With the offset the method address of appointing the data of shared storage

摘要

This invention regards the 2nd method of referring to the 1st address of the data which becomes 1st method and the extraction object which refer to the 1st value of the data which becomes the housing object. The particular data is shared with the implementor and the user. As for 1st method, (p-VAprod) the step which calculates equal aforementioned 1st value (however, as for p there is a virtual address space of the aforementioned implementor, VAprod SGL (Scatter Gather List) has with the step which is housed it is in the virtual address space of the aforementioned implementor), the aforementioned 1st value as an address of the aforementioned data. Optionally, 1st method has the step which houses the data in location p. As for 2nd method, (p-VAprod) equal 2nd value SGL (Scatter Gather List) from the step which is extracted (however, as for p there is a virtual address space of the aforementioned implementor, as for VAprod it is), the step which calculates the aforementioned 1st address which is in the virtual address space of the aforementioned user (VAcons+ aforementioned 2nd value) as (however, as for VAcons, it is SGL of the virtual address space of the aforementioned user user address) it possesses in the virtual address space of the aforementioned implementor. It possesses the step which extracts the data where optionally, 2nd method is indicated by the aforementioned 1st address. Because of this, when the above-mentioned method is together utilized, assuming, that it possessed the virtual address space where the user differs from the implementor as for the implementor the user and communicating the data become possible.