Jacks, gij and the GC

Thu Apr 22 15:41:00 GMT 2004

Ranjit Mathew wrote:
>Anyways, to cut a long story short, I have
>these questions:
>>1. Doesn't anyone else see this behaviour on Linux?
>>2. Why should the GC print out the "GC Warning" if
> we are throwing an OutOfMemoryError anyway?
>>
It shouldn't. I think we should be able to fix things so that an 
OutOfMemoryError gets thrown correctly, if you have set a maximum heap 
size. Like Andrew says, its harder to get things right when the heap is 
unbounded. I suspect the kernel should probably end up killing your app 
before virtual memory is really exhausted.
>4. Is there an option corresponding to "-mx" to limit
> the heap size for natively compiled executables?
>>
There is the GC_MAXIMUM_HEAP_SIZE environment variable. However one 
thing I want to add is a GCJ_ARGS environment variable so that you can 
specify runtime arguments when running a gcj compiled application in a 
similar way to what you'd do when running gij. For example:
GCJ_ARGS="-mx=64m" ./mygcjapp
Regards
Bryce.