Please select what you are reporting on:
Verse
What Type of Bug are you experiencing?
Memory
Summary
Probably related to Weak maps don't hold weak references??
Garbage collector seem to (never?) collect unused classes
Go to the !!! ISSUE !!! line in code
Steps to Reproduce
using { /Fortnite.com/Devices }
using { /Verse.org/Simulation }
some_class := class:
MemoryIntensiveArrays : [][]float
test_garbage_collector := class(creative_device):
OnBegin<override>()<suspends>:void=
# Don't use for or loops just in case they mess up the GC
# Should crash around the 30th call
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
spawn{FillMemory()}
Sleep(1.0)
Print("Didn't crash")
# Creates huge arrays but never store them anywhere (so they should be collected by the GC)
# Do it in a separate function in case GC only acts after leaving function scope
# <suspends> and spawned just in case GC would be waiting for OnBegin to end
FillMemory()<suspends>:void=
Print("Making big array")
HugeFloatArray := for(__ := 0..1000000) {0.123456789} # Create the big array again in case it would've been passed by reference somehow
# !!!!!!!!!!!!!!!!!!!!!!!!
# !!!!!!!! ISSUE !!!!!!!!!
# !!!!!!!!!!!!!!!!!!!!!!!!
# Commenting the line right under make GC work again
some_class: # <-- Don't store anywhere, still not collected by GC
MemoryIntensiveArrays := array:
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
HugeFloatArray
return # In case the object is returned instead as it is the last statement
Expected Result
Memory should be freed up if the class is not referenced anywhere (the same way the native array do)
Observed Result
GC seem to only collect the native array, when embed in a class it’s not collected
Platform(s)
PC
