.\" $OpenBSD: pthread_single_np.3,v 1.4 2007/05/31 19:19:37 jmc Exp $
.\" David Leonard <d@openbsd.org>, 1999. Public domain.
.Dd $Mdocdate: May 31 2007 $
.Dt PTHREAD_SINGLE_NP 3
.Os
.Sh NAME
.Nm pthread_single_np ,
.Nm pthread_multi_np
.Nd switch thread scheduling mode
.Sh SYNOPSIS
.Fd #include <pthread.h>
.Fd #include <pthread_np.h>
.Ft int
.Fn pthread_single_np void
.Ft int
.Fn pthread_multi_np void
.Sh DESCRIPTION
The
.Fn pthread_single_np
function causes the process to
enter single-threaded (non-POSIX) scheduling mode.
.Pp
The
.Fn pthread_multi_np
function causes the process to
return to multi-threaded scheduling mode.
.Sh RETURN VALUES
The
.Fn pthread_single_np
and
.Fn pthread_multi_np
functions return zero on success, or an error number on failure.
.Sh SEE ALSO
.Xr pthreads 3
.Sh STANDARDS
The
.Fn pthread_single_np
and
.Fn pthread_multi_np
functions are non-portable and may not be supported with the above
semantics on other POSIX systems.