• Damien George's avatar
    py: Remove unique_codes from emitglue.c. Replace with pointers. · df8127a1
    Damien George authored
    Attempt to address issue #386.  unique_code_id's have been removed and
    replaced with a pointer to the "raw code" information.  This pointer is
    stored in the actual byte code (aligned, so the GC can trace it), so
    that raw code (ie byte code, native code and inline assembler) is kept
    only for as long as it is needed.  In memory it's now like a tree: the
    outer module's byte code points directly to its children's raw code.  So
    when the outer code gets freed, if there are no remaining functions that
    need the raw code, then the children's code gets freed as well.
    This is pretty much like CPython does it, except that CPython stores
    indexes in the byte code rather than machine pointers.  These indices
    index the per-function constant table in order to find the relevant