头指针 meaning in Chinese

head pointer

To retrieve an iterator for the set of hash keys , the implementation briefly synchronizes to make sure the head pointers for each chain are current
去迭代器中检索一组hash键的时候，实现就简单地使用同步来保证每个链的头指针是当前值。
In the absence of locking , the implementation must be prepared to deal with stale or inconsistent values of any variables it uses , such as the list head pointer and the fields of the
如果不使用锁定，那么实现必须有能力处理它用到的所有变量的过时的或者不一致的值，比如说列表头指针和
Retrieval operations proceed by first finding the head pointer for the desired bucket which is done without locking , so it could be stale , and traversing the bucket chain without acquiring the lock for that bucket
检索操作首先为目标bucket查找头指针（是在不锁定的情况下完成的，所以说可能是过时的），然后在不获取bucket锁的情况下遍历bucket链。
This means that elements cannot be added to or removed from the middle or end of the hash chain - elements can only be added at the beginning , and removal involves cloning all or part of the chain and updating the list head pointer
这就意味着不能将元素添加到hash链的中间或末尾，或者从hash链的中间或末尾删除元素而只能从hash链的开头添加元素，并且删除操作包括克隆整个链或链的一部分并更新列表的头指针。