Arguments

 

event

   OpenVMS usage:event_code
   type:         longword (unsigned)
   access:       read only
   mechanism:    by value
   Event code indicating the type of system event for which an AST
   is to be delivered. The event argument is a value indicating
   which type of event is of interest.

   Each event type has a symbolic name. The $SYSEVTDEF macro defines
   the following symbolic names:

   Symbolic Name               Description

   SYSEVT$C_ADD_MEMBER         One or more OpenVMS instances have
                               joined the OpenVMS Galaxy sharing
                               community.
   SYSEVT$C_DEL_MEMBER         One or more OpenVMS instances have
                               left the OpenVMS Galaxy sharing
                               community.
   SYSEVT$C_ADD_ACTIVE_CPU     One or more processors have become
                               active within this OpenVMS instance.
   SYSEVT$C_DEL_ ACTIVE_CPU    One or more processors have become
                               inactive within this OpenVMS
                               instance.
   SYSEVT$C_ADD_CONFIG_CPU     One or more CPUs have been added to
                               the set of available CPUs for this
                               OpenVMS instance.
   SYSEVT$C_DEL_CONFIG_CPU     One or more processors have been
                               removed from this OpenVMS instance.
   SYSEVT$C_TDF_CHANGE         The system's time differential factor
                               has changed.
   SYSEVT$C_CPU_DEALLOCATE     One or more processors have been
                               deallocated from this OpenVMS
                               instance.
 

astadr

   OpenVMS usage:ast_procedure
   type:         procedure value
   access:       call without stack unwinding
   mechanism:    by 32-bit or 64-bit reference
   Notification AST routine to receive control after a change in
   OpenVMS system configuration occurs.
 

astprm

   OpenVMS usage:user_arg
   type:         quadword
   access:       read only
   mechanism:    by value
   The quadword AST parameter to be passed to the AST routine.
 

acmode

   OpenVMS usage:access_mode
   type:         longword (unsigned)
   access:       read only
   mechanism:    by value
   Access mode at which the system event AST is to execute. The
   acmode argument is a longword containing the access mode.

   Each access mode has a symbolic name. The $PSLDEF macro defines
   the following symbols for the four access modes.

   Symbolic Name      Description

   PSL$C_KERNEL       Kernel
   PSL$C_EXEC         Executive
   PSL$C_SUPER        Supervisor
   PSL$C_USER         User

   The value of the access mode is maximized with the access mode of
   the caller.
 

flags

   type:
   access:
   mechanism:    0
   Defined in SYSEVTDEF.

   SYSEVT$M_REPEAT_       When this flag is set, event notification
   NOTIFY                 is repeated.
 

handle

   OpenVMS usage:handle
   type:         quadword (unsigned)
   access:       read/write
   mechanism:    by reference
   The virtual address of a naturally aligned quadword for the event
   handle.