Talk:Handle a signal
Error in C example
The C example uses printf
in the signal handler. However, printf isn't signal-safe, that is, if the signal happens during the printf call in the main program, it might fail. The correct way would be to set a flag of type volatile sig_atomic_t
in the signal handler, and test that flag in the main program. Note that usleep returns when interrupted by a signal, so handling of that signal will not be delayed that way. --Ce 08:38, 31 March 2009 (UTC)