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 locked. 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 locked. 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 associated with the pages to be locked. 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. For the $LCKPAG_64 service to complete successfully, the
   resultant access mode must be equal to or more privileged than
   the access mode already associated with the pages to be locked.
 

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 pages locked in memory.
   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 32- or 64-bit virtual address of a naturally aligned quadword
   into which the service returns the length of the virtual address
   range locked in bytes.