> > Message: 9 > Date: Tue, 23 Nov 2010 05:16:58 -0500 > From: Bill Cheeseman <wjcheese...@gmail.com> > Subject: Re: Odd problem with event taps when job is killed > To: Cocoa-Dev Mail Cocoa-Dev <cocoa-dev@lists.apple.com> > Message-ID: <80e43f4f-a032-4452-bb1f-80f7b7bf7...@gmail.com> > Content-Type: text/plain; charset=us-ascii > > > On Nov 22, 2010, at 5:14 PM, George Nachman wrote: > > > I recently added an event tap to my program. Since doing that, there is a > > strange behavior: when I kill my job (usually by making a change in Xcode > > and pressing cmd-Enter, being prompted to kill the job, and selecting > OK), > > it will repeat back the last 10-20 keypresses as or after it dies > > > You have to uninstall an event tap when you're through with it. Perhaps you > aren't uninstalling it, and it lives on? > > Apple engineer Mike Paquette explained how to do this in messages to the > quartz-dev mailing list on 2007-03-18 and 2008-02-12: > > CFMachPortInvalidate(tapMachPortRef); // switches off the event tap; > invalidates tapRunLoopSourceRef, too, and drops retain counts on both by 1 > so the CFRelease will release the objects and not leak > CFRunLoopRemoveSource(CFRunLoopGetCurrent(), tapRunLoopSourceRef, > kCFRunLoopCommonModes); > CFRelease(tapRunLoopSourceRef); > CFRelease(tapMachPortRef); > > -- > > Bill Cheeseman - b...@cheeseman.name > > > > Apologies for the delay, I was on vacation. I narrowed down the problem a bit, and that solution would not work. The problem occurs when you do this:
1. Start program in debugger 2. Program registers an event tap 3. Break the program (for example, by choosing Pause from the Run menu in Xcode, or pressing ^C in gdb) 4. Type some stuff 5. Kill the program 6. Everything you typed after step 5 is repeated by the "ghost". My program never has a chance to remove its event tap. Luckily this won't affect users, so I guess I will shake my fist at the universe and move on :) _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
