RE: FFI, safe vs unsafe

On 13 April 2006 10:02, Marcin 'Qrczak' Kowalczyk wrote:

John Meacham writes:

...

Checking thread local state for _every_ foregin call is definitly not an option either. (but for specificially annotated ones it is fine.)

BTW, does Haskell support foreign code calling Haskell in a thread which the Haskell runtime has not seen before? Does it work in GHC?

Yes, yes.

If so, does it show the same ThreadId from that point until OS thread's death (like in Kogut), or a new ThreadId for each callback (like in Python)?

A new ThreadId, but that's not a conscious design decision, just a symptom of the fact that we don't re-use old threads. Cheers, Simon