'import ccall unsafe' and parallelism

Donn Cave donn at avvanta.com
Thu Aug 14 16:21:11 UTC 2014

I'm no judge of what's true about safe and unsafe, but this account of
the system has at least to my ear the ring of authenticity:


The FFI section is short and readable.

With respect to whether "unsafe" does or does not block other threads,
I can never penetrate the verbiage about capabilities to know for sure
what to expect in practice, but when I checked, in practice, "unsafe"
blocks other threads.  I use "safe" to avoid this.


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