1.\" Copyright (c) 2003 Alexey Zelkin <phantom@FreeBSD.org> 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD: src/share/man/man3/pthread_multi_np.3,v 1.7 2007/10/22 10:08:00 ru Exp $ 26.\" $DragonFly: src/lib/libc_r/man/pthread_multi_np.3,v 1.2 2003/06/17 04:26:48 dillon Exp $ 27.\" 28.Dd July 10, 2009 29.Dt PTHREAD_MULTI_NP 3 30.Os 31.Sh NAME 32.Nm pthread_multi_np , 33.Nm pthread_single_np 34.Nd "switch between multi- and single-threaded scheduling modes" 35.Sh LIBRARY 36.Lb libpthread 37.Sh SYNOPSIS 38.In pthread.h 39.In pthread_np.h 40.Ft int 41.Fn pthread_multi_np void 42.Ft int 43.Fn pthread_single_np void 44.Sh DESCRIPTION 45The 46.Fn pthread_single_np 47function switches the process to a single-threaded mode, i.e., 48suspends all threads except the current. 49The semantics of this function is similar to 50.Xr pthread_suspend_all_np 3 . 51.Pp 52The 53.Fn pthread_multi_np 54function switches the process to a multi-threaded mode. 55The semantics of this function is similar to 56.Xr pthread_resume_all_np 3 . 57.Sh RETURN VALUES 58The 59.Fn pthread_multi_np 60and 61.Nm pthread_single_np 62functions always return 0. 63.Sh SEE ALSO 64.Xr pthread_resume_all_np 3 , 65.Xr pthread_suspend_all_np 3 66.Sh AUTHORS 67This manual page was written by 68.An Alexey Zelkin Aq phantom@FreeBSD.org . 69