.\" Copyright (c) 2005 Robert N. M. Watson
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.\" $FreeBSD$
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.Dd June 11, 2005
.Os
.Dt LIBTHR 3
.Sh NAME
.Nm libthr
.Nd "alternative POSIX threads library"
.Sh LIBRARY
.Lb libthr
.Sh SYNOPSIS
.In pthread.h
.Sh DESCRIPTION
The
.Nm
library provides an alternative 1:1 implementation of the
.Xr pthread 3
library interfaces for application threading.
While applications may be linked directly against
.Nm ,
system administrators are offered maximum flexibility by linking against
.Xr pthread 3 ,
as they can then use
.Xr libmap.conf 5
to select the threading implementation on a per-application basis.
.Pp
.Nm
has been optimized for use by applications expecting system scope thread
semantics, and can provide significant performance improvements.
.Sh SEE ALSO
.Xr pthread 3 ,
.Sh AUTHORS
.An -nosplit
.Nm
was originally created by
.An "Jeff Roberson" Aq jeff@FreeBSD.org ,
and enhanced by
.An "Jonathan Mini" Aq mini@FreeBSD.org
and
.An "Mike Makonnen" Aq mtm@FreeBSD.org .
It has been substantially rewritten and optimized by
.An "David Xu" Aq davidxu@FreeBSD.org .
.An -split
.Sh BUGS
As
.Nm
is an optimized system scope thread library, it does not offer support for
scheduling threads as process scope threads.