MEMB memory allocation in Contiki

Question

In Contiki I declared a linked list like this:

MEMB(recv_memb, struct record, MAX_RECORD);
LIST(recv_list);

After using the linked list I free the allocated memory like this:

for(n = list_head(recv_list); n != NULL; n = n->next)
{     
    list_remove(recv_list,n); 
    memb_free(&recv_memb,n); 
}

but after reaching the MAX_RECORD the node restarts, How do I free the memory for another 30 records?

I'm simulating a networking scenario in Contiki Cooja simulator and the code is a combination of Contiki programming and C.

Answer 1

One problem (not sure if this will solve your issue completely...) is that you access the n->next pointer in the statement for(n = list_head(recv_list); n != NULL; n = n->next) after the element is already removed from the list and it's memory freed.

Try this instead:

void *next;
for(n = list_head(recv_list); n != NULL; n = next)
{     
    next = n->next;
    list_remove(recv_list,n); 
    memb_free(&recv_memb,n); 
}