Re: Memory allocation using g_malloc

[Tristan Van Berkom <tristan van berkom gmail com>]

3saul wrote:

> I need a little help with memory allocation. What I'm wanting to do is create
> a multi dimensional array that contains a list of file names from a specific
> directory. So it needs to be something like this
>
> int numfiles = 20;
>
> g_malloc (myArray [numfiles] [512]);
>
> Is this close to correct? I'm getting a segfault
>  

The above code is perfectly safe.

I am ofcourse assuming that "int myArray[][]" is already allocated and that
the integer value at: &myArray[20][512] holds the amount of memory you
want to allocate in bytes.

I would also recommend you trap the returned allocated memory segment :)

Note that if you are segfaulting; my assumptions are probably wrong and
you are probably looking for something more like:

/* g_malloc() is used exactly the same as good old malloc(), only it 
uses the glib slab */
gchar *myArray = g_malloc (sizeof (gchar) * 20 * 512);

At this point; you want to break out that dusty C bible in the corner 
and review
the pointer arithmetic section, otherwise you have more segfaults ahead.

Cheers,
                                   -Tristan