November 2010 - Darwin-dev - lists.apple.com

mac osx vs linux for high throughput network servers
by Joel Reymont 26 Nov '10

26 Nov '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:from:content-type :content-transfer-encoding:subject:date:message-id:to:mime-version :x-mailer; bh=aVvA4Cm5tDNTw4aq3eEf/FWAxLHGd5lK2xIac6OiK4A=; b=OJt894NpO0ErFF3gwPPGa+1yfn7AkcuO8g6H2UA1P3sTdEnymI2Libt+bn5gAu4uFG njZehOaMynCWXFBupFekruEFk4qQeaUNxxyu+tT4vbIRNgw6hYyu+TztxHcC8PaXfpPI tM+0JIcPHTwpFaSMkvAREHx9OnbUlPy+H+C/I= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:content-type:content-transfer-encoding:subject:date:message-id :to:mime-version:x-mailer; b=khqNBnZ0rqYrdRfu08leQcuPk7cd/a8vxu0mRYoyzI6G9PlsBPhx2jy6Vy9PVwo+el qVkuTtd3tdund+wC8cQ9y4yzaQuv2KZVoEfk5uZv1ZPNT4T2N5BTPSY2hg/zXpO28XiK gaqgXI7d4o1KtQ9LDcGmgbtm+kU1unxwyA3Hs= Is Mac OSX inherently slower than Linux for high-performance network servers? I'm not trolling here, I genuinely want to know. I'm familiar with Mac OSX internals and have 0 knowledge about the Linux kernel. I'd like to continue using Mac OSX and, for example, deploy headless Darwin for my server needs. Thanks, Joel --- http://twitter.com/wagerlabs _______________________________________________ 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: is it possible to find the target OS version from the binary?
by Iceberg-Dev 25 Nov '10

25 Nov '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:mime-version:in-reply-to :references:content-type:message-id:content-transfer-encoding:from :subject:date:to:x-mailer; bh=lQEQb5Oa8x/UmEobo+gEZxhhKjq049oBiNwbrUd4zNU=; b=T92WgV0R8Gm3iRXr1sdXlHdy9flSlQ9QWs0QLVhTXWhEdylzoWoiJINXjQzckG62wm eq3WE/pWITHut+SzdJEWovIEldbJHTdWoYULEefLPa4g6Xby07VM7pMmG4ylEOum1a+z QDpIzBnKgVNDqs0wlVfuVoMd1wz1kYxsY1tD0= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:content-type:message-id :content-transfer-encoding:from:subject:date:to:x-mailer; b=R2RbeCmSTooAvoqfTQCoxBfOiRVqZDGfWzfdITwsXaD/YEHEvOTtERoCxQldJi2Pvt mfEqTen7lgB5Wul7DWSP9sqoILR9V4XOYDd3oMsKtuWgC+ioik32Wu40fZK0LgERNtRz /tUNgKpfBBA1SCthUtUqrYtwH1NlMINrsDYLw= On Nov 25, 2010, at 6:50 AM, Shantonu Sen wrote: I will definitely do in the mid-term. _______________________________________________ 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… Please file an enhancement request describing the situations you would use this information, and how reliable the information has to be (for instance, if some object files are built with a deployment version of 10.5 and some 10.6, what should the final binary record?) This email sent to site_archiver(a)lists.apple.com

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Re: capturing and printing timestamps
by Jean-Daniel Dupas 25 Nov '10

25 Nov '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Le 25 nov. 2010 à 13:08, Joel Reymont a écrit : > I need to capture packets in a circular buffer and timestamp them. > > I also need to print my buffer when certain conditions are met, e.g. on error. > > What is the most convenient way to capture a timestamp for later printing as a hh:mm:ss:xxx? > > Can I convert mach_absolute_time() into a time format? > > Thanks, Joel CFAbsoluteTimeGetCurrent() or if CoreFoundation is not available, gettimeofday(). You can then use a CFDateFormatterRef or strftime() to create your string. mach_absolute_time() represents an Up Time, not a wall time. -- Jean-Daniel _______________________________________________ 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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capturing and printing timestamps
by Joel Reymont 25 Nov '10

25 Nov '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:from:content-type :content-transfer-encoding:subject:date:message-id:to:mime-version :x-mailer; bh=3jkPFDJujmHOZDaefRCTfyrZmKGXn+rLhUATDVQ/7eo=; b=mvIlQ7gRMY2MTxibXkR9J1y0jYnR6pgUmYQ3OGCo/7Uj551vvEjXUCRPrlx7wZZf+k tTQBHUKiOHXfFiB8NhgO5ZhcuobxhjOn9qfpTdI8JWXnNPy03b8a5kSKq5yul+AVTWqk aVYDTamGj9aaSpHingwy7NoaBt/Hc4oiPjFrA= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:content-type:content-transfer-encoding:subject:date:message-id :to:mime-version:x-mailer; b=m5jVoH7H62WtWBBTCL5wbZdgI1vxKgHrQ6Dmhn9Gafj1yMxTMKvtai+RG9fNd3jp9+ 1RIKB/rJvebiTRSpfON21A6csVaESbsPbxLcTOX7g9JtBhBelIyZt0Sxph0qRo4JVc2+ 0AhrfmkNCV79RoBUf7gSoRH5I7IaLHa9mCMK4= I need to capture packets in a circular buffer and timestamp them. I also need to print my buffer when certain conditions are met, e.g. on error. What is the most convenient way to capture a timestamp for later printing as a hh:mm:ss:xxx? Can I convert mach_absolute_time() into a time format? Thanks, Joel --- http://twitter.com/wagerlabs _______________________________________________ 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: is it possible to find the target OS version from the binary?
by Jean-Daniel Dupas 25 Nov '10

25 Nov '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Le 25 nov. 2010 à 10:57, Jonas Maebe a écrit : > > On 25 Nov 2010, at 06:50, Shantonu Sen wrote: > >> Please file an enhancement request describing the situations you would use this information, and how reliable the information has to be (for instance, if some object files are built with a deployment version of 10.5 and some 10.6, what should the final binary record?) > > Is that information part of individual object files? I thought the -mmacosx-version-min parameter was passed on to the linker, but not used otherwise by gcc or the the assembler. > The compiler use this flag to define the __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED macro which may change the code generation. The most obvious example is symbols that are conditionally defined weak. But it also change which symbols are used when there is available variants ($UNIX2003, $NOCANCEL, etc.) -- Jean-Daniel _______________________________________________ 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: is it possible to find the target OS version from the binary?
by Jonas Maebe 25 Nov '10

25 Nov '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On 25 Nov 2010, at 06:50, Shantonu Sen wrote: Jonas _______________________________________________ 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… Please file an enhancement request describing the situations you would use this information, and how reliable the information has to be (for instance, if some object files are built with a deployment version of 10.5 and some 10.6, what should the final binary record?) Is that information part of individual object files? I thought the - mmacosx-version-min parameter was passed on to the linker, but not used otherwise by gcc or the the assembler. This email sent to site_archiver(a)lists.apple.com

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Re: is it possible to find the target OS version from the binary?
by Shantonu Sen 25 Nov '10

25 Nov '10

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Re: is it possible to find the target OS version from the binary?
by Iceberg-Dev 23 Nov '10

23 Nov '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:mime-version:in-reply-to :references:content-type:message-id:content-transfer-encoding:from :subject:date:to:x-mailer; bh=CL5Sk5KFw9m/46fxo7aWxGTR6ZcIIsO0EUpfPsjnpDQ=; b=c3KCRsjJMnhT6C1Z+fC+9+lsl4f1lZ5E7jaU2T+ZdlAUiRCjLx9JYqghynrT9Caef9 IecElHoQHgwwPC3BZdh7s64w6euBs6FokkrGtcgoEW6j9Qjc6CKcMnZfUjoZ3DTSnTEt 6SnHeL+vgM5cyPs9yTeBvehApSZ0xzG+uKCC4= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:content-type:message-id :content-transfer-encoding:from:subject:date:to:x-mailer; b=JkmtdXhwjcJoli6oOkgq+cVbfjV5S5rsMoqTwdW7BSrTsmi0/lyQW+K2ex7dNl1RSv 69U+VKICt5yIgJC92CTBaK7tBnSJENgwyEKe0y1PukI2psOVo330zFh+yrMBRm7Pb5c8 rKw/9XO9ULT8DnHqVwbRAZgfK0BzJAyQXbG8c= On Nov 23, 2010, at 2:00 AM, Shantonu Sen wrote: Not really. What are you trying to do? _______________________________________________ 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… If you build against the 10.6 sdk but use -mmacosx-version- min=10.4, the load commands will record the 10.6 dylib info. I'm trying to automatically check that the executable of a .app bundle is coherent with what is defined in the Info.plist file for the minimum OS version of each architecture. This email sent to site_archiver(a)lists.apple.com

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Re: Will sleep/wake notification handles close themselves at process termination?
by Soren Spies 23 Nov '10

23 Nov '10

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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Will sleep/wake notification handles close themselves at process termination?
by Julian Hsiao 23 Nov '10

23 Nov '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com I'm writing a very simple program that processes sleep/wake notifications based on the sample codes in QA1340, and I'm wondering if I don't call IODeregisterForSystemPower(), IOServiceClose(), and IONotificationPortDestroy() before exiting, will I leak kernel resources? And if clean up is not optional, is there a way to "name" the handles so that if my program terminated abnormally, I can still clean up the leaks afterward? Thanks. _______________________________________________ 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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