In order to use SetWindowsHookEx in a GUI application, you usually want in the bottom line to have a function in your thread called whenever an event has occurred. So for instance if I'm making a software to show all keys being pressed on the system, I want that somehow my GUI app will have the function AddKeyToList(int vkeycode) called...
Not sure if my title is worded well, but whatever :) I have two threads: the main thread with the work that needs to be done, and a worker thread that contains a form with a progress bar and a cancel button. In normal code, it would be the other way around, but I can't do that in this case. When the user clicks the cancel button, a pro...
Considering the code below. I would like to run 3 experiments at a time. The experiments are independent, the only thing they share is the Model object which they only read. As there are seemingly no hard things in threading this out, how can I best do this in Python? I would like to use a pool or so to make sure that only three experim...
MSDN said that BlockingCollection.Take call blocks if there is no elements in it. Does it mean the thread will yield the timeslice and go to the waiting threads queue? If yes does it mean that the thread will change its state to Ready once the blocking collection received an item and then will be scheduled to next timeslice as per usual...
When you use javax.xml.ws.Endpoint.publish to handle incoming restful/soap requests, will it generate a thread for each request? or will I have handle threads myself? I've been trying to work this out for a couple of days now. The documentation hints on threads, but there is nothing specific about this. Doco says: An Executor may be ...
Hi, I have made a java application of a 4 way junction. I can to move all the cars across the junction using THread.sleep() but I need to make the cars not crash into one another. (See diagram) What should I use ? Synchronization wait()/notify()/notifyAll() ThreadPanels Canvas (btw what is Canvas and its purpose ?) I have used l...
Hello ! i have a simple program with one procedure. Procedure TForm1.btnKeywrdTransClick(Sender: TObject); Var i, ii : integer; ch_word, zword, uy_word: widestring; Begin TntListBox1.items.LoadFromFile('d:\new folder\chh.txt'); //Chinese TntListBox2.items.LoadFromFile('d:\new folder\uyy.txt'); //Uyword TntListBox...
As I said, i have a java desktop application. The interface contains a JList and I modify the content of this list in some custom listeners that i implemented. One of the listeners iterates through all the items in the list and performs some operations that may take a while. I would like to show the user the item that I am currently at....
I have defined a splashscreen to be shown during loading. But depending on the internet connection it can takes only 600ms to load or sometimes 5000ms. So i defined that the splashscreen is at least shown 3000ms so that the user is not irritated by flackering screen. I define the start of the splashscreen the following way: private vo...
In C I have a pointer that is declared volatile and initialized null. void* volatile pvoid; Thread 1 is occasionally reading the pointer value to check if it is non-null. Thread 1 will not set the value of the pointer. Thread 2 will set the value of a pointer just once. I believe I can get away without using a mutex or condition ...
I know there is one for multi processes waitpid(-1,WNOHANG,NULL) that is non-blocking function call to check if there is any child process currently working on But is there any similar lib function to check for multithread? All i want to do is check if there is any thread currently on, if not reset some global values. ...
I've a thread that runs following tcpConnect method. I wish to stop it at any given time by setting Program.PrepareExit to true. However my program is stuck at: Int32 bytes = stream.Read(data, 0, data.Length); and doesn't really react to Program.PrepareExit set to true. How can i make it to always quit when I tell it so? public stat...
Hey everyone! I'm new to Android programming and I'm using AsyncTasks to fetch data in response to the user pressing a button. This works well and keeps the interface responsive while fetching the data, but when I checked out what was going on in the Eclipse debugger, I found out that every time a new AsyncTask was created (which is qui...
I have time-critical piece of code in my app. I made the thread which runs it Highest priority - that's the most I could do. Is there any suggestions on how to make part of the code run in this thread to be interrupted as few times as possible (less context switch occurred) ? The code is not complicated. I replaced all the method calls...
I have soft real-time .NET application run on W2008R2. I just realised that I cant explain how precisely threads are being scheduled. And for my embarassement I dont know how it works down to OS threads at all. So I will explain what I know and I'd appreciate if anyone could help me to fill the gaps and refer me to a simple descripti...
In Russinovich book it says that thread (NOTE: this is about OS thread) will need dispatching (scheduling) if it a) became ready b) ended its timeslice, yields or blocks. I have a managed thread in my C# real-time app for which is very important to achieve as fewer context switches as possible. This thread has Highest priority and the ...
How big is time slice for a thread to run in W2008R2 ? ...
I have a three layer application in C#. In business layer i have many threads that do same job . I want to show the progress of each thread on UI , but i don't have the reference of presentation layer . How can i do this ? What's the best way for this ? Thanks . ...
I'm trying to understand in a bit more detail how a OS loaderlock is used in relation to the loading and unloading of DLL's in Windows. I understand that every loaded DLL get notified when a new thread is created/destroyed and or a new DLL is loaded/unloaded. So does that mean that the DllMain function is run inside a lock and no other...
I would like to send a notification in a broadcast receiver. the notification should launch the default sms app. Ultimately I want to create my own notifications for incoming text messages consistent with what the deault app, Handcent, and Chomp do. I have the code to detect the threadId of the incoming sms. How can I craft the intent...