Join me in Pearltrees
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Re: [NSBitmapImageRep getBitmapDataPlanes] copying data?
On 21 Feb 2011, at 23:49, Ken Thomases wrote: What makes you think the data copy is extra? If you read that AppKit release note, you'll see that NSImage may not be decoding the file contents right off the bat. For example, it mentions that [i]f you initialize a NSImage from a JPEG file, then draw it in a PDF, you should get a PDF of the same file size as the original JPEG. In other words, NSImage is keeping the image data in its original JPEG-compressed format, not as a rasterized bitmap. That's a very good point. In this case, though, I think there probably is some excess stuff going on. Looking at what's going on with Shark, approx 1/5th of this thread's time is spent in 'read' (backed by disk cache), 1/4 in copyImageBlockSetTIFF, which seems to be done lazily but I presume is the decoding phase you allude to [although in this case it's pretty much just a memcpy], and 1/5 in imageProvider_getBytes, which copies the data *again*. On 22 Feb 2011, at 00:05, Quincey Morris wrote: You know you're stuck with disk reads at some point in the process, which are going to be as slow as they're going to be. I'm going to go out on a limb and say that if your application can't swallow the additional cost of uncompressing and/or copying inside 'getBitmapDataPlanes' *once* per image**, your application design is broken*** -- or your Mac hardware is too slow for that application. :) Very true, though as I mentioned the disk cache often works in my favour here. To be honest the specific issue of getBitmapDataPlanes is not really on the most critical realtime path in my code. As much as anything, it was a case of having spotted this issue I wanted to understand it thoroughly because there is GUI drawing (using NSImages/bitmaps etc) that is taking place in parallel with the main performance-critical stuff. Also, as Ken Ferry's reply revealed, there are evidently some impedance matching issues I should really understand better, so this is all extremely helpful. On 22 Feb 2011, at 02:02, Ken Ferry wrote: However! ImageIO, the underlying home framework of all image file format reading and writing on Mac OS X, makes no promises about the relationship of the file to the in-memory pixel format. Certainly you know that many file formats are compressed, whereas the buffer you returned from the bitmapData method of NSBitmapImageRep is not. Further, there are many on-disk formats that are not supported by Quartz. Besides that, you might figure that the OS will never reduce the number of pixel formats, so if you're currently getting something tightly related to what you see in the file, you will expect to get that in the future. That's not the case though… CoreGraphics has talked about standardizing everything with less data than ARGB 32 host endian to ARGB 32 host endian right when its read in, to simplify and speedup later steps of the graphics pipeline. There are formats for which that happens today (I think maybe RGB JPEG data is coming in as as ARGB as of 10.6, perhaps?). That change was made as part of work in 10.6 to support decoding only rectangular blocks of an image throughout the graphics pipeline. Asking for the bitmapData also defeats that pipeline and forces everything into memory. Plus, it's pretty hard to write code that deals expressly with pixel data without putting things in a standard colorspace. RGBA (.3, .5, .6, 1.0) is a different color in sRGB vs generic RGB. For most pixel-processing algorithms, you'll get different visual results if you naively apply the same mathematics in different colorspaces. Anyway, point is, in all likelihood, you do need to draw your image to a bitmap in known format in order to work with the pixels. You probably only need to do this once though… if you're seeing repeated copying in bitmapData, that suggests that you're alternately drawing and asking for pixel data from the image. If you're never modifying the data, you could instead store the data on the side in addition to the rep. Storing can be done via subclass, wrapper object, global dictionary mapping rep object to data, objc associative storage, etc. Or, look at just drawing the image into a bitmap when you need to see the data. That's less work for you to implement, and may find that it performs well, depending on what was really costing you before. You could consider reusing one bitmap to draw in from multiple images to avoid malloc'ing and free'ing memory. Thanks very much - lots of food for thought there. I think some of the issues you mention ~should~ be less severe because I am working with greyscale data, but maybe it's not guaranteed. The pattern I was following was at least previously a recommended approach I presume (see for example CocoaCreateMovie/CopyNSImageToGWorld). It sounds from what you're saying as if drawing the image into a bitmap may actually now be potentially more
unloading an launch agent with in the same process
Hi All , I have a ui based application which is launched by launch agent .The user is provided with an option to exit/ quit from the same applicaion . what is the best way to unload the application ? P.Rajendran or Raju (for further details contact me ) ___ 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
Re: unloading an launch agent with in the same process
Make sure it is launched only once. This can be set as a value in the launch agent plist. -Arun On Tue, Feb 22, 2011 at 4:36 PM, Rajendran P rasu_1...@yahoo.com wrote: Hi All , I have a ui based application which is launched by launch agent .The user is provided with an option to exit/ quit from the same applicaion . what is the best way to unload the application ? P.Rajendran or Raju (for further details contact me ) ___ 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/arun.ka%40gmail.com This email sent to arun...@gmail.com ___ 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
Re: unloading an launch agent with in the same process
On 2011 Feb 22, at 03:14, Arun wrote: Make sure it is launched only once. This can be set as a value in the launch agent plist. If you can't use Arun's idea, then you'll need to unload it by invoking launchctl as an NSTask, because I've never been able to find an API to do this. P.S. For low-level questions on launchd, ask launchd-...@lists.macosforge.org. ___ 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
Accessing a managedObject property from within an accessor of another property
I've been trying for days to determine why I get EXC_BAD_ACCESS when I try to
access a managedObject property from within an accessor of another property?
this code in main.m
[[self note] setValue:@HELLO WORLD forKey:@category];
NSNumber *tmpVal = [NSNumber numberWithBool:![[[self note]
valueForKey:@isEncrypted] boolValue]]; // if I type po [self note] I see the
note description
[[self note] setValue:tmpVal forKey:@isEncrypted]; // if I type po [self
note] after this I get EXEC_BAD_ACCESS
The if statement in the accessor is causing the problem:
- (NSString *)category {
NSString * tmpValue;
[self willAccessValueForKey:@category];
tmpValue = [self primitiveCategory];
[self didAccessValueForKey:@category];
if ([[self valueForKey:@isEncrypted] boolValue]) { // THIS IS CAUSING
THE PROBLEM
// code to decrypt tmpValue
}
return tmpValue;
}
When I replace: if ([[self valueForKey:@isEncrypted] boolValue]) with if (1
== 2 ) or if (1 == 1 ) it works
FYI: in my .h file @property (nonatomic, retain) NSNumber * isEncrypted; and
@dynamic isEncrypted; in .m___
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Fwd: Accessing a managedObject property from within an accessor of another property
FYI - my managedObject is defined as such:
@interface Note : NSManagedObject
{
}
@property (nonatomic, retain) NSNumber * uid;
@property (nonatomic, retain) NSString * category;
@property (nonatomic, retain) NSNumber * isEncrypted;
@interface Note (CoreDataGeneratedPrimitiveAccessors)
- (NSString *)primitiveCategory;
- (void)setPrimitiveCategory:(NSString *)value;
@end
@implementation Note
@dynamic uid;
@dynamic category;
@dynamic isEncrypted;
- (NSString *)category
{
NSString * tmpValue;
[self willAccessValueForKey:@category];
tmpValue = [self primitiveCategory];
[self didAccessValueForKey:@category];
if ([[self valueForKey:@isEncrypted] boolValue]) {
//code to decrypt tmpValue
}
return tmpValue;
}
- (void)setCategory:(NSString *)value
{
if ([[self valueForKey:@isEncrypted] boolValue]) {
// code to encrypt tmpValue
}
[self willChangeValueForKey:@category];
[self setPrimitiveCategory:value];
[self didChangeValueForKey:@category];
}
- (BOOL)validateCategory:(id *)valueRef error:(NSError **)outError
{
// Insert custom validation logic here.
return YES;
}
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Re: Accessing a managedObject property from within an accessor of another property
On 22.02.2011, at 16:13, Brad Stone wrote:
FYI - my managedObject is defined as such:
@interface Note : NSManagedObject
{
}
That's probably not your problem, but just to eliminate it as a cause: You
should prefix your class names. Apple has been known to create internal private
classes with un-prefixed names (like Account). And once one class with a
particular name has been loaded, requests to load any other class of the same
name will be ignored. Anyone trying to create an instance of such a class will
get the first class that was loaded, which is probably something completely
different.
So I recommend choosing your own three-character prefix (BST?), just in case
there's some private Apple class named Note.
Cheers,
-- Uli Kusterer
The Witnesses of TeachText are everywhere...
http://www.zathras.de
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Re: Accessing a managedObject property from within an accessor of another property
Yes, all my other classes are prefixed with SR since this one. I haven't
gotten back to fixing this.
On Feb 22, 2011, at 10:22 AM, Uli Kusterer wrote:
On 22.02.2011, at 16:13, Brad Stone wrote:
FYI - my managedObject is defined as such:
@interface Note : NSManagedObject
{
}
That's probably not your problem, but just to eliminate it as a cause: You
should prefix your class names. Apple has been known to create internal
private classes with un-prefixed names (like Account). And once one class
with a particular name has been loaded, requests to load any other class of
the same name will be ignored. Anyone trying to create an instance of such a
class will get the first class that was loaded, which is probably something
completely different.
So I recommend choosing your own three-character prefix (BST?), just in case
there's some private Apple class named Note.
Cheers,
-- Uli Kusterer
The Witnesses of TeachText are everywhere...
http://www.zathras.de
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Problem opening file
Hi there, I have a configuration file which is used by an internal library in my app's data model engine. The engine was written in c++ and needs this file for loading the app's documents correctly. Theis file never changes and shouldn't have to be seen or open by the user. Its contents are the same for any document files oppened by the user. During debugging I place the file next to the executable in Build- Debug and the library opens it with using c++ streams with just the file name. However, when I compilethe app as release, and place the configuration file next to the executable, it fails to find the file. I imagine I have to deal with application bundle api, but the thing is I can't add any cocoa code to this library, as it needs remain cross- platform. Also I can't follow the problem when I use the release version since the debugging symbols are not there. NSLog helped me track the problem, but iI can't figure out how to fix it. My questions are: - Other than debugging symbols, are there anyother differences between a debug and release build? - Why can I open the file when running the app from Xcode and not otherwise? - How can I make my app see the file? Any comments would be much appreciated. Carlos. ___ 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
Re: Problem opening file
On Tue, Feb 22, 2011 at 10:47 AM, Carlos Eduardo Mello carloseme...@gmail.com wrote: I have a configuration file which is used by an internal library in my app's data model engine. The engine was written in c++ and needs this file for loading the app's documents correctly. Theis file never changes and shouldn't have to be seen or open by the user. Its contents are the same for any document files oppened by the user. During debugging I place the file next to the executable in Build-Debug and the library opens it with using c++ streams with just the file name. However, when I compilethe app as release, and place the configuration file next to the executable, it fails to find the file. It's not a Debug/Release difference. The difference is how you're launching your app - the current working directory is different when you launch the app from Finder, from Xcode, and using the open command-line tool. I imagine I have to deal with application bundle api, but the thing is I can't add any cocoa code to this library, as it needs remain cross-platform. Does this library allow you to specify the full path to its config file, instead of just its name, when you initialize the library? If so, you could keep the platform-specific code outside of the library itself. Alternatively, you could use NSBundle methods to find the location of your executable, then chdir() to that directory before initializing the library. sherm-- -- Cocoa programming in Perl: http://camelbones.sourceforge.net ___ 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
Re: Problem opening file
On Feb 22, 2011, at 9:14 AM, Sherm Pendley wrote: I imagine I have to deal with application bundle api, but the thing is I can't add any cocoa code to this library, as it needs remain cross-platform. Does this library allow you to specify the full path to its config file, instead of just its name, when you initialize the library? If so, you could keep the platform-specific code outside of the library itself. Alternatively, you could use NSBundle methods to find the location of your executable, then chdir() to that directory before initializing the library. Also, although I don't know that it really matters other than style consistency, but next to the executable is not where such a file would normally be put in an app bundle. The Resources folder in the bundle is more appropriate--assuming here that you're building a regular bundled app and not just a command-line executable... -- Scott Ribe scott_r...@elevated-dev.com http://www.elevated-dev.com/ (303) 722-0567 voice ___ 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
Re: How to detect when an NSTextView has finished being loaded into a window?
Many thanks for the reply. Yes, you're right - the text view could get deallocated in -viewDidMoveToWindow which is indeed a recipe for disaster and was causing the issues. (I should have realised that in the first place, but by the time the page layout set-up got moved to a method responding to a notification sent from -viewDidMoveToWindow, I was at the end of my tether trying to put it in the right place to avoid the artefact bug, and as the program got away with not crashing for most users, I never noticed the potential problem with this move.) The way the page view gets swapped for the text view and then the original text view gets removed entirely is actually based on code straight from TextEdit, so I think it's more the placement of the code than the way it's done. I seem to have fixed the issue, although my solution is a bit of an ugly mash-up. In my controller I now retain the original text view in the method responding to the notification it receives from -viewDidMoveToWindow and then release it again after a delay of 0, i.e. at the end of the run loop. That way I ensure it's kept around long enough so that it doesn't get deallocated while it's still calling methods on itself (e.g. from _setWindow:). I'm also now sending the notification from the end of _setWindow: if that method is available and it's not the App Store version, otherwise after a delay of 0 from -viewDidMoveToWindow. The latter still has the issue of the slight delay where the user can see the original text view appear on screen for an instant before it gets swapped out for the page view, but that's better than a crash. Taken together, these ensure that the page view only gets loaded when there is a window for it to get loaded into, and that the old text view is only deallocated after it's been finished with. Part of the issue is the complex arrangement of views in my app. TextEdit can call -setHasMultiplePages: in -windowDidLoad, because the page view will move directly to the window; in my app the page view may be hidden away in a tab view at this point as there may be a different sort of view selected for viewing on project open - showing an image, or a PDF file, for instance - meaning that if I call -setHasMultiplePages: in -windowDidLoad, the page view may not have a window and so the artefacts bug will rear its head. The next obvious place for switching to multiple pages view was -tabView:didSelectTabViewItem:, so that it only got called when the text was displayed in the tab view. However, that's no good either because my app has hide-able split panes, so there's no guarantee that the tab view is on screen and part of a window when everything gets set up... This is why I ended up only switching to the multiple page view when the program knows that the basic text view has made it to the window - that's the only time I'm guaranteed a window for the page view. Hmm, although I'm now wondering if maybe I should just set the scroll view's documentView to nil when it's off-window and do all this when the scroll view moves to the window... Thanks again and all the best, Keith --- On Tue, 2/22/11, Kyle Sluder kyle.slu...@gmail.com wrote: From: Kyle Sluder kyle.slu...@gmail.com Subject: Re: How to detect when an NSTextView has finished being loaded into a window? To: Keith Blount keithblo...@yahoo.com Cc: Matt Neuburg m...@tidbits.com, cocoa-dev@lists.apple.com Date: Tuesday, February 22, 2011, 3:19 AM On Mon, Feb 21, 2011 at 1:04 PM, Keith Blount keithblo...@yahoo.com wrote: Hi Matt, Many thanks for the reply. Unfortunately that doesn't really work, as if it is hidden in any way then it is off screen and therefore the artefacts bug rears its ugly head. (The whole thing is in a tab view, and even if the text view is in a different tab to the visible one while it is set up, the artefacts bug appears.) Are you running on Snow Leopard? Also, from your original description, it sounds like you intend for the text view to possibly be deallocated during -viewDidMoveToWindow. This sounds like a recipe for disaster. Instead, you should try hooking up additional text views/containers to the same layout manager. Your first text view will therefore always exist; in single-view mode it will be the only text view, whereas in page layout mode it will be the first in the chain of text views sharing the layout manager and text storage. --Kyle Sluder ___ 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
Re: Accessing a managedObject property from within an accessor of another property
On Feb 22, 2011, at 06:19, Brad Stone wrote:
I've been trying for days to determine why I get EXC_BAD_ACCESS when I try to
access a managedObject property from within an accessor of another property?
this code in main.m
[[self note] setValue:@HELLO WORLD forKey:@category];
NSNumber *tmpVal = [NSNumber numberWithBool:![[[self note]
valueForKey:@isEncrypted] boolValue]]; // if I type po [self note] I see
the note description
[[self note] setValue:tmpVal forKey:@isEncrypted]; // if I type po [self
note] after this I get EXEC_BAD_ACCESS
The if statement in the accessor is causing the problem:
- (NSString *)category {
NSString * tmpValue;
[self willAccessValueForKey:@category];
tmpValue = [self primitiveCategory];
[self didAccessValueForKey:@category];
if ([[self valueForKey:@isEncrypted] boolValue]) { // THIS IS CAUSING
THE PROBLEM
// code to decrypt tmpValue
}
return tmpValue;
}
No answer, but a couple of points:
-- What happens if you write 'note.isEncrypted' (or '[note isEncrypted]')
instead of '[note valueForKey: @isEncrypted]'?
-- What happens if you code your own custom accessors for isEncrypted, like
you've done for category?
-- EXC_BAD_ACCESS is often a symptom of a memory management problem. Is there a
problem with the object being returned by '[self note]'? You didn't show code
for where this is implemented. It's possible that you failed to retain the
object, or, if you're using garbage collection, returned an object with no
strong references, or perhaps you returned a zombie object.
What happens in the above code if you set first a local variable to '[[self
note] retain]' and use the local variable in place of the other references to
'[self note]'?
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Reliable way to determine bitness of the kernel
hello i have a kext (or, rather, 2 kexts - one built with -arch i386, another one with -arch x86_64). They should work on both OS X 10.5 and 10.6. i have an installing script, which looks like if [ `uname -a | grep x86_64 | wc -l` ge 1 ]; then cp -R 64bit.kext /Library/Extensions/ else cp -R 32bit.kext /Library/Extensions/ this goes into production code. But unfortunately, it seems like it does not work well on all systems. What caveats may this method of determining the bitness of the system have? It works fine on my Leopard and Snow Leopard (even though my Snow Leo runs in 32 bit mode), but other people complain that the driver is not being installed. Maybe some instances of the system are missing any of the command line utilities i used? Could you suggest a better way of determining the bitness of the kernel? Thanks for any advice! ___ 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
Re: Accessing a managedObject property from within an accessor of another property
Quincey,
Thanks for relying. It's good to have another developer to talk this thru with.
1) customer accessors for isEncrypted didn't work (I have a set exactly like
category)
2) I'm using garbage collection
3) I tried [note isEncrypted] same error
4) i tried using a local ivar i..e Note *thisNote = [self note], no change
I've been trying these variations for days.
On Feb 22, 2011, at 12:44 PM, Quincey Morris wrote:
On Feb 22, 2011, at 06:19, Brad Stone wrote:
I've been trying for days to determine why I get EXC_BAD_ACCESS when I try
to access a managedObject property from within an accessor of another
property?
this code in main.m
[[self note] setValue:@HELLO WORLD forKey:@category];
NSNumber *tmpVal = [NSNumber numberWithBool:![[[self note]
valueForKey:@isEncrypted] boolValue]]; // if I type po [self note] I see
the note description
[[self note] setValue:tmpVal forKey:@isEncrypted]; // if I type po [self
note] after this I get EXEC_BAD_ACCESS
The if statement in the accessor is causing the problem:
- (NSString *)category {
NSString * tmpValue;
[self willAccessValueForKey:@category];
tmpValue = [self primitiveCategory];
[self didAccessValueForKey:@category];
if ([[self valueForKey:@isEncrypted] boolValue]) { // THIS IS CAUSING
THE PROBLEM
// code to decrypt tmpValue
}
return tmpValue;
}
No answer, but a couple of points:
-- What happens if you write 'note.isEncrypted' (or '[note isEncrypted]')
instead of '[note valueForKey: @isEncrypted]'?
-- What happens if you code your own custom accessors for isEncrypted, like
you've done for category?
-- EXC_BAD_ACCESS is often a symptom of a memory management problem. Is there
a problem with the object being returned by '[self note]'? You didn't show
code for where this is implemented. It's possible that you failed to retain
the object, or, if you're using garbage collection, returned an object with
no strong references, or perhaps you returned a zombie object.
What happens in the above code if you set first a local variable to '[[self
note] retain]' and use the local variable in place of the other references to
'[self note]'?
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Re: Reliable way to determine bitness of the kernel
On 22 Feb 2011, at 10:09 AM, eveningnick eveningnick wrote: i have a kext (or, rather, 2 kexts - one built with -arch i386, another one with -arch x86_64). They should work on both OS X 10.5 and 10.6. i have an installing script, which looks like if [ `uname -a | grep x86_64 | wc -l` ge 1 ]; then cp -R 64bit.kext /Library/Extensions/ else cp -R 32bit.kext /Library/Extensions/ I've never tried developing a kext, but is there a reason you can't lipo the two versions together to create a fat executable? Then the kernel will just automatically load the correct one. ___ 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
Re: Reliable way to determine bitness of the kernel
We support fat binaries. Please use them to avoid this problem entirely. You
just need to reconfigure your kext project to build both architectures at the
same. A simple example from the command line:
/tmp $ cat test.c
#include stdio.h
int
main(void)
{
printf(sizeof(void *) == %zu\n, sizeof(void *));
return 0;
}
/tmp $ gcc -arch i386 -arch x86_64 -Wall -Wextra -Werror -Os -o test test.c
/tmp $ file test
test: Mach-O universal binary with 2 architectures
test (for architecture i386): Mach-O executable i386
test (for architecture x86_64): Mach-O 64-bit executable x86_64
/tmp $ ./test
sizeof(void *) == 8
/tmp $ arch -i386 ./test
sizeof(void *) == 4
/tmp $
You can use the file command against to verify that any binary is fat, just
like the above.
davez
On Feb 22, 2011, at 10:09 AM, eveningnick eveningnick wrote:
hello
i have a kext (or, rather, 2 kexts - one built with -arch i386, another one
with -arch x86_64). They should work on both OS X 10.5 and 10.6.
i have an installing script, which looks like
if [ `uname -a | grep x86_64 | wc -l` ge 1 ]; then
cp -R 64bit.kext /Library/Extensions/
else
cp -R 32bit.kext /Library/Extensions/
this goes into production code.
But unfortunately, it seems like it does not work well on all systems.
What caveats may this method of determining the bitness of the system have?
It works fine on my Leopard and Snow Leopard (even though my Snow Leo runs
in 32 bit mode), but other people complain that the driver is not being
installed.
Maybe some instances of the system are missing any of the command line
utilities i used?
Could you suggest a better way of determining the bitness of the kernel?
Thanks for any advice!
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Re: Accessing a managedObject property from within an accessor of another property
On Feb 22, 2011, at 10:10, Brad Stone wrote: 2) I'm using garbage collection Then my money's on a memory management error with the [self note] object. Can you show the code for [self note] and/or show the strong reference that keeps it alive? ___ 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
iOS: Calling up numeric keypad
I have a UITextField that should accept only numerics. Is there a way to set the textfield so that when the user touches it, the numeric keypad comes up instead of the alpha keypad? iOS 4.2.1 ___ 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
Re: Accessing a managedObject property from within an accessor of another property
On Feb 22, 2011, at 10:10, Brad Stone wrote: 2) I'm using garbage collection Also, it's worth checking that you really have garbage collection turned on. It's easy mistake to turn it on in the project build settings and not realize that the target settings turn it off. The symptoms you've been describing are exactly consistent with this. ___ 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
Re: Reliable way to determine bitness of the kernel
thanks for detailed description of the solution ___ 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
Re: Accessing a managedObject property from within an accessor of another property
On Feb 22, 2011, at 3:19 PM, Brad Stone wrote:
I've been trying for days to determine why I get EXC_BAD_ACCESS when I try to
access a managedObject property from within an accessor of another property?
Could you post the stack trace? Just for debugging purposed: What happens if
you define another method (not an CoreData-Property)
like:
- (NSString*) categoryPlain
{
NSString* categoryEncryptedOrNot = self.category;
if ([self.isEncrypted boolValue]) {
// decrypt
return decryptedCategory;
}
return categoryEncryptedOrNot;
}
and leave category as a @dynamic-property. Maybe CoreDate gets confused if
you retrieve the value, but change
it after your didAccessValueForKey:-message send
Cheers,
Felix
this code in main.m
[[self note] setValue:@HELLO WORLD forKey:@category];
NSNumber *tmpVal = [NSNumber numberWithBool:![[[self note]
valueForKey:@isEncrypted] boolValue]]; // if I type po [self note] I see
the note description
[[self note] setValue:tmpVal forKey:@isEncrypted]; // if I type po [self
note] after this I get EXEC_BAD_ACCESS
The if statement in the accessor is causing the problem:
- (NSString *)category {
NSString * tmpValue;
[self willAccessValueForKey:@category];
tmpValue = [self primitiveCategory];
[self didAccessValueForKey:@category];
if ([[self valueForKey:@isEncrypted] boolValue]) { // THIS IS CAUSING
THE PROBLEM
// code to decrypt tmpValue
}
return tmpValue;
}
When I replace: if ([[self valueForKey:@isEncrypted] boolValue]) with if (1
== 2 ) or if (1 == 1 ) it works
FYI: in my .h file @property (nonatomic, retain) NSNumber * isEncrypted; and
@dynamic isEncrypted; in .m___
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--
Mit freundlichen Grüßen,
Felix Franz
Lead Software Engineer
ERGOSIGN GmbH
Europa-Allee 12
66113 Saarbrücken
Phone: +49 681 98 84 12 14
Fax: +49 681 98 84 12 10
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HRB 11850
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Prof. Dr. Dieter Wallach
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Re: iOS: Calling up numeric keypad
I'm surprised nobody replied to this yet. Open the interface file in Interface Builder. Set the keyboard for that UITextField to use the numeric keyboard. Then, each time the user touches the textfield, the numeric keyboard will show up. -Laurent. -- Laurent Daudelin AIM/iChat/Skype:LaurentDaudelin http://www.nemesys-soft.com/ Logiciels Nemesys Software laur...@nemesys-soft.com On Feb 22, 2011, at 10:42, Jon Sigman wrote: I have a UITextField that should accept only numerics. Is there a way to set the textfield so that when the user touches it, the numeric keypad comes up instead of the alpha keypad? iOS 4.2.1 ___ 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
Re: Problem opening file
On Feb 22, 2011, at 1:46 PM, Scott Ribe wrote: On Feb 22, 2011, at 9:14 AM, Sherm Pendley wrote: I imagine I have to deal with application bundle api, but the thing is I can't add any cocoa code to this library, as it needs remain cross-platform. Does this library allow you to specify the full path to its config file, instead of just its name, when you initialize the library? If so, you could keep the platform-specific code outside of the library itself. Alternatively, you could use NSBundle methods to find the location of your executable, then chdir() to that directory before initializing the library. Also, although I don't know that it really matters other than style consistency, but next to the executable is not where such a file would normally be put in an app bundle. The Resources folder in the bundle is more appropriate--assuming here that you're building a regular bundled app and not just a command-line executable... Thank you both. I put my file in Contents/Resources/ and passed the path to my internal library. Two lines did the trick: NSString * nsPath = [ [NSBundle mainBundle] pathForResource:@comp ofType:@slf]; string cppPath = [nsPath UTF8String]; ___ 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
Re: iOS: Calling up numeric keypad
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 2/22/11 12:56 PM, Laurent Daudelin wrote: I'm surprised nobody replied to this yet. Open the interface file in Interface Builder. Set the keyboard for that UITextField to use the numeric keyboard. Then, each time the user touches the textfield, the numeric keyboard will show up. Beat me to it... I was waiting to get back to IB to verify what the setting was called. :-) Also, in the event that you need to do this in code, you can set the keyboardType property appropriately. This property (and others) are defined in the UITextInputTraits protocol, found in the header of the same name. - -- Conrad Shultz Synthetiq Solutions www.synthetiqsolutions.com -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.7 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iD8DBQFNZCVfaOlrz5+0JdURAoXBAJ9Fhl7fGpT8pIg14k8+SzZoVH5d5wCdEXrs zhTG6HsjNloUSq9ybExKlPg= =mSiR -END PGP SIGNATURE- ___ 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
Re: Accessing a managedObject property from within an accessor of another property
On Feb 22, 2011, at 12:21, Brad Stone wrote: I'm assuming since I can successfully change the string in category my reference to [self note] is OK. This is an absolutely false assumption. If, as I'm hypothesizing, [self note] is returning a zombie object (or it becomes a zombie object after the value is returned), there will be a timing window before undeath == death. During that window, the object may appear to function perfectly normally. If you don't want this to take more days of debugging, you need to stop flailing, and *prove* that [self note] is alive. That could be difficult since the debugger seems to have proof that it's not. If you can prove [self note] is alive, then you need to look elsewhere -- the failing property reference may only be the place where the error becomes apparent, and may not itself have any role in the error. So, again, how are you getting the value for [self note]? And what is its address? (Its 'p (void*)' value, not its 'po' value, if you want to think in GDB terms.) 0x7fff5f3ffd80 doesn't look like a typical 64-bit pointer address. (I have a vague recollection of a past thread about GC XORing something into dead pointer values, producing numbers like this, but I may be remembering something irrelevant.) Note also that 0x7fff843748d7 in _CFArrayReplaceValues () in the debugger output tends to suggest that [self note] is mucking about changing arrays. And I agree with the earlier poster who suggested you get it to fail in code and then post a real backtrace. ___ 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
Trouble retrieving selection from NSArrayController
I have an app that has a NSTableView populated with and array of Tapes from
CoreData. Tapes is declared as:
@interface Tapes : NSManagedObject
{
NSString * TapeName;
NSDate * TapeDate;
NSString * Notes;
NSSet* VideoClip;
}
The TableView is bound to an NSArrayController (tapesController). If I select a
row in the table and execute
NSArray * tapeSelection = [tapesController selectedObjects];
Tapes * theTape = [tapeSelection objectAtIndex:0];
the local variable
theTape = (Tapes*) 0x
How do I get a valid selection
Joseph Ayers, Professor
Department of Biology and
Marine Science Center
Northeastern University
East Point, Nahant, MA 01908
Phone (781) 581-7370 x309(office), x335(lab)
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Re: Trouble retrieving selection from NSArrayController
On 22 Feb 2011, at 21:30, Ayers, Joseph wrote:
I have an app that has a NSTableView populated with and array of Tapes from
CoreData. Tapes is declared as:
@interface Tapes : NSManagedObject
{
NSString * TapeName;
NSDate * TapeDate;
NSString * Notes;
NSSet* VideoClip;
}
The TableView is bound to an NSArrayController (tapesController). If I select
a row in the table and execute
NSArray * tapeSelection = [tapesController selectedObjects];
Tapes * theTape = [tapeSelection objectAtIndex:0];
the local variable
theTape = (Tapes*) 0x
How do I get a valid selection
Logically, this must be because tapesController or tapeSelection is nil. I
suspect the former.
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Re: Trouble retrieving selection from NSArrayController
On Feb 22, 2011, at 13:30, Ayers, Joseph wrote:
@interface Tapes : NSManagedObject
{
NSString * TapeName;
NSDate * TapeDate;
NSString * Notes;
NSSet* VideoClip;
}
Incidentally, what are those instance variables doing in the managed object
subclass? They seem *extremely* unlikely.
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Re: Trouble retrieving selection from NSArrayController
Here's the interface
I understood from Scott Stevensons book that in 32bit mode you had to declare
the instance variables.
//
// Tapes.h
// Roboplasm
//
// Created by Joseph Ayers on 10/11/10.
// Copyright 2010 Northeastern University. All rights reserved.
//
#import CoreData/CoreData.h
#import VideoClip.h
//@class VideoClip;
@interface Tapes : NSManagedObject
{
NSString * TapeName;
NSDate * TapeDate;
NSString * Notes;
NSSet* VideoClip;
}
//attributes
@property (nonatomic, retain) NSString * TapeName;
@property (nonatomic, retain) NSDate * TapeDate;
@property (nonatomic, retain) NSString * Notes;
//relationships
@property (nonatomic, retain) NSSet* VideoClip;
@end
@interface Tapes (CoreDataGeneratedAccessors)
- (void)addTapesObject:(Tapes *)value;
- (void)removeTapesObject:(Tapes *)value;
- (void)addTapes:(NSSet *)value;
- (void)removeTapes:(NSSet *)value;
- (void)addVideoClipObject:(VideoClip *)value;
- (void)removeVideoClipObject:(VideoClip *)value;
- (void)addVideoClip:(NSSet *)value;
- (void)removeVideoClip:(NSSet *)value;
@end
On Feb 22, 2011, at 5:34 PM, Quincey Morris wrote:
On Feb 22, 2011, at 13:30, Ayers, Joseph wrote:
@interface Tapes : NSManagedObject
{
NSString * TapeName;
NSDate * TapeDate;
NSString * Notes;
NSSet* VideoClip;
}
Incidentally, what are those instance variables doing in the managed object
subclass? They seem *extremely* unlikely.
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Re: iOS: Calling up numeric keypad
That's awesome. I never knew you could do that. Works great! Thanks Conrad and Laurent! From: Conrad Shultz con...@synthetiqsolutions.com To: Laurent Daudelin laur...@nemesys-soft.com Cc: Jon Sigman rf_...@yahoo.com; cocoa-dev@lists.apple.com Sent: Tue, February 22, 2011 1:06:40 PM Subject: Re: iOS: Calling up numeric keypad -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 2/22/11 12:56 PM, Laurent Daudelin wrote: I'm surprised nobody replied to this yet. Open the interface file in Interface Builder. Set the keyboard for that UITextField to use the numeric keyboard. Then, each time the user touches the textfield, the numeric keyboard will show up. Beat me to it... I was waiting to get back to IB to verify what the setting was called. :-) Also, in the event that you need to do this in code, you can set the keyboardType property appropriately. This property (and others) are defined in the UITextInputTraits protocol, found in the header of the same name. - -- Conrad Shultz Synthetiq Solutions www.synthetiqsolutions.com -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.7 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iD8DBQFNZCVfaOlrz5+0JdURAoXBAJ9Fhl7fGpT8pIg14k8+SzZoVH5d5wCdEXrs zhTG6HsjNloUSq9ybExKlPg= =mSiR -END PGP SIGNATURE- ___ 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
Re: Trouble retrieving selection from NSArrayController
On Feb 22, 2011, at 15:04, Ayers, Joseph wrote: I understood from Scott Stevensons book that in 32bit mode you had to declare the instance variables. Nope, not for Core Data (not unless you need instance variables *of your own* to implement custom properties or for some other reason). Core Data doesn't use instance variables internally at all (for your properties, I mean). See: http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/CoreData/Articles/cdAccessorMethods.html%23//apple_ref/doc/uid/TP40002154-SW9 IMO, this documentation is slightly confusing. You can *EITHER* declare the properties for Core Data-supplied scalar accessor methods (TapeName, TapeDate, Notes, VideoClip) in a class extension -- Tapes () -- and use @dynamic for each one in your implementation *OR* declare them in a non-existent category -- Tapes (TapesAccessors), if you follow the documentation's pattern -- and avoid the need for @dynamic. The documentation doesn't make it clear that there are 2 ways of doing it. In the case of the add/remove accessors, you can't use @dynamic to tell the compiler about the Core Data-supplied methods, so you have to use the non-existent category technique. With your current class definition, the instance variables will be ignored completely. They will be nil unless you put something in them manually, and if you do that they have no effect on the Core Data properties. ___ 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
NSTextView truncating right side when printed...
Hello, I'm trying to print an NSTextView of HTML code.The right side is truncated on the actual printout.Suggestions to correct this are appreciated. Thanks, Bruce ___ 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
Re: NSTextView truncating right side when printed...
On 23/02/2011, at 11:24 AM, Bruce Cresanta wrote: I'm trying to print an NSTextView of HTML code.The right side is truncated on the actual printout.Suggestions to correct this are appreciated. What do you want it to do to be 'correct'? What have you tried? It's typical for HTML code to not be wrapped, so long lines run on until a newline is encountered. I believe text views arrange for there to be one column of n pages for a print layout by default, so what you're getting is exactly what I'd expect. If you want it to word-wrap, set up the text view to word wrap. If you want it to tile across a number columns to accommodate the text, change the print parameters to do that. --Graham ___ 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
Re: NSTextView truncating right side when printed...
I've tried word wrap, but I haven't tried character wrap yet.I thought it might have to do with layout in IB, but that is false because of the underlying text system/pdf.I don't understand your comment about tiling. Bruce On Feb 22, 2011, at 4:44 PM, Graham Cox wrote: On 23/02/2011, at 11:24 AM, Bruce Cresanta wrote: I'm trying to print an NSTextView of HTML code.The right side is truncated on the actual printout.Suggestions to correct this are appreciated. What do you want it to do to be 'correct'? What have you tried? It's typical for HTML code to not be wrapped, so long lines run on until a newline is encountered. I believe text views arrange for there to be one column of n pages for a print layout by default, so what you're getting is exactly what I'd expect. If you want it to word-wrap, set up the text view to word wrap. If you want it to tile across a number columns to accommodate the text, change the print parameters to do that. --Graham ___ 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
Re: Accessing a managedObject property from within an accessor of another property
In my Note entity:
self = (Note *)0x20027bda0
In my .h file have this property defined: @property (nonatomic, retain)
NSNumber * isFlagged; and this in .m @dynamic isFlagged; and no custom accessors
New code in my Note entity:
- (void)setIsEncrypted:(NSNumber *)value {
// see po #1 which I typed here
[self willChangeValueForKey:@isFlagged];
[self setPrimitiveValue:value forKey:@isFlagged];
[self didChangeValueForKey:@isFlagged];
// see po #2 which I typed here
[self willChangeValueForKey:@isEncrypted];
[self setPrimitiveValue:value forKey:@isEncrypted];
[self didChangeValueForKey:@isEncrypted];
// see po #3 which I typed here
}
po #1
po self
Note uid:319649395851582
category:None
isFlagged:0
isEncrypted:0
po #2
po self
Note uid:319649395851582
category:None
isFlagged:1
isEncrypted:0
po #3
po self
Breakpoint 28, -[SRMainWindowController toggleLock:] (self=0x2000df5e0,
_cmd=0x1000a9239, sender=0x2000df5e0) at SRMainWindowController.m:2897
2897[note setIsEncrypted:[NSNumber numberWithBool:YES]];
The program being debugged stopped while in a function called from GDB.
When the function (_NSPrintForDebugger) is done executing, GDB will silently
stop (instead of continuing to evaluate the expression containing
the function call).
Here's a backtrace right after po #3 before I'm out of setIsEncrypted
backtrace
#0 -[SRMainWindowController toggleLock:] (self=0x2000df5e0, _cmd=0x1000a9239,
sender=0x2000df5e0) at SRMainWindowController.m:2897
#1 0x00010002dae9 in -[SRMainWindowController getEncryptionKey]
(self=0x2000df5e0, _cmd=0x1000a7210) at SRMainWindowController.m:2948
#2 0x000198d2 in -[Note category] (self=0x20027bda0,
_cmd=0x7fff85450184) at Note.m:257
#3 0x000189c8 in -[Note description] (self=0x20027bda0,
_cmd=0x7fff83c821e8) at Note.m:56
#4 0x7fff868a386b in _NSPrintForDebugger ()
#5 function called from gdb
#6 -[Note setIsEncrypted:] (self=0x20027bda0, _cmd=0x1000a6eb8,
value=0x7fff70886280) at Note.m:206
#7 0x00010002d5c9 in -[SRMainWindowController toggleLock:]
(self=0x2000df5e0, _cmd=0x1000a9239, sender=0x2000867e0) at
SRMainWindowController.m:2897
#8 0x7fff83b2afbf in -[NSToolbarButton sendAction:to:] ()
#9 0x7fff8379c135 in -[NSToolbarItemViewer mouseDown:] ()
#10 0x7fff8368934f in -[NSWindow sendEvent:] ()
#11 0x7fff835bea86 in -[NSApplication sendEvent:] ()
#12 0x7fff835554da in -[NSApplication run] ()
#13 0x7fff8354e1a8 in NSApplicationMain ()
#14 0x00016b60 in main (argc=1, argv=0x7fff5fbff628) at
main.m:13___
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Re: Accessing a managedObject property from within an accessor of another property
SCENARIO 1:
The thread is:
0 - [SRMainWindowController toggleLock:] //self = (SRMainWindowController *)
0x20009d440
1-[NSToolbarButton sendAction:to:]
- (IBAction)toggleLock:(id)sender {
NSError *fetchError = nil;
NSArray *fetchResults;
NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
NSEntityDescription *entity = [NSEntityDescription
entityForName:@Note inManagedObjectContext:[self managedObjectContext]];
[fetchRequest setEntity:entity];
fetchResults = [[self managedObjectContext]
executeFetchRequest:fetchRequest error:fetchError];
Note *note = nil;
if (fetchRequest != nil [fetchResults count] == 1) {
note = [fetchResults objectAtIndex:index]; //note = (Note
*)0x20027bfe0
}
if (note) {
[note setIsEncrypted:[NSNumber numberWithBool:YES]]; // see below
}
}
When I jump into note setIsEncrypted:[NSNumber numberWithBool:YES]]; in the
Note managedObject
self = (Note *)0x20027bfe0 // same as above
value = (NSCFBoolean *) 0x7fff70886280
po self
Note uid:319649395851582
category:None
isEncrypted:0
isFlagged:0
(gdb)
- (void)setIsEncrypted:(NSNumber *)value {
[self willChangeValueForKey:@isEncrypted];
[self setPrimitiveValue:value forKey:@isEncrypted];
[self didChangeValueForKey:@isEncrypted];
// see backtrace
}
As soon as I po after the setPrimitive I get:
Breakpoint 26, -[SRMainWindowController toggleLock:] (self=0x20009d440,
_cmd=0x1000a92b1, sender=0x20009d440) at SRMainWindowController.m:2891
2891if (fetchRequest != nil [fetchResults count] == 1) {
The program being debugged stopped while in a function called from GDB.
When the function (_NSPrintForDebugger) is done executing, GDB will silently
stop (instead of continuing to evaluate the expression containing
the function call).
#0 -[Note setIsEncrypted:] (self=0x2000b7600, _cmd=0x1000a6eb8,
value=0x7fff70886280) at Note.m:206
#1 0x00010002d5c9 in -[SRMainWindowController toggleLock:]
(self=0x200078f80, _cmd=0x1000a9239, sender=0x2000a0c20) at
SRMainWindowController.m:2897
#2 0x7fff83b2afbf in -[NSToolbarButton sendAction:to:] ()
#3 0x7fff8379c135 in -[NSToolbarItemViewer mouseDown:] ()
#4 0x7fff8368934f in -[NSWindow sendEvent:] ()
#5 0x7fff835bea86 in -[NSApplication sendEvent:] ()
#6 0x7fff835554da in -[NSApplication run] ()
#7 0x7fff8354e1a8 in NSApplicationMain ()
#8 0x00016b60 in main (argc=1, argv=0x7fff5fbff628) at main.m:13
SCENARIO 2:
I created a second scenario as a test to try to shed more light. Scenario 1
and scenario 2 are **exactly** the same but I'm setting another NSNumber,
isFlagged to YES in the setIsEncrypted accessor and it gets set correctly
without an exception but isEncrypted still causes one.
In SRMainWindowController:
self = (SRMainWindowController *)0x2000df5e0
note = (Note *)0x20027bda0
see earlier email for second
part___
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CoreData migration opens ~ file by mistake
I'm finally trying to do my first CoreData migration using the new style 10.5 built-in migration tools. I'd abandoned my ad-hoc Tiger one a while back and finally needed to migrate. I'm building on Snow Leopard, and bugs and glitches aside (such as the workaround for migration for Leopard deployment built on Snow Leopard), it's mostly working. But what it boils down to is when I deploy it on Leopard, the migration is correctly performed, but then the app insists upon re-opening the foo~.ext file (the backup with the tilde) instead of the actual upgraded data file itself. The simple solution is just to shut the doc w/o saving, then re-open it. All problems solved when I do that, but I don't really want to ask my users to do it. It behaves just fine on Snow Leopard. I found some old posts referencing the issue, such as: http://lists.apple.com/archives/cocoa-dev/2009/Nov/msg01431.html But no functional solutions. I tried implementing mmalc's custom NSDocumentController subclass, but the issue persisted. So I dropped it out and left just the standard modification to configurePersistentStoreCoordinatorForURL: to turn on forKey:NSMigratePersistentStoresAutomaticallyOption. Sometimes the ~ pops up in the title bar, sometimes it doesn't. The doc is never actually save-able. Did anyone ever discover a viable solution? -Jim ___ 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
Re: Accessing a managedObject property from within an accessor of another property
That's a lot of information you posted. :) Unfortunately, *based on the posted information* there's nothing obviously wrong except that you've shot yourself in the foot using the debugger. Let's look, for example, at what one of the backtraces is telling you. You triggered this by typing 'po self' in the debugger: On Feb 22, 2011, at 19:34, Brad Stone wrote: Breakpoint 28, -[SRMainWindowController toggleLock:] (self=0x2000df5e0, _cmd=0x1000a9239, sender=0x2000df5e0) at SRMainWindowController.m:2897 2897 [note setIsEncrypted:[NSNumber numberWithBool:YES]]; The program being debugged stopped while in a function called from GDB. When the function (_NSPrintForDebugger) is done executing, GDB will silently stop (instead of continuing to evaluate the expression containing the function call). A function called from the debugger as a result of 'po self' failed. What function? It's not clear yet, but it *is* clear what failed -- that function directly or indirectly called 'toggleLock:' *again* -- the method you were in when you started all this debugging activity. Why did it stop? It hit the breakpoint that you put in that code. This backtrace is enlightening, unlike the earlier ones, because it shows what the debugger was trying to do: Here's a backtrace right after po #3 before I'm out of setIsEncrypted backtrace #0 -[SRMainWindowController toggleLock:] (self=0x2000df5e0, _cmd=0x1000a9239, sender=0x2000df5e0) at SRMainWindowController.m:2897 #1 0x00010002dae9 in -[SRMainWindowController getEncryptionKey] (self=0x2000df5e0, _cmd=0x1000a7210) at SRMainWindowController.m:2948 #2 0x000198d2 in -[Note category] (self=0x20027bda0, _cmd=0x7fff85450184) at Note.m:257 #3 0x000189c8 in -[Note description] (self=0x20027bda0, _cmd=0x7fff83c821e8) at Note.m:56 The debugger was trying to execute [note description], which is what it does to get a description to display as a result of 'po note'. Normally, the standard 'description' in NSObject is called, which just prints the address of the object and its class. You, apparently have overridden 'description' in the Note class, and it apparently invokes 'category', which invokes '-[SRMainWindowController getEncryptionKey]', which invokes 'toggleLock:', which is why it hits the breakpoint again. Note that (apparently) if isEncrypted is NO, then 'getEncryptionKey' isn't invoked, and so 'toggleLock' isn't invoked either. That's why setting isFlagged instead didn't crap out in the debugger. Other than indicating an inappropriate design of your 'description' override, there's absolutely no indication of anything wrong here at all. It looks like you've been chasing a chimera. :) Obviously I may be overlooking something, but step 1 is to fix your 'description' method so that it doesn't cause Core Data fetches. #4 0x7fff868a386b in _NSPrintForDebugger () #5 function called from gdb #6 -[Note setIsEncrypted:] (self=0x20027bda0, _cmd=0x1000a6eb8, value=0x7fff70886280) at Note.m:206 #7 0x00010002d5c9 in -[SRMainWindowController toggleLock:] (self=0x2000df5e0, _cmd=0x1000a9239, sender=0x2000867e0) at SRMainWindowController.m:2897 #8 0x7fff83b2afbf in -[NSToolbarButton sendAction:to:] () #9 0x7fff8379c135 in -[NSToolbarItemViewer mouseDown:] () #10 0x7fff8368934f in -[NSWindow sendEvent:] () #11 0x7fff835bea86 in -[NSApplication sendEvent:] () #12 0x7fff835554da in -[NSApplication run] () #13 0x7fff8354e1a8 in NSApplicationMain () #14 0x00016b60 in main (argc=1, argv=0x7fff5fbff628) at main.m:13 ___ 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
[Job Posting] Princeton Satellite Systems
Princeton Satellite Systems is seeking a software engineer to help develop innovative applications on Mac OS X and on IOS. You'll work on a small team with experienced aerospace engineers to maintain and upgrade our existing applications and develop new software based on cutting-edge research and development. Our software development work centers on our VisualCommander http://www.psatellite.com/vc/index.php product. Our iPhone products include ChessNotePad and the soon to be released SpaceDefense game. http://www.psatellite.com/iphone/iphone.php Requirements: - Strong working knowledge of Cocoa development and related technologies including Core Data - Objective-C and C/C++ experience, especially in Mac OS X and UNIX environments - OpenGL programming - BS or equivalent in computer science - Ability to self-motivate and work independently to accomplish tasks - Excellent communication and interpersonal skills - US citizen or permanent resident Desirable: - Strong mathematical background - Java, WebLogic, Axis - iPhone development experience - Familiarity with MATLAB - Experience managing small groups of software engineers Princeton Satellite Systems has offices in Minneapolis, MN and Plainsboro, NJ. A remote location (working at home) is possible although not preferred. Please specify your location preference, or if you have none, when responding. Princeton Satellite Systems, Inc. is an Equal Opportunity Employer, m/f/d/v. We offer a competitive compensation and benefits package including membership in a technical society, 401(k) and health/life/disability insurance. We pride ourselves on offering flexibility: employees are paid hourly and can work those hours at any time, although some should be during regular business hours. The nominal workweek is 40 hours and the minimum work week for health and disability benefits is 30 hours. Part-time may be an option for any job, please inquire if you are interested! Email resumes to Michael Paluszek, m...@psatellite.com. Michael Paluszek President Princeton Satellite Systems 6 Market Street, Suite 926 Plainsboro, NJ 08536 Phone: 609 275-9606 Fax: 609 275-9609 m...@psatellite.com ___ 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
A TableView Binding question
Hello everyone. I have a TableView, connected to an ArrayController, configured to work against a CoreData Entity - the normal way, similar to what you find in the template bindings when you drag an Entity from the data-modelling tool into a View in Interface-Builder. Let's say the Entity is the venerable Employees. Now, I need one of the table-columns, to be bound NOT to a specific attribute of the entity (like firstName or salary) but rather to the entity (managed object) itself. Of course the Entity is not something presentable on the column --- but I specify (and write) a specific ValueTransformer object that should calculate the displayed content from the managed object. For example -- Think of a ValueTransformer that given an Employee instance, applies some logic and presents either a full name (First name attached to last name) or a nickname if it exists, or ... whatever comes to mind. It needs access to the entity instance, and returns a simple NSString. I can't get this to work --- because I don't know what to write in the binding of the TableColumn. It seems there is no way to say Just the entity within IB's window. I select the table column. I Bind to: ArrayController I set the Controller key to: arrangedObjects and now... I don't know what to write in the Model Key Path field. I guessed and tried the following values, to no avail. I always get a binding error: 1. Leave the Model key path field blank 2. self 3. @self 4. SELF 5. @SELF 6. @ 7. @ I believe something is missing in the visual description in IB. when you bind against the arrangedObjects of the ArrayController, you actually indirectly specify that the array controller instantiates some Enumerator (Iterator) and the Model Key Path is applied to that enumerator. But what key-path do you ask from enumerator to bring back itself?. I tried to google around, and to read the Bindings programing guide, and saw absolutely NOTHING about this. no specification or list of the available meta keys. Here's a snapshot of similar situation: I have tried to send this message to the list with a screenshot of my IB binding inspector window -- but it was rejected. So here it is again, without attachments this time. Any hint will be greatly appreciated.___ 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
System Configuration Framework Notifications
I'm trying to receive notifications through System configuration framework when Location changes. I was able to get the current Set applied but I can't even grasp on notification subject even looking at some code posted by apple. Seems there are very few informations out there and the references are somewhat obscure (at least to me). System Configuration Programming Guide give an overlook on the framework without going too much in-depth. Can someone please make me an example on how to set up notifications in SCPreferences? Thank you ___ 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
Spotcolors in Cocoa
Hi all, I'm working on an application which has to generate PDF's with spot colors. I have been experimenting with Cocoa and NSColor but can't seem to find how to create a spot color in Cocoa. Does anyone know how to do this? Looking for Web-to-Print Solutions? Visit our website : http://www.vit2print.com This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information and/or information protected by intellectual property rights. If you are not the intended recipient, please note that any review, dissemination, disclosure, alteration, printing, copying or transmission of this e-mail and/or any file transmitted with it, is strictly prohibited and may be unlawful. If you have received this e-mail by mistake, please immediately notify the sender and permanently delete the original as well as any copy of any e-mail and any printout thereof. We may monitor e-mail to and from our network. NSS nv - Tieltstraat 167 - 8740 Pittem - Belgium ___ 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
Re: A TableView Binding question
On Feb 21, 2011, at 23:58, Motti Shneor wrote: I can't get this to work --- because I don't know what to write in the binding of the TableColumn. It seems there is no way to say Just the entity within IB's window. I select the table column. I Bind to: ArrayController I set the Controller key to: arrangedObjects and now... I don't know what to write in the Model Key Path field. I guessed and tried the following values, to no avail. I always get a binding error: 1. Leave the Model key path field blank 2. self 3. @self 4. SELF 5. @SELF 6. @ 7. @ The correct answer is #2: self. What's the binding error when you use that? Are you talking about an error in IB or a runtime error? I believe something is missing in the visual description in IB. when you bind against the arrangedObjects of the ArrayController, you actually indirectly specify that the array controller instantiates some Enumerator (Iterator) and the Model Key Path is applied to that enumerator. But what key-path do you ask from enumerator to bring back itself?. It is a little funky, because IB shows the binding textually as ArrayController.arrangedObjects.x.y.x, but there's no actual key path like that. (An array property is illegal in the middle of a key path.) Instead, there are two key paths -- ArrayController.arrangedObjects and x.y.z -- and it's the internal implementation of the Table Column value binding that bridges between the array represented by the first path and the specific array element needed by the second. ___ 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
Looking for help scanning entire drives
I need to write an application that will scan entire drives and compare files between the 2 drives. I have already something working but in situations where there are a lot of files (hundreds of thousands), the memory consumption becomes a problem, leading to slow performance when virtual memory is used and, ultimately, sometimes to crashes in malloc. Of course, I could go with little chunks, comparing, but I need to present a window showing which copies of files are more recent on one drive and which ones are more recent on the other drive, so I need to keep a list of all the files on one drive that are more recent than their counterparts on the other drive, and vice versa. This preferably would have to be done in Cocoa, since I already have a working solution. Knowing that I have to support 10.5 but run under 10.6, what would be the best way to have a crack at this problem? All suggestions are welcome! -Laurent. -- Laurent Daudelin AIM/iChat/Skype:LaurentDaudelin http://www.nemesys-soft.com/ Logiciels Nemesys Software laur...@nemesys-soft.com ___ 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
Re: A TableView Binding question
On Mon, Feb 21, 2011 at 11:58 PM, Motti Shneor mo...@spectrum-reflections.com wrote: Now, I need one of the table-columns, to be bound NOT to a specific attribute of the entity (like firstName or salary) but rather to the entity (managed object) itself. Of course the Entity is not something presentable on the column --- but I specify (and write) a specific ValueTransformer object that should calculate the displayed content from the managed object. I must ask what circumstance requires you to bind a column directly to the managed objects. Nobody should be querying the table view about its objects; they should be asking the controller instead. You can use a custom NSManagedObject subclass to provide a property whose value can be rendered in the table view. I'm not claiming you are taking the wrong approach, but I would like to consider the possibility of doing it the other way. --Kyle Sluder ___ 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
