How to create a task or thread in C# and run it when needed

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Hi,In my program I receive some values every second from a particular ip. I have to do some operation on those values which takes more than a second. If I spend a second on this operation, I would not be able to read the values generated during that second and I would miss out those values. So I am planning to create a Task in C# and invoke it whenever I get the values and pass the values to it so that it would run the operation and I would not miss out any values.
I was doing the following

C#

if(array_size)<500
{       
Task.Run(() => SendMessage(testarray));
}

But I think this is creating new task every time I invoke it and after few hours I got out of memory exception.
Could you guys please suggest me some way to solve this problem in an efficient way so that I don't encounter out of memory error. Also, if possible please share a snippet of the solution.
Thanks

What I have tried:

I tried running it and after few hours ,it would crash with out of memory exception

Posted 1-May-18 2:21am

Member 13245297

Updated 1-May-18 3:41am

Wendelius

v2

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BillWoodruff 1-May-18 12:35pm

Is there any possibility you can pause, or delay, the incoming data stream ?

RickZeeland 1-May-18 14:20pm

What hardware are you running your application on, what CPU, amount of memory etc ?

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OriginalGriff · Answer 1 · 2018-05-01T03:00:00

That won't fix your problem in the long run: even with a threaded system, if your processing takes 1.1 seconds and you receive new data every 1.0 seconds, you will last 0.1 times the number of cores you have in your processor seconds at best before you are losing data again.

Threading can't solve this, in fact it may make the problem worse because each thread adds extra overhead in terms of memory and processing time that complicates your task.

You need to look very carefully at the processing job you are doing and either improve its efficiency or replace it with a more efficient algorithm so that your processing takes 0.9 seconds, not try to "offload" the problem onto threads.

Sorry, but we can't do that for you.

RickZeeland · Answer 2 · 2018-05-01T03:09:00

Solution 2

You could use taskname.IsCompleted, and then dispose the task, see: How to: Wait on One or More Tasks to Complete[^]
Example:

C#

Task checkProcesses = Task.Factory.StartNew(this.CheckProcesses);
//... e.g. a loop ...
While (True)
{
  if (checkProcesses.IsCompleted)
  {
	checkProcesses.Dispose();
	checkProcesses = Task.Factory.StartNew(this.CheckProcesses);
  }
}

private void CheckProcesses()
{
}

Posted 1-May-18 3:09am

RickZeeland

Comments

BillWoodruff 1-May-18 12:34pm

This sounds reasonable only if the OP can pause/delay the incoming data stream ... imho the OP's description suggests that not possible.

RickZeeland 1-May-18 13:39pm

He could use multiple tasks or an array of Tasks in the loop.
But the key problem seems to me that his Tasks are not properly disposed, normally dispose should not be needed for Tasks but in his case it seems necessary ...