Arguments

 

start_va_64

   OpenVMS usage:address
   type:         quadword address
   access:       read only
   mechanism:    by value
   The starting virtual address of the pages to be unlocked from the
   working set. The specified virtual address will be rounded down
   to a CPU-specific page boundary.
 

length_64

   OpenVMS usage:byte count
   type:         quadword (unsigned)
   access:       read only
   mechanism:    by value
   Length of the virtual address space to be unlocked from the
   working set. The specified length will be rounded up to a CPU-
   specific page boundary so that it includes all CPU-specific pages
   in the requested range.
 

acmode

   OpenVMS usage:access_mode
   type:         longword (unsigned)
   access:       read only
   mechanism:    by value
   Access mode on behalf of which the request is being made. The
   acmode argument is a longword containing the access mode.

   The $PSLDEF macro in STARLET.MLB and the file PSLDEF.H in
   SYS$STARLET_C.TLB define the following symbols and their values
   for the four access modes:

   Value      Symbolic Name      Access Mode

   0          PSL$C_KERNEL       Kernel
   1          PSL$C_EXEC         Executive
   2          PSL$C_SUPER        Supervisor
   3          PSL$C_USER         User

   The most privileged access mode used is the access mode of the
   caller. To unlock any specified page, the resultant access mode
   must be equal to or more privileged than the access mode of the
   owner of that page.
 

return_va_64

   OpenVMS usage:address
   type:         quadword address
   access:       write only
   mechanism:    by 32- or 64-bit reference
   The lowest process virtual address of the unlocked virtual
   address range. The return_va_64 argument is the 32- or 64-bit
   virtual address of a naturally aligned quadword into which the
   service returns the virtual address.
 

return_length_64

   OpenVMS usage:byte count
   type:         quadword (unsigned)
   access:       write only
   mechanism:    by 32- or 64-bit reference
   The length of the virtual address range unlocked. The
   return_length_64 argument is the 32- or 64-bit virtual address
   of a naturally aligned quadword into which the service returns
   the length of the virtual address range in bytes.