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 fin
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" wrote:
> My app creates lots of MyOperations (subclass of NSOperation) and puts them
> into an N
On 4 Dec 2012, at 17:49, Mike Abdullah 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 Instruments, select some templ
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" wrote:
>
> On 4 Dec 2012, at 17:49, Mike Abdullah wrote:
>
>> You have a performance problem. Thus you should use
On 4 Dec 2012, at 10:29, Gerriet M. Denkmann 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 is: start it with
On 4 Dec 2012, at 18:10, Roland King 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 repeatedly for an adm
On 4 Dec 2012, at 18:31, "jonat...@mugginsoft.com"
wrote:
>
>
> On 4 Dec 2012, at 10:29, Gerriet M. Denkmann 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
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 suc
On Dec 4, 2012, at 7:49 AM, Brad O'Hearne 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 network,
> server, or Intern
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
ma
On 4 Dec 2012, at 11:48, Gerriet M. Denkmann wrote:
>
> On 4 Dec 2012, at 18:10, Roland King 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 Le
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 ope
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 the
On Dec 4, 2012, at 3:48 AM, Gerriet M. Denkmann 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 multithreaded programming. :-P
On Dec 4, 2012, at 10:15 AM, Gerriet M. Denkmann 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 separate issue, and you
On Dec 4, 2012, at 9:54 AM, 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.
But in your earlier thread you showed a code snippet that included a co
On Dec 4, 2012, at 4:29 AM, Gerriet M. Denkmann 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 is: start it wi
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" wrote:
> I have an app which uses NS
On 5 Dec 2012, at 01:33, Jens Alfke wrote:
>
> On Dec 4, 2012, at 9:54 AM, 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.
>
> But in your
On Dec 4, 2012, at 10:58 AM, "Gerriet M. Denkmann" 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 NSTextField.
>
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
___
Cocoa-de
On 5 Dec 2012, at 01:55, Mike Abdullah 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, and it makes my app un
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 t
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 blow
On 3 Dec 2012, at 18:13, Nick Zitzmann wrote:
>
> On Dec 1, 2012, at 10:33 AM, Mike Abdullah 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". I wrote up the details here:
>>
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 language
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];
NSSt
On Nov 29, 2012, at 3:09 AM, tshanno 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: http://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 wrote:
> Hi,
>
> I'm relatively new to objective C
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?
https://developer.apple.com/library/mac/#documentation/AudioVi
>
>
> 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
> 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?
>
>
> https://developer.apple.com/library/mac/#documentat
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 recog
On 4 Dec 2012, at 19:01, "Gerriet M. Denkmann" wrote:
>
> On 5 Dec 2012, at 01:55, Mike Abdullah 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.
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 '' to parameter of incompatible type
> 'id''
You need to declare the class of 'self' as conforming to the
AVCaptureVideoDataOutputSampleBu
>> 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?
>>
>>
>> https://developer.apple.com/library/mac
On 5 Dec 2012, at 02:58, Kyle Sluder 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 [ self.operationQueue s
On Tue, Dec 4, 2012, at 05:02 PM, Gerriet M. Denkmann wrote:
>
> On 5 Dec 2012, at 02:58, Kyle Sluder 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 Cp
On Dec 4, 2012, at 7:33 PM, Kyle Sluder 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.
Apologies, but I have
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 switchin
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 doSome
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 doSomethingAndDontExp
On Dec 4, 2012, at 8:56 PM, Gerriet M. Denkmann 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 **explanatioP = urge
On 5 Dec 2012, at 12:59, Greg Parker wrote:
> On Dec 4, 2012, at 8:56 PM, Gerriet M. Denkmann 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
On 5 Dec 2012, at 11:41, Kyle Sluder wrote:
>
> On Dec 4, 2012, at 8:00 PM, Jens Alfke wrote:
>
>>
>> On Dec 4, 2012, at 7:33 PM, Kyle Sluder wrote:
>>
>>> Yeah, it sounds like you're saturating the thread pool due to
>>> non-CPU-bound operations. NSOpQ is going to spend its entire tim
On 5 Dec 2012, at 01:29, Jens Alfke wrote:
>
> On Dec 4, 2012, at 3:48 AM, Gerriet M. Denkmann 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.
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