February 2008 - Darwin-kernel

Re: Ascertaining dirty pages
by Vincent Coetzee 18 Feb '08

18 Feb '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Hi Steven, Thanks anyway Vincent On 18 Feb 2008, at 3:38 PM, Steven Bytnar wrote: man vmmap vmmap has been around since at least 10.2. Here's an example of the output: % vmmap -pages screen Virtual Memory Map of process 5755 (screen) Output report format: 2.2 -- 32-bit process ==== Legend SM=sharing mode: COW=copy_on_write PRV=private NUL=empty ALI=aliased SHM=shared ZER=zero_filled S/A=shared_alias REGION TYPE [ VIRTUAL] =========== [ =======] MALLOC [ 2582] STACK GUARD [ 14344] Stack [ 2048] __DATA [ 139] __LINKEDIT [ 1149] __PAGEZERO [ 1] __TEXT [ 596] shared memory [ 2] --Steve Dear List, Thanks in advance Vince _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/sbytnar%40kagi.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… I am aware of vmmap, but perhaps I did not make the nature of my problem very clear. My application needs to know about these pages, and needs to be able to access information about the pages. Additionally vmmap does not tell one which pages are dirty, ,it just tells you about virtual memory allocated to a process. I need to know on a page by page basis (i.e. currently 4096 bytes per page) which pages have been written to and the exact address of the changes within the page. ==== Non-writable regions for process 5755 __PAGEZERO 00000000-00001000 [ 1] ---/--- SM=NUL .../bin/screen __TEXT 00001000-00046000 [ 69] r-x/rwx SM=COW .../bin/screen __LINKEDIT 0004e000-00051000 [ 3] r--/rwx SM=COW .../bin/screen STACK GUARD 00051000-00052000 [ 1] ---/rwx SM=NUL STACK GUARD 00053000-00054000 [ 1] ---/rwx SM=NUL STACK GUARD 00068000-00069000 [ 1] ---/rwx SM=NUL STACK GUARD 0006a000-0006b000 [ 1] ---/rwx SM=NUL __TEXT 8fe00000-8fe31000 [ 49] r-x/rwx SM=COW / usr/lib/dyld __LINKEDIT 8fe68000-8fe76000 [ 14] r--/rwx SM=COW / usr/lib/dyld __TEXT 91a5c000-91bf6000 [ 410] r-x/r-x SM=COW ...tem.B.dylib __TEXT 93735000-93767000 [ 50] r-x/r-x SM=COW ...s.5.4.dylib __TEXT 93ff4000-94000000 [ 12] r-x/r-x SM=COW ...c_s.1.dylib __TEXT 9611c000-96122000 [ 6] r-x/r-x SM=COW ...mon.A.dylib __LINKEDIT 96e6e000-972da000 [ 1132] r--/r-- SM=COW ...mon.A.dylib STACK GUARD bc000000-bf800000 [ 14336] ---/rwx SM=NUL STACK GUARD fffec000-ffff0000 [ 4] ---/rwx SM=NUL shared memory ffff8000-ffffa000 [ 2] r-x/r-x SM=SHM ==== Writable regions for process 5755 __DATA 00046000-0004e000 [ 8] rw-/rwx SM=COW .../bin/screen MALLOC (freed?) 00052000-00053000 [ 1] rw-/rwx SM=PRV MALLOC_LARGE 00054000-00068000 [ 20] rw-/rwx SM=COW ...ne_0x100000 MALLOC (freed?) 00069000-0006a000 [ 1] rw-/rwx SM=COW MALLOC_TINY 00100000-00200000 [ 256] rw-/rwx SM=PRV ...ne_0x100000 MALLOC_TINY 00200000-00300000 [ 256] rw-/rwx SM=COW zone_0x0 MALLOC_SMALL 00800000-01000000 [ 2048] rw-/rwx SM=PRV ...ne_0x100000 __DATA 8fe31000-8fe68000 [ 55] rw-/rwx SM=COW / usr/lib/dyld __DATA a0336000-a0377000 [ 65] rw-/rwx SM=COW ...tem.B.dylib __DATA a0767000-a0770000 [ 9] rw-/rwx SM=COW ...s.5.4.dylib __DATA a0890000-a0891000 [ 1] rw-/rwx SM=COW ...c_s.1.dylib __DATA a0c02000-a0c03000 [ 1] rw-/rwx SM=COW ...mon.A.dylib Stack bf800000-c0000000 [ 2048] rw-/rwx SM=COW thread 0 ==== Summary for process 5755 ReadOnly portion of Libraries: Total=6980K resident=6700K(96%) swapped_out_or_unallocated=280K(4%) Writable regions: Total=18.3M written=224K(1%) resident=356K(2%) swapped_out=0K(0%) unallocated=18.0M(98%) On Mon, Feb 18, 2008 at 01:43:00PM +0200, Vincent Coetzee wrote: I am hoping someone on these lists can assist me with my little problem. If the problem is not appropriate to these lists, could someone please point me in the right direction. I have a requirement to know which memory pages (allocated by my application) have been written to during the execution of my application, I also need to know the addresses of the areas of the pages that have been changed. I have spent hours perusing the BSD and Darwin documents without finding anything that seems to allow for this. Does anyone know how to do this or can suggest something please, I am at my wits end. This email sent to sbytnar(a)kagi.com This email sent to site_archiver(a)lists.apple.com

1 0

Re: Ascertaining dirty pages
by Steven Bytnar 18 Feb '08

18 Feb '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com User-agent: Mutt/1.4i man vmmap vmmap has been around since at least 10.2. Here's an example of the output: % vmmap -pages screen Virtual Memory Map of process 5755 (screen) Output report format: 2.2 -- 32-bit process ==== Non-writable regions for process 5755 __PAGEZERO 00000000-00001000 [ 1] ---/--- SM=NUL .../bin/screen __TEXT 00001000-00046000 [ 69] r-x/rwx SM=COW .../bin/screen __LINKEDIT 0004e000-00051000 [ 3] r--/rwx SM=COW .../bin/screen STACK GUARD 00051000-00052000 [ 1] ---/rwx SM=NUL STACK GUARD 00053000-00054000 [ 1] ---/rwx SM=NUL STACK GUARD 00068000-00069000 [ 1] ---/rwx SM=NUL STACK GUARD 0006a000-0006b000 [ 1] ---/rwx SM=NUL __TEXT 8fe00000-8fe31000 [ 49] r-x/rwx SM=COW /usr/lib/dyld __LINKEDIT 8fe68000-8fe76000 [ 14] r--/rwx SM=COW /usr/lib/dyld __TEXT 91a5c000-91bf6000 [ 410] r-x/r-x SM=COW ...tem.B.dylib __TEXT 93735000-93767000 [ 50] r-x/r-x SM=COW ...s.5.4.dylib __TEXT 93ff4000-94000000 [ 12] r-x/r-x SM=COW ...c_s.1.dylib __TEXT 9611c000-96122000 [ 6] r-x/r-x SM=COW ...mon.A.dylib __LINKEDIT 96e6e000-972da000 [ 1132] r--/r-- SM=COW ...mon.A.dylib STACK GUARD bc000000-bf800000 [ 14336] ---/rwx SM=NUL STACK GUARD fffec000-ffff0000 [ 4] ---/rwx SM=NUL shared memory ffff8000-ffffa000 [ 2] r-x/r-x SM=SHM ==== Writable regions for process 5755 __DATA 00046000-0004e000 [ 8] rw-/rwx SM=COW .../bin/screen MALLOC (freed?) 00052000-00053000 [ 1] rw-/rwx SM=PRV MALLOC_LARGE 00054000-00068000 [ 20] rw-/rwx SM=COW ...ne_0x100000 MALLOC (freed?) 00069000-0006a000 [ 1] rw-/rwx SM=COW MALLOC_TINY 00100000-00200000 [ 256] rw-/rwx SM=PRV ...ne_0x100000 MALLOC_TINY 00200000-00300000 [ 256] rw-/rwx SM=COW zone_0x0 MALLOC_SMALL 00800000-01000000 [ 2048] rw-/rwx SM=PRV ...ne_0x100000 __DATA 8fe31000-8fe68000 [ 55] rw-/rwx SM=COW /usr/lib/dyld __DATA a0336000-a0377000 [ 65] rw-/rwx SM=COW ...tem.B.dylib __DATA a0767000-a0770000 [ 9] rw-/rwx SM=COW ...s.5.4.dylib __DATA a0890000-a0891000 [ 1] rw-/rwx SM=COW ...c_s.1.dylib __DATA a0c02000-a0c03000 [ 1] rw-/rwx SM=COW ...mon.A.dylib Stack bf800000-c0000000 [ 2048] rw-/rwx SM=COW thread 0 ==== Legend SM=sharing mode: COW=copy_on_write PRV=private NUL=empty ALI=aliased SHM=shared ZER=zero_filled S/A=shared_alias ==== Summary for process 5755 ReadOnly portion of Libraries: Total=6980K resident=6700K(96%) swapped_out_or_unallocated=280K(4%) Writable regions: Total=18.3M written=224K(1%) resident=356K(2%) swapped_out=0K(0%) unallocated=18.0M(98%) REGION TYPE [ VIRTUAL] =========== [ =======] MALLOC [ 2582] STACK GUARD [ 14344] Stack [ 2048] __DATA [ 139] __LINKEDIT [ 1149] __PAGEZERO [ 1] __TEXT [ 596] shared memory [ 2] --Steve On Mon, Feb 18, 2008 at 01:43:00PM +0200, Vincent Coetzee wrote: > Dear List, > > I am hoping someone on these lists can assist me with my little > problem. If the problem is not appropriate to these lists, could > someone please point me in the right direction. I have a requirement > to know which memory pages (allocated by my application) have been > written to during the execution of my application, I also need to know > the addresses of the areas of the pages that have been changed. I have > spent hours perusing the BSD and Darwin documents without finding > anything that seems to allow for this. Does anyone know how to do this > or can suggest something please, I am at my wits end. > > Thanks in advance > > Vince > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/darwin-kernel/sbytnar%40kagi.com > > This email sent to sbytnar(a)kagi.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

1 0

Ascertaining dirty pages
by Vincent Coetzee 18 Feb '08

18 Feb '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Dear List, Thanks in advance Vince _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… I am hoping someone on these lists can assist me with my little problem. If the problem is not appropriate to these lists, could someone please point me in the right direction. I have a requirement to know which memory pages (allocated by my application) have been written to during the execution of my application, I also need to know the addresses of the areas of the pages that have been changed. I have spent hours perusing the BSD and Darwin documents without finding anything that seems to allow for this. Does anyone know how to do this or can suggest something please, I am at my wits end. This email sent to site_archiver(a)lists.apple.com

1 0

Re: IOKit hidden method warnings
by Eric Long 13 Feb '08

13 Feb '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:user-agent:date:subject:from:to:message-id:thread-topic:thread-index:in-reply-to:mime-version:content-type:content-transfer-encoding; bh=3o0qohNBgvxCIbNiVzsdv5v4FmXpSd/qxg086yqBNYM=; b=K5OEbw3lwF2CW9kqNgqL9qWnf+slE41fi45VYvfWBCHqAlr1/FALC/K87izdco7caV0FUL2sKcqAgb4myZ+rtZltIPmzznHEZtpXJrLSS8EjqbOJxBRZY70dzJEOrMys5YRoxCRr2E/ZkH1ZQ7HNx/0CpiU+DTW89N7Gtp+Pxko= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=user-agent:date:subject:from:to:message-id:thread-topic:thread-index:in-reply-to:mime-version:content-type:content-transfer-encoding; b=QftYW9YWSdjC+2gzYglIq24jvUfn0oboT41G+AONMAC4yl8kh4p/c4pCydO/9CIduHhSRaKmznlIlvNCdRRfPE5BLAuHLGEvkX4+FSyE3FOUUb4ysvhHu4AKme2G524SnvYIm/XKzq2pOJkqxiwMdd5yrwQP6zHlGagrFzvLjjs= Thread-index: AchufDe6dgLqVtpvEdyLWgAX8si2KA== Thread-topic: IOKit hidden method warnings User-agent: Microsoft-Entourage/11.3.6.070618 > 1- do you try to override a virtual function, sig error? > 2- did you write a function with the same name in your extend, sig error? > > or something else? > > but it's clearly a signature problem I am not overriding these methods myself, at all. In the sample I gave in my first message, for instance, you see this: /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He aders/libkern/c++/OSObject.h:144: warning: 'virtual void OSObject::taggedRelease(const void*) const' was hidden /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He aders/libkern/c++/OSBoolean.h:52: warning: by 'virtual void OSBoolean::taggedRelease(const void*, int) const' So its complaining that OSBoolean is stepping on OSObject. The other warnings are similar instances. Even DTS's SimpleUserClient sample comes up with all kinds of these warnings if you turn the warning on in the project. Eric _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

1 0

Re: IOKit hidden method warnings
by mm w 13 Feb '08

13 Feb '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; 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; bh=FzdXM+Ld1wdDQ2b1n+2wUUEVMhbELLHJ0/PlQcEqzSo=; b=fjMeDxSdsTZvfeZw16U33dDLr8eHV0oEdeQjn20WZviTsHvCGxY18qVp8Gjp6vRJz394PR9+dGlRogc86txBuIQPeobTF2A/Td7mnWoCgf+i9N4SXm9Q/ijr/q9wivS7+63zLEggzhfte6faJ6jEawf38YppqvvTOTxho1p4NRE= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=HnwFgI6qMX4NNYUWyASm2cIzOFDZijDmG/6CVYdvQUVfL/yCsE28qbNeONCTX4DYjYQ4OkZpxA0r/eNIUAnWW2wDQAC8UeGIRs42rDZzymOAyjtYowoc4/llgv7EPN8cEW6l7buyivVJOjDM4avqvX5H2L4cNPgJmZJLLuFje7I= Hi Eric, 1- do you try to override a virtual function, sig error? 2- did you write a function with the same name in your extend, sig error? or something else? but it's clearly a signature problem On Feb 13, 2008 11:48 AM, Eric Long <angrypigeon(a)gmail.com> wrote: > > overloaded-virtual? > > Well, my point is I don't get why the OS headers seem not to be proper. I'm > wondering if there is something intentional here. > > > > Eric > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/darwin-kernel/openspecies%40gmail.com > > This email sent to openspecies(a)gmail.com > -- -mmw _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

1 0

Re: IOKit hidden method warnings
by Eric Long 13 Feb '08

13 Feb '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:user-agent:date:subject:from:to:message-id:thread-topic:thread-index:in-reply-to:mime-version:content-type:content-transfer-encoding; bh=BMkqSKG1OQ4O0LDhPEg8tueUHxazXVxgIQvHc76czk8=; b=hxcqmjbPxiFqA3zaW/tPTYR/xngI75sMFInSFpPJFRUST+BFfpRv06RUZtzDlJ8s8W2d+LHE7xsAXF8DiVNHq8S+7dz8dZBfrV13BI4clv5L6fa6zPUB9sCBjyA3YNLkkQbWrEFycLRvgZzSnEVFSl1WoNO6FEkieC07xGL0QtI= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=user-agent:date:subject:from:to:message-id:thread-topic:thread-index:in-reply-to:mime-version:content-type:content-transfer-encoding; b=JfVw2mRm0jjKUAoWR1JuMkhKIwPugYFOMp8XdiFGmcJe21NvnUjqQs0lCrPAmfGI9w9Gw9P6FRByt00x2XwDoS/uwmtSL2qlX8WU0nN7WUHErWixrU8tSZNkp59kIdwRMWmpGjJHh4tkHzQ2k3edqnqY72WBTUnh/if/MvsLA8k= Thread-index: AchueXHVsBuaQtpsEdyLWgAX8si2KA== Thread-topic: IOKit hidden method warnings User-agent: Microsoft-Entourage/11.3.6.070618 > overloaded-virtual? Well, my point is I don't get why the OS headers seem not to be proper. I'm wondering if there is something intentional here. Eric _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

1 0

Re: IOKit hidden method warnings
by mm w 13 Feb '08

13 Feb '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; 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; bh=dRb1q2hO41fFgmCF9v8sT4+eCYnO/nw4KsNZbwRyTp8=; b=iFhT4uW1PtFElzP8sGinZp7xco5qLlCIZzD+XE2tq7Lm8rg7DcqApdMpTteXNJnPIb27NbkE1OCcQRGw8yLYDa9afrv5lAjQXtynlDaJgyZMWaj015HhYCapr6PAmudWo65xfwFLW6uRRDQinH1dDhPXuwmyOqtjVlNpaBVThjM= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=Sm2TGfkZwYC+4WJazHFSqwuG5wJ66tz26RR10onqwzVb5gsoC55+OdvOtbaUJvMzXa6LaAnpJCmz4GSCWpDPeznF/343r1kdInBDpT0xAflIBTAz59PTiFjHToqzQYlRpXwJhy0Ujdc/z0Q6tdb8hYYkQcvHjAFbQMsNs/Xlaq8= overloaded-virtual? On Feb 13, 2008 10:51 AM, Eric Long <ericsmac(a)smithmicro.com> wrote: > Hi, > > I'm trying to eliminate hidden method warnings from my kext, but I'm > confused because the problems seem to be in the OS headers themselves. > > Sample: > > /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He > aders/libkern/c++/OSObject.h:144: warning: 'virtual void > OSObject::taggedRelease(const void*) const' was hidden > /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He > aders/libkern/c++/OSBoolean.h:52: warning: by 'virtual void > OSBoolean::taggedRelease(const void*, int) const' > /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He > aders/libkern/c++/OSString.h:140: warning: 'virtual bool > OSString::isEqualTo(const OSString*) const' was hidden > /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He > aders/libkern/c++/OSSymbol.h:130: warning: by 'OSSymbol::isEqualTo' > /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He > aders/libkern/c++/OSString.h:161: warning: 'virtual bool > OSString::isEqualTo(const OSData*) const' was hidden > /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He > aders/libkern/c++/OSSymbol.h:130: warning: by 'OSSymbol::isEqualTo' > /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He > aders/libkern/c++/OSObject.h:87: warning: 'virtual bool OSObject::init()' > was hidden > /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He > aders/libkern/c++/OSNumber.h:89: warning: by 'OSNumber::init' > /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He > aders/libkern/c++/OSObject.h:87: warning: 'virtual bool OSObject::init()' > was hidden > /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He > aders/IOKit/IORegistryEntry.h:769: warning: by 'IORegistryEntry::init' > /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He > aders/IOKit/IORegistryEntry.h:769: warning: 'virtual bool > IORegistryEntry::init(IORegistryEntry*, const IORegistryPlane*)' was hidden > /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He > aders/IOKit/IOUserClient.h:226: warning: by 'IOUserClient::init' > > Any idea what's up here? > > > Thanks, > > Eric > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/darwin-kernel/openspecies%40gmail.com > > This email sent to openspecies(a)gmail.com > -- -mmw _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

1 0

IOKit hidden method warnings
by Eric Long 13 Feb '08

13 Feb '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Thread-index: AchucW9vreuxdNpkEdyLWgAX8si2KA== Thread-topic: IOKit hidden method warnings User-agent: Microsoft-Entourage/11.3.6.070618 Hi, I'm trying to eliminate hidden method warnings from my kext, but I'm confused because the problems seem to be in the OS headers themselves. Sample: /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He aders/libkern/c++/OSObject.h:144: warning: 'virtual void OSObject::taggedRelease(const void*) const' was hidden /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He aders/libkern/c++/OSBoolean.h:52: warning: by 'virtual void OSBoolean::taggedRelease(const void*, int) const' /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He aders/libkern/c++/OSString.h:140: warning: 'virtual bool OSString::isEqualTo(const OSString*) const' was hidden /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He aders/libkern/c++/OSSymbol.h:130: warning: by 'OSSymbol::isEqualTo' /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He aders/libkern/c++/OSString.h:161: warning: 'virtual bool OSString::isEqualTo(const OSData*) const' was hidden /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He aders/libkern/c++/OSSymbol.h:130: warning: by 'OSSymbol::isEqualTo' /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He aders/libkern/c++/OSObject.h:87: warning: 'virtual bool OSObject::init()' was hidden /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He aders/libkern/c++/OSNumber.h:89: warning: by 'OSNumber::init' /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He aders/libkern/c++/OSObject.h:87: warning: 'virtual bool OSObject::init()' was hidden /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He aders/IOKit/IORegistryEntry.h:769: warning: by 'IORegistryEntry::init' /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He aders/IOKit/IORegistryEntry.h:769: warning: 'virtual bool IORegistryEntry::init(IORegistryEntry*, const IORegistryPlane*)' was hidden /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/He aders/IOKit/IOUserClient.h:226: warning: by 'IOUserClient::init' Any idea what's up here? Thanks, Eric _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

1 0

Re: see if a mutex lock is taken?
by Greg 12 Feb '08

12 Feb '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Thanks mousse! That's the ticket! :-) - Greg On Feb 11, 2008, at 10:26 PM, mm w wrote: Hi Greg, as far I understand you want to use /System/Library/Frameworks/Kernel.framework/Headers/kern/locks.h nm /mach_kernel | grep lck_mtx_try_lock 0019aa30 T _lck_mtx_try_lock 004d1b03 D _lck_mtx_try_lock_lockstat_patch_point 0019a930 T _lck_mtx_try_lock_spin 004d1aff D _lck_mtx_try_lock_spin_lockstat_patch_point extern boolean_t lck_mtx_try_lock(lck_mtx_t *lck); further information: take a look here xnu/osfmk/i386/i386_lock.s or here xnu/osfmk/ppc/hw_lock.s and sure the IOKit interface http://developer.apple.com/documentation/Darwin/Reference/KernelIOKitFramew… call me mousse,\\ enjoy -mmw On Feb 11, 2008, at 3:42 PM, mm w wrote: try to understand, what you do (if you use a lck object (locked)) if your lock object has been created, a lock has been aquired when you create a lock object, the lock system test it for you Hi mmw, thanks for your reply. I was specifically wondering how I could do this from a kernel extension? I don't see a header in Kernel.framework that contains any try_lock functions for lck_mtx_t. Thanks! - Greg Hmm... I've found this in the sources to xnu, but I can't find this in the Kernel.framework. Perhaps I should have mentioned that I'm writing a kernel extension. Does this exist for kernel extensions, and if so how do I access it? Right now I'm just linking against Kernel.framework, which doesn't seem to have this header. Thanks! - Greg -- -mmw _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… there is a private method: extern boolean_t lck_mtx_try_lock(lck_mtx_t *lck); but as I tried to explain you this API does the job for you, it is lock system/api for a mutex_t if you absolutely want to use it just declare it as extern in your header On Feb 11, 2008 6:54 PM, Greg <greg(a)kinostudios.com> wrote: hi Greg, yep these mechanisms exist, this is the first things that you implement when you write a lock system no matter on what: islockable and islocked -mmw This email sent to site_archiver(a)lists.apple.com

1 0

Re: see if a mutex lock is taken?
by mm w 12 Feb '08

12 Feb '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; 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; bh=auYX2ml8q4quTylyG/ynNaIlVQhLyovJD3n5VUFV5rA=; b=IFBOCQuxG6EgDdtD0P0zyIEPdeVlucirktdWJHNyeRnLdZO6adtVlzkIq4U6QRFqQGveGAZOTm1GMRSu0LYcM0XWqa+N/iJ6g9FrodFjpirFKBOhF3BXahELblT+MooJ6xXr8ioLk6P0F0SHmZpE8SOGOcA4UEjPNPCVoDDjSE8= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=a/W7UmT9GV1cXSDRjYwxHS4ij+/3sVLs+ZKKkjPp829Ge10gogNiKatsX3Hzwq1KdY5725FS+ui+w3Kpk2kXM7n21Uuic/EZ/vSys9rM6aUkK51IQ9/lknpmkIeeBFUreQAU3YgEcICEZcHp93OZAdw2iDymFa5HHtKj/bfWYoY= Hi Greg, as far I understand you want to use /System/Library/Frameworks/Kernel.framework/Headers/kern/locks.h there is a private method: extern boolean_t lck_mtx_try_lock(lck_mtx_t *lck); but as I tried to explain you this API does the job for you, it is lock system/api for a mutex_t nm /mach_kernel | grep lck_mtx_try_lock 0019aa30 T _lck_mtx_try_lock 004d1b03 D _lck_mtx_try_lock_lockstat_patch_point 0019a930 T _lck_mtx_try_lock_spin 004d1aff D _lck_mtx_try_lock_spin_lockstat_patch_point if you absolutely want to use it just declare it as extern in your header extern boolean_t lck_mtx_try_lock(lck_mtx_t *lck); further information: take a look here xnu/osfmk/i386/i386_lock.s or here xnu/osfmk/ppc/hw_lock.s and sure the IOKit interface http://developer.apple.com/documentation/Darwin/Reference/KernelIOKitFramew… call me mousse,\\ enjoy -mmw On Feb 11, 2008 6:54 PM, Greg <greg(a)kinostudios.com> wrote: > > On Feb 11, 2008, at 3:42 PM, mm w wrote: > > > hi Greg, yep these mechanisms exist, this is the first things that you > > implement when you write a lock system no matter on what: islockable > > and islocked > > > > try to understand, what you do (if you use a lck object (locked)) > > if your lock object has been created, a lock has been aquired > > when you create a lock object, the lock system test it for you > > > > -mmw > > > Hi mmw, thanks for your reply. I was specifically wondering how I > could do this from a kernel extension? I don't see a header in > Kernel.framework that contains any try_lock functions for lck_mtx_t. > > Thanks! > > - Greg > > > > >> > >> Hmm... I've found this in the sources to xnu, but I can't find this > >> in > >> the Kernel.framework. Perhaps I should have mentioned that I'm > >> writing a kernel extension. Does this exist for kernel extensions, > >> and if so how do I access it? Right now I'm just linking against > >> Kernel.framework, which doesn't seem to have this header. > >> > >> Thanks! > >> > >> - Greg > >> > > -- -mmw _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

1 0