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Re: Performance slowdown using alloc?
From: |
Fabio Mascelloni |
Subject: |
Re: Performance slowdown using alloc? |
Date: |
Sun, 16 Apr 2000 10:45:21 +0200 |
----- Original Message -----
From: "Marcus G. Daniels" <address@hidden>
To: <address@hidden>
Sent: Saturday, April 15, 2000 4:35 AM
Subject: Re: Performance slowdown using alloc?
> You should get the performance back if you use the single computed
> offset instead of the pointer to pointer indirection
Do you mean getting back to
unsigned short *matrix;
, using
matrix=[[self getZone] alloc: matrixDim*matrixDim*sizeof(unsigned short)];
to allocate it and using
int offset=matrixDim*row+col;
matrix[offset];
to access its members?
Fabio.
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