What happens to child threads when their parent dies in GHC Haskell?

Question

The documentation for forkIO says

GHC note: the new thread inherits the masked state of the parent (see mask).

The newly created thread has an exce         


        

Answer 1

In a standalone GHC program, only the main thread is required to terminate in order for the process to terminate. Thus all other forked threads will simply terminate at the same time as the main thread (the terminology for this kind of behaviour is "daemonic threads").

https://hackage.haskell.org/package/base-4.7.0.0/docs/Control-Concurrent.html#g:12