Re: Memory management problem - solvee
Re: Memory management problem - solvee
- Subject: Re: Memory management problem - solvee
- From: Michael Heinz <email@hidden>
- Date: Sat, 6 Aug 2005 08:41:15 -0400
Thanks, Jon.
I've never used my own autorelease pool, I'll have to look into it.
On Aug 6, 2005, at 8:05 AM, Jonathan del Strother wrote:
I believe the standard way of handling this would be to create your
own NSAutoreleasePool, which you can empty at periodic intervals.
Autoreleased objects created within this loop will go into your own
pool automatically :
NSAutoreleasePool* myPool = [[NSAutoreleasePool alloc] init];
int pageIndex = 0;
while (pageIndex < totalPages)
{
convertPage(pageIndex);
pageIndex++;
if ((pageIndexP)==0) //Release the pool every 50 pages to
clear it out
{
[myPool release];
myPool = [[NSAutoreleasePool alloc] init];
}
}
[myPool release];
Something like that, anyway.
Jon
On 6 Aug 2005, at 01:58, Michael Heinz wrote:
I figured out the solution to my problem; I broke my work loop
into a routine which converted one page, then set a timer which
called the work loop again to convert the next page, etc..
This approach allowed the main run loop to run interleaved with
the work loop, so garbage collection and menu items work properly.
On Aug 5, 2005, at 6:48 PM, Michael Heinz wrote:
I've got a program to convert PDFs to Jpegs formatted for the
Sony PSP (http://pdf2psp.sourceforge.net) that's got a nasty
memory problem - when processing a large pdf it becomes huge
(over a gigabyte!) - but when processing is finished it shrinks
back to a svelte 2 megs.
Malloc debugger says I'm not leaking - but obviously I need to
periodically force a garbage collection loop. Is there some way
to force garbage collection to occur?
Can I spawn a secondary thread to do garbage collection?
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