[Pika-dev] Re: vtable bug (Re: Replacing cport [...])

[Andreas Rottmann]

Tom Lord <address@hidden> writes:

> The vtables interface from reps has:
>
[...]

> Unfortunately, it also has:
>
>       void * scm_binary_data_addr (t_scm_arena arena, t_scm_word * value);
>
> That one is problematic.  Unless VALUE is locked, the address returned
> can not be trusted.  A copying collector can move it at any time.
> (This would be a good example of how even "noop" locking code can be
> handy --- scm_binary_data_addr could verify that VALUE is, indeed,
> locked.)
>
So should I add a scm_object_lock_is_held() or so function? The same
issue also comes up with scm_string_value(), which turned to public
function with my latest string foo (not yet published).

Andy
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