Method and apparatus for hosting a multitasking guest on a host system

A non-transitory machine-readable storage medium storing a computer program for hosting a multitasking guest on a host system, the computer program, when executed on a processing unit, causing the processing unit to perform:

• allocating the guest a periodic execution server and a deferrable execution server, wherein the periodic execution server and the deferrable execution server are associated with a partition of the system;
• assigning event-driven tasks of the guest to the deferrable execution server;
• assigning time-driven tasks of the guest to the periodic execution server;
• assigning a hypervisor of the host system in communication with the deferrable execution server and the periodic execution server to a first priority group of the system;
• assigning the deferrable execution server to a second priority group of the system;
• assigning the periodic execution server to a third priority group of the system;
• and
• maintaining, by a preemptive task scheduler, a descending priority order among the first priority group, the second priority group, and the third priority group while the periodic execution server and the deferrable execution server execute the time-driven tasks and the event-driven tasks concurrently.

An electronic control unit adapted to host a multitasking guest on a host system, the electronic control unit configured to:

• allocate the guest a periodic execution server and a deferrable execution server, wherein the periodic execution server and the deferrable execution server are associated with a partition of the system;
• assign event-driven tasks of the guest to the deferrable execution server;
• assign time-driven tasks of the guest to the periodic execution server;
• assign a hypervisor of the host system in communication with the deferrable execution server and the periodic execution server to a first priority group of the system;
• assign the deferrable execution server to a second priority group of the system;
• assign the periodic execution server to a third priority group of the system;
• and
• maintain a descending priority order among the first priority group, the second priority group, and the third priority group while the periodic execution server and the deferrable execution server execute the time-driven tasks and the event-driven tasks concurrently.