In MVS, the prevention of a program from using a resource that is already being used by an interrupted program until the interrupted program is finished using the resource.

• 在IBM的操作系统MVS中,一种保护手段,用于防止某一程序使用被中断的另一程序已占用的资源,直到被中断 的程序结束对该资源的使用为止。