Hi Quincey,
The way you broke this down was very helpful, and it turned out to be a
combination of two things you alluded to. I'd been on the right track that it
had to do with NIB objects, and thinking about it as you laid out helped
identify the problem.
On 2011-01-23, at 12:28 AM, Quincey
On 2011-01-23, at 12:59 AM, Dave Keck wrote:
> On the other
> hand, if I understood you correctly in that you're seeing a 10%
> speedup when using GC, then perhaps that would warrant the extra
> effort. On the other-other-hand, it sounds like you might be
> optimizing early.
Sorry the comment ab
Sorry - I forgot to mention that I am indeed wrapping my code in its own
autorelease pool. This should ensure that the only retain count remaining is
from intentional retains by other objects that need to reference my datasets.
Rick
On 2011-01-23, at 12:59 AM, Dave Keck wrote:
> The autorele
Hi Quincy,
Thanks so much for the detailed reply.
On 2011-01-23, at 12:28 AM, Quincey Morris wrote:
>> [...]
>
> You *cannot* rely on GC to satisfy your timing requirements for releasing
> resources used by your application. You can't even rely rely on GC to release
> memory at all, in any d
On 2011-01-23, at 12:04 AM, Dave Keck wrote:
...
>>
> I would use gdb's "info gc-roots 0x" command to determine what
> strong references exist to the objects that are placed in your array.
> Instruments may also have some related functionality.
Thanks - I was focusing on Instruments, a
Thanks Scott,
On 2011-01-22, at 11:58 PM, Scott Ribe wrote:
> You might try something like usleep(1000) just to see what happens. You might
> not need any real delay; you might just need to yield...
Tried the above, but the GC version goes back to ballooning memory usage and
eventual crash.
On 2011-01-20, at 10:54 AM, Rick Hoge wrote:
[...]
> I have overridden the 'finalize' method of the dataset class to print a log
> message before calling [super finalize], and when I perform a single
> processing 'run' in which the client sends a message to the s
I have an application based on the "Cocoa Application" template in Xcode
(x86_64, currently testing on OSX 10.6.5) that listens for client messages
using an NSConnection. Both client and server have been designed for garbage
collection, and are compiled GC-only. The client is a simple command
...
I noticed that, while I scrolled in the tableview, many copies of
these large objects were being created and then immediately
collected.
...
NSCells used to display table content copies the object it display.
Instead of binding the cell value to your object directly, bind it
t
...
The array items are NSDictionaries, and one of these dictionaries
contains a large dataset object that consumes a lot of memory. I
noticed that, while I scrolled in the tableview, many copies of
these large objects were being created and then immediately
collected.
It's
I have a nib file in which entries in an NSTableView are bound to an
NSMutableArray via an NSArrayController. It is used in an application
running under garbage collection.
The array items are NSDictionaries, and one of these dictionaries
contains a large dataset object that consumes a l
Quincey, Keary, thanks for the replies -
...
All worked fine, except that, when the new dictionaries are added
by clicking the add: button, the mutable array managed by the
controller is replaced with a new array (rather than inserting the
new dictionary in the original array). The new
I recently tried a design where a certain object had an
NSMutableDictionary instance variable, which in turn contained an
NSMutableArray entry. After initializing this setup (in -init) as
shown here:
topLevelDictionary = [NSMutableDictionary dictionary]; // An
instance variable - I'm
Just a follow-up. It's not perfect, and I'll revisit the design, but
it does what I need for now.
Specifically my entity has a 'transformable' attribute for which the
values are a custom object class, and this object class has an ivar
that is an NSMutableDictionary. The user can modify ent
Ben, Quincey, Sean, thanks for the comments. Maybe there are some
lower level design issues to rethink.
This pattern is usually a flawed model design. If the properties
are to be this independently mutable, then there should be a
relationship, and/or the complex attribute should be deco
change dictionary in observeValueForKeyPath: to
break out of the loop when there's no real change.
Rick
On May 28, 2009, at 12:34 PM, Rick Hoge wrote:
On 28-May-09, at 10:39 AM, Keary Suska wrote:
On May 28, 2009, at 7:03 AM, Rick Hoge wrote:
I have a core data (doc-based) app in
On 28-May-09, at 10:39 AM, Keary Suska wrote:
On May 28, 2009, at 7:03 AM, Rick Hoge wrote:
I have a core data (doc-based) app in which one of the entities
includes a custom object as a persistent attribute. The custom
object class implements NSCoding, and these objects are saved to
I have a core data (doc-based) app in which one of the entities
includes a custom object as a persistent attribute. The custom object
class implements NSCoding, and these objects are saved to the core
data store with no problem (they are read back correctly etc).
Instance variables of t
I would like to implement a plug-in mechanism which will allow a Cocoa
document-based application to load plugins which will implement
subclasses of NSDocument for different file types. This would allow
custom extension of the application to support 3rd party file types,
and could have s
Thanks for the replies - it's clear that it's a problem in my NSCoding
support (see comment below)
On 29-Jan-09, at 5:18 PM, Nick Zitzmann wrote:
On Jan 29, 2009, at 2:32 PM, Rick Hoge wrote:
-(id)initWithCoder:(NSCoder*)decoder {
self = [super initWithCoder:decoder];
{
self = [[MyPluginSubclass alloc] init]; // I know there will be no
subclasses
[super initWithCoder:decoder];
return self;
}
On 29-Jan-09, at 3:28 PM, Rick Hoge wrote:
I am working on an app in which plugin subclasses are loaded from
bundles at launch time (didFinishLaunching in app
I am working on an app in which plugin subclasses are loaded from
bundles at launch time (didFinishLaunching in app delegate). The base
plugin class is specified in a framework against which the main app is
linked.
I can create instances of these dynamically loaded subclasses, and
assi
Bill, Rob -
Thanks for the replies, and sorry I missed this in the archives.
I have googled about such problems, but did not come up with
anything. Is there a known issue with images and buttons under GC?
Sounds odd.Please file a bug, attaching the application (binary
is good enough
I have a garbage collected app which has been running fine, with no
crashing or leaks and passing nicely using the Xray diagnostic tools.
A problem arose when I added an NSButton to my nib file and assigned
an image to it in Interface Builder (just entering the image name
NSAddTemplate) i
Steve, Quincy: Thank you for the replies!
At the moment I'm working with a non-Core-Data class to achieve the
outline view, using code adapted from the SourceView example. I am
realizing that to be able to archive this and correctly maintain
object graphs, I'll likely have to link the ou
Thanks Volker,
why don't you have an abstract class that holds the children/parent
relationships and make different subclasses for different data types
that all inherit from your abstract class. As far as I understand
your problem, that should solve it. I have a similar solution
working
I'm still trying to get my head around how to achieve a particular
outline view display by binding an NSTreeController to Core Data
entities.
I have some test apps running in which, by binding my tree controller
to a "root" entity, I can get a nice outline view showing a hierarchy
of ch
Hi Douglas,
Thanks for the suggestion - I was kind of hoping to hear a vote of
confidence for the bindings route.
From my experience, I would suggest that you go the route of using
NSTreeController along with NSTreeNode. This made life much easier
for my heterogeneous dataset. NSTreeNo
I have a project in which it would be helpful to create an
organizational view for components of a project very similar to the
"Groups & Files" view in Xcode. My application would organize pieces
of data from a number of experimental sessions, and perform pre-
configured sequences of proc
I pulled my hair out over this one, but I finally found an
acceptable workaround, although it doesn't solve the fundamental
problem of NSDictionaryController.
Thanks very much for the reply and workaround. I will explore this
solution further.
The NSDictionaryController/bindings route
I pulled my hair out over this one, but I finally found an
acceptable workaround, although it doesn't solve the fundamental
problem of NSDictionaryController.
Thanks very much for the reply and workaround. I will explore this
solution further.
The NSDictionaryController/bindings route
I'm using an NSDictionaryController object to control the data
provided to an NSTableView object. I'm attempting to use key-value
coding through the dictionary controller to manipulate the data in a
bindings-compatible way, by calling the method -arrangedObjects on
the NSDictionaryContro
Thanks again for that very detailed post - I know it sounds like I'm
being lazy, but there are other parts of the app that would have to be
redesigned to allow the possibility for code use under headless
conditions and it's really important to me to know why this is
necessary. What you
Thanks for the replies - just got them now as my MobileMe email went
offline for some reason last night...
I noticed that there is some useful info relating to this topic in
the
documentation on Agents and Daemons at
http://developer.apple.com/technotes/tn2005/tn2083.html#SECLIVINGDANGERO
I am trying to factor some frameworks so that code used in a
document-based Cocoa app can be shared with command-line tools that
might run on a headless node (no window server).
I've seen some discussion in the past on questions such as whether
NSImage and related classes can be used hea
Hi -
I am trying to factor some frameworks so that code used in a document-
based Cocoa app can be shared with command-line tools that might run
on a headless node (no window server).
I've seen some discussion in the past on questions such as whether
NSImage and related classes can be use
tablecolumns
that you want (add new ones). Then call
setAutosaveName:. Change the width of a column in your
GUI. This should save out the autosave values. Quit your app.
Restart it. Are the columns restored?
This pattern should work; I use it internally in the open and save
panel.
corbin
On Aug
n and save
panel.
corbin
On Aug 4, 2008, at 3:36 PM, Rick Hoge wrote:
Thanks for the suggestion -
I tried calling setAutosaveTableColumns: after adding a column from
code, but on next launch it only showed the columns that are
defined in the nib with IB.
Rick
On 4-Aug-08, at 5:39 PM, C
yourself. Before you call it, print out all
the table columns to see what they are. Then, load your
tablecolumns that you want (add new ones). Then call
setAutosaveName:. Change the width of a column in your
GUI. This should save out the autosave values. Quit your app.
Restart it. Are th
ary is
loaded and could have hundreds of possible pieces of information, of
which a user would typically select some small number).
So I'm stuck supporting at least part of the table structure
programatically.
Rick
corbin
On Aug 4, 2008, at 5:31 PM, Rick Hoge wrote:
ey are. Then, load your tablecolumns
that you want (add new ones). Then call
setAutosaveName:. Change the width of a column in your
GUI. This should save out the autosave values. Quit your app.
Restart it. Are the columns restored?
This pattern should work; I use it internally in the open a
ally in the open and save
panel.
corbin
On Aug 4, 2008, at 3:36 PM, Rick Hoge wrote:
Thanks for the suggestion -
I tried calling setAutosaveTableColumns: after adding a column from
code, but on next launch it only showed the columns that are
defined in the nib with IB.
Rick
On 4-Aug-08
) before calling
setAutosaveName:, or setAutosaveTableColumns:, then it should work
out okay; it will restore all of the widths, positions, etc.
corbin
On Aug 4, 2008, at 2:03 PM, Rick Hoge wrote:
I'm working on an application that will allow users to add columns
of descriptive informati
I'm working on an application that will allow users to add columns of
descriptive information to an NSTableView - the available columns are
determined at launch time by loading a dictionary.
In my test app, I can add columns to my table no problem. Now I am
trying to decide on a robust a
Thanks for the replies - seems like a custom view and possibly
NSMatrix will do the job.
Rick
On 18-Jul-08, at 12:38 PM, Chris Hanson wrote:
On Jul 18, 2008, at 8:39 AM, Rick Hoge wrote:
I expect this is a custom class created by Apple - does anyone know
of an efficient way to
I would like to include a view divider similar to the one used in
Xcode at the top of the editor window (contains forward and back
buttons, popups for selection of source file and function, as well as
pulldowns for a number of functions).
I expect this is a custom class created by Apple -
place to be a student!) The starting time frame is somewhat flexible.
For more information about our lab, and some related projects, visit
http://unfweb.criugm.qc.ca/rhoge/
http://www.neurolens.org/
or contact me offline at the email address used for this post.
Best,
Rick
As usual I'm sure it will turn out to be some silly small thing (and
not a mysterious alignment issue with CBLAS). The strange thing is
that the problem only arises when the matrices involved exceed a
certain size.
After further testing with simplified test cases, I think it actually
i
Thanks for the suggestions -
I had already scoured the 64-bit transition guide, and didn't think I
needed to use NSInteger and CGFloat since integers and floats appear
to be the same size for both 32 and 64 bit builds.
Just to be sure though, I tried replacing any int and float
declarati
I've been tesing a 64 bit build of an application that uses the BLAS
function cblas_sgemm to multiply two matrices. The code works fine in
32 bit builds (building with Xcode 3.0 on Leopard 10.5.3)
There is a strange problem that I think I have isolated to the output
of the above function
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