Memory region tracking similar to malloc_stats?

[Joel Sherrill]

Phil Torre wrote:
> 
> Is there a simple way to access the current amount of space remaining
> in a region?  Something like malloc_stats would be great, but I don't
> actually need the allocation history so much as the current free
> space (so as to watch for get_segment/return_segment leaks).
> It looks like the right thing to do is to walk the heap blocks like
> _Heap_Allocate() does, but I'll save myself some fumbling around if
> this work has already been done.  Thanks...

How about this routine? :)


/*
 *  Find amount of free heap remaining
 */

size_t malloc_free_space( void )

It is based on the rtems_region_get_information()
call.  It can return the following info:

/*
 *  Information block returned by _Heap_Get_information
 */

typedef struct {
  unsigned32   free_blocks;
  unsigned32   free_size;
  unsigned32   used_blocks;
  unsigned32   used_size;
} Heap_Information_block;

> 
> --
> 
> =====================================================================
> Phil Torre                               phone: 425-820-6363 x234
> Design Engineer                          email: ptorre at zetron.com
> Switching Systems Group                    fax: 425-820-7031
> Zetron, Inc.                               web: http://www.zetron.com

-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel at OARcorp.com                 On-Line Applications Research
Ask me about RTEMS: a free RTOS  Huntsville AL 35805
   Support Available             (256) 722-9985