Not usually. Only an advanced GC will be concurrent. Something like Perl or Ruby...

chrisseaton on Jan 26, 2019 | parent | context | favorite | on: Websocketd

Not usually. Only an advanced GC will be concurrent. Something like Perl or Ruby for example runs in the foreground. If it is concurrent then you shut down the GC thread, fork, and then start a new thread in each new process.