asynchronous

Invoke an AsyncController Action from within another Controller Action?

Hi, I'd like to accomplish the following: class SearchController : AsyncController { public ActionResult Index(string query) { if(!isCached(query)) { // here I want to asynchronously invoke the Search action } else { ViewData["results"] = Cache.Get("results"); ...

Communication between EJB3 Instances (JEE inter-bean communication) possible?

I'm designing a part of a JEE6 application, consisting of EJB3 beans. Part of the requirements are multiple parallel (say a few hundred) long running (over days) database hunts. Individual hunts have different search parameters (start time, end time, query filter). Parameters may get changed over time. Currently I'm thinking of the foll...

C# asynchronous beginsend method

I am a newbie in socket programming. I am developing a server client application. And I am using Asynchronous tcp ip socket. But now I am facing a problem. In my client side I am receiving my data by a 2kb byte array by beginReceive method. Its working perfectly if data size below or equals to 2 kb, but problem occurring when data size e...

Asynchronous I/O on Mac OS X

Hi, Meaning the C10K problem, what is the best way to do asynch I/O on Mac OS X (assume to use on Mac and iPhone/iPad)? On Linux our choice is epoll, on Windows is I/O Completion Ports. Top priority is performance and scalability (thousands of connections). UPDATE OK. As Darwin is BSD-like system, my common idea is to use kqueue. Is...

Two pass JSP page rendering

Suppose an example. I have following interface: public interface DataSource<T> { Future<T> fetch(); } This datasource can do asynchronous data fetching. And we have following tag for using datasource in JSP: <html> <d:fetch from="${orderDS}" var="orders"> <c:foreach in="${orders}" var="order"> <div class="order"> ...

HTTP request using asynchronous pluggable protocol in Java

I need to make an HTTP request to a resource that looks like "xy:index.html" in Java. The HTTP implementation does not have to be sophisticated. I just need to be able to do this to avoid same-origin violations when running in development mode for a GWT app by forwarding HTTP requests on the server-side to the "xy" protocol. Any clue...

How does one implement a truly asynchronous java thread

I have a function that needs to perfom two operations, one which finishes fast and one which takes a long time to run. I want to be able to delegate the long running operation to a thread and I dont care when the thread finishes, but the threads needs to complete. I implemented this as shown below , but, my secondoperation never gets don...

python gio waiting for async operations to be done

I have to mount a WebDav location and wait for the operation to be finished before to proceed (it's a script). So I'm using the library in this way: location = gio.File("dav://server.bb") location.mount_enclosing_volume(*args,**kw) # The setup is not much relevant location.get_path() # Returns None because it's not yet mounted since the...

Blackberry Asynchronous HTTP Requests - How?

The app I'm working on has a self contained database. The only time I need HTTP request is when the user first loads the app. I do this by calling a class that verifies whether or not a local DB exists and, if not, create one with the following request: HttpRequest data = new HttpRequest("http://www.somedomain.com/xml", "GET", this); d...

C# Process <instance>.StandardOutput InvalidOperationException "Cannot mix synchronous and asynchronous operation on process stream.".

I tried this myProcess = new Process(); myProcess.StartInfo.CreateNoWindow = true; myProcess.StartInfo.WindowStyle = ProcessWindowStyle.Hidden; myProcess.StartInfo.FileName = "Hello.exe"; myProcess.StartInfo.Arguments ="-say Hello"; myProcess.StartInfo.UseShellExecute = false; ...

Asynch operation in WinForm app

I have a WinForms app. that when a button is clicked retrieves a bunch of data from database formats it and displays it to the end user. The operation can take 10 - 30 seconds. I would like to display a message to the user in a Dialog just saying "Be patient the operation is running" while the operation is running and then close when th...

Writing a blocking wrapper around twisted's IRC client

I'm trying to write a dead-simple interface for an IRC library, like so: import simpleirc connection = simpleirc.Connect('irc.freenode.net', 6667) channel = connection.join('foo') find_command = re.compile(r'google ([a-z]+)').findall for msg in channel: for t in find_command(msg): channel.say("http://google.com/search?q=%s...

Render asp.net repeater as-and-when chunks of html is ready (streaming)

The problem is to render huge reports. Basically we have lots of data that get rendered in html reports (mostly using repeater or gridview). As it so happens, the data started out small and now we have tons of it. There are lots of such reports already built so total rewrite is not an option. Heck, the business is not even letting us pag...

looking for good solution to invoke http client method in a bean (i.e. MDB, session)

---[ejb request]--> bean -----[http request]----> host I would like to invoke http client method (http put, get...) within a bean, but I want these beans, either MDB or stateless session bean, run as quick as possible (with extreme short life time). Problem is, the http connection is too slow (especially when connecting to slow host...

Returning ActionResult in an AsyncController when an event ocurrs

I would like EndGetMatches in the code below to get called when a certain event is fired. BeginGetMatches executes and completes but I don't want EndGetMatches to get called yet. I want to return the ActionResult only when my other Thread notifies me i'm ready to. public delegate void MatchEvent(MatchEventArgs args); public IAsyncResult...

Objective c: How to use memory managment properly for asynchronous methods

I need to call a method that starts some asynchronous code MyClass* myClass = [[MyClass alloc] init]; [myClass startAsynchronousCode]; Now I cant simply release it as this would cause an error since the code is still running: [myClass release]; // causes an error What is the best way to deal with the memory? ...

Write status messages to a textbox asynchronously?

Hi there, I recently started programming in WinForms using C#. I have a requirement where I need to search a set of folders and the sub-folders and display the status information to a textbox as I do the search like - Looking up folder "C:\Windows"... Found 8 files... Copying file 1 of 8 to "D:\Temp"... I have a method which does all...

Getting web page after calling DownloadStringAsync()?

Hello I don't know enough about VB.Net yet to use the richer HttpWebRequest class, so I figured I'd use the simpler WebClient class to download web pages asynchronously (to avoid freezing the UI). However, how can the asynchronous event handler actually return the web page to the calling routine? Imports System.Net Public Class Form1...

C# Asynchronous Network IO and OutOfMemoryException

I'm working on a client/server application in C#, and I need to get Asynchronous sockets working so I can handle multiple connections at once. Technically it works the way it is now, but I get an OutOfMemoryException after about 3 minutes of running. MSDN says to use a WaitHandler to do WaitOne() after the socket.BeginAccept(), but it do...

Async call Objective C iphone

Hi guys, I'm trying to get data from a website- xml. Everything works fine. But the UIButton remains pressed until the xml data is returned and thus if theres a problem with the internet service, it cant be corrected and the app is virtually unusable. here are the calls: { AppDelegate *appDelegate = (AppDelegate *)[[UIApplicatio...