[Insight-developers] Empty FixedArray destructor: Performancehit using gcc (times 2)

[Tom Vercauteren]

Hi Sean,

> I'm afraid I haven't followed this thread very closely, but... this
> memory that is not aligned as you'd like, how was it allocated?
> malloc()?  new?  Or is it an instance variable in a class/struct?

As shown in the small piece of code, here is how the memory is allocated:

typedef itk::FixedArray<double,2> ArrayType;
ArrayType * vec = new ArrayType[nelements+8];

Note that in the real-life setup, memory allocation is done through
the itk::Image::Allocate() method which does something very similar.

Tom