Signals for pause/unpause a process

Question

Is there a signal what can be given from a father process to pause a child process?If so,what is the signal to unpause again?

Not in standard C, no. Please edit your question and specify the system used, otherwise this can't be answered. — Lundin, Mar 19 '19 at 11:50

score 0 · Answer 1 · answered Mar 19 '19 at 11:34

0

SIGSTOP and SIGCONT. Man page on signal can explain more.

answered Mar 19 '19 at 11:34

anand

score 0 · Answer 2 · answered Mar 19 '19 at 11:40

You can use SIGSTOP and SIGCONT:

SIGSTOP is a signal sent programmatically (eg: kill -STOP pid ) while SIGTSTP (for signal - terminal stop) may also be sent through the tty driver by a user typing on a keyboard, usually Control-Z.
SIGSTOP cannot be ignored. SIGTSTP might be.

Remember that both signals are designed to suspend a process which will be eventually be resumed with SIGCONT

You can also check the official manual for further info!

I advise you to check this, as it is a similar question to yours, and there are a lot of resources there!

2 Answers2