Copyright (c) 2016 The FreeBSD Foundation, Inc.
All rights reserved.

This documentation was written by
Konstantin Belousov <kib@FreeBSD.org> under sponsorship
from the FreeBSD Foundation.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.

$FreeBSD: releng/11.0/lib/libc/sys/thr_exit.2 301171 2016-06-01 21:58:13Z jilles $

.Dd June 1, 2016 .Dt THR_EXIT 2 .Os .Sh NAME .Nm thr_exit .Nd terminate current thread .Sh LIBRARY .Lb libc .Sh SYNOPSIS n sys/thr.h .Ft void .Fn thr_exit "long *state" .Sh DESCRIPTION f -symbolic This function is intended for implementing threading. Normal applications should call .Xr pthread_exit 3 instead. .Ef

p The .Fn thr_exit system call terminates the current kernel-scheduled thread.

p If the .Fa state argument is not .Dv NULL , the location pointed to by the argument is updated with an arbitrary non-zero value, and an .Xr _umtx_op 2 .Dv UMTX_OP_WAKE operation is consequently performed on the location.

p Attempts to terminate the last thread in the process are silently ignored. Use .Xr _exit 2 syscall to terminate the process. .Sh RETURN VALUES The function does not return a value. A return from the function indicates that the calling thread was the last one in the process. .Sh SEE ALSO .Xr _exit 2 , .Xr thr_kill 2 , .Xr thr_kill2 2 , .Xr thr_new 2 , .Xr thr_self 2 , .Xr thr_set_name 2 , .Xr _umtx_op 2 , .Xr pthread_exit 3 .Sh STANDARDS The .Fn thr_exit system call is non-standard and is used by .Lb libthr to implement .St -p1003.1-2001 .Xr pthread 3 functionality.