Thread Subject: mex memory leak

Hello all,
I am trying my first bit of mex code, but somehow produce a
memory leak - could you please help?


plhs[0]=mxCreateDoubleMatrix(arr_si,1,mxREAL);
all_values = mxGetPr(plhs[0]);

/* Read from file */
while(read_from_file_func(&val))
{
     all_values[n] = val;
}

mxSetPr(plhs[0],all_values);

?? Do I use mxGetPr & mxSetPr correctly?
Thansk,
flo

"Florian " <f.pappenberger@NOSPAMlancater.ac.uk> wrote in
message <fbh18d$6vc$1@fred.mathworks.com>...
> Hello all,
> I am trying my first bit of mex code, but somehow
produce a
> memory leak - could you please help?
>
>
> plhs[0]=mxCreateDoubleMatrix(arr_si,1,mxREAL);
> all_values = mxGetPr(plhs[0]);
>
> /* Read from file */
> while(read_from_file_func(&val))
> {
> all_values[n] = val;
> }
>
> mxSetPr(plhs[0],all_values);
>
> ?? Do I use mxGetPr & mxSetPr correctly?
> Thansk,
> flo

There is no need to use mxSetPr in this situation. Your
variable all_values is a pointer to the double matrix
plhs[0] so setting all_values[n] is setting the values for
plhs[0]. That might be causing the memory leak.

One other problem you may have is that you don't appear to
be increasing n so it looks like you are setting the same
value over and over again in your while loop.

Dan