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(procset_t *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 {
             idop_t    p_op;       /* operator connecting left/right sets */
             idtype_t  p_lidtype;  /* left set ID type */
             id_t      p_lid;      /* left set ID */
             idtype_t  p_ridtype;  /* right set ID type */
             id_t      p_rid;      /* right set ID */
           } procset_t;

         p_lidtype and p_lid specify the ID type and ID of one (``left'') set
         of processes; p_ridtype and p_rid 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.  p_op 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 p_op
         and the processes they specify are:

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

           POP_AND       set intersection: processes in both left and right
                         sets

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



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   priocntlset(2)                                               priocntlset(2)


           POP_XOR       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)->p_op       = (op), \
               (psp)->p_lidtype  = (ltype), \
               (psp)->p_lid      = (lid), \
               (psp)->p_ridtype  = (rtype), \
               (psp)->p_rid      = (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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