July 2007 - Darwin-dev - lists.apple.com

Re: open() fails to update st_mtime when used with O_TRUNC and 0 byte files
by Mike Frysinger 11 Jul '07

11 Jul '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=tw4jSJxTW8ZAlPgzJ/+r9V3x/qnEhEHhX+uwt322eB7m0YiMq22VZ+IdeN7ThwNOhTgCW7WHridORvIzw6BwvWbg1YXh6bI+9qwjxKEcOM3BIdx/NNd6iTQjdMzY3NY/QrOvkzEOrt2o8aiSD7Hp7oA5LHh7BFb/p4o9m8M6ANc= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=efRP2Ti5wOIny70v1CIfw8fEyoq2xvUo9IWdJWyFTM5Y2soPKq7Il9fi66YrfD3I/QIWDH1AtmMkX/7wyTDgwgJpNuzWTLPyAqci5H5ZRaql+LlhiZU9bgNxjVM8tNgqXWjAQCtRA4bQ5bP3/lKkDOq+wEVTJKcDg54W4P1AqZ4= On 7/9/07, Terry Lambert <tlambert(a)apple.com> wrote: > Maybe you could get them to add it as a test case for the test suite, > if they (specifically, The Austin Group, actually) agreed with your > interpretation of the standard. so the answer to my query on the Austin Group mailing list is that the way ive interpreted the standard is the correct interpretation ... POSIX conforming systems must: - update st_mtime when opened with O_TRUNC regardless of the size of the file before hand - make sure st_ctime/st_mtime are properly available at the next relevant point in time (like when calling stat() or fstat()) and i've been informed that a test already exists that should match the behavior i'm describing: POSIX.os/files/open 19 i'm testing 10.4.x and not 10.5 (which is the version that was certified), so perhaps 10.5 has already been fixed ? -mike _______________________________________________ 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… On 7/10/07, Mike Frysinger <vapier.adi(a)gmail.com> wrote: i'll look into getting a test added to the POSIX testsuite This email sent to site_archiver(a)lists.apple.com

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Re: undefined symbols _JNI_CreateJavaVM
by Greg Parker 11 Jul '07

11 Jul '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com See these references for important details: Invoking the Java Virtual Machine from Native Code http://developer.apple.com/technotes/tn2005/tn2147.html#TNTAG31 simpleJavaLauncher sample code http://developer.apple.com/samplecode/simpleJavaLauncher/index.html java-dev mailing list http://lists.apple.com/mailman/listinfo/java-dev -- Greg Parker gparker(a)apple.com Runtime Wrangler _______________________________________________ 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… There is function "JNI_CreateJavaVM" defined in the Java's libserver.dylib (where the libjvm.dylib link to on my system). Which should I use instead to launch JVM through my code? Short answer: link to JavaVM.framework (`-framework JavaVM`) and call JNI_CreateJavaVM(). This email sent to site_archiver(a)lists.apple.com

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Re: undefined symbols _JNI_CreateJavaVM
by Finlay Dobbie 11 Jul '07

11 Jul '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:reply-to:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=IOmrBMVLyd7kYEkKiEJh0ZyalQgxJvyN48pe13b7UPZzEJtdtGbZf9PI5hMR6UKG/6abpk545MpupK+OwPJ1jzEZbNQVsIHV49/Xdfu6Kqcr58CGVNNolcvzY/0XXMnekUnw1AqWp7ABFKg5SSUF3sQ7G3vJLJWpsM/g2kOxLWE= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:reply-to:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=hNd7u75fJ/rsmJmzAWu3xenrn+x2nWnfxyJHR/Ke/CbF0EDXLzOZdRyVBVKmsFxe9AMVerjvJGnPtMOwKkxHaMuPKE4H17zlGYb1BdSBb35Y6Lu8+Pm7vCNN1tceIndNok5hZ5PoWOX8Egi4dU1f8NsO2pqI0rq0W3ocDgIChxU= Don't link to the library directly, link to the framework ( -framwork JavaVM instead of -ljavalibrary or whatever). Also, Java is not part of Darwin. Tools questions are better suited to the xcode-users mailing list. -- Finlay Hi! Shawn & all, I did link to /System/Library/Frameworks/JavaVM.framework/Libraries/libjvm.dylib (which is symbolic linked to libserver.dylib) Any further suggestion? Heidi --- Shawn Erickson <shawnce(a)gmail.com> wrote: > On 7/10/07, Heidi Zhou <heidi_zhou(a)yahoo.com> wrote: > > Hello! > > > > There is function "JNI_CreateJavaVM" defined in > the > > Java's libserver.dylib (where the libjvm.dylib > link to > > on my system). > > > > Which should I use instead to launch JVM through > my > > code? > > I believe you should link against the > JavaVM.framework IIRC (sorry > don't have a project in front of me at the moment). > > -Shawn > Heidi ~~ Life is a song of my heart. ~~ http://photos.yahoo.com/heidi_zhou ____________________________________________________________________________________ Park yourself in front of a world of choices in alternative vehicles. Visit the Yahoo! Auto Green Center. http://autos.yahoo.com/green_center/ _______________________________________________ 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/finlay.dobbie%40gmail.com This email sent to finlay.dobbie(a)gmail.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… On 11/07/07, Heidi Zhou <heidi_zhou(a)yahoo.com> wrote: This email sent to site_archiver(a)lists.apple.com

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Re: undefined symbols _JNI_CreateJavaVM
by Heidi Zhou 11 Jul '07

11 Jul '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-ID; b=qF4RRj4ghJJ9dfxKTHstEIeM15yYdN9/GvcVK02Gx1Pa6ulasIgRyHWzNb+SHgy6MIFAYcS3xmLsp2DoGp3ssw3WMzc4jPvZctnOdCQkiav7iOF9msSo0YPaDS3yyyQLF3GQBRAxg7NrYqn5kuZGRWI17ZKQy+uC9j9G54mvMsU=; Hi! Shawn & all, I did link to /System/Library/Frameworks/JavaVM.framework/Libraries/libjvm.dylib (which is symbolic linked to libserver.dylib) Any further suggestion? Heidi --- Shawn Erickson <shawnce(a)gmail.com> wrote: > On 7/10/07, Heidi Zhou <heidi_zhou(a)yahoo.com> wrote: > > Hello! > > > > There is function "JNI_CreateJavaVM" defined in > the > > Java's libserver.dylib (where the libjvm.dylib > link to > > on my system). > > > > Which should I use instead to launch JVM through > my > > code? > > I believe you should link against the > JavaVM.framework IIRC (sorry > don't have a project in front of me at the moment). > > -Shawn > Heidi ~~ Life is a song of my heart. ~~ http://photos.yahoo.com/heidi_zhou ____________________________________________________________________________________ Park yourself in front of a world of choices in alternative vehicles. Visit the Yahoo! Auto Green Center. http://autos.yahoo.com/green_center/ _______________________________________________ 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: undefined symbols _JNI_CreateJavaVM
by Shawn Erickson 11 Jul '07

11 Jul '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=KCfnRVfC4YyMAg+otufIFvSNnNbe0f9JmW6DNAxjUvS4fgG6q+2thcn/U6Xv+V2Mg7UvxPSQsPAVzch6QLu85S/KkqrfrLxZI6IuSV17pTVG+m0kXxLHNJmqRvDV7ZwLPtDTpY0dULqUG/i+kOHazPoLqAyTyb1/TfhUyHXMZ68= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=XjxfQpw4srBTakQQ7bHzD2RtE9sPlM6YAO5E0O5xjNDKivFgJnHdZkAoyCflhHZlGuP3OVIQW4AsM9Cc2E4Igz7dCDFag1d0mDU5I1Ty2LDuemnP2ZvHgoTB6Ul1b2tU4AqKMYEX6IvTO7WlEpNbTugRU4VAU4w8P+iLT0OTgxg= Hello! There is function "JNI_CreateJavaVM" defined in the Java's libserver.dylib (where the libjvm.dylib link to on my system). Which should I use instead to launch JVM through my code? I believe you should link against the JavaVM.framework IIRC (sorry don't have a project in front of me at the moment). -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… On 7/10/07, Heidi Zhou <heidi_zhou(a)yahoo.com> wrote: This email sent to site_archiver(a)lists.apple.com

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undefined symbols _JNI_CreateJavaVM
by Heidi Zhou 11 Jul '07

11 Jul '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:Date:From:Subject:To:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-ID; b=eSP0Z/p9B6R2WQdEOZOwjAlCRZlVn8vhHA19iyxDU9AfSyo8NUfh/vyohzT9gzSYhcDO9I0TvYJSbSS4gR6GGzmflArgE9j24SlUP3P4iUzW1ce59iUwTxEsRO6H0lmpAOGQAPDuF3kylPitKdutfmLfs6iWX6GCPiZzaVQjQog=; Hello! There is function "JNI_CreateJavaVM" defined in the Java's libserver.dylib (where the libjvm.dylib link to on my system). Which should I use instead to launch JVM through my code? The version of Java I am using is $java -version java version "1.5.0_07" Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_07-164) Java HotSpot(TM) Client VM (build 1.5.0_07-87, mixed mode, sharing) Do I have to use EE for this kind of useage? Thank you. Heidi ____________________________________________________________________________________ Get the free Yahoo! toolbar and rest assured with the added security of spyware protection. http://new.toolbar.yahoo.com/toolbar/features/norton/index.php _______________________________________________ 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: Monitoring swapping ...
by Peter O'Gorman 10 Jul '07

10 Jul '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Tue, 2007-07-10 at 12:51 -0700, Jay Reynolds Freeman wrote: > I am not completely sure this is the correct list, but ... > > I have an application that uses enough memory (Gigabytes) > that it sometimes slows way down because of swapping. I'd like > to be able to tell the user when that happens, so the user will not > give up in disgust. My application is threaded, and the swapping > generally takes place in one particular thread, so I could in > principle have another thread monitor and report. But I am > not familiar enough with low-level Unix memory-management stuff > to know whether there is any way to track what is going on, or > even where to start to look. > > Can anyone offer advice or suggestions? > See the man page for getrusage. There are very likely ways that you can reduce swapping in your application. You should look into that first. Peter _______________________________________________ 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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Monitoring swapping ...
by Jay Reynolds Freeman 10 Jul '07

10 Jul '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com I am not completely sure this is the correct list, but ... I have an application that uses enough memory (Gigabytes) that it sometimes slows way down because of swapping. I'd like to be able to tell the user when that happens, so the user will not give up in disgust. My application is threaded, and the swapping generally takes place in one particular thread, so I could in principle have another thread monitor and report. But I am not familiar enough with low-level Unix memory-management stuff to know whether there is any way to track what is going on, or even where to start to look. Can anyone offer advice or suggestions? (The application's design pattern is model-view-controller. The model is in one thread; it is pretty much straight C++, and that's where the swapping takes place. The view and controller use another thread or two; They are pretty conventional Cocoa/Objective-C/Interface-Builder, and that's where it would be easiest to track swapping and report to the user.) Thanks. -- Jay Reynolds Freeman --------------------- Jay_Reynolds_Freeman(a)mac.com http://web.mac.com/jay_reynolds_freeman (personal web site) _______________________________________________ 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: open() fails to update st_mtime when used with O_TRUNC and 0 byte files
by Mike Frysinger 10 Jul '07

10 Jul '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=V3cJnuCzpvxmKCgjNZv6gXqikJhhV6NYfyzIhbYt1wsjMG27eUfm50YO+CVfSY9YzcoeTsJ9uAEdipFfDQN7wKDXh916L2S6ba2oBONW2MppMvVEVigVIKrRuMBRUgvhzFMOr+92NK9xU2bW9kKf6CrHmj1rxq+Qw65aS+Zh/AU= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=Sddviuu97bRaCslVI4HpGzdOnYmPeDZk8YKVFUtdCi3bt17Ayf8lJTC8ORS+XBef2Gn+drrCEKhsh8U9P1DZX9KrJHtU7OLE0Us2Pj8MZgWVmOk01pdxfXj86ggykMJf/mBOWy/TDc2X0pOyKoOrM7Px0udvi0dmqtUTcAfa/BY= Maybe you could get them to add it as a test case for the test suite, if they (specifically, The Austin Group, actually) agreed with your interpretation of the standard. so the answer to my query on the Austin Group mailing list is that the way ive interpreted the standard is the correct interpretation ... POSIX conforming systems must: - update st_mtime when opened with O_TRUNC regardless of the size of the file before hand - make sure st_ctime/st_mtime are properly available at the next relevant point in time (like when calling stat() or fstat()) i'll look into getting a test added to the POSIX testsuite -mike _______________________________________________ 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… On 7/9/07, Terry Lambert <tlambert(a)apple.com> wrote: This email sent to site_archiver(a)lists.apple.com

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Re: open() fails to update st_mtime when used with O_TRUNC and 0 byte files
by Jonas Maebe 10 Jul '07

10 Jul '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On 10 Jul 2007, at 15:56, Shawn Erickson 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… Apple never stated that their bug system was open. Like most companies they keep it private... and I thank them for that because I have a few defects filed that reveal information about a product I am working on. That particular issue could be solved easily by letting the submitter mark whether the bug report can be public or not. And in some cases, they do have public bug trackers and follow-up, like on webkit.org. In the very beginning, the Darwin bug tracker was also public, but this was abandoned after a while. This email sent to site_archiver(a)lists.apple.com

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