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After marking a set of memory chunks, it's possible that all of them
will be packed tight against 'top', in which case none of them will be
moving. In that case, gcc 7.2.0 appears to generate incorrect code
causing the loop to be abandoned, meaning that we don't actually
collect anything at all.
Add a quick short-circuit test just after the mark phase that skips
the code which wouldn't do anything in this case.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Allow applications to redefine these as desired, add more flexibility
in what the various memory debugging flags can do.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This flags any object being printed and checks before recursing to
avoid infinite loops.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This lets BIGINT be a primitive type, allowing it to use all 32 bits
for storage. This does make strings another byte longer, and also
slightly harder to deal with. It's a trade off.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Also includes some code to display stack usage during collect calls.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This provides for the creation of smaller versions of the interpreter,
leaving out options like floating point numbers and vectors.
Signed-off-by: Keith Packard <keithp@keithp.com>
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These are only collected for debug purposes, but can get quite large
if the interpreter runs for a while.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Constant time and smaller can be a feature.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Constant block is now built in a subdir to avoid messing up source
directory.
Renamed to ao_scheme to reflect language target.
Signed-off-by: Keith Packard <keithp@keithp.com>
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