forcing stdcpp gc?

Monkey Forums/Monkey Programming/forcing stdcpp gc?

k.o.g.

(Posted 2014) [#1]

Hello

This simple program runs into a memory overflow:

Strict

Class Fake
End

Function Main:Int()
	Local f:Fake
	Repeat
		f = New Fake()
		
		f = Null
	Forever
End

Any Idea, how i can manually force the gc on stdcpp?

ImmutableOctet(SKNG)

(Posted 2014) [#2]

You can use the 'gc_collect' and 'gc_collect_all' commands via external functions.

Function GCCollect:Void()="gc_collect"
Function GCCollect_All:Void()="gc_collect_all"

That should work well enough. I'm no expert on Monkey's garbage collector these days, but you shouldn't have an issue with these.

Generally speaking, you shouldn't need 'GCCollect_All', as it's done automatically when calling 'GCCollect', but I figured I'd set it up anyway.

ziggy

(Posted 2014) [#3]

You should use incremental garbage collector instead for this kind of apps, instead of manually calling for collection.

k.o.g.

(Posted 2014) [#4]

When i use gc_collect(), i become an MAV Error :/

@ziggy
you mean, the garbage collector for stdcpp is not usable?

ziggy

(Posted 2014) [#5]

you mean, the garbage collector for stdcpp is not usable

Yes it is! By default it'll calculate if collection is needed after every OnWhatever on Mojo. If you want to use it on a standard cpp app that does not use Mojo, or on any application that produces tones of allocations per frame, you should enable the incremental GC on every allocation.
From the documentation:

#CPP_GC_MODE=1                      '0 disable GC, 1=incremental collect after every OnWhatever, 2=Incremental collect every GC allocation

Just set it to:

#CPP_GC_MODE=2

k.o.g.

(Posted 2014) [#6]

Thanks for the Information, but the Program crashes at random time :/

Pharmhaus

(Posted 2014) [#7]

What kind of classes do you create (and why)?
Maybe there is a better way of handling this?!

k.o.g.

(Posted 2014) [#8]

Im working on a simple tcp http server with monkey,
I do all in pure monkey, only 4 functions are extern