January 2006 - Darwin-dev - lists.apple.com

How to lock a volume of a drive
by pranab.halder＠wipro.com 12 Jan '06

12 Jan '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Thread-index: AcYXgLJDAnJYOaTpRACuTXZ7TRj5Cw== Thread-topic: How to lock a volume of a drive _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Re: IONotificationPortRef cleanup
by Steve Checkoway 10 Jan '06

10 Jan '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com - Steve _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com On Jan 10, 2006, at 2:35 PM, Chris Sarcone wrote: To be completely clear about this, these leaked ports are not reclaimed when the application exits? Mach will clean them up for you at task termination. However, whenever you don't need the resource, you should do the proper thing to release it. Thank you for the clarification. It seems to me that the example should be changed to simply _exit(2) since the ports will be cleaned up. smime.p7s

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Re: IONotificationPortRef cleanup
by Garth Cummings 10 Jan '06

10 Jan '06

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Re: IONotificationPortRef cleanup
by Chris Sarcone 10 Jan '06

10 Jan '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Re: IONotificationPortRef cleanup
by Steve Checkoway 10 Jan '06

10 Jan '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com smime.p7s

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Re: IONotificationPortRef cleanup
by Garth Cummings 10 Jan '06

10 Jan '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Re: CrashReporter, signals and exception ports
by Jean-Francois Im 09 Jan '06

09 Jan '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Mozilla Thunderbird 1.0.7 (Macintosh/20050923) We do this just with a signal handler. We catch: static int signals[] = { SIGALRM, SIGBUS, SIGFPE, SIGHUP, SIGILL, SIGINT, SIGABRT, SIGQUIT, SIGSEGV, SIGTRAP, SIGTERM, SIGVTALRM, SIGXCPU, SIGXFSZ, #if defined(HAVE_DECL_SIGPWR) && HAVE_DECL_SIGPWR SIGPWR, #endif -1 }; And then we set up the signal handlers using: struct sigaction sa; sa.sa_flags = 0; if( p != NULL ) sa.sa_flags |= SA_ONSTACK; sa.sa_flags |= SA_NODEFER; sa.sa_flags |= SA_SIGINFO; sigemptyset(&sa.sa_mask); /* Set up our signal handlers. */ sa.sa_sigaction = SigHandler; for( int i = 0; signals[i] != -1; ++i ) sigaction( signals[i], &sa, NULL ); [snip] Thanks for the pointer, I'll investigate it. Jean-Francois Im _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… Steve Checkoway wrote: where p is the pointer to our signal stack set up with sigaltstack. Doing this we can shut down the full screen graphics context and perform any other clean up. We actually give a stack trace (among other things) ourself and setting the handlers seems to prevent the Crash Reporter from running. We didn't have to do anything with exception ports to get this to work. Aha! Reading the CrashReporter documentation seems to hint that setting a signal handler using signal(3) doesn't work. This email sent to site_archiver(a)lists.apple.com

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Re: 15 decimal C type
by Shawn Erickson 09 Jan '06

09 Jan '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Jan 8, 2006, at 4:21 PM, Jeshua Lacock wrote: >From man printf -Shawn _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… Or is fprintf doing the rounding? f The argument is printed in the style [-]ddd.ddd where the number of d's after the decimal point is equal to the preci- sion specification for the argument. If the precision is missing, 6 digits are given; if the precision is explicitly 0, no digits and no decimal point are printed. This email sent to site_archiver(a)lists.apple.com

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15 decimal C type
by Jeshua Lacock 09 Jan '06

09 Jan '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Greetings, I am parsing some numbers with 15 decimal places, with: fscanf(inf,"%lf,%lf", &xCor, &yCor); with the input numbers: 569850.000000500003807,4900023.634829379618168 become rounded when output with: fprintf (outf, "%lf,%lf\n", xCor, yCor); to: 569850.000001,4900023.634829 Thanks, Jeshua Lacock ___________________________ Programmer/Owner Phone: 877.240.1364 http://OpenOSX.com Fax: 415.462.6211 -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… I thought that I would want to use the "long double" ctype, but it apparently only supports 6 decimals? Or is fprintf doing the rounding? Can anyone recommend a "C type" for 15 decimals on Darwin? I certainly would appreciate it! This email sent to site_archiver(a)lists.apple.com

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IONotificationPortRef cleanup
by Steve Checkoway 07 Jan '06

07 Jan '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com - Steve _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com The USBPrivateDataSample <http://developer.apple.com/samplecode/ USBPrivateDataSample/listing1.html> takes great pains to ensure that the IONotificationPortRef is destroyed in the event of SIGINT. The comment reads, "We clean up so that we don't leak." Is it required to cleanup by calling IONotificationPortDestroy and will not doing so leak notification ports? smime.p7s

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