Rob Lockstone wrote: > The preferred way to launch processes at boot/login in OS X since 10.4 > is to use launchd. > From <http://developer.apple.com/MacOsX/launchd.html>, "/The launchd > daemon takes over many tasks from cron, xinetd, mach_init, and init, > which are UNIX programs that traditionally have handled system > initialization, called system scripts, run startup items, and > generally prepared the system for the user./" > > All well and good. It's a nice service and reasonably easy to manage, > especially when using something like > Lingon <http://www.macupdate.com/info.php/id/19879/lingon>. However, > launchd has one feature that is annoyingly incompatible with Resin > 4.x; it kills all child processes that the first process started when > the first process exits.
Thanks. I've added this as a bug report. It might be possible to add a "watchdog" argument like "console" for Mac (I'm not sure if the JNI will get properly loaded in that case, but I'm sure there's a way to work around it.) -- Scott > > Unfortunately, from what I can tell, this is exactly what Resin 4.x > does. The ResinBoot class is responsible for creating the WatchDog > process, and the WatchDog is what creates and then monitors the main > Resin process, but after the WatchDog starts, ResinBoot exits so > launchd kills the child processes. > > So what's a girl to do? I don't know. I'm not a girl. But here's what > I did. > > Buried down in an Apple Developer Connection document, /Daemons and > Agents/, is a section titled "Careful With That Fork, Eugene" > <http://j.mp/bHw3XZ>. That's the section that explains how launchd > will kill child processes if the original process exits. But it also > lists a few work-arounds. The first two are specific to daemon and > probably not doable for Resin, at least not without mucking around > with Resin and rebuilding it. But the third, and of course > the "least-preferable" by Apple's standards, is to use the > AbandonProcessGroup property in Resin's startup plist file. > > Success! > > Once you have your .plist file created (easy with Lingon), you can > either edit it directly (it should be in /Library/LaunchDaemons), or > within Lingon switch into "Expert Mode" and choose the > /AbandonProcessGroup/ parameter from the "Insert parameter..." drop > down. It will look like this in the plist file: > > <key>AbandonProcessGroup</key> > <true/> > > Here's the definition of AbandonProcessGroup: > > AbandonProcessGroup <boolean> > When a job dies, launchd kills any remaining processes with the > same process group ID as the job. Setting this key to true disables > that behavior. > > I can't say this is the best/only solution, but it worked for me. > > Rob > > ------------------------------------------------------------------------ > > _______________________________________________ > resin-interest mailing list > resin-interest@caucho.com > http://maillist.caucho.com/mailman/listinfo/resin-interest > _______________________________________________ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest
