The operating system scheduler determines which thread gets control of the mutex next-typically, the reader thread that has waited the longest gets to read the data first.
操作系统调度程序决定哪个线程获得对互斥锁的控制权—通常，等待时间最长的读线程先读取数据。
3
They say hypertext allows"the reader to engage the author for control of the writing space."