Hey!
I am still a newbie to kernel development. I was reading about signals and signal handlers. The signal function describe as follows:
sighandler_t signal (int signum, sighandler_t action)
As per my understanding, when the signal denoted by signum occurs/is raised, the action is taken which can be either SIG_DFL, SIG_IGN or a function/handler. What i don't understand is, when we write for example signal(SIGPROF, handler); isn't this supposed to be asynchronous? however the code is executed sequentially. So, when this function is encountered, it is executed and when a signal is raised, how does it know what to do?
This might sound foolish, bear with me.
Thanks
Rahul Gandhi
sighandler_t signal (int signum, sighandler_t action)
As per my understanding, when the signal denoted by signum occurs/is raised, the action is taken which can be either SIG_DFL, SIG_IGN or a function/handler. What i don't understand is, when we write for example signal(SIGPROF, handler); isn't this supposed to be asynchronous? however the code is executed sequentially. So, when this function is encountered, it is executed and when a signal is raised, how does it know what to do?
This might sound foolish, bear with me.
Thanks
Rahul Gandhi
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