'\" te
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.TH thr_getprio 3C "1 Apr 2008" "SunOS 5.11" "Standard C Library Functions"
.SH NAME
thr_getprio, thr_setprio \- access dynamic thread scheduling
.SH SYNOPSIS
.LP
.nf
cc -mt [ \fIflag\fR... ] \fIfile\fR...[ \fIlibrary\fR... ]
#include <thread.h> 

\fBint\fR \fBthr_setprio\fR(\fBthread_t\fR \fItarget_thread\fR, \fBint\fR \fIpriority\fR);
.fi

.LP
.nf
\fBint\fR \fBthr_getprio\fR(\fBthread_t\fR \fItarget_thread\fR, \fBint *\fR\fIpriority\fR);
.fi

.SH DESCRIPTION
.sp
.LP
The \fBthr_setprio()\fR function sets the scheduling priority for the thread
specified by target_thread within the current process to the value given by
priority.
.sp
.LP
The \fBthr_getprio()\fR function stores the current priority for the thread
specified by \fItarget_thread\fR in the location pointed to by \fIpriority\fR.
.sp
.LP
If the \fBthr_setprio()\fR function fails, the scheduling priority of the
target thread is not changed.
.sp
.LP
See \fBpriocntl\fR(2), \fBpthread_setschedprio\fR(3C), and
\fBsched_setparam\fR(3C).
.SH RETURN VALUES
.sp
.LP
If successful, the \fBthr_getprio()\fR and \fBthr_setprio()\fR functions return
\fB0\fR. Otherwise, an error number is returned to indicate the error.
.SH ERRORS
.sp
.LP
The \fBthr_getprio()\fR and \fBthr_setprio()\fR functions will fail if:
.sp
.ne 2
.mk
.na
\fB\fBESRCH\fR\fR
.ad
.RS 9n
.rt  
The value specified by \fItarget_thread\fR does not refer to an existing
thread.
.RE

.sp
.LP
The  \fBthr_setprio()\fR function will fail if:
.sp
.ne 2
.mk
.na
\fB\fBEINVAL\fR\fR
.ad
.RS 10n
.rt  
The value of \fIpriority\fR is invalid for the scheduling policy of the
specified thread.
.RE

.sp
.ne 2
.mk
.na
\fB\fBEPERM\fR\fR
.ad
.RS 10n
.rt  
The caller does not have the appropriate permission to set the priority to the
value specified.
.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
_
MT-LevelMT-Safe
.TE

.SH SEE ALSO
.sp
.LP
\fBpriocntl\fR(2), \fBpthread_setschedprio\fR(3C), \fBsched_setparam\fR(3C),
\fBthr_create\fR(3C), \fBthr_suspend\fR(3C), \fBthr_yield\fR(3C),
\fBattributes\fR(5), \fBstandards\fR(5)