[dpdk-dev] How *rte_zmalloc_socket* ensure that the memory is zero'd ?

[He Peng]

Hi,

In file dpdk/lib/librte_eal/common/rte_malloc.c:

/*
* Allocate memory on default heap.
*/
void *
rte_malloc(const char *type, size_t size, unsigned align)
{
  return rte_malloc_socket(type, size, align, SOCKET_ID_ANY);
}

/*
* Allocate zero'd memory on specified heap.
*/
void *
rte_zmalloc_socket(const char *type, size_t size, unsigned align, int socket)
{
  return rte_malloc_socket(type, size, align, socket);
}

Looks like the *rte_malloc* and *rte_zmalloc_socket* is the same, then, how the latter function ensure the memory allocated by is zeroed?