Question

While running a thread program and repeatedly killing the main program using Ctrl + C, i see unexpected results in the program in second run. However, if i let the program run and voluntarily exit, there are no issues.

So, my doubt is, does Ctrl + C, kill threads also along with the main process?

Thanks in advance.

Answer 1

Well, the only thing that Ctrl + C does is sending SIGINT to one thread in the process that is not masking the signal. Signals can be handled or ignored.

If the program does handle Ctrl+C, the usual behavior is self-termination, but once again, it could be used for anything else.

In your case, SIGINT is being received by one thread, which probably does kill itself, but does not kill the others.