Signal handling demands constraints in how much you do. I never enjoyed coding to unix signals, I always wound up finding a new way to trample on that state you

Signal handling demands constraints in how much you do. I never enjoyed coding to unix signals, I always wound up finding a new way to trample on that state you assume is clean, but inside the sig handler it turns out things are not what you think sometimes. The manual page used to be pretty explicit: do as little as humanly possible inside this execution context. I am probably mis-remembering but my memory is getting a signal while handling another signal was a point of pain.