SHARING VIRTUAL FUNCTIONS IN VIRTUAL MEMORY SHARED BETWEEN HETEROGENEOUS PROCESSORS OF COMPUTING PLATFORM

摘要

PROBLEM TO BE SOLVED: To provide a technique for sharing virtual functions in a virtual memory shared between heterogeneous processors of a computing platform.SOLUTION: A computing platform supports sharing of virtual functions between heterogeneous processors. A CPU-side vtable pointer used to access a shared object from the CPU 110 is used to determine a GPU vtable if a GPU-side table exists. A shared non-coherent region, which does not maintain data consistency, is created within a shared virtual memory. The CPU and the GPU side data stored within the shared non-coherent region has a same address as seen from the CPU and the GPU side. A virtual table pointer (vptr) is modified to point to the CPU vtable and GPU vtable stored in the shared virtual memory.SELECTED DRAWING: Figure 7