CODEWITHSUNDEEP
iphoneobjective-cxcodememory-managementfor-loop
GuybrushThreepwood
GuybrushThreepwood

Reputation: 5616

Speeding up a For Loop with large number of Iterations ? Objective C

I have the following simple For Loop in my Open GL ES app :

for (NSValue * value in pointerStorageArray) 
{
    NSLog(@"Freeing Malloced Data");

    free(value);
}

The problem is that the pointerStorageArray contains around 40000 data items (all the data for a 3D object) and therefore the loop takes about a minute to complete.

Is there any way I could speed up the time taken for the loop to complete ?

EDIT

This question is now an illustration of the importance of not coding for 18 hours in a row. Removing the NSLog Statement speeds it up from 5 minutes to 4 seconds ;)

Upvotes: 1

Views: 280

Answers (1)

James Eichele
James Eichele

Reputation: 119194

If the slowdown is actually caused by repeated calls to free(), then you could consider allocating a few larger contiguous blocks of memory, rather than 40000 individual ones.

As always, you should find a way to profile your code to determine exactly where the bottleneck is.

Upvotes: 2

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