Can a C program continue execution after a signal is handled?

Question

I\'m new at signal handling in Unix through C and I have been looking at some tutorials on it (out of pure interest).

My questions is, is it possible to continue exe

Answer 1

In general, yes, execution continues after the handler returns. But if the signal was caused by a hardware error (such as a floating point exception or a segmentation fault), you have no way of undoing that error, and so your program will be terminated regardless.

In other words, you have to distinguish between signals and things that cause signals. Signals by themselves are perfectly fine and handlable, but they don't always let you fix errors that cause signals.

(Some signals are special, such as ABRT and STOP, in the sense that even if you just raise such a signal manually with kill, you still can't "prevent its effects". And of course KILL cannot even be handled at all.)