VMS Help System Services, $ADJWSL  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Adjusts a process's current working set limit by the specified
    number of pages (on VAX systems) or pagelets (on Alpha systems)
    and returns the new value to the caller. The working set limit
    specifies the maximum number of process pages or pagelets that
    can be resident in physical memory.

    On Alpha systems, this service accepts 64-bit addresses.

    Format

      SYS$ADJWSL  [pagcnt] ,[wsetlm]

    C Prototype

      int sys$adjwsl  (int pagcnt, unsigned int *wsetlm);

1 - Arguments

 pagcnt

    OpenVMS usage:longword_signed
    type:         longword (signed)
    access:       read only
    mechanism:    by value
    Signed adjustment value specifying the number of pages (on VAX
    systems) or pagelets (on Alpha systems) to add to (if positive)
    or subtract from (if negative) the current working set limit. The
    pagcnt argument is this signed longword value.

    Note that, on Alpha systems, the specified value is rounded up to
    an even multiple of the CPU-specific page size.

    If pagcnt is not specified or is specified as 0, no adjustment
    is made and the current working set limit is returned in the
    longword specified by the wsetlm argument (if this argument is
    specified).

 wsetlm

    OpenVMS usage:longword_unsigned
    type:         longword (unsigned)
    access:       write only
    mechanism:    by 32- or 64-bit reference (Alpha)
    mechanism:    by 32-bit reference (VAX)
    Value of the working set limit, in pages (on VAX systems) or
    pagelets (on Alpha systems), returned by $ADJWSL. The wsetlm
    argument is the 32-bit address (on VAX systems) or the 32- or
    64-bit address (on Alpha systems) of this longword value. The
    wsetlm argument receives the newly adjusted value if pagcnt is
    specified, and it receives the prior, unadjusted value if pagcnt
    is not specified.