priocntlset(2)                   UNIX System V                   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

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




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priocntlset(2)                   UNIX System V                   priocntlset(2)


      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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