[C#] Question about threading

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first of all there is no code problem, so if you are code solver or something ignore this, i want to do something but i dont know if its efficient, to make it simple, i have one line code

C#

this.dt = new DateTime.Now;

but i want to make it in thread, for example

C#

public void SetDateTime()
{
this.dt = DateTime.Now;
}

and i want to call it in thread,

C#

Thread d = new Thread(SetDateTime());
d.Start();

i will still use this method, only IF when the thread finishes the job, it automatically dispose itself, since i will use this in timer on 1000ms, which means on every second, there will be thread holding memory in ram, so after job done, will the thread dispose itself? kinda strange question but...

Posted 11-Sep-15 5:38am

SrgjanX

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Mehdi Gholam 11-Sep-15 11:53am

Threads are for long running processes which is clearly not the case for your method.

Threads are objects and will be garbage collected when not referenced.

Sergey Alexandrovich Kryukov 11-Sep-15 12:01pm

1) Threads are not really objects.
2) All unreachable objects will be eventually garbage-collected; it's not related to threading.
3) Note that dt is some member, not a local variable, so it can have reference on it from anywhere.
I answered this question, please see Solution 1.
—SA

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Sergey Alexandrovich Kryukov · Answer 1 · 2015-09-11T06:10:00

The question does not make sense; and it is not really related to threading, as formulated.

There is nothing you could do not "in thread", even if your thread is only one.
Also, dt cannot be "disposed", but it will be garbage-collected. Garbage collections and disposal are different things; read on these topics.

And it does not matter on what thread you do the call. The only issue is the reachability of objects. If you keep some reference to the object of the class declaring dt, it will be kept in memory. Please learn how it works: https://en.wikipedia.org/wiki/Garbage_collection_%28computer_science%29[^].

Of course, if you share any object, such as dt, between threads, you need to do this through mutual exclusion mechanism, one of the ways of thread synchronization:
https://en.wikipedia.org/wiki/Mutual_exclusion[^],
https://msdn.microsoft.com/en-us/library/ms173179.aspx[^],
https://msdn.microsoft.com/en-us/library/c5kehkcz.aspx[^].

—SA