From: Daniel Berger <Daniel.Berger@...>
Date: 2005-12-09T01:04:40+09:00
Subject: Re: Retrieving PID running time

gwtmp01@mac.com wrote:
> 
> On Dec 8, 2005, at 10:14 AM, Philip Rhoades wrote:
> 
>> Yes, but what I want (in Ruby) is something like:
>>
>> ptime = Process.pid.time
>>
>> How can I do that?
> 
> 
> This sort of thing is very platform specific.  I'm assuming
> a unix/linux/macosx environment.  I can't answer for Windows.
> 
> For your own process you can use Process::times, which
> probably ends up calling getrusage(), a kernel system
> call.  See the Ruby doc for Process::times, and your system
> docs for getrusage.
> 
> For the general problem of finding the information for
> an arbitrary process it becomes more difficult.  Some unix
> systems make that sort of information available via the
> /proc file system.  Some make it available via the sysctl
> system calls.
> 
> In either case, I don't think there is a standard Ruby library
> for parsing /proc or for extracting sysctl values.  You would
> have to role your own.

<snip>

It's not in the standard library, but there is sys-proctable, available on the RAA.

Regards,

Dan