30 Mar
2009
30 Mar
'09
9:40 a.m.
I'm not quite sure what you mean.
Any code within a THREADS_ALLOW()/THREADS_DISALLOW() pair can be executed simultainiously in multiple threads on multiple cores. They only release the interpreter lock so that another thread may execute Pike-code.
Thus, many modules that glue C-libraries into Pike will have THREADS_ALLOW()/DISALLOW() statements around the actual call to the library it wraps, allowing other threads to execute while the library is called.
In the cases where wrappers don't do this, it's not unlikely that the wrapped library isn't thread-safe and thus would require separate locking if the interpreter lock was released.