Scheduler + Garbage Collection question

Pippoflash · Post by **Pippoflash** » 09 May 2011, 18:29

Hi,
I have centralized all scheduling in a single class (will post it soon may be useful to others).

I have one question,
when I schedule tasks for game rooms that get destroyed when no users are there, even though the room is destroyed, the scheduler can still run and access all room variables, and room extension (even if in the admin tool room has been destroyed).

It is not a problem to stop the task if the room is inactive, but I am concerned about memory.

Since room is destroyed but still all properties get traced, when does a room/extension get completely garbage collected?

namaste
Pippo

BigFIsh · Post by **BigFIsh** » 10 May 2011, 07:45

1. Where are you running the scheduler task for game rooms that get destroyed?

2. Where are you tracing the game room's properties to determine if it has been cleared/destroyed?

Pippoflash · Post by **Pippoflash** » 10 May 2011, 07:53

There is a centralized zone extension which has a single scheduler to which I subscribe tasks to be utilized by various room extensions.

The task holds a reference to the room, the extension, and a function to be called.

If I let the task run, even after the room has been destroyed, the task handler still traces the room, and the extension function still gets called.

Now when room is bound to be destroyed the task is removed, and all references set to null, but how can I be sure a room and its extension are really destroyed?

thanks

Post by **Lapo** » 10 May 2011, 09:51

Now when room is bound to be destroyed the task is removed, and all references set to null, but how can I be sure a room and its extension are really destroyed?

What is not clear is how do you access the Room after you have set to null all of you references. Can you explain?

Pippoflash · Post by **Pippoflash** » 10 May 2011, 11:06

Yes that's before nullifying everything. As an experiment I just let the task run, and everything continues to live and run although in the admin tool the room has been correctly deleted.

So removing references is a safe way to garbage collect?

Post by **Lapo** » 10 May 2011, 13:08

It's the one and only

The GC will never remove things that are referenced by your code.

Pippoflash · Post by **Pippoflash** » 10 May 2011, 13:26

OK thanks,
I will try to sleep cool that unreferencing will garbage collect rooms and extensions