Memory allocated?

[hansaaa]

Hi, I have a pretty big std::vector<matrix>, where matrix is a custom class defined by me. I would like to know how much memory has been allocated to that vector at a certain point in time. Is there any way of doing this in c++?

Or is my only shot, taking a look at the task monitor of windows/unix/whatever at execution time to estimate this?

Thanks! :)

C :)

[Aceix]

OP wrote:

Or is my only shot, taking a look at the task monitor of windows/unix/whatever at execution time to estimate this?

That will give you memory usage of the process, and not the vector only.
Have you tried the sizeof() operator?

Aceix.

[hansaaa]

 That will give you memory usage of the process, and not the vector only.

yep, I am aware of that. However, It is pretty much the only "big fish" in my tank, so I WOULD be able to at least get a ROUGH estimate of the std::vector.

Have you tried the sizeof() operator?

my std::vector, in this case, contains 125970 matrix instances, where matrix is:

struct matrix{
	std::vector<avector> vectors;
};

and "avector" is:

struct avector{
	std::vector<double> doubles;
};

So, with 125970 matrices, sizeof(matrices) returns 12, which does seem a bit small. or do I need to multiply this by 125970, I.e. the num matrices in the vector?

I am not exactly sure how to interpret/read the result of sizeof()