hey guys, I'm totally inexperienced in terms of threads, so here's my question: How do threads work within an instance of an object, in particular, I'm working on a Windows Service. So, my Service is basically an instance of an Object right? So, say I have a System.Timers.Timer in my Service, and that fires an ElapsedEventHandler ever...
Reading the javadoc on FileDesciptor's .sync() method, it is apparent that sync() is primarily concerned with committing any modified buffers back to the underlying storage. I.e., making sure that anything that your program has output will actually make it to the disk (or socket or what-have-you, but my question pertains mainly to disks)...
Hello ! I'm running the following code : RunspaceConfiguration config = RunspaceConfiguration.Create(); PSSnapInException warning; config.AddPSSnapIn("Microsoft.Exchange.Management.PowerShell.Admin", out warning); if (warning != null) throw warning; Runspace thisRunspace = RunspaceFactory.CreateRunspace(config); thisRunspa...
I've got two list boxes, one a master, the other a child. When the index changes on the master, the child listbox gets filled appropriately with records relating to the master. My problem is coming up when one master takes a long time to get all the records and before it has completed getting the records, a user clicks a different mast...
I have a class (simplified example) like : public class SomeCollection : ICloneable { public void Add(Item item) { /* ... */ } public void Remove(Item item) { /* ... */ } public Item Get(Key key) { /* ... */ } /* ... */ public object Clone() { /* ... */ } } I need that when a thread enters Clone() no other ...
Hi all, I have a pretty serious multithreaded debugging problem. I have some kind of timing issue when interacting with a serial device, and I need to track it down. I have three threads: The main thread for UI updates. The user can either change one parameter of the device, or many all at once by choosing a preset. The status chec...
Hi all, I'm having a problem updating a control on my ui from a thread created using ThreadPool.QueueUserWorkItem Inside this thread i am calling addControlToPanel(li); As shown here private delegate void addControlToPanelDelegate(ListItem li); private void addControlToPanel(ListItem li) { if (panel1.InvokeRequired) { ...
I've got a method implemented using the Event-based Asynchronous method pattern. I also want to offer a synchronous version of that method, but don't want to re-write it (because the method involves a call to WCF from Silverlight, the Async version has to be the primary method). I've come up with the following generic method to convert ...
In a java application,when the user hits download,establishing the remote connection and downloading the content from remote is done in a separate thread and a dialog is popped up in the screen to show the download progress. Now a cancel command has been added to the dialog inorder to provide the user with an option of cancelling the dow...
Hello everyone, My working environment is VSTS 2008 + C# + .Net 3.5. I want to learn the differences between UI thread and worker thread, and any other types of thread (i.e. non-UI thread is the same as worker thread)? I also want to learn the restrictions of what we can do on each type of threads and best practices to avoid any issues....
Hi. I am creating an array of threads based on the number of records in a database. Each thread then polls an ipaddress and then sleeps for a time and then repolls again. I periodically check the database for any change in the number of hosts. If there are more hosts I start another thread. If there are less hosts I need to kill the spec...
I have created a test service with a method that contains a very long loop. I was hoping that when a timeout transaction occurs, the method execution will flush, but it doesn't. The client gets a timeout, but the processing continues on the server. Is there way to stop it? Without changing the method code? Here is the example: in the ...
Can somebody please explain why the event "OnNewMail" is not raised when using an STA thread in the code below? The program attempts to use the Redemption library to intercept incoming outlook mails. class Program { [STAThread()] // When this line is deleted the application works static void Main(string[] args) { ...
I have a GUI C# application that has a single button Start/Stop. Originally this GUI was creating a single instance of a class that queries a database and performs some actions if there are results and gets a single "task" at a time from the database. I was then asked to try to utilize all the computing power on some of the 8 core syst...
I have a function thats the main bottleneck of my application, because its doing heavy string comparisions against a global list shared among the threads. My question is basicly this: Is it bad practive to lock the list ( called List gList ) multiple times in 1 function. For then to lock it again later ( Basicly locking when doing the l...
Hi, programmer mates. I was testing java threading capabilities with a very simple code (or at least it seemed simple). I have this class Account: public class Account { protected double balance; public synchronized void withdraw(double value) { this.balance = this.balance - value; } public synchronized void deposit(double value...
In my application I would like to be able to wait until table view animations (deleting table view rows) were complete before executing part of my application. I was wondering if there would be any way to wait or pause my application until the these animations were complete. Thanks. ...
I'm using a separate NSAutoReleasePool for my thread NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; [self bulkyFunction]; // time consuming op [self performSelectorOnMainThread: @selector(doneAll) withObject:nil waitUntilDone:NO]; [pool release]; and I call a function (bulkyFunction) that allocates two strings. current...
I am in the process of writing an enterprise-level application utilizing WCF and NetTCP services. I chose NetTCP initially out of curiosity, but later determined it to be the best option for me since I can have services that are called that take 5+ hours to return results due to the amount of data crunching involved. The way I currently...
In Java: I have an object that holds references to 2 daemon threads. I am considering the corner case where it is not deinitialized, so I can determine whether I need a finalizer. The function for detinitializing stops the threads. I could go ahead and just add a finalizer but I am curious: a) Can the object get garbage collected while...