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.\"
.TH PTHREAD_ATTR_GETINHERITSCHED 3C "Mar 23, 2005"
.SH NAME
pthread_attr_getinheritsched, pthread_attr_setinheritsched \- get or set
inheritsched attribute
.SH SYNOPSIS
.LP
.nf
cc -mt [ \fIflag\fR... ] \fIfile\fR... -lpthread [ \fIlibrary\fR... ]
#include <pthread.h>
\fBint\fR \fBpthread_attr_getinheritsched\fR(\fBconst pthread_attr_t *restrict\fR \fIattr\fR,
\fBint *restrict\fR \fIinheritsched\fR);
.fi
.LP
.nf
\fBint\fR \fBpthread_attr_setinheritsched\fR(\fBpthread_attr_t *\fR\fIattr\fR, \fBint\fR \fIinheritsched\fR);
.fi
.SH DESCRIPTION
.sp
.LP
The functions \fBpthread_attr_setinheritsched()\fR and
\fBpthread_attr_getinheritsched()\fR, respectively, set and get the
\fIinheritsched\fR attribute in the \fIattr\fR argument.
.sp
.LP
When the attribute objects are used by \fBpthread_create()\fR, the
\fIinheritsched\fR attribute determines how the other scheduling attributes of
the created thread are to be set:
.sp
.ne 2
.na
\fB\fBPTHREAD_INHERIT_SCHED\fR \fR
.ad
.RS 27n
Specifies that the scheduling policy and associated attributes are to be
inherited from the creating thread, and the scheduling attributes in this
\fIattr\fR argument are to be ignored.
.RE
.sp
.ne 2
.na
\fB\fBPTHREAD_EXPLICIT_SCHED\fR \fR
.ad
.RS 27n
Specifies that the scheduling policy and associated attributes are to be set to
the corresponding values from this attribute object.
.RE
.sp
.LP
The symbols \fBPTHREAD_INHERIT_SCHED\fR and \fBPTHREAD_EXPLICIT_SCHED\fR are
defined in the header \fB<pthread.h>\fR\&.
.SH RETURN VALUES
.sp
.LP
If successful, the \fBpthread_attr_setinheritsched()\fR and
\fBpthread_attr_getinheritsched()\fR functions return \fB0\fR. Otherwise, an
error number is returned to indicate the error.
.SH ERRORS
.sp
.LP
The \fBpthread_attr_setinheritsched()\fR or
\fBpthread_attr_getinheritsched()\fR functions may fail if:
.sp
.ne 2
.na
\fB\fBEINVAL\fR\fR
.ad
.RS 10n
\fIattr\fR or \fIinheritsched\fR is invalid.
.RE
.SH USAGE
.sp
.LP
After these attributes have been set, a thread can be created with the
specified attributes using \fBpthread_create()\fR. Using these routines does
not affect the current running thread.
.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp
.sp
.TS
box;
c | c
l | l .
ATTRIBUTE TYPE ATTRIBUTE VALUE
_
Interface Stability Standard
_
MT-Level MT-Safe
.TE
.SH SEE ALSO
.sp
.LP
\fBpthread_attr_getschedparam\fR(3C), \fBpthread_attr_init\fR(3C),
\fBpthread_attr_setscope\fR(3C), \fBpthread_attr_setschedpolicy\fR(3C),
\fBpthread_create\fR(3C), \fBpthread_setschedparam\fR(3C), \fBattributes\fR(5),
\fBstandards\fR(5)
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