[Gauche-devel] Implementation of Futures

[Glenn T. <gl...@ne...>]

2023-2-8

Hello!

Just curious about how futures is implemented.  A short description 
would suffice with respect to some code I was playing with (it's 
attached to this email just for fun).

The Gauche documentation on futures says that "future" calls code in a 
separate thread (I assume a Posix pthread).  So I get the feeling that a 
"future" is like "pthread_create" in C.  And that "future-get" can be 
likened to "pthread_join".  The structure of the programs between Scheme 
and C look alike.

But the output returns after "future-get" is random.  The output result 
from pthread_join is usally not.  This is not a problem for me.  I'm 
just curious as to why this happens.  The behavior using Guile scheme is 
similar with random output results from "touch".

This question might seem weird to you, and I apologize if so.  I'm just 
curious.  Thanks.

Glenn