On 25 Jul 08, at 22:58, Sumner Trammell wrote:
Hi. A daemon process is running independently of my Cocoa app.
Given a pid
file of the daemon process in a known location, say /var/run/
somedaemon.pid,
I would like my Cocoa app to read that file and check the process
table to
see if the daemon is actually running. If the daemon IS running, I
want my
Cocoa app to change its Dock icon.
Is there a canonical Cocoa way of doing this? Using NSTask and
NSPipe to run
/bin/ps seems like a kludge.
Not Cocoa, but take a look at what the kill() syscall does when given
a signal of 0. This won't let you check WHAT process is running, but
it will let you check whether SOME process is running with that PID,
which is generally good enough.
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