1.\" Copyright (c) 1998 HD Associates, Inc. 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.Dd March 12, 1998 26.Dt SCHED_YIELD 2 27.Os 28.Sh NAME 29.Nm sched_yield 30.Nd yield processor 31.Sh LIBRARY 32.Lb libc 33.Sh SYNOPSIS 34.In sched.h 35.Ft int 36.Fn sched_yield void 37.Sh DESCRIPTION 38The 39.Fn sched_yield 40system call forces the running process to relinquish the processor until it 41again becomes the head of its process list. 42It takes no arguments. 43.Sh RETURN VALUES 44.Rv -std sched_yield 45.Sh ERRORS 46On failure 47.Va errno 48will be set to the corresponding value: 49.Bl -tag -width Er 50.It Bq Er ENOSYS 51The system is not configured to support this functionality. 52.El 53.Sh STANDARDS 54The 55.Fn sched_yield 56system call conforms to 57.St -p1003.1b-93 . 58