Getting CPU Usage of a running child process

[Arijit Das]

The times() function gets me the system/user CPU usage of me (invoking
process) and all my terminated/waited children.

Is there any User Space API/way for me (a process) to get the
system/user CPU usage of one of my currently running child process? Am
looking for a portable solution...not sure if there is any

Thanks,
Arijit
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