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AppGameKit Classic Chat / Android interpreter stack depth.

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paulrobson
9
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Joined: 22nd Nov 2014
Location: Norfolk, England
Posted: 4th Mar 2015 11:28
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I am writing something which has a lot of data in a structure (about 20000 integers - it's a tile table). This appears to be pushing the stack in the interpreter on mobile devices to the limit - causing errors "interp stack" in the ADB log (running it over broadcast crashes)

Can I ask, when you pass a parameter by reference, does it just use an actual reference or does it plonk the whole thing on the stack and remove it again when the function completes ? I suspect the latter because reference parameters are relatively recent ?

If the latter this has issues both for performance and for memory usage.

I can work round it easy enough, but I just wondered.
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JimHawkins
14
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Joined: 26th Jul 2009
Location: Hull - UK
Posted: 4th Mar 2015 12:53
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Paul - What's the data configuration and function call?

That's why Object Pascal case const keyword in function calls. It means "give a read-only pointer."

Onwards and sometimes upwards
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paulrobson
9
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Joined: 22nd Nov 2014
Location: Norfolk, England
Posted: 4th Mar 2015 20:46
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Ah, fixed it. Really dumb error. Forgot the 0xCxxxxxxxx is actually negative..... so it allocated insane amounts of memory. Impressed it worked on the PC
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JimHawkins
14
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Joined: 26th Jul 2009
Location: Hull - UK
Posted: 4th Mar 2015 22:19
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We all do it! Join the club...

Onwards and sometimes upwards
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