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Fortunately, the collector always retains the relative order between
addresses, so we can sort based on the atom address itself. This
reduces the time spent looking for names in larger (e.g. global)
frames.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This provides call/cc and makes 'stacks' visible to the application.
Signed-off-by: Keith Packard <keithp@keithp.com>
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No-one sets frame->_num to 0xff to hit these
Signed-off-by: Keith Packard <keithp@keithp.com>
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This saves a pile more use of the allocator by noting when frames have
not been referenced from another frame and freeing them when they go
out of scope. Frames with references are left to the allocator to deal
with.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This should make it quite a bit faster than doing one at a time.
Signed-off-by: Keith Packard <keithp@keithp.com>
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The memmove may be overlapping, so make sure it happens only once by
just checking whether move_size has been set, rather than looking at
ao_lisp_moving; that doesn't get set when moving a noted cons as that
still needs to be walked at a later time.
Fix up the various looping move functions to all use the same
pattern. Atom was busted.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Handle memory compaction in places where we've got pointers into the
heap across an allocation operation. Either re-compute the values from
managed global references or add new roots across the allocation.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Not working yet
Signed-off-by: Keith Packard <keithp@keithp.com>
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Use a boolean array to note cons cells which would otherwise recurse,
then loop until that array is empty.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Pass reference to move API so it can change the values in-place, then
let it return '1' when the underlying object has already been moved to
shorten GC times.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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This enables changing values of atoms declared as constants, should
enable lets, and with some work, even lexical scoping.
this required changing the constant computation to run
ao_lisp_collect() before dumping the block of constant data, and that
uncovered some minor memory manager bugs.
Signed-off-by: Keith Packard <keithp@keithp.com>
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