.net - multithreading loop effecient?right? -


I have the following multi threading function to apply to parse the difficulty content in the thread from the list of URLs. The code was suggested by a user and I want to know that this is an effective way of implementing me. I am running the code now and am getting errors on all the tasks which managed to fix the single thread. For example, for a list I now use to visit the URL; I was getting 'ArgumentOutRangeException - the capacity was lower than the current size'? / Now everything needs to be synchronized 

  dim startwatch new stopwatch dim elapsedTime long = 0 dim urlCompleteList string as in the form of = String.Empty dim numThread integer = 0 Threadlist new list (thread of) as startwatch.Start () for completeList slow thread = new thread (AddressOf processUrl) thread.Start (link) ThreadList.Add (thread) next to each link) thread list Thread. Join () next to each thread in startwatch.Stop (elapsedTime = startwatch.ElapsedMilliseconds End Sub code here To enter the Public Sub processUrl (ByVal uRL String) enter 'URL' to be sure that we never visit this before visiting pages.Contains (visit URL) then ** visit page (url) ** DIME STARTWatch As if the new stopwatch is slowed down as long as I = 0

if < Code> VisitPages is shared between the processUrl threads, so yes, you can use that archive at a time only. Thread needs to assure - as long as the collection is thread safe and takes care of that for you

.

The same thing with any other data that is shared between the threads you have created.


Comments

Post a Comment

Popular posts from this blog

sql - dynamically varied number of conditions in the 'where' statement using LINQ -

I am using my first project LINQ (in mvc), so maybe there's something very simple that I remember. However, a day of searching and experimenting does not work, so it works. I am trying to write a LINQ query (Linux to SQL) in which in many cases where the statement is different from an OR or an AND. We do not know how many conditions are going in the query till runtime. This search is for filter control, where the user can choose multiple criteria for filtering. Select from table where table.col = 1 or table.col = 2 or table.col = 7 .... 'Other number of conditions Before I just create the SQL query as a string, while looping over all the situations. However, it seems that there should be a good way to do this in LINQ. I tried to use Expression trees, but they had a second thought for this moment on my head, where the lambda function was to be executed inside the statement such as: values ​​for matchingRows = matchingRows for each value Where (function (row) row.c...
Read more

asp.net mvc - Dynamically Generated Ajax.BeginForm -

I have a problem with ASP.NET MVC Ajax forms. I generate many Ajax form in a table such as: & Lt; Input type = "submit" name = "activity" value = "add activity" / & gt; & Lt;%}% & gt; & Lt; / TD & gt; & Lt; / TR & gt; & Lt;%}% & gt; So far so good. When I post one of those forms, it gives a partial view in a div, and in this new partial view a new Ajax Beginnform (which is not in Genesis form) This second Ajax Beginnorf is exactly like the ones I got on the table, but when I post it, I do not get the "Ajax Post", but a normal post that sends me to a new page, I do not know whether the two Ajax forms What is the reason for the difference between, why is it the "dynamically generated" Ajax form behaves like a normal HTML form? By the way, I know that I can do it in different ways using javascript, but I would like to understand whether it can only be done using MVC helplars and Ajax lib...
Read more

Debug on symbian -

I am using trk for phone debug This works well for the Holorld project But when I start the project in phone debug mode 1) the load failed 2) TrkProtocolPlugin: to target the specified file Failure (please verify If any body understands what problem I am experiencing, then this problem helps me Pre-release If the application has the privileges assigned (with the appropriate certificate) itemprop = "text" > In your case, I will check: / li> If there is no conflict of application ID with any other application of device If there are problematic commands in the installation package (for example copy copy for non-accessible directories)
Read more