Number of files that are kept open by a certain process

[aryan_]

Hi All,

How can I get the number of files that are kept open by a certain process at a certain time using C++ ?

I want to call the Linux system function that provides me with that information from within C++ source code, for which the number of open files kept open by itself matters to me.

By the way, this C++ source code continuously opens up new files for writing.

Thanks.

[Lakshmipathi]

I'm not sure whether any system calls available to fetch this detail.
But you can parse /proc/[pid]/fd to know how many files are used by the process denoted by pid.

[chris123a]

I know the lsof command that will show open handles and the process.

[Lakshmipathi]

thanks chris123a,Yes lsof command should work. But you need a function , then explore the source code lsof