Open file handles

[D. Alvarado]

Hi,
Is there a call or a series of calls I can make to find out how
many open file handles exist (files opened by the currently running
Java program) at any one time during the execution of my Java program?
I am using JVM 1.4 on Solaris.

Thanks - Dave

 

[Gordon Beaton]

Is there a call or a series of calls I can make to find out how many
open file handles exist (files opened by the currently running Java
program) at any one time during the execution of my Java program? I
am using JVM 1.4 on Solaris.

I hope you only need this for debugging purposes, because there isn't
a platform independent way to get the information and it doesn't seem
like something you should need to do in any normal application.

On Solaris /proc/pid/fd has an entry for each open descriptor held by
the process. Similarly on Linux, but there you can also use
/proc/self/fd from the process in question (determining the pid is
difficult from inside Java).

/gordon