Hello!
I have a program which consists of N processess. One of them (the parent) has created sets of semaphores, shared memory and message queue. How to clean after this program nicely? I know i must write a function to do that and call it whenever a user sends SIGINT or other terminating signal or the process just die. And what are main types of signals that i must capture?
Thank you!
Last edited by kbzium; 01-10-2012 at 01:31 PM.
I would only capture SIGINT. SIGINT is used to communicate the intent of the user to shut the program down. Other signals are probably indicative of bugs.
There isn't a lot you can safely do from within a signal handler. Really, you should just set a flag (some global variable of type sig_atomic_t), and check this flag elsewhere, and shut down within the main program logic at a safe point.
Code://try //{ if (a) do { f( b); } while(1); else do { f(!b); } while(1); //}
