how to know if heap spaces is exhausted?

[stevech]

I have a situation where my program fails and I suspect it's because there's not enough RAM to create another string and my program is unaware. The result is that my program fails.

Diagnosis (I hope I'm correct)...
a task computes a string and stores this in a local variable named s, of type string.
This string is then sent to console.writeline() and buffered in RAM.
next it is used like this:
myString(i) = s
where myString() is a module global
this would make a copy of s in new RAM.

My testing shows that I'm managing the array index correctly.
If i change the code to say
myString(i) = left(s, 40)
then my program does not fail.

So I think the VM is running out of RAM . The problem arises for i = 8 where each string is about 60 bytes. That's probably too much.

I printed out register.ramUsed and I see 657 of 1536 (ramSize). That 657 does not ever change value; same numbers when my main() starts up. Perhaps because the heap starts at some initial size. I speculate that when the initial heap size is exhausted due to my storage of strings in this array, something goes wrong with future allocation from the remaining 1536-657 bytes of unused RAM.

Another possibility is that I am making a dumb mistake.

Maybe register.ramUsed is the RAM for static variables only and I need to look at register.heapSomethingOrAnother

[dkinzer]