Or, you call some function that was in the middle of the manipulation of the global data structure and you call the same function from the signal handler.
或者，调用了正在处理全局数据结构的某个函数，而在信号处理器中又调用了同一个函数。
2
Listing 20 shows a new version of the function that takes advantage of several list data structures and the various list-manipulation functions described earlier.