Share of virtual functions in the virtual memory that is shared between the heterogeneous processor computing platforms

摘要

PROBLEM TO BE SOLVED: To provide a technique for sharing a virtual function in virtual memory shared between the heterogeneous processors of a calculation platform.SOLUTION: A CPU-side vtable pointer used in accessing a shared object 131 from a CPU 110 is used for determining GPU_vtable in the case where a GPU-side table exists. A shared non-coherent area in which data consistency is not maintained is generated in a shared virtual memory. The CPU- and GPU-side data stored in the shared non-coherent area have the same address like the one referenced from the CPU and GPU sides. The content of the CPU-side data differs from that of the GPU-side data because a shared virtual memory 130 does not maintain consistency during run-time. A vptr is altered so as to designate the CPU_vtable and GPU_vtable stored in the shared virtual memory 130.