priocntlset(2)                                               priocntlset(2)


   NAME
         priocntlset - generalized process scheduler control

   SYNOPSIS
         #include <sys/types.h>
         #include <sys/procset.h>
         #include <sys/priocntl.h>
         #include <sys/rtpriocntl.h>
         #include <sys/tspriocntl.h>

         long priocntlset(procsett *psp, int cmd, ... /* arg */);

   DESCRIPTION
         priocntlset changes the scheduling properties of running processes.
         priocntlset has the same functions as the priocntl system call, but a
         more general way of specifying the set of processes whose scheduling
         properties are to be changed.

         cmd specifies the function to be performed.  arg is a pointer to a
         structure whose type depends on cmd.  See priocntl(2) for the valid
         values of cmd and the corresponding arg structures.

         psp is a pointer to a procset structure, which priocntlset uses to
         specify the set of processes whose scheduling properties are to be
         changed.

           typedef struct procset {
             idopt    pop;       /* operator connecting left/right sets */
             idtypet  plidtype;  /* left set ID type */
             idt      plid;      /* left set ID */
             idtypet  pridtype;  /* right set ID type */
             idt      prid;      /* right set ID */
           } procsett;

         plidtype and plid specify the ID type and ID of one (``left'') set
         of processes; pridtype and prid specify the ID type and ID of a
         second (``right'') set of processes.  ID types and IDs are specified
         just as for the priocntl system call.  pop specifies the operation
         to be performed on the two sets of processes to get the set of
         processes the system call is to apply to.  The valid values for pop
         and the processes they specify are:

           POPDIFF      set difference: processes in left set and not in
                         right set

           POPAND       set intersection: processes in both left and right
                         sets

           POPOR        set union: processes in either left or right sets or
                         both



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   priocntlset(2)                                               priocntlset(2)


           POPXOR       set exclusive-or: processes in left or right set but
                         not in both

         The following macro, which is defined in procset.h, offers a
         convenient way to initialize a procset structure:

               #define     setprocset(psp, op, ltype, lid, rtype, rid) \
               (psp)->pop       = (op), \
               (psp)->plidtype  = (ltype), \
               (psp)->plid      = (lid), \
               (psp)->pridtype  = (rtype), \
               (psp)->prid      = (rid),

   DIAGNOSTICS
         priocntlset has the same return values and errors as priocntl.

   SEE ALSO
         priocntl(2).

         priocntl(1) in the User's Reference Manual

































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