My app creates lots of MyOperations (subclass of NSOperation) and puts them
into an NSOperationQueue.
I would expect that the app thus remains responsive, but sometimes it is not.
A sure way to beach-ball my app is: start it with a few hundred operations
(which will take about 20 seconds to
You have a performance problem. Thus you should use Instruments to see what is
going on, rather than hope we can tell you from vague snippets of code.
On 4 Dec 2012, at 10:29, Gerriet M. Denkmann gerr...@mdenkmann.de wrote:
My app creates lots of MyOperations (subclass of NSOperation) and puts
On 4 Dec 2012, at 17:49, Mike Abdullah cocoa...@mikeabdullah.net wrote:
You have a performance problem. Thus you should use Instruments to see what
is going on, rather than hope we can tell you from vague snippets of code.
Maybe I should use Instruments, problem is: I cannot.
I start
Can you not run Instruments from the 'Profile' button on Xcode? It should start
the process and attach to it and go from there.
On 4 Dec, 2012, at 7:02 PM, Gerriet M. Denkmann gerr...@mdenkmann.de wrote:
On 4 Dec 2012, at 17:49, Mike Abdullah cocoa...@mikeabdullah.net wrote:
You have a
On 4 Dec 2012, at 10:29, Gerriet M. Denkmann gerr...@mdenkmann.de wrote:
My app creates lots of MyOperations (subclass of NSOperation) and puts them
into an NSOperationQueue.
I would expect that the app thus remains responsive, but sometimes it is not.
A sure way to beach-ball my app
On 4 Dec 2012, at 18:10, Roland King r...@rols.org wrote:
Can you not run Instruments from the 'Profile' button on Xcode? It should
start the process and attach to it and go from there.
I got the Leaks Instrument to work this way (no Leaks) But all other
Instruments just prompted
On 4 Dec 2012, at 18:31, jonat...@mugginsoft.com jonat...@mugginsoft.com
wrote:
On 4 Dec 2012, at 10:29, Gerriet M. Denkmann gerr...@mdenkmann.de wrote:
My app creates lots of MyOperations (subclass of NSOperation) and puts them
into an NSOperationQueue.
I would expect that the
In general -- any alert that requires user attention (especially ones with
multiple button alternatives) can be left on the screen indefinitely by a user.
If you are monitoring environmental conditions (such as network, server, or
Internet reachability) that arise, it is always possible that
On Dec 4, 2012, at 7:49 AM, Brad O'Hearne br...@bighillsoftware.com wrote:
In general -- any alert that requires user attention (especially ones with
multiple button alternatives) can be left on the screen indefinitely by a
user. If you are monitoring environmental conditions (such as
Sorry for the delay. I¹ve been inaccessible for reasons I won¹t get into.
I have tried it without setting any layers in IB. I think you may be
correct about the copies. Another thing I don¹t know is if each cell simply
uses the prototype to draw in the correct location, or it it does actually
On 4 Dec 2012, at 11:48, Gerriet M. Denkmann gerr...@mdenkmann.de wrote:
On 4 Dec 2012, at 18:10, Roland King r...@rols.org wrote:
Can you not run Instruments from the 'Profile' button on Xcode? It should
start the process and attach to it and go from there.
I got the Leaks
My app creates lots of MyOperations (subclass of NSOperation) and puts them
into an NSOperationQueue.
These operations do not do any I/O - they just use the Cpu.
When I make some other app active and then try again to make my app active, my
app beach-balls. When all my operations have finished,
I have an app which uses NSOperations inside an NSOperationQueue. These
operations do not do any I/O - just Cpu. No swapping is taking place.
When I set [ self.operationQueue setMaxConcurrentOperationCount: 1 ] each
operation takes on average 200 msec., measured by NSDate.
With 2 concurrent
WAG - the # of cores - 1?
On Dec 4, 2012, at 12:54 PM, Gerriet M. Denkmann wrote:
My app creates lots of MyOperations (subclass of NSOperation) and puts them
into an NSOperationQueue.
These operations do not do any I/O - they just use the Cpu.
When I make some other app active and then
On Dec 4, 2012, at 3:48 AM, Gerriet M. Denkmann gerr...@mdenkmann.de wrote:
My app creates lots of MyOperations (subclass of NSOperation) and puts them
into an NSOperationQueue.
I would expect that the app thus remains responsive, but sometimes it is not.
Welcome to the joys of
On Dec 4, 2012, at 10:15 AM, Gerriet M. Denkmann gerr...@mdenkmann.de wrote:
Is this to be expected? Or does my app has some hidden flaws? If so, where
should I start looking?
Instruments. This is exactly what CPU profiling is for. If you can’t get
Instruments to work for you, that’s a
On Dec 4, 2012, at 9:54 AM, Gerriet M. Denkmann gerr...@mdenkmann.de wrote:
My app creates lots of MyOperations (subclass of NSOperation) and puts them
into an NSOperationQueue.
These operations do not do any I/O - they just use the Cpu.
But in your earlier thread you showed a code snippet
On Dec 4, 2012, at 4:29 AM, Gerriet M. Denkmann gerr...@mdenkmann.de wrote:
My app creates lots of MyOperations (subclass of NSOperation) and puts them
into an NSOperationQueue.
I would expect that the app thus remains responsive, but sometimes it is not.
A sure way to beach-ball my app
If your operations are purely CPU-bound, the whole point of GCD is to manage
this for you. With the default number of concurrent operations,
NSOperationQueue does exactly that. Have you tried with that setting?
On 4 Dec 2012, at 18:15, Gerriet M. Denkmann gerr...@mdenkmann.de wrote:
I have an
On 5 Dec 2012, at 01:33, Jens Alfke j...@mooseyard.com wrote:
On Dec 4, 2012, at 9:54 AM, Gerriet M. Denkmann gerr...@mdenkmann.de wrote:
My app creates lots of MyOperations (subclass of NSOperation) and puts them
into an NSOperationQueue.
These operations do not do any I/O - they just
On Dec 4, 2012, at 10:58 AM, Gerriet M. Denkmann gerr...@mdenkmann.de wrote:
When an operation has finished, it sends a message to the app delegate. Every
20th time, the app delegate then does: self.aValue = ...some number ...
@property (assign) NSUInteger aValue; // aValue is bound to some
Please don't create lots of different message threads for a single
issue/discussion.
Sticking to a single thread makes it much easier to follow by keeping all of
the context together.
Thanks.
-- Chris
-- cocoa-dev's other moderator
___
On 5 Dec 2012, at 01:55, Mike Abdullah cocoa...@mikeabdullah.net wrote:
If your operations are purely CPU-bound, the whole point of GCD is to manage
this for you. With the default number of concurrent operations,
NSOperationQueue does exactly that. Have you tried with that setting?
I have,
On Tue, Dec 4, 2012, at 10:15 AM, Gerriet M. Denkmann wrote:
I have an app which uses NSOperations inside an NSOperationQueue. These
operations do not do any I/O - just Cpu. No swapping is taking place.
When I set [ self.operationQueue setMaxConcurrentOperationCount: 1 ] each
operation takes
On Wed, 5 Dec 2012 01:15:11 +0700, Gerriet M. Denkmann said:
I have an app which uses NSOperations inside an NSOperationQueue. These
operations do not do any I/O - just Cpu. No swapping is taking place.
Do your operations use a lot of memory? Even though you're not swapping, maybe
you're
On 3 Dec 2012, at 18:13, Nick Zitzmann n...@chronosnet.com wrote:
On Dec 1, 2012, at 10:33 AM, Mike Abdullah cocoa...@mikeabdullah.net wrote:
I've been trying to hunt down a problem where Core Data will occasionally
refuse to save with the error
Dangling reference to an invalid object.
Hi,
I have developed sample ***COCOA-64 bit*** application using
Webkit Framework with all plug In settings enabled (setJavaEnabled:YES
setPlugInsEnable:YES). I have tried to load Juniper SSL webvpn url which in
turn uses Java applet plug-In to launch VPN connection in the webview. This
Hi,
I'm relatively new to objective C and Cocoa but not to C and not to
object-orented programming. I've found with other languages that browsing
blogs which address different aspects of the language with some occasional code
can be useful in terms of learning the ins and outs of the
I have been digging for a couple of weeks now and I have progressed to the
point where I have the AVCaptureDevice and the session.
Here's what I need help/guidance/assistance on:
I want to capture the video images from which ever camera device I select
and using those images, real time, take the
I have the following code that generates images. It works perfectly in
10.5 but doesn't in 10.6. in 10.6 the images are laid on in the right
place,
- (IBAction)generateKitImages:(id)sender;
{
NSObject *kit;
kit = [[kits selectedObjects] objectAtIndex:0];
On Nov 29, 2012, at 3:09 AM, tshanno tsha...@icloud.com wrote:
I've done an Internet search but most of the blogs I've found are out of date
and/or don't have regular postings. Anyone have any suggestions for some
blogs I might check out?
NSBlog: http://www.mikeash.com/pyblog/
NSHipster:
Hello,
I know about 2 that are great and updated regularly :
http://www.mikeash.com/pyblog/
http://nshipster.com
Not oriented towards your interests tho, but very great !
Hope they will please you,
++GG
On Nov 29, 2012, at 12:09, tshanno tsha...@icloud.com wrote:
Hi,
I'm relatively
On 3 Dec 2012, at 06:02, gary.gard...@brokensoftware.com wrote:
I have been digging for a couple of weeks now and I have progressed to the
point where I have the AVCaptureDevice and the session.
Here's what I need help/guidance/assistance on:
I want to capture the video images from
On Dec 2, 2012, at 22:02 , gary.gard...@brokensoftware.com wrote:
Can anyone tell me what the next steps are? Any snippets of code that I
can look at? I'm sure I'm not the first to try to do this.
Have you looked here?
On 3 Dec 2012, at 06:02, gary.gard...@brokensoftware.com wrote:
I have been digging for a couple of weeks now and I have progressed to
the
point where I have the AVCaptureDevice and the session.
Here's what I need help/guidance/assistance on:
I want to capture the video images from
On Dec 2, 2012, at 22:02 , gary.gard...@brokensoftware.com wrote:
Can anyone tell me what the next steps are? Any snippets of code that I
can look at? I'm sure I'm not the first to try to do this.
Have you looked here?
The iOS programming guide says to use the items in the subject line to tell iOS
the docs your app can open. I haven done this and installed my app in an iPad.
I have DropBox on the iPad and expected to have DropBox recognize my app for
opening a file in the box of my type. But it does not
On 4 Dec 2012, at 19:01, Gerriet M. Denkmann gerr...@mdenkmann.de wrote:
On 5 Dec 2012, at 01:55, Mike Abdullah cocoa...@mikeabdullah.net wrote:
If your operations are purely CPU-bound, the whole point of GCD is to manage
this for you. With the default number of concurrent operations,
On Dec 4, 2012, at 16:50 , gary.gard...@brokensoftware.com wrote:
The setSampleBufferDelegate:self queue:queue gives a warning in XCode that
says Sending 'my object name here' to parameter of incompatible type
'id'AVCaptureVideoDataOutputSampleBufferDelegate'
You need to declare the class of
On Dec 2, 2012, at 22:02 , gary.gard...@brokensoftware.com wrote:
Can anyone tell me what the next steps are? Any snippets of code that
I
can look at? I'm sure I'm not the first to try to do this.
Have you looked here?
On 5 Dec 2012, at 02:58, Kyle Sluder k...@ksluder.com wrote:
On Tue, Dec 4, 2012, at 10:15 AM, Gerriet M. Denkmann wrote:
I have an app which uses NSOperations inside an NSOperationQueue. These
operations do not do any I/O - just Cpu. No swapping is taking place.
When I set [
On Tue, Dec 4, 2012, at 05:02 PM, Gerriet M. Denkmann wrote:
On 5 Dec 2012, at 02:58, Kyle Sluder k...@ksluder.com wrote:
On Tue, Dec 4, 2012, at 10:15 AM, Gerriet M. Denkmann wrote:
I have an app which uses NSOperations inside an NSOperationQueue. These
operations do not do any I/O -
On Dec 4, 2012, at 7:33 PM, Kyle Sluder k...@ksluder.com wrote:
Yeah, it sounds like you're saturating the thread pool due to
non-CPU-bound operations. NSOpQ is going to spend its entire time
spawning and switching to threads while you append more and more
operations to the queue.
On Dec 4, 2012, at 8:00 PM, Jens Alfke [1]j...@mooseyard.com wrote:
On Dec 4, 2012, at 7:33 PM, Kyle Sluder [2]k...@ksluder.com wrote:
Yeah, it sounds like you're saturating the thread pool due to
non-CPU-bound operations. NSOpQ is going to spend its entire time
spawning and switching
I have (using Arc) a method which works fine:
NSString *explanation;
[ self doSomeThingAndExplain: explanation ];
Now I decided that sometimes I don't need this explanation. So I changed it to:
NSString **explanatioP = urgent ? NULL : explanation; // -- no explicit
ownership...
[ self
NSString *explanation;
[ self doSomeThingAndExplain:( urgent ? NULL : explanation ) ];
I tried some REALLY ugly casts putting __autoreleasing and __strong here and
there around the *s in the explainP but got nowhere, so that's the best I can
come up with apart from writing
On Dec 4, 2012, at 8:56 PM, Gerriet M. Denkmann gerr...@mdenkmann.de wrote:
I have (using Arc) a method which works fine:
NSString *explanation;
[ self doSomeThingAndExplain: explanation ];
Now I decided that sometimes I don't need this explanation. So I changed it
to:
NSString
On 5 Dec 2012, at 12:59, Greg Parker gpar...@apple.com wrote:
On Dec 4, 2012, at 8:56 PM, Gerriet M. Denkmann gerr...@mdenkmann.de wrote:
I have (using Arc) a method which works fine:
NSString *explanation;
[ self doSomeThingAndExplain: explanation ];
Now I decided that sometimes I don't
On 5 Dec 2012, at 11:41, Kyle Sluder k...@ksluder.com wrote:
On Dec 4, 2012, at 8:00 PM, Jens Alfke j...@mooseyard.com wrote:
On Dec 4, 2012, at 7:33 PM, Kyle Sluder k...@ksluder.com wrote:
Yeah, it sounds like you're saturating the thread pool due to
non-CPU-bound operations.
On 5 Dec 2012, at 01:29, Jens Alfke j...@mooseyard.com wrote:
On Dec 4, 2012, at 3:48 AM, Gerriet M. Denkmann gerr...@mdenkmann.de wrote:
My app creates lots of MyOperations (subclass of NSOperation) and puts them
into an NSOperationQueue.
I would expect that the app thus remains
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