This may work on MacOS X. An initial, simple test does yield credible
values.
However, I am not a MacOS X expert. It is unclear which field of the
malloc_statistics_t struct to use and how malloc_zone_statistics with
zone NULL accumulates the stats for all zones.
/Jean Brouwers
#if _MACOSX
#include <malloc/malloc.h>
/* typedef struct malloc_statistics_t {
unsigned blocks_in_use;
size_t size_in_use;
size_t max_size_in_use; -- high water mark of touched memory
size_t size_allocated; -- reserved in memory
} malloc_statistics_t;
*/
size_t hiwm (
size_t since)
{
size_t s;
malloc_statistics_t t;
/* get cummulative (?) stats for all zones */
malloc_zone_statistics(NULL, &t);
s = t.size_allocated; /* or t.max_size_in_use? */
return (s - since);
}
#endif
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