How to make SIGINT caught only by the main thread of the process?

Question

linux

The daemon in the main thread starts n children, while there is an overridden SIGINT handler. Everything seems to be fine, but when SIGINT is sent by the user (ctrl + c), a random thread catches it. And it is necessary that always only the main thread catches the signal in order to correctly terminate the daemon. Tell me what to google, where to dig on this issue?

Answer 1

There is a great example here .
And here is something to read.