72 static heap_node* freelist = NULL;  variable
85   freelist = (heap_node*)heap;  in init_heap()
86   freelist->next_node = offset_from_node(list_end);  in init_heap()
87   freelist->len = HEAP_SIZE / sizeof(heap_node);  in init_heap()
104   if (NULL == freelist)  in fallback_malloc()
108   for (p = freelist, prev = 0; p && p != list_end;  in fallback_malloc()
123         freelist = node_from_offset(p->next_node);  in fallback_malloc()
147   for (p = freelist, prev = 0; p && p != list_end;  in fallback_free()
169         freelist = cp;  in fallback_free()
181   cp->next_node = offset_from_node(freelist);  in fallback_free()
182   freelist = cp;  in fallback_free()
189   if (NULL == freelist)  in print_free_list()
192   for (p = freelist, prev = 0; p && p != list_end;  in print_free_list()