Re: NSimage leaking memory or probably just me
Re: NSimage leaking memory or probably just me
- Subject: Re: NSimage leaking memory or probably just me
- From: Alexander Cohen <email@hidden>
- Date: Thu, 28 Sep 2006 16:03:54 -0400
Can you explain better how i would do this. I have all different
types of images from which i create NSBitmapImageReps then get their
data and save them out. How do i get a NSBitmapImageRep from say, and
eps without going through NSImage?
AC
On 28-Sep-06, at 2:55 PM, Bruce Johnson wrote:
I have had the same problem with NSImages, large loops and large
amounts of data. What I do is create one NSImage and then create
NSBitmapImageReps inside the loop (instead of NSImages) and switch
them in and out of the NSImage (via removeRepresentations and
addRepresentations) This seems to work.
It is a hassle in that you can't use the convience function of
initWithContentsOfFile:
On 9/28/06, Shawn Erickson <email@hidden> wrote:
On 9/28/06, Alexander Cohen <email@hidden> wrote:
> Hi, i have a large loop that looks like this:
>
>
> for ( i = 0; i < count; i++)
> {
> NSAutoreleasePool* pool =
[[NSAutoreleasePool alloc] init];
>
> NSImage* img = [[NSImage alloc]
initWithContentsOfFile:self];
> if (!img) {
> [pool release];
> continue;
> }
>
> if (img) [img release];
> img = nil;
>
> [pool release];
> pool = nil;
> }
>
> Every time around the loop, memry is going up drastically and never
> comes down. Am i missing something? Seems to me like the memory
> should stay pretty much the same. ANy ideas?
What "memory" goes up? How are determining that memory usage is
increasing?
Also the logic in you loop is rather over kill IMHO...
for ( i = 0; i < count; i++)
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSImage *img = [[[NSImage alloc] initWithContentsOfFile:self]
autorelease];
if ([img isValid]) { // or just check for not nil ... note a
message to nil is a no-op)
... do your stuff here ...
}
[pool release];
}
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Bruce Johnson
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