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Questions tagged [synclock]

SyncLock is the VB.NET keyword for its locking statement.

SyncLock is the VB.NET keyword for its locking statement, allowing any non-structure type to be locked by a transaction.

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Do I need to thread lock value types (Boolean in particular)

I know I can't use lock (SyncLock) on a value type, as explained in this article: http://msdn.microsoft.com/msdnmag/issues/03/01/NET/ But my question is, does this mean I don't need to? or do I need to wrap the Boolean within an object, so it can be…
Ben
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SyncLock for AsyncOperation

I have a method Update() that's called by a AsyncOperation through .Post(). When I place a MessageBox in that function, I get multiple messageboxes, and I'm trying to understand why that happens. The Messagebox should halt execution of Update()…
Maestro
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Remoting cache object

I'm using the following code in a singleton remoting object MBRO. This function is only called on the server side. ''' ''' Return a cached DataCentricObject ''' ''' CodingBarfield '''…
CodingBarfield
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How to correctly use synclock to only allow one call to a function at a time

I have code that sends a ping to a batch of computers, and opens a VNC session to any that respond that they are online. The pings are sent in a parallel.foreach loop, and an event is raised when a reply is receieved. Despite putting a synclock…
Peter Page
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How does SyncLock Works in .Net

I have a List of objects shared by multiple threads, it sometimes generate IndexOutOfRangeException when trying to Clear. While searching for solution I found that I should use SyncLock while accessing the List. But my question if what is the…
Rajeev
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asp.net global synclock object

is there a way in asp.net to make sure that a certain threaded sub is not run twice concurrently, no matter what? the code i have now is Public Class CheckClass ReadOnly Property CheckSessionsLock As Object Get If…
Yisroel M. Olewski
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What should I SyncLock in this code, and where?

I have a class that has two method in it, one calls a class which creates and executes a number of threads, the other is an event handler that handles an event raised when those threads complete (and then calls the first method again). I understand…
Mr Shoubs
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SyncLock not working in unit tests

I've got a Module that I'm wanting to use to cache some stuff. It's pretty simple. I wanted to shy away from the ConcurrentDictionary because it needs to be a guaranteed operation. Public Module SchemaTableCache Private lockObject As New Object …
Mike Perrenoud
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Is it safe to call SyncLock and MemoryBarrier even if you're not in a separate thread?

A follow-up to this post. My goal is to have only one Calculate at a time, so I have added a SyncLock: Public Sub Calculate(Optional inBack As Boolean = True) If Not inBack Then InternalCalculate(-1, False) Else If CalcThread…
Maury Markowitz
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Does Synclock lock the object reference or the object itself?

The title says it all really but I have provided some code to demonstrate what I'm asking. Public Class Class1 Private Object1 As New Class2 Private Sub Test1() Dim LocalObject1 As New Class3(Object1) Synclock Object1 …
o.comp
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Dequeue not the same as what is enqueued

Hello there stackoverflow! I'll just cut to the chase: I have a server / client program using TCP and I am having some trouble with the queue I use to put read packets in. This works by once a packet is read it's enqueued into the queue, and if the…
Professor Proton
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Synclock in Module Constructor?

Coming from Java where Static Block are immediately called. In VB.NET (ASP.NET) a Module Constructor isn't called until the first method is called. So, this begs the question, if I'm performing initialization within my Module's constructor do I…
user1068477
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SyncLock the same object from two different threads

Basically I have a global variable, such as... Dim int1 as integer And then I have two asynchronous functions, such as... function bleh() int1 += 1 end function and function Meh() int1 -= 1 end function Both these functions are being…
Aaron Brown
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Should I use SyncLock or Interlocked?

Can someone help me understand how synclock statements work? I know there are some other posts about synclock here but I was not able to follow the answers very well. I am trying to get a simple multithreading example up and running but am having…
Alexander Van Atta
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SyncLock loses lock if a function is called within the block in VB.Net

I have tried this in VB.2010 and 2019. This is a Windows Desktop app. It has a FileSystemWatcher create routine that gets control when a file is put into a folder and then processes the file via an invoked function. The invoked function must be…
QuickBooksDev
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