probe::signal.procmask — Examining or changing blocked signals
Name of the probe point
Indicates how to change the blocked signals; possible values are SIG_BLOCK=0 (for blocking signals), SIG_UNBLOCK=1 (for unblocking signals), and SIG_SETMASK=2 for setting the signal mask.
The old address of the signal set (sigset_t)
The actual value to be set for sigset_t (correct?)
The address of the signal set (sigset_t) to be implemented