Catching memory allocation exceptions

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I haven't used C++ exception handling a lot in the past and I am about to
begin using it for an app I am working on.

I have to allocate large arrays of data for a 3 channel waveform made up of
about 40 megasamples of 16 bit (short) data each.

I am not really sure how much of that I can stream off disk at once. I would
like to learn how much memory 'would' be available to me and then create the
arrays with the amount of available memory.

Q1 ---> I am using the 'new' / 'delete[]' method but I don;t understand how
I might predetermine how much memory I can have. Would I loop with
tryu/new/catch until I have a successful allocation?

Once I figure out the proper combination of try/catch/throw to use (any
examples welcome) ..

Q2 ---> How do I actually 'cause' an exception like that to test it?


thanks

eng


.

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