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.\" $FreeBSD$ 26.\" 27.Dd February 13, 2003 28.Dt PTHREAD_MULTI_NP 3 29.Os 30.Sh NAME 31.Nm pthread_multi_np , 32.Nm pthread_single_np 33.Nd "switch between multi- and single-threaded scheduling modes" 34.Sh LIBRARY 35.Lb libpthread 36.Lb libthr 37.Sh SYNOPSIS 38.In pthread_np.h 39.Ft int 40.Fn pthread_multi_np void 41.Ft int 42.Fn pthread_single_np void 43.Sh DESCRIPTION 44The 45.Fn pthread_single_np 46function switches the process to a single-threaded mode, i.e., 47suspends all threads except the current. 48The semantics of this function is similar to 49.Xr pthread_suspend_all_np 3 . 50.Pp 51The 52.Fn pthread_multi_np 53function switches the process to a multi-threaded mode. 54The semantics of this function is similar to 55.Xr pthread_resume_all_np 3 . 56.Sh IMPLEMENTATION NOTES 57The 58.Fn pthread_single_np 59function is only available in 60.Lb libpthread . 61This function is not implemented in 62.Lb libthr . 63.Sh RETURN VALUES 64The 65.Fn pthread_multi_np 66and 67.Nm pthread_single_np 68functions always return 0. 69.Sh SEE ALSO 70.Xr pthread_resume_all_np 3 , 71.Xr pthread_suspend_all_np 3 72.Sh AUTHORS 73This manual page was written by 74.An Alexey Zelkin Aq phantom@FreeBSD.org . 75