I'm using core.async. In my application the main thread creates a few 
channels, starts a few go blocks and that's it. When I run it as a 
stand-alone (i.e. not in the REPL), it starts those go blocks and then 
exits. After being surprised initially, I understand why this happens: the 
main thread has nothing more to do, so it terminates and with it the 
application.

However, I want the application to run until it receives SIGTERM, for 
example. My current solution is to have a channel wait-for-exit and the 
main thread does a
(<!! wait-for-exit)
after starting its go routines and the signal handler does a
(put! wait-for-exit :ok)
This blocks the main thread until the signal handler is called and the 
application shut down.

It also wastes the resources allocated to the main thread. (Which is only a 
little bit of RAM, as far as I know, so not too bad.) What is the usual way 
to solve this problem? Let the main thread do the work of one of the go 
routines?

Best,

Richard

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