Is there a way to hold the finish of a program so that /proc/<pid>/maps can be accessed?

[Peng Yu]

Hi,

Once I run a program, I want be able to cat /proc/<pid>/maps (on
Linux). But the program may finish before /proc/<pid>/maps is
accessed.

Is there a way to hold the execuration of the program to give enough
time to access /proc/<pid>/maps? In terms of psuedo code (in one
script), it looks like something like this. Is there a way to do this?
Thanks.

start_and_hold_program myprog &
pid=$!
cat /proc/$pid/maps
let_it_finish $pid

-- 
Regards,
Peng