[plt-scheme] synchronizing pthread with MzScheme thread

From: Robert Nikander (nikander at nc.rr.com)
Date: Tue Jul 10 13:45:31 EDT 2007


On Mac OS X or Unix, am I correct that the way to coordinate between  
the MzScheme thread and another OS-level thread is to make Scheme  
wait on a file descriptor, by calling `scheme_block_until' or reading  
from a port created with `scheme_make_fd_input_port'?

The only way I know to make file descriptors suitable for this is to  
use the `socket' and `pipe' system calls.  Is that how it's usually  

Also, the "Inside PLT MzScheme" manual mentions `object-wait- 
multiple'.  I assume that is an old name for `sync'?

In my specific case I'm embedding MzScheme in a Cocoa app, and I'm  
trying a design with 2 OS-level threads -- one for Cocoa and one for  


Posted on the users mailing list.