response = await this.httpClient.GetAsync(url);
response.EnsureSuccessStatusCode();
}
Error:
System.NullReferenceException was unhandled
HResult=-2147467261
Message=Object reference not set to an instance of an object.
Source=Microsoft.CompilerServices.AsyncTargetingPack.Net4
StackTrace:
Server stack trace: at System.Web.ThreadContext.AssociateWithCurrentThread(Boolean setImpersonationContext) at System.Web.HttpApplication.OnThreadEnterPrivate(Boolean setImpersonationContext) at System.Web.LegacyAspNetSynchronizationContext.CallCallbackPossiblyUnderLock(SendOrPostCallback callback, Object state) at System.Web.LegacyAspNetSynchronizationContext.CallCallback(SendOrPostCallback callback, Object state) at System.Web.LegacyAspNetSynchronizationContext.Post(SendOrPostCallback callback, Object state) at System.Runtime.CompilerServices.TaskAwaiter.<>c__DisplayClassa.<OnCompletedInternal>b__0(Task param0)
Exception rethrown at [0]: at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<ThrowAsync>b__1(Object state)
at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()
InnerException:
-------------------------------------------------
I have installed "Microsoft.CompilerServices.AsyncTargetingPack" from NuGet, but still getting this error. Any suggestion.