74 static heap_node* freelist = NULL;  variable
87   freelist = (heap_node*)heap;  in init_heap()
88   freelist->next_node = offset_from_node(list_end);  in init_heap()
89   freelist->len = HEAP_SIZE / sizeof(heap_node);  in init_heap()
106   if (NULL == freelist)  in fallback_malloc()
110   for (p = freelist, prev = 0; p && p != list_end;  in fallback_malloc()
125         freelist = node_from_offset(p->next_node);  in fallback_malloc()
148   for (p = freelist, prev = 0; p && p != list_end;  in fallback_free()
168         freelist = cp;  in fallback_free()
179   cp->next_node = offset_from_node(freelist);  in fallback_free()
180   freelist = cp;  in fallback_free()
187   if (NULL == freelist)  in print_free_list()
190   for (p = freelist, prev = 0; p && p != list_end;  in print_free_list()