Dear All,
An application task T1has registered a signal handler for
SIGALRM. Time period is set to 10 ms. For every 10 millisecond the signal
handler registered by task T1 gets executed.
What I understand from the kernel side is: Whenever the timer expires,
kernel will set a bit(14 bit position) in the *pending *field of type *struct
sigpending* present in *task_struct* of the task T1. Then, when the
scheduler schedules task T1, the signal pending field is parsed and the
appropriate signal handler is executed.
There is a time difference *t *between the time *t1-*at which the pending
signal is set and the time *t2-*at which exact signal handler is executed.
Question: I need to calculate the time difference between t1 and t2.
Please help in indentifying the kernel function responsible to set the bit
in the pending field on timer expiry and the kernel function which is
responsible to organise the execution of the signal handler.
Regards,
Prabhu
