Use of a warning track interruption facility by a program

摘要

A program (e.g., an operating system) is provided a warning that it has a grace period in which to perform a function, such as cleanup (e.g., complete, stop and/or move a dispatchable unit). The program is being warned, in one example, that it is losing access to its shared resources. For instance, in a virtual environment, a guest program is warned that it is about to lose its central processing unit resources, and therefore, it is to perform a function, such as cleanup.

主权项

1. A computer program product for facilitating processing in a computing environment, said computer program product comprising:
a non-transitory computer readable storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising:
obtaining by a program an indication of a warning track facility installed within the computing environment, the warning track facility to provide to the program a warning track grace period to perform a function;initiating, by the program based on obtaining the indication that the warning track facility is installed, registration of the program for the warning track facility, the registration comprising an unsolicited registration request indicating that the program understands a protocol of the warning track facility and intends to participate in the warning track facility;receiving by the program a warning track notification indicating the warning track grace period has begun; andbased on the warning track notification, at least initiating by the program the function within the warning track grace period.