Great thanks for the clarification. I guess I should have ascertained that it is not reentrant since the C-API obviously modifies some global state. I will look at the current development for threading support for fun but in the meantime, will the implementation always modify global state or will the C-API pass around a state structure, allowing for multiple embedded instances?
On Tuesday, July 29, 2014 12:40:05 PM UTC-4, Stefan Karpinski wrote: > > On Tue, Jul 29, 2014 at 12:33 PM, Joseph Naegele <joseph....@gmail.com > <javascript:>> wrote: > >> Is it safe to allow code in multiple threads access the Julia runtime >> using the C-API? > > > It is currently not safe – Julia is not reentrant. This will change when > we add threading support (already in progress), but even then, it's not yet > clear if it will be possible to just arbitrarily call Julia code from C++ > threads. There's a lot of crazy things that need to be done to make > threading work reliably and conveniently, especially in the presence of > garbage collection, which will need stop all threads by signalling them so > that it can mark and sweep while nothing is being changed. >
