25
votes

TPL uses Task Schedulers to coordinate tasks. According to official document, default task scheduler uses Thread Pool, but if TaskCreationOptions.LongRunning option is presented then it will create a dedicated thread for that task (A).

Question: As of now MSDN documents for Visual Studio 2010 are not ready and current online MSDN is not finalized; does anyone knows if (A) is true or false?

2
Could you provide a concrete source for (A) ? - Henk Holterman
This is an interesting text on this title: download.microsoft.com/download/B/C/F/… - Kaveh Shahbazian

2 Answers

38
votes

Yes, LongRunning forces the creation of a new thread outside the pool. Here's some pseudo-disassembled code from the latest framework version:

...
if (task.Options HasFlag LongRunning) then
    create new Thread thread
    thread.Start(task)
...

Edit: converted from ugly C# to pseudocode.

15
votes