Date: Fri, 22 Jan 2010 01:46:57 +0100 From: Pieter de Goeje <pieter@degoeje.nl> To: freebsd-questions@freebsd.org Cc: cronfy <cronfy@gmail.com> Subject: Re: Unique id of a process (not pid) Message-ID: <201001220146.57496.pieter@degoeje.nl> In-Reply-To: <d4ac64921001210902h57578954nd793fe548d533935@mail.gmail.com> References: <d4ac64921001210902h57578954nd793fe548d533935@mail.gmail.com>
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On Thursday 21 January 2010 18:02:39 cronfy wrote: > Hello, > > Is there any unique identifier of a process in FreeBSD (not PID)? > > I am trying to get list of processes and watch for changes > with kvm_getprocs(). I want to catch every process start and exit (except > those processes that were started and finished between calls to > kvm_getprocs()). > > But between calls to this function one process may exit and be replaced > with another process with the same pid and same command name. The only > difference is a start time of processes. Looks like this is a solution, but > process start time may change if system time was shifted (i. e. with > ntpdate). I can track these shifts too, but it looks to be too complex. > > Is there any simpler way to identify a process? Thanks in advance. I honestly don't know if there is such a unique identifier, but lacking that, perhaps you can achieve your goal using kqueue(2)'s EVFILT_PROC. It should do what you want and a lot more. You could also try asking freebsd-hackers@. -- Pieter de Goeje
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