'\" te
.\" Copyright (c) 2008, Sun Microsystems, Inc.  All Rights Reserved.
.\" Copyright 1989 AT&T
.\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License").  You may not use this file except in compliance with the License.
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.TH priocntlset 2 "1 Apr 2008" "SunOS 5.11" "System Calls"
.SH NAME
priocntlset \- generalized process scheduler control
.SH SYNOPSIS
.LP
.nf
#include <sys/types.h>
#include <sys/procset.h>
#include <sys/priocntl.h>
#include <sys/rtpriocntl.h>
#include <sys/tspriocntl.h>
#include <sys/iapriocntl.h>
#include <sys/fsspriocntl.h>
#include <sys/fxpriocntl.h>

\fBlong\fR \fBpriocntlset\fR(\fBprocset_t *\fR\fIpsp\fR, \fBint\fR \fIcmd\fR, \fB/*\fR \fIarg\fR */ ...);
.fi

.SH DESCRIPTION
.sp
.LP
The \fBpriocntlset()\fR function changes the scheduling properties of running
processes. \fBpriocntlset()\fR has the same functions as the \fBpriocntl()\fR
function, but a more general way of specifying the set of processes whose
scheduling properties are to be changed.
.sp
.LP
\fIcmd\fR specifies the function to be performed. \fIarg\fR is a pointer to a
structure whose type depends on \fIcmd\fR. See \fBpriocntl\fR(2) for the valid
values of \fIcmd\fR and the corresponding \fIarg\fR structures.
.sp
.LP
\fIpsp\fR is a pointer to a \fBprocset\fR structure, which \fBpriocntlset()\fR
uses to specify the set of processes whose scheduling properties are to be
changed. The \fBprocset\fR structure contains the following members:
.sp
.in +2
.nf
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 */
.fi
.in -2

.sp
.LP
The \fBp_lidtype\fR and \fBp_lid\fR members specify the \fBID\fR type and
\fBID\fR of one ("left") set of processes; the \fBp_ridtype\fR and \fBp_rid\fR
members specify the \fBID\fR type and \fBID\fR of a second ("right") set of
processes. \fBID\fR types and \fBID\fRs are specified just as for the
\fBpriocntl()\fR function. The \fBp_op\fR member specifies the operation to be
performed on the two sets of processes to get the set of processes the function
is to apply to. The valid values for \fBp_op\fR and the processes they specify
are:
.sp
.ne 2
.mk
.na
\fB\fBPOP_DIFF\fR\fR
.ad
.RS 12n
.rt  
Set difference: processes in left set and not in right set.
.RE

.sp
.ne 2
.mk
.na
\fB\fBPOP_AND\fR\fR
.ad
.RS 12n
.rt  
Set intersection: processes in both left and right sets.
.RE

.sp
.ne 2
.mk
.na
\fB\fBPOP_OR\fR\fR
.ad
.RS 12n
.rt  
Set union: processes in either left or right sets or both.
.RE

.sp
.ne 2
.mk
.na
\fB\fBPOP_XOR\fR\fR
.ad
.RS 12n
.rt  
Set exclusive-or: processes in left or right set but not in both.
.RE

.sp
.LP
The following macro, which is defined in <\fBprocset.h\fR>, offers a convenient
way to initialize a \fBprocset\fR structure:
.sp
.in +2
.nf
#define  setprocset(psp, op, ltype, lid, rtype, rid) \e
(psp)->p_op       = (op), \e
(psp)->p_lidtype  = (ltype), \e
(psp)->p_lid      = (lid), \e
(psp)->p_ridtype  = (rtype), \e
(psp)->p_rid      = (rid),
.fi
.in -2

.SH RETURN VALUES
.sp
.LP
Unless otherwise noted above, \fBpriocntlset()\fR returns \fB0\fR on success.
Otherwise, it returns \fB\(mi1\fR and sets \fBerrno\fR to indicate the error.
.SH ERRORS
.sp
.LP
The \fBpriocntlset()\fR function will fail if:
.sp
.ne 2
.mk
.na
\fB\fBEAGAIN\fR\fR
.ad
.RS 10n
.rt  
An attempt to change the class of a process failed because of insufficient
resources other than memory (for example, class-specific kernel data
structures).
.RE

.sp
.ne 2
.mk
.na
\fB\fBEFAULT\fR\fR
.ad
.RS 10n
.rt  
One of the arguments points to an illegal address.
.RE

.sp
.ne 2
.mk
.na
\fB\fBEINVAL\fR\fR
.ad
.RS 10n
.rt  
The argument \fIcmd\fR was invalid, an invalid or unconfigured class was
specified, or one of the parameters specified was invalid.
.RE

.sp
.ne 2
.mk
.na
\fB\fBENOMEM\fR\fR
.ad
.RS 10n
.rt  
An attempt to change the class of a process failed because of insufficient
memory.
.RE

.sp
.ne 2
.mk
.na
\fB\fBEPERM\fR\fR
.ad
.RS 10n
.rt  
The {\fBPRIV_PROC_PRIOCNTL\fR} privilege is not asserted in the effective set
of the calling LWP.
.sp
The calling LWP does not have sufficient privileges to affect the target LWP.
.RE

.sp
.ne 2
.mk
.na
\fB\fBERANGE\fR\fR
.ad
.RS 10n
.rt  
The requested time quantum is out of range.
.RE

.sp
.ne 2
.mk
.na
\fB\fBESRCH\fR\fR
.ad
.RS 10n
.rt  
None of the specified processes exist.
.RE

.SH SEE ALSO
.sp
.LP
\fBpriocntl\fR(1), \fBpriocntl\fR(2)