Efficient sharing of memory between applications running...

Details Efficient sharing of memory between applications running... Efficient sharing of memory between applications running...

2008-10-21

2010-10-05

Portka, Gary J (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Shared memory area

C719S319000

Reexamination Certificate

active

07809896

ABSTRACT:
A system, method and computer program product for efficient sharing of memory between first and second applications running under first and second operating systems on a shared hardware system. The hardware system runs a hypervisor that supports concurrent execution of the first and second operating systems, and further includes a region of shared memory managed on behalf of the first and second applications. Techniques are used to avoid preemption when the first application is accessing the shared memory region. In this way, the second application will not be unduly delayed when attempting to access the shared memory region due to delays stemming from the first application's access of the shared memory region. This is especially advantageous when the second application and operating system are adapted for real-time processing. Additional benefits can be obtained by taking steps to minimize memory access faults.

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