To find if a file is fragmented
Hi, I just need to know, if a file is fragmented or not. I don’t need the frags details etc. Its for showing extended info about the selected file, like whether it is fragmented or not. Is it possible with out raw reading the volume (for its catalog file)? I have also seen Carbon File Manager’s FSGetCatalogInfo() and fstat() and they don’t return this info. Any help would be greatly appreciated. Best, Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
progress indicator strange partial overlay
Hi, I have a blue background view and over it in the centre is a white background view (simple custom views). In the inner white custom view, even if I create the progress bar (determinate) via code or IB (Xcode 5), the later end of the bar is enclosed in some sort of bluish wrapper. The wrapper remains even when double value of bar enters it and bar progresses thru it. Attaching a 4k png image here. Please help. Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Fwd: progress indicator strange partial overlay
Hi, Here’s the image URL: http://i60.tinypic.com/209m6bd.jpg Best, Nick Begin forwarded message: From: Nick Rogers roger...@mac.com Subject: progress indicator strange partial overlay Date: 15 February 2014 10:41:08 pm IST To: Cocoa-dev List List cocoa-dev@lists.apple.com Hi, I have a blue background view and over it in the centre is a white background view (simple custom views). In the inner white custom view, even if I create the progress bar (determinate) via code or IB (Xcode 5), the later end of the bar is enclosed in some sort of bluish wrapper. The wrapper remains even when double value of bar enters it and bar progresses thru it. Attaching a 4k png image here. Please help. Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/roger_s1%40mac.com This email sent to roger...@mac.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Fwd: [SOLVED] progress indicator strange partial overlay
Hi, The about last 30% of the length of the progress bar was passed onto the drawRect: of the blue background custom view as dirtyRect. Wonder what causes it. Solved it by checking dirtyRect and then skipping drawing [NSRectFill(); etc]. Wishes, Nick Begin forwarded message: From: Nick Rogers roger...@mac.com Subject: Fwd: progress indicator strange partial overlay Date: 15 February 2014 10:46:52 pm IST To: Cocoa-dev List List cocoa-dev@lists.apple.com Hi, Here’s the image URL: http://i60.tinypic.com/209m6bd.jpg Best, Nick Begin forwarded message: From: Nick Rogers roger...@mac.com Subject: progress indicator strange partial overlay Date: 15 February 2014 10:41:08 pm IST To: Cocoa-dev List List cocoa-dev@lists.apple.com Hi, I have a blue background view and over it in the centre is a white background view (simple custom views). In the inner white custom view, even if I create the progress bar (determinate) via code or IB (Xcode 5), the later end of the bar is enclosed in some sort of bluish wrapper. The wrapper remains even when double value of bar enters it and bar progresses thru it. Attaching a 4k png image here. Please help. Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/roger_s1%40mac.com This email sent to roger...@mac.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: https://lists.apple.com/mailman/options/cocoa-dev/roger_s1%40mac.com This email sent to roger...@mac.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: [SOLVED] progress indicator strange partial overlay
Hi, I added -isOpaque to return YES to both the overlapping custom view and even sub-classed progress bar and set them to return -isOpaque as YES. Although the problem is not there when progressing, but at the end when a alert panel comes to from and progress bar returns to 0.0, the same patch is there although this time grey. So still relying on the dirtyRect checking way to solve this. Best, Nick On 16-Feb-2014, at 11:39 am, Graham Cox graham@bigpond.com wrote: On 16 Feb 2014, at 4:36 am, Nick Rogers roger...@mac.com wrote: The about last 30% of the length of the progress bar was passed onto the drawRect: of the blue background custom view as dirtyRect. Wonder what causes it. Probably because neither the progress view or your other view returns YES from -isOpaque, therefore when the progress invalidates its dirty rect is also passed to the views behind it. Not sure why it's just that end portion though, I would have expected the dirty rect to at least include the end of the filled progress bar. --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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
To find if a binary is being used/running
Hi, I need to know if a binary is executing or not. I just have the path to the binary e.g. /Applications/MyApp.app/Contents/MacOS/MyApp There's NSRunningApplication method runningApplicationsWithBundleIdentifier: , but I have other binaries which are embedded in this app which don't have a bundle id. And I want to know if they are running or not. Cocoa doesn't seem have any such specific API for this purpose. NSFileHandle provides a valid handle (for writing) even if the binary is executing. Is there any method like open() or something which would fail if binary is executing. Tried open() with flags O_EXLOCK but no luck yet. Is this even possible? Best, Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
quitting app running in status bar logs this message about some modal session
Hi, My app runs in status bar from where I can bring about its window and quit from the menu as well. The following msg is logged in Xcode console (when doing [NSApp terminate:self],): [25025:303] *** Assertion failure in -[NSApplication _commonBeginModalSessionForWindow:relativeToWindow:modalDelegate:didEndSelector:contextInfo:], /SourceCache/AppKit/AppKit-1187.39/AppKit.subproj/NSApplication.m:3919 [25025:303] Modal session cannot be run during application termination I am not running any modal session at the time, nor the window is brought forward, still this error. Please help. Wishes, Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Fwd: [SOLVED] custom field editor, no focus ring, no select all
Hi, Now I'm using a NSTextField instead of NSTexView. Best, Nick Begin forwarded message: From: Nick Rogers roger...@mac.com Subject: custom field editor, no focus ring, no select all Date: 30 August 2013 8:23:12 PM IST To: Cocoa-dev List List cocoa-dev@lists.apple.com Hi, I am using a custom field editor for a custom table view cell. When ever I click on the name field the editor comes into view, but focus ring is not there and select all doesn't work when using keyboard or mouse or programmatically. I want the focus ring to be drawn and want to select all of the previous text so that the user can simply start typing a new name. Here's the code snippet from the method doubleClickInTableView: NSTextView *boxText = [[NSTextView alloc] initWithFrame:editRect]; NSTextContainer *textContainer = [boxText textContainer]; // Set up container [textContainer setContainerSize:NSMakeSize(editRect.size.width, NSHeight([boxText frame]))]; [textContainer setWidthTracksTextView:NO]; [textContainer setHeightTracksTextView:NO]; // Set up size attributes [boxText setHorizontallyResizable:YES]; [boxText setVerticallyResizable:NO]; [boxText setTextContainerInset:NSMakeSize(0, 2)]; // Set up editing attributes [boxText setSelectable:YES]; [boxText setEditable:YES]; [boxText setFocusRingType:NSFocusRingTypeDefault]; // Set up rich text attributes [boxText setRichText:NO]; [boxText setImportsGraphics:NO]; [boxText setUsesFontPanel:NO]; [boxText setUsesRuler:NO]; // Set up colors [boxText setDrawsBackground:YES]; [boxText setBackgroundColor:[NSColor textBackgroundColor]]; [boxText setTextColor:[NSColor controlTextColor]]; [boxText setSelectedTextAttributes:aTitleAttributes]; // And most importantly... [boxText setFieldEditor:YES]; [boxText setDelegate:self]; [sender addSubview:boxText]; [boxText display]; [boxText release]; [boxText setString:stringDisplayed]; [boxText sizeToFit]; [self.window makeFirstResponder:boxText]; [boxText drawFocusRingMask]; [boxText selectAll:self]; I have tried making boxText an ivar and allocating it in awakeFromNib, but still the same result. Please help. Thanks, Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/roger_s1%40mac.com This email sent to roger...@mac.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
custom field editor, no focus ring, no select all
Hi, I am using a custom field editor for a custom table view cell. When ever I click on the name field the editor comes into view, but focus ring is not there and select all doesn't work when using keyboard or mouse or programmatically. I want the focus ring to be drawn and want to select all of the previous text so that the user can simply start typing a new name. Here's the code snippet from the method doubleClickInTableView: NSTextView *boxText = [[NSTextView alloc] initWithFrame:editRect]; NSTextContainer *textContainer = [boxText textContainer]; // Set up container [textContainer setContainerSize:NSMakeSize(editRect.size.width, NSHeight([boxText frame]))]; [textContainer setWidthTracksTextView:NO]; [textContainer setHeightTracksTextView:NO]; // Set up size attributes [boxText setHorizontallyResizable:YES]; [boxText setVerticallyResizable:NO]; [boxText setTextContainerInset:NSMakeSize(0, 2)]; // Set up editing attributes [boxText setSelectable:YES]; [boxText setEditable:YES]; [boxText setFocusRingType:NSFocusRingTypeDefault]; // Set up rich text attributes [boxText setRichText:NO]; [boxText setImportsGraphics:NO]; [boxText setUsesFontPanel:NO]; [boxText setUsesRuler:NO]; // Set up colors [boxText setDrawsBackground:YES]; [boxText setBackgroundColor:[NSColor textBackgroundColor]]; [boxText setTextColor:[NSColor controlTextColor]]; [boxText setSelectedTextAttributes:aTitleAttributes]; // And most importantly... [boxText setFieldEditor:YES]; [boxText setDelegate:self]; [sender addSubview:boxText]; [boxText display]; [boxText release]; [boxText setString:stringDisplayed]; [boxText sizeToFit]; [self.window makeFirstResponder:boxText]; [boxText drawFocusRingMask]; [boxText selectAll:self]; I have tried making boxText an ivar and allocating it in awakeFromNib, but still the same result. Please help. Thanks, Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
editing text part in a custom NSTextFieldCell (of a NSTableView)
Hi,
I have a NSTableView and I'm setting a particular column to have a custom
NSTextFieldCell subclass object as its cell.
For this I'm doing in awakeFromNib:
TableViewListCell *aTableViewListCell3 = [[[TableViewListCell alloc] init]
autorelease];
[[tableViewPresetsMainList tableColumnWithIdentifier:COLUMN_ID_DESC]
setDataCell:aTableViewListCell3];
[[[tableViewPresetsMainList tableColumnWithIdentifier:COLUMN_ID_DESC]
dataCell] setEditable:YES];
The object value returned for this cell in method, - (id)tableView:(NSTableView
*)aTableView objectValueForTableColumn:(NSTableColumn *)aTableColumn
row:(NSInteger)rowIndex, is a NSMutableDictionary containing the text to
display in the cell as well an NSImage object to display in the cell.
Then in NSTextFieldCell subclass TableViewListCell, in method, -
(void)drawInteriorWithFrame:(NSRect)theCellFrame inView:(NSView
*)theControlView, I'm drawing the image (32x32 pixels) and then text to the
right side of image, after obtaining these image and text from the cell's
objectValue, which is the NSMutableDictionary.
Now the problem is that when I click on the cell for editing the text
displayed, the field that pops up shows the value same as description of the
mutable dictionary.
e.g.
{
Description = Preset #0;
Icon = NSImage 0x1001a3ab0 Name=Presets Size={32, 32} Reps=(\n
\NSBitmapImageRep 0x1001f75e0 Size={32, 32} ColorSpace=Device RGB colorspace
BPS=8 BPP=32 Pixels=32x32 Alpha=YES Planar=NO Format=2
CurrentBacking=CGImageRef: 0x1001f76f0 CGImageSource=0x1005a48e0\\n);
}
Whereas I want to show and edit only the drawn name Preset #0,.
Also I want to set the editing field's rect to a smaller one, which I guess I
can do by over-riding the method, - (void)editWithFrame:(NSRect)aRect
inView:(NSView*)controlView editor:(NSText*)textObj delegate:(id)anObject
event:(NSEvent*)theEvent
Any suggestions?
Wishes,
Nick
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Thread safety, some basic questions about accessing mutable objects across threads
Hi, Please look at the following situations: 1. Created a mutable array in main thread, can I read its values in a secondary thread safely, while no other thread is modifying this mutable array? 2. I need to add objects to this mutable array from a secondary thread, and no other thread is modifying it. Can I simply add an object like, [array addObject:obj]; or if this is wrong how to achieve the same? The object to add is mostly NSString or NSNumber or a mutable dictionary of NSString and NSNumber. Please help. Best, Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
drawing outside the dirtyRect (of a NSView sub class) and overlapping NSTableView
Hi, I have a column of buttons stacked up one over the other and on clicking a button I want to draw an image on it with an arrow protruding to the right. And on the right side there is a tab view and in it there is a table view. So the arrow part of the image must overlap the tab view and table view and the table view is required to have normal behaviour even after this. Is this even possible? Thanks, Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
how to draw a elliptical pie chart?
Hi, I'm new to core graphics. The target oval (target oval.jpg) and current oval (oval.jpg) are available at http://www5.snapfish.in/snapfishin/thumbnailshare/AlbumID=9188624025/a=11429776025_11429776025/otsc=SHR/otsi=SALBlink/ . In oval after drawing the top filled ellipse I'm creating a path that moves from a point on the ellipse to its centre and then back to another point on the ellipse thus forming a slice. The problem is how to fill this elliptical slice with a different colour. Please help. Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Fwd: how to draw a elliptical pie chart?
Sorry earlier link to images required signup. Here are the new links: http://picturepush.com/public/13243485 and http://picturepush.com/public/13243495 Wishes, Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: way to update Apple Menu's Recents Items
Hi, But a commercially available program is doing it. And I have gone through process list in activity monitor before and after Recent Items is updated by this program. And found no difference in number of processes or any change in PIDs of the processes. Means probably no re-spawning. I have to do this. Please suggest. Wishes, Nick On 14-May-2013, at 9:30 AM, Kyle Sluder k...@ksluder.com wrote: On Mon, May 13, 2013, at 08:50 PM, Nick Rogers wrote: Hi, I can remove the recent items from the plist where they are stored. But when I try and update the Recent Items submenu, it doesn't. I'm getting Apple Menu by using [[NSApp mainMenu] itemAtIndex:0]. OR do I need to kill some process (which will then restart) to achieve this. Recent Items are managed by Powerbox, and the number of included items is set by the user in System Preferences. You should not attempt to modify this submenu. --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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
way to update Apple Menu's Recents Items
Hi, I can remove the recent items from the plist where they are stored. But when I try and update the Recent Items submenu, it doesn't. I'm getting Apple Menu by using [[NSApp mainMenu] itemAtIndex:0]. OR do I need to kill some process (which will then restart) to achieve this. Thanks, Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: delaying forced sleep after initial 30 seconds delay
Hi, Thanks for all the inputs. The app doesn't run any scheduled operations. So the situation would occur only when the user wants it to. Best, Nick On 03-May-2013, at 10:26 AM, Kyle Sluder k...@ksluder.com wrote: On Thu, May 2, 2013, at 09:16 PM, Nick Rogers wrote: Hi, I want my app to delay forced sleep even after requesting the initial delay of 30 seconds. Forced sleep exists for cases in which keeping the machine awake can cause hardware failure. I have seen my macbook pro sometime taking more than 2 minutes to go into sleep, after closing the lid. So is this possible at all? This shouldn't happen. It's a bad thing when it does. So the system is designed to prevent you from causing it to happen. Please don't try to give your users a Ruin My Hardware checkbox. --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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
delaying forced sleep after initial 30 seconds delay
Hi, I want my app to delay forced sleep even after requesting the initial delay of 30 seconds. This have to be specifically set by the user in the Preferences of the app and only when the user clicks a button to run some operation, for the duration of that operation which could extent to a minute or two. I know it would be against the mac os x design principles, but I think in the end it has to be the user's wish. I have seen my macbook pro sometime taking more than 2 minutes to go into sleep, after closing the lid. So is this possible at all? The scenario is that user has set the preference to delay forced sleep and then he clicks the button on the app and then closes the laptop lid, knowing fully well that it may delay sleep for a few minutes. Wishes, Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
multiple profiles in preferences mechanism
Hi, I wish to use NSUserDefaultsController to ease up on writing glue code as well as for its features. But the problem is I need to have profiles (or rather Presets) for preferences. Each preset would have the same set of preferences. I am thinking of a table view on left where presets could be added/removed and on right there would be UI controls for preferences (basically all are check boxes). Is it possible to save the same set of preferences with different profiles in the system provided mechanism or do I have to come up with a scheme of my own (I guess I'd then be storing preferences in a plist in app bundle)? Best, Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: multiple profiles in preferences mechanism
Thanks for the valuable input.
Thanks,
Nick
On 13-Apr-2013, at 9:26 PM, Jerry Krinock je...@ieee.org wrote:
On 2013 Apr 13, at 07:39, Nick Rogers roger...@mac.com wrote:
Is it possible to save the same set of preferences with different profiles
in the system provided mechanism or do I have to come up with a scheme of my
own (I guess I'd then be storing preferences in a plist in app bundle)?
I don't think that NSUserDefaults has that mechanism.
Using a scheme of my own is how the Google Chrome web browser supports
multiple user profiles. Preferences are in Application Support. Each
profile gets a subfolder in ~/Library/Application Support/Google/Chrome/,
which contains, among many other things, a JSON Preferences file.
I'd also consider layering my profiles into NSUserDefaults somehow. To do
this, you'll need to do lots of digging into and out of dictionaries with key
paths such as foo.profileName.bar. I've added a category to NSUserDefaults
which creates and removes the required subdictionaries automatically, and
also understands key path arrays such as {foo, profileName, bar}. If
you're interested,
https://github.com/jerrykrinock/CategoriesObjC/blob/master/NSUserDefaults%2BKeyPaths.h
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Re: Hover button and tracking area questions
Hi, The code that I pasted was going thru change. In the original copy, I was removing tracking area before adding the new. So now my thinking goes that I shouldn't have added tracking areas after the initial one, at least I am now doing that and hoping it not to crash. The exception was: Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: 0x000d, 0x Any ideas? Thanks, Nick On 24-Jan-2013, at 2:18 PM, Kyle Sluder k...@ksluder.com wrote: On Jan 24, 2013, at 12:30 AM, Kyle Sluder k...@ksluder.com wrote: But considering that the API is intended to be used to create and install tracking areas on objects that are potentially different from their owner, it seems sensible that -addTrackingArea: might not retain the tracking area. I did some snooping, and it's apparently stuffing the tracking areas into a standard NSArray. In fact, I believe it's the same array we see being copied in Nick's stack trace. So there goes that theory. --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: https://lists.apple.com/mailman/options/cocoa-dev/roger_s1%40mac.com This email sent to roger...@mac.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Hover button and tracking area questions
Hi,
Thanks for the reply.
The code for HoverButton class is almost same as I posted in the first email
with the exception that in the following method I was removing trackingArea
before releasing it.
- (void)updateTrackingAreas
{
if (trackingArea) {
[self removeTrackingArea:trackingArea];// its there in the code that I
have
[trackingArea release];
trackingArea = nil;
}
[self ensureTrackingArea];
[self addTrackingArea:trackingArea];
[super updateTrackingAreas];
}
mouseEntered: and mouseExited: and other methods do not touch the trackingArea
at all.
This puzzled me and so I asked whether the tab view showing these button
changing tab item to another and thus making these buttons invisible would have
any repercussions. Or calling [super updateTrackingAreas]; at the beginning or
end of the method updateTrackingAreas would make any difference.
Another was any ill effect of removing and adding tracking area, which I am not
doing now as the button is not resizable.
Thanks,
Nick
On 24-Jan-2013, at 7:24 PM, Markus Spoettl ms_li...@shiftoption.com wrote:
On 1/24/13 12:06 PM, Nick Rogers wrote:
The code that I pasted was going thru change. In the original copy, I was
removing tracking area before adding the new.
So now my thinking goes that I shouldn't have added tracking areas after the
initial one, at least I am now doing that and hoping it not to crash.
I'm doing this (dynamically removing and adding tracking areas) all the time,
and while it does have drawbacks that Kyle explained, it works just fine. If
your memory management is OK, this will work. The fact that you're crashing
indicates that you're over-releasing your tracking area (or something else
is). Post your real code, we may spot something.
Regards
Markus
--
__
Markus Spoettl
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can update the UI from sheetDidEnd:…. ?
Hi, I was updating a few textfields from my sheetDidEnd:…. method. Just wondering if that was causing the crash (UI related error in main thread). Thanks, Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: can update the UI from sheetDidEnd:…. ?
Hi, Thanks for the replies. Sorry I didn't provide enough info in the beginning. Here it is. On 24-Jan-2013, at 9:55 AM, Graham Cox graham@bigpond.com wrote: On 24/01/2013, at 1:30 PM, Nick Rogers roger...@mac.com wrote: Hi, I was updating a few textfields from my sheetDidEnd:…. method. Just wondering if that was causing the crash (UI related error in main thread). If written correctly, the sheetDidEnd method is free to access stuff still in the sheet. In fact, it often has to to ensure any last minute entries in fields are committed - I usually start my sheetDidEnd methods with [sheet makeFirstResponder:sheet] to force a focused text field to push its content to its action method. sheetDidEnd methods also often call their delegates, and the delegate must be able to assume it can access anything (public) in the sheet. So whatever your problem is, it's not that. Show your code. The text fields to update are on the main window. On 24-Jan-2013, at 9:03 AM, Andy Lee ag...@mac.com wrote: On Jan 23, 2013, at 9:30 PM, Nick Rogers roger...@mac.com wrote: I was updating a few textfields from my sheetDidEnd:…. method. Just wondering if that was causing the crash (UI related error in main thread). What happens if you *don't* update the text fields in your sheetDidEnd method? Does it still crash? The crash doesn't happen always, so no way to tell if not updating the text fields from sheetDidEnd:.. has taken care of it. Can you show us the code for the sheetDidEnd method just in case there's a clue there? The code is simple. just updating the text fields on the main window, using setStringValue:@some string. Now I am doing this using performSelectorOnMainThread:. Are you passing a contextInfo pointer to the sheetDidEnd message? If it's an object reference, maybe you need to retain it (and then autorelease it in sheetDidEnd), assuming you're not using ARC. No context info. its NULL. Are you using ARC? The code is not ARC or GC. Are you remembering to call orderOut: as mentioned in the Sheet Programming Guide (unlikely to cause a crash, but worth checking)? I am calling orderOut:self but not from sheetDidEnd:… but from other method which ends the sheet. method is like: [NSApp endSheet:sheetWindow]; [sheetWindow orderOut:self]; Is it okay to do so as between these two statements the sheetDidEnd:… will execute? So, will the execution of second statement happen only after sheet ends. https://developer.apple.com/library/mac/#documentation/cocoa/conceptual/sheets/Tasks/UsingCustomSheets.html#//apple_ref/doc/uid/20001290-BABFIBIA Are the text fields in question *on* the sheet? If so, maybe you're trying to modify them after they've been dealloc'ed due to the sheet being dismissed. The text fields are on the main window. Does the stack trace show any of your code, or is it all Apple stuff? The stack trace shows internal UI problem. selector is retain. Now I am not sure if the sheet is problem, it could be something else too. But knowing the answer will help rule out the sheet part of the code. Are there any meaningful error messages being logged? The crash actually show _updateTrackingAreas being called repeatedly and the crash happened just after sheet ends so I just wanted to know the best practices regarding sheet. I am going to post another one with crash report and details of hover button where I am using updateTrackingAreas. The crash happened many seconds after the last hover button was pushed. And after a sheet ended, so started this thread to make sheets clear. Are you actually crashing or just throwing an exception? What if you add a breakpoint exception? Crash happened only once and is not reproducible. Wishes, Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: can update the UI from sheetDidEnd:…. ?
Hi, Sorry if I caused any confusion. But I don't know if _updateTrackingAreas would or would not be called by the system for its own UI display mechanism even if I don't use it in code. Best, Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Hover button and tracking area questions
Hi,
I have just a tab view on my main window and I switch tabs based on user input.
First tab has three hover buttons and on clicking one of them, it takes to
another tab which two hover buttons.
After clicking one of the two hover buttons, I switch tab and show a table view
and then show and end a sheet.
On clicking another button there I bring another sheet with radio buttons and
on clicking a radio button, it just crashed, many seconds after the last hover
button was clicked.
The crash report says something about _updateTrackingAreas, so I have detailed
about the situation above.
Part of code is reproduced below.
@interface HoverButton : NSButton
{
NSTrackingArea *trackingArea;
BOOL hovering;
}
// Implementation
- (void)ensureTrackingArea
{
if (trackingArea == nil) {
trackingArea = [[NSTrackingArea alloc] initWithRect:[self bounds]
options:
(NSTrackingMouseEnteredAndExited | NSTrackingActiveInKeyWindow |
NSTrackingInVisibleRect)
owner:self userInfo:nil];
}
}
- (void)updateTrackingAreas
{
if (trackingArea) {
[trackingArea release];
trackingArea = nil;
}
[self ensureTrackingArea];
[self addTrackingArea:trackingArea];
[super updateTrackingAreas];
}
- (void)mouseExited:(NSEvent *)theEvent
{
// shows one image over the button
}
- (void)mouseEntered:(NSEvent *)theEvent
{
// shows another image over the button
}
Part of the crash report stack trace:
Application Specific Information:
objc_msgSend() selector name: retain
objc[347]: garbage collection is OFF
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libobjc.A.dylib 0x7fff97c31350
objc_msgSend_vtable13 + 16
1 com.apple.CoreFoundation0x7fff96525b87 +[__NSArrayI
__new::] + 167
2 com.apple.CoreFoundation0x7fff96525a75
-[__NSPlaceholderArray initWithObjects:count:] + 245
3 com.apple.CoreFoundation0x7fff965287c0 -[NSArray
initWithArray:range:copyItems:] + 816
4 com.apple.CoreFoundation0x7fff96528482 -[NSArray
initWithArray:copyItems:] + 66
5 com.apple.CoreFoundation0x7fff9654caf6 -[__NSArrayM
copyWithZone:] + 54
6 com.apple.CoreFoundation0x7fff96524d54 -[NSObject
copy] + 20
7 com.apple.AppKit0x7fff942a7ad2
-[NSView(NSInternal) _updateTrackingAreas] + 1295
8 com.apple.CoreFoundation0x7fff96574cee
__NSArrayEnumerate + 718
9 com.apple.AppKit0x7fff942a7aeb
-[NSView(NSInternal) _updateTrackingAreas] + 1320
10 com.apple.CoreFoundation0x7fff96574cee
__NSArrayEnumerate + 718
11 com.apple.AppKit0x7fff942a7aeb
-[NSView(NSInternal) _updateTrackingAreas] + 1320
12 com.apple.CoreFoundation0x7fff96574cee
__NSArrayEnumerate + 718
13 com.apple.AppKit0x7fff942a7aeb
-[NSView(NSInternal) _updateTrackingAreas] + 1320
14 com.apple.CoreFoundation0x7fff96574cee
__NSArrayEnumerate + 718
15 com.apple.AppKit0x7fff942a7aeb
-[NSView(NSInternal) _updateTrackingAreas] + 1320
16 com.apple.CoreFoundation0x7fff96574cee
__NSArrayEnumerate + 718
17 com.apple.AppKit0x7fff942a7aeb
-[NSView(NSInternal) _updateTrackingAreas] + 1320
18 com.apple.CoreFoundation0x7fff96574cee
__NSArrayEnumerate + 718
19 com.apple.AppKit0x7fff942a7aeb
-[NSView(NSInternal) _updateTrackingAreas] + 1320
20 com.apple.CoreFoundation0x7fff96574cee
__NSArrayEnumerate + 718
21 com.apple.AppKit0x7fff942a7aeb
-[NSView(NSInternal) _updateTrackingAreas] + 1320
22 com.apple.AppKit0x7fff942a7444 __-[NSWindow
_postInvalidCursorRects]_block_invoke_1 + 1107
23 com.apple.CoreFoundation0x7fff9653c8e7
__CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
24 com.apple.CoreFoundation0x7fff9653c846
__CFRunLoopDoObservers + 374
25 com.apple.CoreFoundation0x7fff96511af9 __CFRunLoopRun
+ 825
26 com.apple.CoreFoundation0x7fff96511486
CFRunLoopRunSpecific + 230
27 com.apple.HIToolbox 0x7fff959702bf
RunCurrentEventLoopInMode + 277
28 com.apple.HIToolbox 0x7fff959774bf
ReceiveNextEventCommon + 181
29 com.apple.HIToolbox 0x7fff959773fa
BlockUntilNextEventMatchingListInMode + 62
30 com.apple.AppKit0x7fff941e1779 _DPSNextEvent +
659
31 com.apple.AppKit0x7fff941e107d
Re: how to make a task less cpu intensive
Hi, Thanks for all the input. The problem solved when I did this: [progressIndicator setUsesThreadedAnimation:YES]; in the awakeFromNib method. With out this the progress bar doesn't animate no matter if the sheet is in the main thread or secondary or no heavy computations. I can't have any rough estimates on how much memory i'd need to malloc, some times it can be less than 1 MB and grow to 1GB. Also the tree is incremental, so can not predict its final size. Thanks again, Nick On 29-Dec-2012, at 12:53 AM, Scott Ribe scott_r...@elevated-dev.com wrote: On Dec 28, 2012, at 10:40 AM, Nick Rogers wrote: I have a tree in memory (all nodes malloc'ed blocks) and when I start freeing this large tree, I traverse the tree and free all nodes. Are you really only free'ing the malloc'd pointers? Or are you calling some higher-level tree maintenance function which does additional work? Example: calling some node-delete() function which re-balances the tree... -- 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
how to make a task less cpu intensive
Hi, I have a tree in memory (all nodes malloc'ed blocks) and when I start freeing this large tree, I traverse the tree and free all nodes. This becomes cpu intensive and so the progress bar on my sheet doesn't animate. In similar other situations the progress bar animates, when different code is executed in the background. Any ideas on how to make tree freeing process less intensive? Thanks, Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
sheet is divided horizontally in two shades
Hi, The example sheet's grab is attached here. In this one the sheet seems divided in half, but in smaller sheets with less height, the lighter shaded bottom portion is smaller. Occurs in Mac OS X Lion and Mountain Lion. On Leopard and Snow Leopard it doesn't occur. The beginSheet: modalForWindow: …… …… method is called from the main thread. Any ideas would really help. Thanks, Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: sheet is divided horizontally in two shades
Hi, The image is at following link (in the album): http://www5.snapfish.com/snapfish/thumbnailshare/AlbumID=7802925026/a=13244939026_13244939026/otsc=SHR/otsi=SALBlink/COBRAND_NAME=snapfish/ And the app has GC required. Wishes, Nick On 12-Dec-2012, at 12:24 AM, Jeff Johnson publicpost...@lapcatsoftware.com wrote: On Dec 11, 2012, at 11:30 AM, Nick Rogers wrote: Hi, The example sheet's grab is attached here. In this one the sheet seems divided in half, but in smaller sheets with less height, the lighter shaded bottom portion is smaller. Occurs in Mac OS X Lion and Mountain Lion. On Leopard and Snow Leopard it doesn't occur. The beginSheet: modalForWindow: …… …… method is called from the main thread. Any ideas would really help. Thanks, Nick Hi Nick. I think I know what your issue is. However, your message didn't have an attachment. Perhaps the mailing lists don't allow attachments. Could you post the screenshot someone on the web? -Jeff ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: sheet is divided horizontally in two shades
oops! that requires a sign up here's the direct link: http://s13.postimage.org/ci00lrbsn/divided_sheet.jpg Best, Nick On 12-Dec-2012, at 2:20 AM, Nick Rogers roger...@mac.com wrote: Hi, The image is at following link (in the album): http://www5.snapfish.com/snapfish/thumbnailshare/AlbumID=7802925026/a=13244939026_13244939026/otsc=SHR/otsi=SALBlink/COBRAND_NAME=snapfish/ And the app has GC required. Wishes, Nick On 12-Dec-2012, at 12:24 AM, Jeff Johnson publicpost...@lapcatsoftware.com wrote: On Dec 11, 2012, at 11:30 AM, Nick Rogers wrote: Hi, The example sheet's grab is attached here. In this one the sheet seems divided in half, but in smaller sheets with less height, the lighter shaded bottom portion is smaller. Occurs in Mac OS X Lion and Mountain Lion. On Leopard and Snow Leopard it doesn't occur. The beginSheet: modalForWindow: …… …… method is called from the main thread. Any ideas would really help. Thanks, Nick Hi Nick. I think I know what your issue is. However, your message didn't have an attachment. Perhaps the mailing lists don't allow attachments. Could you post the screenshot someone on the web? -Jeff ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: sheet is divided horizontally in two shades
Thanks for the valuable info. Thanks, Nick On 12-Dec-2012, at 2:39 AM, Jeff Johnson publicpost...@lapcatsoftware.com wrote: rdar://problem/11656928 Discolored stripe drawn at bottom of textured non-resizable windows Duplicate of rdar://problem/11716883 It turns out that this only affects windows with content border autosize. If you set the window content border to none, that should fix the problem. -Jeff On Dec 11, 2012, at 2:54 PM, Nick Rogers wrote: oops! that requires a sign up here's the direct link: http://s13.postimage.org/ci00lrbsn/divided_sheet.jpg Best, Nick On 12-Dec-2012, at 2:20 AM, Nick Rogers roger...@mac.com wrote: Hi, The image is at following link (in the album): http://www5.snapfish.com/snapfish/thumbnailshare/AlbumID=7802925026/a=13244939026_13244939026/otsc=SHR/otsi=SALBlink/COBRAND_NAME=snapfish/ And the app has GC required. Wishes, Nick On 12-Dec-2012, at 12:24 AM, Jeff Johnson publicpost...@lapcatsoftware.com wrote: On Dec 11, 2012, at 11:30 AM, Nick Rogers wrote: Hi, The example sheet's grab is attached here. In this one the sheet seems divided in half, but in smaller sheets with less height, the lighter shaded bottom portion is smaller. Occurs in Mac OS X Lion and Mountain Lion. On Leopard and Snow Leopard it doesn't occur. The beginSheet: modalForWindow: …… …… method is called from the main thread. Any ideas would really help. Thanks, Nick Hi Nick. I think I know what your issue is. However, your message didn't have an attachment. Perhaps the mailing lists don't allow attachments. Could you post the screenshot someone on the web? -Jeff ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: a way to clear inactive RAM
Hi, Thanks for the replies. I was trying to achieve what essentially free memory apps on the Mac AppStore do. The RAM usage can be divided into four parts as shown in Activity Monitor. 1. Free 2. In-active 3. Active 4. Wired When I used my earlier app to allocate memory equal to free + inactive bytes, for the execution of the program it used to make the system less responsive for a few seconds and on release and quitting the app, most of the inactive memory would shift under free. e.g. if free is 1GB and inactive is 1.5GB, then after run, free would be 2.45GB and inactive just 50MB. Thanks again, Nick On 06-Nov-2012, at 2:29 AM, Alex Zavatone z...@mac.com wrote: Not sure what RAM clearing means but if you want to purge the disk cache, check out man purge in the terminal. On Nov 5, 2012, at 1:54 PM, Nick Rogers wrote: Hi, I am assigned this small utility which should clear inactive RAM. I know Mac OS X manages memory quite efficiently and inactive RAM also has a purpose. But I have to make this. Prior to Mountain Lion I was allocating memory in my app that was roughly equivalent to free + inactive RAM. And it used to work perfectly, i.e. most inactive RAM used to become free. But in Mountain Lion, aggressive allocations are not affecting RAM at all. I want this util to also work on systems that don't have Xcode installed. I saw the post where someone posted notes of purge disassembly. But that isn't leading anywhere. Also purge comes with Xcode only. There are apps on Mac App Store that do this kind of thing. How to go about it? Any pointers would be really appreciated. Wishes, Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/zav%40mac.com This email sent to z...@mac.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
a way to clear inactive RAM
Hi, I am assigned this small utility which should clear inactive RAM. I know Mac OS X manages memory quite efficiently and inactive RAM also has a purpose. But I have to make this. Prior to Mountain Lion I was allocating memory in my app that was roughly equivalent to free + inactive RAM. And it used to work perfectly, i.e. most inactive RAM used to become free. But in Mountain Lion, aggressive allocations are not affecting RAM at all. I want this util to also work on systems that don't have Xcode installed. I saw the post where someone posted notes of purge disassembly. But that isn't leading anywhere. Also purge comes with Xcode only. There are apps on Mac App Store that do this kind of thing. How to go about it? Any pointers would be really appreciated. Wishes, Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
to highlight a outline view row on mouse over
Hi, I wish to highlight a row on mouse over by changing the background color to light blue. And back to regular when mouse moves away from the row. Have seen a few examples of it on the internet. But is there any efficient way to do this? Any help would be greatly appreciated... Thanks, Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
vm keeps increasing when in a rigorous loop
Hi,
The code is like:
- (void)myMethod
{
.
while (flag) {
UInt32 temp;
. and lot of other ints etc.
if (someCondition == 1) {
UInt8 *buff = (UInt8*)calloc(1, sizeof(aStruct));
if (someOtherCondition == 1) {
[self addPointerToATree:buff];
}
else
free(buff);
}
}
}
The while loop runs very rigorously without having much delay in it.
Memory for buff is only needed when certain condition is met.
I have seen that even when this condition is not met and no memory is
allocated, the VM keeps growing steadily as seen in Activity Monitor.
So the only thing contributing to it would be the various ints etc.
But the app is GC enabled (required), so the VM size should reset to some level
every few seconds, but doesn't.
The loop does many thousands of iterations per second.
Any idea on how to limit this usage?
Shall help.
I have a auto release pool drained at the end of every iteration in a loop in
some other method but that doesn't seem to have much effect.
Wishes,
Nick
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GC and malloc question
Hi, My program has to build a tree structure, the number of nodes, in which can run into many millions. So I began to make changes to allocate a node using malloc. Earlier I was using a object for a node. I have GC enabled (required). And basically I'm making a linked list of nodes to store children nodes. The root node pointer is a member of a class and children nodes pointer are stored in root node. Immediately after malloc'ing a node I'm using Garbage Collector method - disableCollectorForPointer, just to make sure, although GC is supposed to work only on objects, if I'm right. My question is: will GC affect the node allocations in anyway and, also (GC or No GC) will the tree starting from a root node able to stay in memory until I free it. Because I'm getting EXC_BAD_ACCESS/KERN_PROTECTION_FAILURE, one after the other. Will using - disableCollectorForPointer have any effect on this. Best, Nick ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Save panel showing as a blank sheet
Hi, I'm running a NSSavePanel as sheet, but on some systems the sheet is totally blank and having odd dimensions like twice the normal height. code is: NSSavePanel *panel = [NSSavePanel savePanel]; [panel setRequiredFileType:@rrs]; [panel setExtensionHidden:YES]; [panel setCanCreateDirectories:YES]; [NSDateFormatter setDefaultFormatterBehavior:NSDateFormatterBehavior10_4]; NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; [dateFormatter setDateFormat:@ dd, , h_mm_ss a]; NSString *suggestedFileName = [NSString stringWithFormat:@session file %@, [dateFormatter stringFromDate:[NSDate date]]]; [panel beginSheetForDirectory:nil file:suggestedFileName modalForWindow:window modalDelegate:self didEndSelector:@selector(savePanelDidEnd:returnCode:contextInfo:) contextInfo:NULL]; I also saw something related to errors in mounting of a volume in system log. Could it be the reason? Any thoughts? Wishes, Nick Sent from iCloud ___ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Save panel showing as a blank sheet
Thanks for the interest. Yes, the panel is run from the main thread. The problem has occurred only thrice on different user's machines in a span of 2 years. In one case I was able to get system log and it showed some problem with getting a mounted volume's attributes. The log also indicated an error in loading some framework. Was long ago, and I haven't kept the details. I'm just guessing that it may have to do something with the elements that needs to be shown in a panel, like Devices, Volumes etc. Also does something, like a broken framework problem on a mac, could exist? Thanks, Nick Sent from iCloud On Apr 27, 2012, at 09:22 PM, Nick Zitzmann n...@chronosnet.com wrote: On Apr 27, 2012, at 2:34 AM, Nick Rogers wrote: Hi, I'm running a NSSavePanel as sheet, but on some systems the sheet is totally blank and having odd dimensions like twice the normal height. code is: NSSavePanel *panel = [NSSavePanel savePanel]; [panel setRequiredFileType:@rrs]; [panel setExtensionHidden:YES]; [panel setCanCreateDirectories:YES]; [NSDateFormatter setDefaultFormatterBehavior:NSDateFormatterBehavior10_4]; NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; [dateFormatter setDateFormat:@ dd, , h_mm_ss a]; NSString *suggestedFileName = [NSString stringWithFormat:@session file %@, [dateFormatter stringFromDate:[NSDate date]]]; [panel beginSheetForDirectory:nil file:suggestedFileName modalForWindow:window modalDelegate:self didEndSelector:@selector(savePanelDidEnd:returnCode:contextInfo:) contextInfo:NULL]; I also saw something related to errors in mounting of a volume in system log. Could it be the reason? Any thoughts? Just checking: You are running the save panel from the main thread, right? And you're sure of that, right? Nick Zitzmann http://www.chronosnet.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: table view and custom cell optimization problem
Hi,
Thanks for the reply.
But the problem is that I don't have anything common in the rows.
The image (128x128) are different, the four lines of text are different and the
lines I draw are different in each cell.
Any Ideas?
Regards,
Nick
On 03-Mar-2011, at 9:48 PM, jonat...@mugginsoft.com wrote:
On 3 Mar 2011, at 04:06, Nick Rogers wrote:
Hi,
I have a table view with the custom cell class assigned to its only column
in awakeFromNib method using setDataCell:.
Then I'm doing some drawing in drawInteriorWithFrame: of the NSCell subclass.
The problem is that drawing include four lines of text and an image and a
few lines using NSBezierPath.
This is relatively time consuming and hence when I scroll the table view,
the scrolling is not that smooth and is a bit jerky.
Is there a way to do all this custom drawing in a manner that could make the
scrolling faster.
I use the following approach in an NSView but you can adapt it.
The idea is to cache your background (that is common to all cells) in an
NSImage instance.
When the cell needs drawn you copy from the image cache into your focus
locked view.
Then you can draw the unique cell content - text etc.
Obviously when the cell size changes you have to regenerate your background
image cache.
- (void)drawRect:(NSRect)rect
{
if (!_imageCache) {
// draw to image cache
_cacheRect = [self bounds];
_imageCache = [[NSImage alloc] initWithSize:_cacheRect.size];
[_imageCache lockFocus];
// draw background with beziers etc
[_imageCache unlockFocus];
}
[_imageCache drawInRect:rect fromRect:rect
operation:NSCompositeSourceOver fraction:1.0f];
// now draw unique foreground
}
Regards
Jonathan Mitchell
Developer
Mugginsoft LLP
http://www.mugginsoft.com___
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table view and custom cell optimization problem
Hi, I have a table view with the custom cell class assigned to its only column in awakeFromNib method using setDataCell:. Then I'm doing some drawing in drawInteriorWithFrame: of the NSCell subclass. The problem is that drawing include four lines of text and an image and a few lines using NSBezierPath. This is relatively time consuming and hence when I scroll the table view, the scrolling is not that smooth and is a bit jerky. Is there a way to do all this custom drawing in a manner that could make the scrolling faster. Thanks, Nick ___ 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
converting app to a document based app
Hi, Googled a lot but didn't find anything. Can some one send definitive steps for converting a non-document based app to a document based app. In my app, there is a MainMenu.nib and an AppController class. I'd also want to convert the nib to a xib. I'd really appreciate any help on this. Wishes, Nick ___ 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
running a timer while displaying a sheet
Hi, When I run a sheet, I want it to display a text field which has to be updated every second or so (basically showing a count down 60 Seconds, 59 Seconds and so on. I am starting a timer in main thread using: timerRawScanMsg = [NSTimer timerWithTimeInterval:1.0 target:self selector:@selector(myTimerFireMethod:) userInfo:nil repeats:YES]; [[NSRunLoop currentRunLoop] addTimer:timerRawScanMsg forMode:NSModalPanelRunLoopMode]; [[NSRunLoop currentRunLoop] addTimer:timerRawScanMsg forMode:NSEventTrackingRunLoopMode]; Then I'm starting the sheet using: [NSApp beginSheet:windowRawScanMsg modalForWindow:windowMain modalDelegate:self didEndSelector:@selector(sheetDidEnd:returnCode:contextInfo:) contextInfo:nil]; The myTimerFireMethod: is not getting called, which would update the text field in the sheet. Any help would be greatly appreciated. Wishes, Nick ___ 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
strange horizontal line in scroll view
Hi, I have three matrices (all same sub class of NSMatrix, having prototype as a subclass of NSTextFieldCell), initially inited to have 1 row each and 1, 16 and 16 columns respectively. I'm trying to make a simple hex viewer using matrix instead of complex custom views for display. Then I add rows (typically 256 or so) to all three matrices using addRow to accommodate the number of 16 byte rows in the to be displayed disk (iPod) sector. The three matrices are to be added as subviews to a vertical split view (created in IB). Then I send - sizeToCells and setScrollable:YES to the 3 matrices. Then I send setFrameSize to split view keeping the width same, but increasing the height to accommodate the matrix height (matrix height + 4). Then I add each matrix as sub view of the split view, the split view is a sub view of an scroll view (created in IB). When I scroll down to a particular location in scroll view, I see this horizontal line (across all three matrices columns) with the upper area having a dark shade and lower area being brighter, both slowly fades. This line repeats many times in 256 rows, spaced at constant interval. Please take a look at the attached image. Please suggest what I am doing wrong or need to do. Wishes, Nick inline: screen_shot_line.jpg___ 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: strange horizontal line in scroll view
Hi,
Thanks for the reply.
I used matrix to display data inside a sector years ago, when I had just
started learning cocoa.
I know its a crude and inefficient way to make a hex viewer, but currently its
not required to be sophisticated at all and I didn't have the time to make any
big changes.
I'm pasting here all of the code related to views, if it can give any clues.
My sub-class of NSTextFieldCell: (currently does nothing but sets highlight
color)
@implementation HexCell
-(NSColor *)highlightColorWithFrame:(NSRect)rect inView:(NSView *)controlView
{
return [NSColor yellowColor];
}
@end
My NSMatrix sub-class: (I'm not calling drawRect:)
@implementation MatrixHex
- (id)initWithFrame:(NSRect)frameRect rows:(int)rows columns:(int)columns
{
HexCell *aCell = [self prototype];
// initiates matrix:
[self initWithFrame:frameRect
mode:NSListModeMatrix
prototype:aCell
numberOfRows:rows
numberOfColumns:columns];
[self setScrollable:YES];
return self;
}
- (id)prototype
{
HexCell *aCell = [[ HexCell alloc] init];
[aCell setEnabled:YES];
[aCell setStringValue:@00];
[aCell setFont:[NSFont systemFontOfSize:10.0]];
return aCell;
}
@end
In my AppController, I have:
id matOffset = matrixOffset;
id matHex = matrixHex;
id matAscii = matrixAscii;
matrixOffset = [[MatrixHex alloc] initWithFrame:NSMakeRect(0.0, 0.0, 44.0,
16.0) rows:1 columns:1];
[matrixOffset setCellSize:NSMakeSize(40.0, 13.0)];
[matrixOffset setIntercellSpacing:NSMakeSize(0.0, 2.0)];
matrixAscii = [[MatrixHex alloc] initWithFrame:NSMakeRect(0.0, 0.0,
192.0, 16.0) rows:1 columns:16];
[matrixAscii setCellSize:NSMakeSize(12.0, 13.0)];
[matrixAscii setIntercellSpacing:NSMakeSize(0.0, 2.0)];
matrixHex = [[MatrixHex alloc] initWithFrame:NSMakeRect(0.0, 0.0,
364.0, 16.0) rows:1 columns:16];
[matrixHex setCellSize:NSMakeSize(19.0, 13.0)];
[matrixHex setIntercellSpacing:NSMakeSize(4.0, 2.0)];
rowsInSector = sectorSize / 16;
int i = 0;
for (i = 0; i rowsInSector; i++)//one row already there. so one extra
row for showing ---
{
[matrixOffset addRow];
[matrixHex addRow];
[matrixAscii addRow];
}
[matrixOffset sizeToCells];
[matrixAscii sizeToCells];
[matrixHex sizeToCells];
[splitViewForMatrices setVertical:YES];
[splitViewForMatrices setFrameSize:NSMakeSize([splitViewForMatrices
frame].size.width, [matrixOffset frame].size.height + 4)];
if (matOffset)
{
[splitViewForMatrices replaceSubview:matOffset
with:matrixOffset];
[splitViewForMatrices replaceSubview:matHex with:matrixHex];
[splitViewForMatrices replaceSubview:matAscii with:matrixAscii];
matOffset = matrixOffset;
matHex = matrixHex;
matAscii = matrixAscii;
}
else
{
[splitViewForMatrices addSubview:matrixOffset];
[splitViewForMatrices addSubview:matrixHex];
[splitViewForMatrices addSubview:matrixAscii];
}
[scrollView setNeedsDisplay:YES];
Please share any insights you may have about the problem.
Thanks,
Nick
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app crashing, some errors in console are related to drawing of UI elements
Hi, The app sometime (not always) crashes when run on Leopard OS (32-bit) on an old mac mini. On Leopard (64-bit) and Snow Leopard, the crash never happens. The app is GC enabled. I'm running a separate thread to do some processing, and it does update a few text fields and a progress bar on the main window. The updating of these text fields is done by calling a method (updateTreeProgress:) on main thread using performSelectorOnMainThread: (waitUntilDone: YES) and passing it an NSMutableDIctionary, the method on main thread then picks values from the dictionary and updates the text fields and the progress bar. I have a NSLog at the beginning of this method. But after its called once, and about to be called second time (an NSLog tells me its about to be called using performSelectorOnMainThread:), the NSLog at the very beginning of this method doesn't get printed on console. However, there are other console msgs, that are shown below: 1. updateTreeProgress: called (first time called, only sets min and max value of a progress bar and doesn't sets the text fields) 2. Error: CGContextSetFillColorWithColor: invalid context 3. other NSLog msgs 4. Error: CGContextSetTextMatrix: invalid context 5. Error: CGContextSetFont: invalid context 6. Error: CGContextSetFontSize: invalid context 7. Error: CGContextGetShouldSmoothFonts: invalid context 8. Error: CGContextSetFontRenderingStyle: invalid context 9. Error: CGContextSetFillColorWithColor: invalid context 10. Error: CGContextSetStrokeColorWithColor: invalid context 11. Error: CGContextSetTextPosition: invalid context 12. Error: CGContextShowGlyphsWithAdvances: invalid context 13. Error: CGContextSetTextPosition: invalid context 14. Error: CGContextShowGlyphsWithAdvances: invalid context 15. Error: CGContextSetTextPosition: invalid context 16. Error: CGContextShowGlyphsWithAdvances: invalid context 17. Error: CGContextSaveGState: invalid context 18. Error: CGContextTranslateCTM: invalid context 19. Error: CGContextScaleCTM: invalid context 20. Error: CGContextConvertSizeToDeviceSpace: invalid context 21. Error: CGContextConvertSizeToDeviceSpace: invalid context 22. Error: CGContextGetCTM: invalid context 23. Error: CGContextGetAlpha: invalid context 24. Error: CGContextSaveGState: invalid context 25. Error: CGContextSetAlpha: invalid context 26. Error: CGContextGetCompositeOperation: invalid context 27. Error: CGContextSetCompositeOperation: invalid context 28. Error: CGContextDrawImage: invalid context 29. Error: CGContextRestoreGState: invalid context 30. Error: CGContextRestoreGState: invalid context 31. Error: CGContextConcatCTM: invalid context 32. updateTreeProgress: about to be called using performSelectorOnMainThread: but doesn't get called. and the app crashes here. There are other NSLog msgs between these msgs. Also there are similar msgs, as reproduced below, on system log for various system apps which say that ATSServer died Jun 3 00:30:02 ddlabss-mac-mini /Applications/TextEdit.app/Contents/MacOS/TextEdit[1396]: received ATSServer died message. (old server pid = 3221, new pid = 3285, session ID = 256) Any insights, comments would be greatly appreciated. Wishes, Nick ___ 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
changing dock label name of my app
Hi, for some reasons, my app is named like MyApp-1. And I want the label over the dock icon to appear as MyApp. how to go about it? thanks, Nick ___ 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: changing dock label name of my app
hi, thanks for the reply. actually my app project itself is named as MyApp. Later I'm renaming it to MyApp-1 in the finder before using it (a must). So the folder hierarchy is MyApp-1/Contents/MacOS/MyApp And I want it to remain this way and just want to change the dock icon label from MyApp-1 to MyApp. Wishes, Nick On 26-Nov-2009, at 2:53 PM, Symadept wrote: Project= Edit Active Target Search for MyApp in the search bar. Whereever you find MyApp-1, replace it to MyApp. Regards Mustafa On Thu, Nov 26, 2009 at 5:15 PM, Nick Rogers roger...@mac.com wrote: Hi, for some reasons, my app is named like MyApp-1. And I want the label over the dock icon to appear as MyApp. how to go about it? thanks, Nick ___ 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/symadept%40gmail.com This email sent to symad...@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: changing dock label name of my app
hi, i'm changing the app name to MyApp-1 only in the finder, still the name displayed in the dock when launched is MyApp-1. i'm using OS 10.6.2. thanks, Nick On 26-Nov-2009, at 3:26 PM, Graham Cox wrote: Not 100% sure but isn't the displayed name CFBundleName in the info.plist? --Graham On 26/11/2009, at 8:50 PM, Nick Rogers wrote: hi, thanks for the reply. actually my app project itself is named as MyApp. Later I'm renaming it to MyApp-1 in the finder before using it (a must). So the folder hierarchy is MyApp-1/Contents/MacOS/MyApp And I want it to remain this way and just want to change the dock icon label from MyApp-1 to MyApp. ___ 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
GC, variable optimized away wrongly?
Hi,
In my app running on snow leopard, in a particular situation I'm getting an
undesired behavior.
Debugging a for loop shows a still in scope variable being optimized away.
code: (problem occurs after the loop has been iterated thousands (may be more)
of time.
for loop statement here()
{
NSDate *currentDate = [NSDate date];// ok value here
NSTimeInterval interval = [currentDate
timeIntervalSinceDate:startDate];// ok value here
NSTimeInterval etaDouble = interval * ((totalBlocks - blockCount) /
blockCount); // * debugger doesn't list this variable, mouse shows a pop
up saying variable optimized away by compiler
int eta = (int)etaDouble; // value is 0 here instead of something
int seconds = eta % 60; // value is 0 here instead of something
int minutes = (eta / 60) % 60; // value is 0 here instead of something
int hours = ((eta / 60) / 60) % 24; // value is 0 here instead of
something
int days = ((eta / 60) / 60) / 24; // value is 0 here instead of
something
}
Why the certain variables are not listed in debugger window (only in GC-only
projects)?
Why is etaDouble is being optimized away?
Any suggestions?
Wishes,
Nick
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programmatically determining whether a system would run a GC only app
hi, is it possible to do so, if yes how? googled, seen gestalt, sysctl()... no yield. thanks Nick ___ 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
Moving from standalone apps to some internet related programming
Hi, In my some 2 yrs of cocoa programming with cocoa, I have been able to make a main app (which is selling) and a few related small apps. Now I have to make a small utility that would download the appropriate (best) version of main app that would run on the user system by polling for the MacOS type and its ability to run 64-bit apps. I have no internet related programming experience till now. Are there any resources available for a beginner for developing such a utility. How should I proceed? Also how to know if a particular mac would be able to run a 64-bit app? Some earlier Macs like PowerPC G4 could run Leopard but are not able to run 64-bit apps. Wishes, Nick ___ 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: Moving from standalone apps to some internet related programming
hi, the package is 6 MB for the demo 11 MB for the full version, so packaging all is not desired. thanks, Nick On 27-Oct-2009, at 4:32 AM, Philip Ershler wrote: On Oct 26, 2009, at 4:50 PM, Nick Rogers wrote: Hi, In my some 2 yrs of cocoa programming with cocoa, I have been able to make a main app (which is selling) and a few related small apps. Now I have to make a small utility that would download the appropriate (best) version of main app that would run on the user system by polling for the MacOS type and its ability to run 64-bit apps. I have no internet related programming experience till now. Are there any resources available for a beginner for developing such a utility. How should I proceed? Also how to know if a particular mac would be able to run a 64-bit app? Some earlier Macs like PowerPC G4 could run Leopard but are not able to run 64-bit apps. Wishes, Nick Depending on the size of your app, might it be easier to package up various versions and let the Installer take care if it? Phil ___ 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/roger_s1%40mac.com This email sent to roger...@mac.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
is GC not available on 10.5.8?
Hi, I compiled using Xcode3.2 on 10.6.1, 10.5 base sdk and for Intel 64- bit only with GC only option. The program compiles fine, but the following error is there when launching it on 10.5.8 system: (window doesn't appear) EXC_BREAKPOINT (SIGABRT) Dyld error message: unknown required load command: 0x8022 Thanks, Nick ___ 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: is GC not available on 10.5.8?
HI, I checked all the project and target settings, they are in order and I cleaned all targets before testing. Thanks, Nick On 23-Oct-2009, at 5:34 PM, Nick Rogers wrote: Hi, I compiled using Xcode3.2 on 10.6.1, 10.5 base sdk and for Intel 64- bit only with GC only option. The program compiles fine, but the following error is there when launching it on 10.5.8 system: (window doesn't appear) EXC_BREAKPOINT (SIGABRT) Dyld error message: unknown required load command: 0x8022 Thanks, Nick ___ 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/roger_s1%40mac.com This email sent to roger...@mac.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
to implement a 1 sec repeating timer in a separate thread
Hi,
I have been trying to implement a 1 second repeating timer, but its
leading to retaining the target object of a thread from which I'm
launching this timer thread.
Here's my implementation.
I'm running this method from my thread.
- (void)setUpTimer
{
timerThread = [[NSThread alloc] initWithTarget:self selector:@selector
(startTimer) object:nil];
[timerThread start];
}
- (void)startTimer
{
timer = [NSTimer timerWithTimeInterval:1.0 target:self
selector:@selector(myTimerFireMethod:) userInfo:nil repeats:YES];
NSRunLoop *theRL = [NSRunLoop currentRunLoop];
[theRL addTimer:timer forMode:NSDefaultRunLoopMode];
while (keepTimerRunning [theRL runMode:NSDefaultRunLoopMode
beforeDate:[NSDate distantFuture]]);
}
- (void)myTimerFireMethod:(NSTimer*)theTimer
{
[self setUpdateStatus:YES];
}
From my thread I'm doing something when updateStatus is YES and then
I'm setting it to NO, which is again set to YES by this timer, so that
I get to do something at 1 second interval.
But its leading to referencing the target object of my thread, by 3-4
non-objects (bytes), which shows different descriptions every time as
per GC Monitor Instrument (kind of undefined behavior).
Whats wrong with the above scheme, or how can I make it safe?
Googled a lot but couldn't find a simple timer example that would suit
my need. Can you point me to some example code etc.?
Wishes,
Nick
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Re: to implement a 1 sec repeating timer in a separate thread
Hi, Thanks for the reply. My question was very vague, I admit. But now I have moved to your suggestion. I'm setting up the timer via [NSTimer scheduledTimerWithTimeInterval: 1.0 target: self selector: @selector(doSomething:) userInfo: nil repeats: YES]; But the doSomething is not getting called at all. May be because this thread is busy doing something else, so do I have to setup the timer in say main Thread. Earlier I was doing so, by setting up the timer by calling this setting up method as [self performSelectorOnMainThread:], and it was working, but even after invalidating the timer, the timer was still referencing the object that contained NSTimer *timer. Any suggestions? Nick On 22-Oct-2009, at 2:32 PM, Dave Keck wrote: I'm having a really hard time making sense of you message... I have been trying to implement a 1 second repeating timer, but its leading to retaining the target object That's expected behavior - NSTimers retain their targets. The target won't be deallocated until the timer has been invalidated (assuming the timer was the only thing keeping the target alive.) But its leading to referencing the target object of my thread, by 3-4 non-objects (bytes), which shows different descriptions every time as per GC Monitor Instrument (kind of undefined behavior). Woah, this sentence has my completely baffled: o Prior to this sentence, you were talking about retaining/ releasing, not you're talking about garbage collection. I think I'm still following you though - regardless, the timer is keeping the target alive. o 3-4 bytes of what? Why do these bytes matter? == Moment of clarity in 3... 2... 1... Oh. I think you're just trying to have a method called every second. If that's the case, no need to concern yourself with threads and... well, whatever it is that's going on in that code snippet. :D [NSTimer scheduledTimerWithTimeInterval: 1.0 target: self selector: @selector(doSomething:) userInfo: nil repeats: YES]; That will call self's -doSomething: method every second. Is that what you're trying to accomplish? ___ 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
info gc-roots interpretation
Hi, I have an ivar in AppController, a pointer to the class Volume. When running info gc-roots on it before setting it nil, the results are: (gdb) info gc-roots 0x2004f9340 Number of roots: 40 Root: 0 Kind: bytes rc: 1 Address: 0x000200543b40 Offset: 0x0008 1 Kind: object rc: 0 Address: 0x0002004f9340 Class: Volume Root: 0 Kind: stack rc: 0 Address: 0x7fff5fbfeab0 Frame level: 1 Symbol: unknown 1 Kind: object rc: 0 Address: 0x00020015d000 Class: AppController ivar: selectedPTVolume 2 Kind: object rc: 0 Address: 0x0002004f9340 Class: Volume . . . and 38 more, most with rc: 0. When I set this ivar to nil. the results are: (gdb) info gc-roots 0x2004f9340 Number of roots: 1 Root: 0 Kind: bytes rc: 1 Address: 0x000200543b40 Offset: 0x0008 1 Kind: object rc: 0 Address: 0x0002004f9340 Class: Volume When I try to run info gc-roots on the first entry, the results are: (gdb) info gc-roots 0x000200543b40 Number of roots: 1 Root: 0 Kind: bytes rc: 1 Address: 0x000200543b40 Is there a retain cycle problem. The memory gathered by this ivar is not freed, as per Obj-Alloc Instrument. What shall I make out of these results and how can they lead to refinement (so that all the memory referenced by this ivar is freed)? Wishes, Nick ___ 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: info gc-roots interpretation
Hi,
Thanks for all the valuable replies.
I tried GC Monitor instrument and this Volume pointer, is referenced
by (apart from the AppController object) by just 32 bytes (non-object).
Extended detail description shows different non-related objects on
different runs.
The stack trace in every such run shows a method [Volume setUpTimer].
While a thread is running with target Volume object, I call setUpTimer
from this thread using [self performSelectorOnMainThread:@selector
(setUpTimer) withObject:nil waitUntilDone:YES];
So I don't see any direct access to ivars from this thread. The method
is as follows:
- (void)setUpTimer
{
timer = [NSTimer timerWithTimeInterval:1.0 target:self
selector:@selector(myTimerFireMethod:) userInfo:nil repeats:YES];
[[NSRunLoop currentRunLoop] addTimer:timer
forMode:NSDefaultRunLoopMode]; //Run loop needs to be running to fire
the timer
}
Here timer is an ivar in Volume of type NSTimer*. Is setting timer in
the above method causing the problem?
Here's the myTimerFireMethod:
- (void)myTimerFireMethod:(NSTimer*)theTimer
{
[self performSelectorOnMainThread:@selector(setUpdateStatus:)
withObject:[NSNumber numberWithBool:YES] waitUntilDone:NO];
}
Thanks,
Nick
On 21-Oct-2009, at 9:09 PM, Bill Bumgarner wrote:
On Oct 21, 2009, at 1:39 AM, Nick Rogers wrote:
(gdb) info gc-roots 0x2004f9340
Number of roots: 1
Root:
0 Kind: bytes rc: 1 Address: 0x000200543b40 Offset:
0x0008
1 Kind: object rc: 0 Address: 0x0002004f9340 Class: Volume
Is there a retain cycle problem.
The memory gathered by this ivar is not freed, as per Obj-Alloc
Instrument.
What shall I make out of these results and how can they lead to
refinement (so that all the memory referenced by this ivar is freed)?
rc: 1 means that the object has been CFRetain'd by something.
That is, something somewhere decided that it was going to bypass the
collector and has failed to call CFRelease when done.
Use the ObjectAlloc instrument in Instruments to track it down. You
can also:
set env MallocStackLoggingNoCompact 1
set env AUTO_REFERENCE_COUNT_LOGGING 1
And then use 'info malloc 0x2004f9340'. It'll typically show all
CFRetain/CFRelease events. (But not always -- there is a bug that
prevents it from showing all of 'em. However, ObjectAlloc works
around it.)
b.bum
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GC Basic questions
Hi, Since the methods -release, -retain and -autorelease are no-ops with GC only enabled, How do I release everything associated with an ivar (pointer to a class) in AppController? Currently I'm doing it by setting this pointer as nil. Is it ok? Also when I follow certain steps, this pointer gets a lot of memory attached, down the line. which gets released (when I set it to nil) as per Obj-Alloc instrument. But when following another certain steps, this memory doesn't get released (when setting this pointer nil), why? With GC only enabled this should get freed up. Thanks, Nick ___ 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
Should VM shrink to original when releasing huge memory
Hi, I'm using Snow Leopard and Xcode 3.2. When my program runs the VM grows from 50MB to around 550MB. So when I release the memory, should VM shrink to the original 50MB, in this case it isn't so? Thanks, Nick ___ 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
Object Alloc Instrument and releasing question
Hi, I'm running Xcode 3.2 on Snow Leopard. There is an object of type HDIR which can contains a mutable array of children objects of type HDIR, so a tree is formed. I can go back using the Back button and release this HDIR type root object. And then again form a new tree. When a tree is formed the VM according to Activity Monitor reaches a high value and when I release this tree, it doesn't come any lower, but when I again form the tree, it starts increasing from that max value. Does it mean that VM is not being freed, due to some bug in my releasing the tree? Here is some Object Alloc instrument data after the first tree is formed (1), after releasing that tree (2) and after again making a tree (3): CategoryLive Bytes #Living #Transitory Overall Bytes #Overall 1. HDIR1.73 MB 10333 10428 3.48 MB 20761 2. HDIR0 0 20761 3.48 MB 20761 3. HDIR1.73 MB 10333 31189 6.97 MB 41522 Does the #Living being added to #Transitory means that tree is not actually freed? The Instrument docs says about Object Alloc: This instrument captures the following information: Category - typically a Core Foundation object, an Objective-C class, or a raw block of memory. Net Bytes - the number of bytes of this type currently allocated but not yet released. # Net - the number of objects or memory blocks of this type currently allocated but not yet released. Overall Bytes - the total number of bytes of this type that have been allocated, including those that have been released. # Overall - the total number of objects or memory blocks of this type that have been allocated, including those that have been released. # Allocations (Net / Overall) - A histogram of the current and total counts. The bars are normally shades of blue. They are colored shades of yellow when the ratio between the total number of objects and the peak, or the ratio between the peak and the current number, is 1/3 or less. The bars are shades of red when the ratio is 1/10 or less. It doesn't list the meaning of #Transitory. Thanks, Nick ___ 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
NSZombieEnabled giving rise to new bug
Hi, I order to track a bug which made an outline view hang the GUI, I set NSZombieEnabled with value YES in the app's environment variable. Now even before I could get to the point of GUI hangs the following is reported in console: 2009-10-12 20:28:53.651 My Program[33987:6263] *** -[CFArray count]: message sent to deallocated instance 0x1149a9310 [Switching to process 33987] [Switching to process 33987] sharedlibrary apply-load-rules all 2009-10-12 20:29:03.917 My Program[33987:6263] *** NSInvocation: warning: object 0x1149a9310 of class '_NSZombie_CFArray' does not implement methodSignatureForSelector: -- trouble ahead 2009-10-12 20:29:03.918 My Program[33987:6263] *** NSInvocation: warning: object 0x1149a9310 of class '_NSZombie_CFArray' does not implement doesNotRecognizeSelector: -- abort kill quit The code is so complex and its also hard to reach the point where I'm doing the wrong -[CFArray count]. Is it possible to some how to get it automatically stop at [CFArray count] OR is it possible to set a breakpoint at all [CFArray count] in Xcode or in .gdbinit. Any other suggestions are also welcome. Wishes, Nick ___ 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
releasing an object
Hi, There is a instance variable in my AppController class named Volume. I'm doing alloc and initWithDictionary to get an instance of Volume. I have to do [selectedPTVolume retain]; when allocing to get it to work properly. When destroying this object to get a new one, I'm doing [selectedPTVolume release]; but then the retainCount is still one. If I release it twice, the GUI hangs (selectedPTVolume contains the root item of a outline view). How to release it properly? Shall I get its retainCount and then release it that many times? Thanks, Nick ___ 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: releasing an object
Hi, Thanks for the reply.
In AppController.h I have an ivar:
Volume *selectedPTVolume;
In a method in AppController, I have the following:
NSMutableDictionary *data = [partitionListDictArray objectAtIndex:
[tableViewPTList selectedRow]];
selectedPTVolume = [[Volume alloc] initWithDictionary:data];
[selectedPTVolume retain];// if I comment this the GUI hangs,
selectedPTVolume contains an ivar HDIR *dirRoot; which is passed as
the root item of an outline view. dirRoot has an mutable array, which
contains other HDIR objects as its children and so on a tree is formed.
In a method, where I need to release selectedPTVolume, I have:
if (selectedPTVolume)
{
volumeScanType = [selectedPTVolume volumeScanType];//
selectedPTVolume retainCount = 2 here
[selectedPTVolume release];
[selectedPTVolume release];// selectedPTVolume retainCount = 1 here
selectedPTVolume = nil;// selectedPTVolume retainCount = 0 here and
sometimes still shows as 1 while debugging.
if (outlineViewData)
[outlineViewData reloadData];/ crashes here
}
Releasing selectedPTVolume also releases HDIR *dirRoot.
Wishes,
Nick
On 10-Oct-2009, at 4:06 PM, Graham Cox wrote:
On 10/10/2009, at 9:31 PM, Nick Rogers wrote:
Shall I get its retainCount and then release it that many times?
For heavens' sake, NO!
Ignore retain counts. They are not reliable evidence of anything you
can use. Instead, just follow the rules:
http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/MemoryMgmt/Articles/mmRules.html
I'm doing alloc and initWithDictionary to get an instance of Volume.
I have to do [selectedPTVolume retain]; when allocing to get it to
work properly.
Show your code. This sounds wrong, but without seeing the code it
can't really be inferred from the description.
--Graham
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releasing a object containing others in a array
Hi,
I have a class as following:
@interface NodeTypeOrph : NSObject {
int count;
ItemTypeOrph*key[4]; // Warning: indexing starts at 0, not 1
NodeTypeOrph*branch[5]; // Fake pointers to child nodes
}
when I'll send a release to an object of this type, will it
automatically release the arrays of ItemTypeOrph and NodeTypeOrph
objects.
Or do I have to explicitly traverse and release?
Wishes,
Nick
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NSRunLoop method - configureAsServer alternative in 10.6.1?
Hi, When I use [[NSRunLoop currentRunLoop] configureAsServer]; after creating a service using NSConnection, it works. But -configureAsServer is declared as deprecated with no alternative suggested. I tried removing it and the code doesn't work. server code snippet: (doesn't work) MYMessageServer *server = self;// here self is in instance of MyMessageServer class NSConnection *defaultConnection; [[NSNotificationCenter defaultCenter] addObserver:server selector:@selector(connectionDidDie:) name:NSConnectionDidDieNotification object:nil]; defaultConnection = [NSConnection serviceConnectionWithName:@MyCompanyName.MyProductName.serverFull rootObject:server]; [defaultConnection addRunLoop:[NSRunLoop currentRunLoop]]; // not doing [[NSRunLoop currentRunLoop] run]; here as its the main thread. Client code snippet: server = [[NSConnection rootProxyForConnectionWithRegisteredName :@MyCompanyName.MyProductName.serverFull host:nil] retain]; server is nil after the above line is executed. Where can I find a simple implementation? Or what changes to make to the above code? Thanks, Nick ___ 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: [Solved] NSRunLoop method - configureAsServer alternative in 10.6.1?
Hi, Very basic error: did [defaultConnection retain]; in server code. Seems very basic but when I was doing - configureAsServer, it was working without retaining. Thanks, Nick On 30-Sep-2009, at 7:53 PM, Nick Rogers wrote: Hi, When I use [[NSRunLoop currentRunLoop] configureAsServer]; after creating a service using NSConnection, it works. But -configureAsServer is declared as deprecated with no alternative suggested. I tried removing it and the code doesn't work. server code snippet: (doesn't work) MYMessageServer *server = self;// here self is in instance of MyMessageServer class NSConnection *defaultConnection; [[NSNotificationCenter defaultCenter] addObserver:server selector:@selector(connectionDidDie:) name:NSConnectionDidDieNotification object:nil]; defaultConnection = [NSConnection serviceConnectionWithName:@MyCompanyName.MyProductName.serverFull rootObject:server]; [defaultConnection addRunLoop:[NSRunLoop currentRunLoop]]; // not doing [[NSRunLoop currentRunLoop] run]; here as its the main thread. Client code snippet: server = [[NSConnection rootProxyForConnectionWithRegisteredName :@MyCompanyName.MyProductName.serverFull host:nil] retain]; server is nil after the above line is executed. Where can I find a simple implementation? Or what changes to make to the above code? Thanks, Nick ___ 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/roger_s1%40mac.com This email sent to roger...@mac.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
Xcode3.2 build and analyze warning for NSString allocation
Hi,
When I alloc and init a NSString the following way, there is warning
that:
Potential leak of an object allocated on line 526 and stored in
sizeDisp.
1. Method returns an Objective-C object with a +1 retain count
(owning reference).
2. Object returned to caller as an owning reference (single retain
count transferred to caller).
3. Object allocated on line 526 and stored into 'sizeDisp' is
returned from a method whose name
('tableView:objectValueForTableColumn:row:') does not contain 'copy'
or otherwise starts with 'new' or 'alloc'. This violates the naming
convention rules given in the Memory Management Guide for Cocoa
(object leaked).
The code is as follows:
if ([[tableColumn identifier] isEqual:@Size] == YES)
{
NSString *sizeDisp;// line 526
NSNumber *size = [data objectForKey:@kDeviceSize];
unsigned long long sizeInBytes = [size
unsignedLongLongValue];
if (sizeInBytes 1000*1000)
{
sizeDisp = [[NSString alloc] initWithFormat:@%.2f KB, ((float)
sizeInBytes/1000)];
}
else if (sizeInBytes 1000*1000*1000)
{
sizeDisp = [[NSString alloc] initWithFormat:@%.2f MB, ((float)
sizeInBytes/(1000*1000))];// warning number 1 (as listed above)
}
else
{
sizeDisp= [[NSString alloc] initWithFormat:@%.2f GB, ((float)
sizeInBytes/(1000*1000*1000))];
}
return sizeDisp;// warning 2 3 (as listed above)
}
When I do sizeDisp = [NSString stringWithFormat:@%.2f MB, ((float)
sizeInBytes/(1000*1000))];
The warning disappears in the next build and analyze.
Can I hope for a small analysis of the above from anybody?
Thanks,
Nick
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Stability on Snow Leopard
Hi, The program which worked perfectly on Leopard, crashes frequently at various stages on Snow Leopard. Also it may or may not crash at the same stage on different runs, e.g. on bringing up a NSSavePanel in a sheet. What do I need to do to make it robust on Snow Leopard. Is it less forgiving in terms of Memory Management? Do I need to go for code signing, will that help improve stability? Thanks, Nick ___ 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
basic threading question: if parent thread completes
Hi, I need to know this before going in for changes that are too complex. I spawned a thread from AppController (thread1). From thread1, I spawn another thread2. thread1 completes. Will thread2 terminate, give rise to anything else, or just keep on working usually? Wishes, Nick ___ 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
saving files/folders in foreign language names
Hi, I have the following hierarchy to save programatically (e.g.): my english path name/some french dir name/some french file name.file Now I'm using NSFileManager to do this: 1. create a folder at my english path name. correctly done. 2. change current dir to my english path name and creating some french dir name. correctly done. 3. change current dir to my english path name/some french dir name. fails as the file is saved eventually in the folder my english path name 's last dir, and not in some french dir name. 4. I write to the file using write(), for this I get the FileHandle (using NSFileHandle) and then file descriptor from file handle. The data goes into the file but after closing the file handle, the file is showing zero bytes. I need to fix this immediately. Please help. What other options I have besides NSFileManager and NSFileHandle, that would work? Wishes, Nick ___ 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
debug control not reaching init method
Hi, This is my third app in Xcode3. Had to use Xcode3 becuase it has to be a 64-bit app. In earlier two apps, the control reaches to the breakpoint on the first line of the init method of AppController class, while debugging. But in this third one, it is not reaching the breakpoint, and the window appears. TableView data source methods are being called (in AppController) as the table view shows data. I have tried everything. Clean All Targets, checked all target memberships of all the classes. Same is happening when I set the config to i386. The mode set is debug. What I may be missing here? Thanks, Nick ___ 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
which temp dir to use?
Hi, NSTemporaryDirectory(), returns something like /var/temp/we/weOIDM +mck Whereas I want to store files at a place with a fixed path. So where should I save temp files? and how can I get that path programatically everytime? Thanks, Nick ___ 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
To run a block of code at every 1 second
Hi,
Here's the code:
the following method is running in a separate thread:
- (void)myFucntion
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
for (;;)// for loop starts here and is very quick, 100s of iterations
per second
{
{
// this block of code needs to be run at around 1
second interval
// code here
[appController
performSelectorOnMainThread:@selector(updateProgress:) withObject:data
waitUntilDone:YES];
}
// other loop code here
}
[loop release];
}
I have tried some crude methods for implementing this running of block
of code at 1 second interval but they don't perform as expected, for
that I used running a separate thread setting a BOOL var to YES at
every 1 second.
Is there a better way to do it?
Thanks,
Nick
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autorelease problem
Hi,
My program is crashing when releasing the NSAutoreleasePool.
I have in my code:
- (void)MyFunction
{
while (count)
{
NSAutoreleasePool *innerloop = [[NSAutoreleasePool alloc] init];
HDIR *dir = [someArray objectAtIndex:count];
NSString *fileNameNew = [self suggestedRepeatFileName:[dir fileName]
inDir:someDir];
[dir setFileName:fileNameNew];
[innerloop release];//crashing here
count--;
}
}
- (NSString*)suggestedRepeatFileName:(NSString *)fileName inDir:(HDIR
*)dir
{
// some code here
NSString *fileNameReturned = [NSString stringWithFormat:@%@,
someString];
return fileNameReturned;
}
Is there any problem with the code here?
Please help.
Wishes,
Nick
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Re: autorelease problem
hi,
thanks for the reply.
someString in the method suggestedRepeat... is an NSMutableString
allocated and initialized within that method.
-[HDIR setFileName] is as follows:
- (void)setFileName:(NSString *)name
{
name = [name copy];
[fileName release];
fileName = name;
}
Also the [innerloop release]; is crashing the first time through the
loop.
Regards,
Nick
On 26-Jan-09, at 10:53 PM, Matt Gough wrote:
On 26 Jan 2009, at 18:12, Nick Rogers wrote:
- (NSString*)suggestedRepeatFileName:(NSString *)fileName inDir:
(HDIR *)dir
{
// some code here
NSString *fileNameReturned = [NSString stringWithFormat:@%@,
someString];
return fileNameReturned;
}
Is there any problem with the code here?
Hard to tell without knowing where someDir or someString came from,
or what -[HDIR setFileName] is up to.
Does it crash the first time though the loop or later?
Matt
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NSTextField super imposes the text
Hi, I have to frequently show text in the status field of my app. The status field is an NSTextField. but it super imposes the text that is sent to it thru setStringValue: I tried setting the text to @, between the calls, but to no avail. This is happening only in Prior-Leopard Mac OSX. please help. Wishes, Nick ___ 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
NSActionCell, is there a double click?
Hi, I have the outlineview cell which is a subclass of NSActionCell. I can set its target and action with setTarget: and setAction:. But it invokes the method on single click. Whereas I want the method to be called only on double click, I have seen the docs and there is no method like setDoubleAction. How to do it. Thanks, Nick ___ 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: NSTextField super imposes the text
Here super-imposition means that text appears garbled and is put over the previous text. Thanks, Nick On 26-Dec-08, at 7:48 PM, Nick Rogers wrote: Hi, I have to frequently show text in the status field of my app. The status field is an NSTextField. but it super imposes the text that is sent to it thru setStringValue: I tried setting the text to @, between the calls, but to no avail. This is happening only in Prior-Leopard Mac OSX. please help. Wishes, Nick ___ 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/roger_s1%40mac.com This email sent to roger...@mac.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: NSActionCell, is there a double click?
Thanks for the reply. I have earlier tried setDoubleAction: for the entire outlineview, but its working only on Leopard and not before Leopard. I'm setting the dataCell of all the columns as non-editable, may be it has something to do with that. But I have also tried setting the desired column's dataCell as both editable and non-editable. Even then it doesn't work on Prior-Leopard. Thanks, Nick On 26-Dec-08, at 8:01 PM, Jerry Krinock wrote: On 2008 Dec, 26, at 6:23, Nick Rogers wrote: I have the outlineview cell which is a subclass of NSActionCell. I can set its target and action with setTarget: and setAction:. But it invokes the method on single click. Whereas I want the method to be called only on double click, I have seen the docs and there is no method like setDoubleAction. How to do it. It looks like you must set the action for the entire table -- NSTableView has a setDoubleAction: method. ___ 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/roger_s1%40mac.com This email sent to roger...@mac.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
saving filename suggestion in NSSavePanel
Hi, I looked the docs for NSSavePanel, but it doesn't list any method for putting in a suggested filename to the user. How to do it? Thanks, Nick ___ 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
Memory Management Q. 1 and 2
Hi,
While learning to program in cocoa, people usually start out without
giving much thought to memory management especially about freeing the
used up memory.
I can say so, because I know a few people like that and also I'm one
of them.
My focus was on to get started on the project quickly and complete it
ASAP.
But now that its almost finished up, I'm forced to think about freeing
memory.
These are 2 questions in a series of more upcoming ones.
1. There is an instance variable (NSMutableArray*) in my object, that
I use to hold a large number of elements.
Now when I destroy this object, I don't release the array.
Will it have any effect like making the program crash, subsequently?
Especially when I again create the same kind of object again and again
fill the array.
2. I'm feeding an object of type HDIR* named dirRoot to the
NSOutlineView.
This HDIR can have a number of children of type HDIR* stored in an
NSMutableArray * named children (an ivar in HDIR object).
So its a tree.
When I run the program, the Activity Monitor shows the virtual memory
increasing as this tree is populated.
After a substantial increase in VM, I stop the tree and then release
this dirRoot (HDIR*) object.
But at this time the VM remains the same in Activity Monitor.
The dirRoot may also be retained by some other object, but I have
taken care to release those objects as well.
So my question is whether this tree is released and the VM shown in
Activity Monitor may not be released back to the system.
OR the tree may not have been released at all?
the dealloc method of HDIR is as follows:
- (void)dealloc
{
if (children)
{
while ([children count])
{
HDIR *child = [children lastObject];
[children removeLastObject];
[child release];
}
[children release];
children = nil;
}
if (fileName)
{
[fileName release];
}
if (pathName)
{
[pathName release];
}
[super dealloc];
}
Is there a problem in this method?
Thanks,
Nick
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splash screen how to?
Hi, I have to show a splash screen at the software launch. The window should have no edges etc and should stay for a few seconds. How to go about it? Is there any good resource available for this? Thanks, Nick ___ 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
how to pass arguments by reference
Hi,
I have the following in my .m file:
- (UInt32)traverseTreeStraightReturnedDirection:(int)treeDirection
returnedTreeDepth:(int)treeDepth
returnedKey:(HPlusCatalogKey)catKey
lookForKey:(HPlusCatalogKey)lastKey
{
// code here
}
But the error when compiling is parse error before token.
Is passing by reference not allowed or is there any other syntax that
I should follow?
Thanks,
Nick
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Re: how to pass arguments by reference
Hi, thanks for the reply.
Now I have:
- (UInt32)traverseTreeStraightReturnedDirection:(int)treeDirection
returnedTreeDepth:(int)treeDepth
returnedKey:(HPlusCatalogKey)catKey
lookForKey:(HPlusCatalogKey)lastKey
{
// code here
}
Still the same error: parse error before token
Thanks,
Nick
On 10-Dec-08, at 9:15 PM, Dave DeLong wrote:
Put the before the variable type:
- (UInt32) traverseTreeStraightReturnedDirection:
(int)treeDirection...
HTH,
Dave
On Dec 10, 2008, at 8:43 AM, Nick Rogers wrote:
Hi,
I have the following in my .m file:
- (UInt32)traverseTreeStraightReturnedDirection:(int)treeDirection
returnedTreeDepth:(int)treeDepth
returnedKey:(HPlusCatalogKey)catKey
lookForKey:(HPlusCatalogKey)lastKey
{
// code here
}
But the error when compiling is parse error before token.
Is passing by reference not allowed or is there any other syntax
that I should follow?
Thanks,
Nick
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any control over NSRunAlertPanel placing on screen
Hi, I want the alert panel to be placed in the middle of my main window. Is it possible? I gather that NSRunAlertPanelRelativeToWindow() is declared deprecated. Thanks, Nick ___ 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 [EMAIL PROTECTED]
to get handle to File/1.jpg
Hi, How do I obtain a NSFileHandle to this file which has a forward slash in the name to be able to write to this file. Supplying the path to NSFileHandle with filename in quotes also fails. If not possible is there any other way to write to such a file. I can't use open(), as the file name could contain chars from other language. Thanks, nick ___ 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 [EMAIL PROTECTED]
placing a window in the top left corner
Hi, whenever my app opens a second preview window, I want it to be positioned at the top left corner of the desktop screen. I have come across two methods in NSWindow, they are: – setFrameTopLeftPoint: and – cascadeTopLeftFromPoint: But these require a point as input. How do I calculate this point? Also if the user has the dock vertical on the left side, how do I adjust for that? What if the user has different resolution like 800x600? Thanks, Nick___ 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 [EMAIL PROTECTED]
NSOutlineView setDoubleAction: working on 10.5, but not on 10.4.11
Hi, when double clicking on an item the action method is not being called in 10.4.11. While the Apple docs say it is Available in Mac OS X v10.0 and later. Is there something I may be missing. Its working fine on Leopard. Thanks, Nick ___ 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 [EMAIL PROTECTED]
to raise another cocoa app's window from the dock
Hi, Have searched the net a lot and even tried AppleScript-enabling the app, but nothing would work. My app should be able to bring to front another cocoa app's window to the front. I have tried SetFrontProcess(), but all it does is to bring the menus to the front and not the minimized window of another app. This is possible and also without AppleScript, as I have seen another commercial app (unrelated) do the same thing (i.e. raising the minimized window to the front). That app's dictionary doesn't show in script editor, so I guess they may have done it without AppleScript. Please help. Wishes, Nick ___ 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 [EMAIL PROTECTED]
how to prevent sleep mode when app is running
Hi, When the computer goes into sleep mode my app also seems to be taking forever in doing the current task. So how can I prevent the computer from going into sleep mode when my app is running? Wishes, Nick ___ 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 [EMAIL PROTECTED]
how to run my app in privileged mode
Hi, I wish to access disk sectors using open() and pread(). but it fails for the system disk. So how can I get the user to type in admin passwd and then run my app in privileged mode. Please point me to any sample code etc. I tried BetterAuthorizationSample code from apple, but using it to access disk sectors is 10 times slower then open() and pread(), cause it installs a helper tool in the system and to get sectors from it is slow. Wishes, Nick ___ 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 [EMAIL PROTECTED]
how to implement ETA
Hi, I want to show time remaining while executing a loop. How to go about it? WIshes, nick ___ 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 [EMAIL PROTECTED]
main menu's missing connection
Hi, In the instance window there is a yellow dot on the main menu as well as the main window. How to find which children has a bad or missing connection? Thanks, Nick ___ 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 [EMAIL PROTECTED]
creating a resource fork and writing raw bytes to it
Hi, My app has to create the resource fork of a file and then write raw bytes picked up from the disk to it. Is there any support in cocoa for this. For writing to the data fork I'm creating the file with NSFileManager and then writing using write(). Is there any similar mechanism for creating resource fork. Have googled a lot, but to no avail. Wishes, Nick ___ 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 [EMAIL PROTECTED]
whether to use NSSavePanel or something else
Hi, I have to let the user browse thru the filesystem and choose a directory for saving some data. So is NSSavePanel right for the job or there is something else too. cause from what I gather NSSavePanel requires to type in a fileName and then returns the path to that file. Where as I don't want the fileName typing field in the save panel. WIshes, Nick ___ 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 [EMAIL PROTECTED]
holding NSOutlineView from display
Hi,
my app has only one window, with the outline view in a tab, which I
show after the data is ready.
The problem is how can I hold outline view until, the data is ready
completely.
I gather that I'd have to do something with the method:
- (id)outlineView:(NSOutlineView *)ov child:(int)index ofItem:(id)item
{
if (item)
return [item childAtIndex:index];
else
return [selectedPTVolume dirRoot];
}
if I return nil in this method (until my data is ready) instead of
dirRoot, will it do the trick, and will i have to make changes to
other methods in my outlineview implementation?
If this doesn't work is there any other way?
Wishes,
nick
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do i have to convert each unichar on ppc and intel
hi, I'm using: [NSString stringWithCharacters:gptEntry.partName length:36]; where gptEntry struct have been filled in from the disk. The string shows correct on ppc, while shows garbage on intel. So how can I convert an entire such unichar array to correct-endian format? Is there any built-in support? Thanks, Nick ___ 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 [EMAIL PROTECTED]
NSImage and NSImageView issues (not drawing correctly)
Hi, 1. I'm using: NSImage *image = [[NSImage alloc] initWithData:data]; NSImageRep *imageRep = [image bestRepresentationForDevice:nil]; NSImage *imageToBeDrawn = [[NSImage alloc] init]; [imageToBeDrawn addRepresentation:imageRep]; if ([imageToBeDrawn isValid] == YES) [previewImage setImage:imageToBeDrawn]; else [previewImage setImage:nil]; [data release]; // where previewImage is of (NSImageView *) type. But certain images (even the small size like 100KB) are not completely drawn, and the display shows garbled image. certain PNG image shows only a black rectangle. only some small images are drawn in good quality. 2. Can I show text in NSImageView. Certain same category software are showing text in the same place as their NSIMageView. So I was wondering, how thats possible. (I have checked their nib files, and the text show at the same place as thier NSImageView). Any help would be greatly appreciated. Wishes, Nick ___ 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 [EMAIL PROTECTED]
