'\" te
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.TH processor_bind 2 "13 Mar 2009" "SunOS 5.11" "System Calls"
.SH NAME
processor_bind \- bind LWPs to a processor
.SH SYNOPSIS
.LP
.nf
#include <sys/types.h>
#include <sys/processor.h>
#include <sys/procset.h>

\fBint\fR \fBprocessor_bind\fR(\fBidtype_t\fR \fIidtype\fR, \fBid_t\fR \fIid\fR, \fBprocessorid_t\fR \fIprocessorid\fR,
     \fBprocessorid_t *\fR\fIobind\fR);
.fi

.SH DESCRIPTION
.sp
.LP
The \fBprocessor_bind()\fR function binds the LWP (lightweight process) or set
of LWPs specified by \fIidtype\fR and \fIid\fR to the processor specified by
\fIprocessorid\fR. If \fIobind\fR is not \fINULL\fR, this function also sets
the \fBprocessorid_t\fR variable pointed to by \fIobind\fR to the previous
binding of one of the specified LWPs, or to \fBPBIND_NONE\fR if the selected
LWP was not bound.
.sp
.LP
If \fIidtype\fR is \fBP_PID\fR, the binding affects all LWPs of the process
with process ID (PID) \fIid\fR.
.sp
.LP
If \fIidtype\fR is \fBP_LWPID\fR, the binding affects the LWP of the current
process with LWP ID \fIid\fR.
.sp
.LP
If \fIidtype\fR is \fBP_TASKID\fR, the binding affects all LWPs of all
processes with task ID \fIid\fR.
.sp
.LP
If \fIidtype\fR is \fBP_PROJID\fR, the binding affects all LWPs of all
processes with project ID \fIid\fR.
.sp
.LP
If \fIidtype\fR is \fBP_CTID\fR, the binding affects all LWPs of all processes
with process contract ID \fIid\fR.
.sp
.LP
If \fIidtype\fR is \fBP_ZONEID\fR, the binding affects all LWPs of all
processes with zone ID \fIid\fR.
.sp
.LP
If \fIid\fR is \fBP_MYID\fR, the specified LWP, process, task, or project is
the current one.
.sp
.LP
If \fIprocessorid\fR is \fBPBIND_NONE\fR, the processor bindings of the
specified LWPs are cleared.
.sp
.LP
If  \fIprocessorid\fR is \fBPBIND_QUERY\fR, the processor bindings are not
changed.
.sp
.LP
The {\fBPRIV_PROC_OWNER\fR} privilege must be asserted in the effective set of
the calling process or the real or effective user ID of the calling process
must match the real or effective user ID of the \fBLWP\fRs being bound.  If the
calling process does not have permission to change all of the specified LWPs,
the bindings of the LWPs for which it does have permission will be changed even
though an error is returned.
.sp
.LP
Processor bindings are inherited across \fBfork\fR(2) and \fBexec\fR(2).
.SH RETURN VALUES
.sp
.LP
Upon successful completion, \fB0\fR is returned.  Otherwise, \fB\(mi1\fR is
returned and  \fBerrno\fR is set to indicate the error.
.SH ERRORS
.sp
.LP
The \fBprocessor_bind()\fR function will fail if:
.sp
.ne 2
.mk
.na
\fB\fBEFAULT\fR\fR
.ad
.RS 11n
.rt  
The location pointed to by  \fIobind\fR was not \fINULL\fR and not writable by
the user.
.RE

.sp
.ne 2
.mk
.na
\fB\fBEINVAL\fR\fR
.ad
.RS 11n
.rt  
The specified processor is not on-line, or the \fIidtype\fR argument was not
\fBP_PID\fR, \fBP_LWPID\fR, \fBP_PROJID\fR, \fBP_TASKID\fR, \fBP_CTID\fR, or
\fBP_ZONEID\fR.
.sp
The caller is in a non-global zone, the pools facility is active, and the
processor is not a member of the zone's pool's processor set.
.RE

.sp
.ne 2
.mk
.na
\fB\fBENOTSUP\fR\fR
.ad
.RS 11n
.rt  
Binding a system process to a processor set is not supported.
.RE

.sp
.ne 2
.mk
.na
\fB\fBEPERM\fR\fR
.ad
.RS 11n
.rt  
The {\fBPRIV_PROC_OWNER\fR} privilege is not asserted in the effective set of
the calling process and its real or effective user ID does not match the real
or effective user \fBID\fR of one of the \fBLWP\fRs being bound.
.RE

.sp
.ne 2
.mk
.na
\fB\fBESRCH\fR\fR
.ad
.RS 11n
.rt  
No processes, \fBLWP\fRs, or tasks were found to match the criteria specified
by \fIidtype\fR and  \fIid\fR.
.RE

.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp

.sp
.TS
tab() box;
cw(2.75i) |cw(2.75i) 
lw(2.75i) |lw(2.75i) 
.
ATTRIBUTE TYPEATTRIBUTE VALUE
_
Interface StabilityCommitted
_
MT-LevelAsync-Signal-Safe
.TE

.SH SEE ALSO
.sp
.LP
\fBpooladm\fR(1M), \fBpsradm\fR(1M), \fBpsrinfo\fR(1M), \fBzoneadm\fR(1M),
\fBexec\fR(2), \fBfork\fR(2), \fBp_online\fR(2), \fBpset_bind\fR(2),
\fBsysconf\fR(3C), \fBprocess\fR(4), \fBproject\fR(4), \fBattributes\fR(5),
\fBprivileges\fR(5)