I'm having some problems getting ncurses' getch() to block. Default operation seems to be non-blocking (or have I missed some initialization)? I would like it to work like getch() in Windows. I have tried various versions of timeout(3000000); nocbreak(); cbreak(); noraw(); etc... (not all at the same time). I would prefer to not (expl...
I have used the "Better Google Analytics JavaScript that doesn’t block page downloading" to load Google Analytics dynamically so that it will not block HTML / page rendering. However, it appears occassionaly that my HTML page will block rendering on the Firefox 3.0 (WinXP) status message states: "Transferring data from www.google-analy...
I was reading that question (http://stackoverflow.com/questions/226784/how-to-create-a-simple-proxy-in-c) that is near of my wishes. I simply want develop a c# app that, by example, monitors Firefox, IE, etc and logs all navigated pages. Depending of the visited page, I want to block the site (like a parental filter). Code snippets/sam...
I need to Send & Recv at the same time, which should be the best: 1 thread handling send & recv with non-blocking socket or 2 threads with One handling blocking recv() + one handling send() Or is there another option? I am expecting to have up to about 50 2 way connections.. Which result in 50 thread in option1, and 100 thread in opt...
Hello, I am using a JQuery Plugin called lightbox (which is great btw). Problem is, I am accessing images on external sites and I think they are blocking lightbox from preloading them. Specifically I have confirmed that picasa gives the preloader a 404 (using firebug), but if I right click the failed request in the firebug "net" tab, a...
I was reading a comment about server architecture. http://news.ycombinator.com/item?id=520077 In this comment, the person says 3 things: The event loop, time and again, has been shown to truly shine for a high number of low activity connections. In comparison, a blocking IO model with threads or processes has been shown, time and ag...
I am writing a GUI app in Pyglet that has to display tens to hundreds of thumbnails from the Internet. Right now, I am using urllib.urlretrieve to grab them, but this blocks each time until they are finished, and only grabs one at a time. I would prefer to download them in parallel and have each one display as soon as it's finished, wit...
I have written a C# library which has a method to count words from multiple passages of text in parrallel. The passages of text are given as character streams where there is a random delay each time getnextchar() is called. My library method has to take an array of these character streams and return a combined word-frequency count. To...
We're using a SQL Server 2005 database (no row versioning) with a huge select statement, and we're seeing it block other statements from running (seen using sp_who2). I didn't realise SELECT statements could cause blocking - is there anything I can do to mitigate this? ...
My main purpose is to execute processes one by one in a round-robin fashion until one calls receive() and is blocked, so that the execution switches to the next process in the queue. There is a controller application which is coded in Java and it executes these processes(which are also Java applications) using Runtime.getRuntime().exec()...
I have a middle size query with 500.000 registers from an Oracle to an DB2 system through a DBLink. Can this query block the DB2 table so that it can be updated until i close the DBLink or until i finish the job whith the query (an insert-select into an Oracle table) ...
I'm working on a website where if I click on a normal select box it's blocked as a popup by IE8. What?! Is there something I'm doing? Is there any way around this? I am using a few jQuery plugins but nothing that effects those select boxes. Would the jQuery Form plugin do this? ...
Hi all, Hopefully this is a quick and easy question about BufferedOutputStreams and DataOutputStreams in java. When I write bytes to the output stream like myBufferedOutputStream.write(array); myDataOutputStream.write(array); Do these methods write them instantly to the stream and return or do they ever block? I did not see anythi...
Just curious. How does actually the function Sleep() work (declared in windows.h)? Maybe not just that implementation, but anyone. With that I mean - how is it implemented? How can it make the code "stop" for a specific time? Also curious about how cin >> and those actually work. What do they do exactly? The only way I know how to "bloc...
Hi all, I was told that any data going out over an output stream (i'm using tcp/ip in my case) could block. In that case, I would not want to halt the application by having to wait for data to go out. I need a model of how to do this. I need to send message objects over this stream. I am thinking I need a blocking queue that conta...
I'm using a single producer-single consumer model with a blocking queue. I would like for the producer, when it has finished producing, to wait for the queue to empty before returning. I implemented the BlockingQueue suggested here by Marc Gravell. In my model, the producer (renderer) is using events to notify the worker (printer) whe...
Hello Everybody, I have the classic problem of a thread pushing events to the incoming queue of a second thread. Only this time, I am very interested about performance. What I want to achieve is: I want concurrent access to the queue, the producer pushing, the receiver poping. When the queue is empty, I wand the consumer to block to t...
Hi, I am wondering if there are ways to stop IIS from sending to a particular email or list of email addresses. I reckon if I can force badmail on a particular email address it might do it. But that's just bad manners. Thanks ...
Once upon a time I bumped into Introduction to Indy article and can't stop thinking about blocking vs non-blocking IO ever since then. Looking for some good articles describing what are pros and cons of blocking IO and non-blocking IO and how to design your application in each case to get natural, easy to understand and easy to maintain...
Given I invoke an actor from inside react does this block the calling Actor or is it still processing other requests? class worker extends Actor() { def act() = { loop { react { msg => var foo = another_actor !? 'bar' //Block here? println(foo) } } } ...