Im reading the MVS Extended Addressability Guide for z/OS. In the chapter Using Access Registers, is a small section titled "Obtaining Storage Outside the Primary Address Space"
They way I interpreted this section - A Sever Address Space Could provide its SPACE Token to Other User Address Spaces (clients). These User Address Spaces could then use the SPACE Token to retrieve the ALET of te Server Address Space. The User Address Space Issues a STORAGE OBTAIN with the ALET Parameter. I dont understand, which address space has the Acquired storage allocated? Is the storage shared between the two address spaces ? The paragraphs in this section of "Using Extended Addressability" dont seem to identify which Adress Space actually owns the storage. After The User Program has issued the STORAGE OBTAIN with the ALET, it seems to me the example is missing a SAC instruction when it accesss the storage. If the User address space space terminates without issuing STORAGE RELEASE, will the Server Address Space have addressability to the storage area ? Do I understand this correctly ? Has anyone anyone used this technique ? This seesm to me to be an integrity exposuer ? I welcome Your Comments Paul D'Angelo ---------------------------
