Example of creating a memory object with a guard area

The following example creates a 3-megabyte memory object with a 2-megabyte guard area. The guard area is at the high end of the memory object:

IARV64 REQUEST=GETSTOR,                                  +
        SEGMENTS=NUM_SEG,                                +
        USERTKN=USER_TOKEN,                              +
        GUARDSIZE=GUARDPAGES,                            +
        GUARDLOC=HIGH,                                   +
        ORIGIN=VIRT64_ADDR

The following example increases the size of the guard area by the specified amount.

IARV64 REQUEST=CHANGEGUARD,                              +
        CONVERT=FROMGUARD,                               +
        MEMOBJSTART=VIRT64_ADDR,                         +
        CONVERTSIZE=SEGMENT_SIZE