macOS Instruments Question About GeneralBlock-0

kpua said:

Looks like you're mallocing a lot of zero-length buffers. An odd thing to do. Try looking at one of the stack traces to see where you're doing it.

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kpua said:

Your program is doing essentially this very often:

Code:

malloc( 0 )

which allocates 0 bytes. This probably isn't really free... The malloc system probably still does the book-keeping for these allocations, which still takes space.


To figure out where this is happening, click the little arrow next to GeneralBlock-0. Click on one of the entries in the "Object Address" column and then click the button at the bottom that shows the sidebar. This shows the stack trace for the allocation. That will show you where you program is doing this funny allocation. (I'd suggest looking at several of these to make sure the location is the same each time.)

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#import <UIKit/UIKit.h>

int main(int argc, char *argv[]) {
    
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
    [B]int retVal = UIApplicationMain(argc, argv, nil, nil);[/B] [COLOR="Green"]//Line 14[/COLOR]
    [pool release];
    return retVal;
}