how to calculate max possible stack size utilization

Question

Is there any elegant way to calculate the maximum possible stack depth utilization of a program, using IDAPython?

currently my best approach is iterating through all functions and counting stack-increasing instructions.

prusanov · Answer

IDAPython-function get_frame_size(ea) gives size of stack in bytes.
So you can get max stack through all available functions:

"0x%04X" % max(get_frame_size(f) for f in Functions(0, BADADDR))

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