1.\" Copyright (c) 2011 David Chisnall 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 November 4, 2017 28.Dt QUICK_EXIT 3 29.Os 30.Sh NAME 31.Nm quick_exit 32.Nd exits a program quickly, running minimal cleanup 33.Sh LIBRARY 34.Lb libc 35.Sh SYNOPSIS 36.In stdlib.h 37.Ft _Noreturn void 38.Fn quick_exit "int status" 39.Sh DESCRIPTION 40The 41.Fn quick_exit 42function exits the program quickly calling any cleanup functions registered 43with 44.Xr at_quick_exit 3 45but not any C++ destructors or cleanup code registered with 46.Xr atexit 3 . 47The 48.Xr stdio 3 49file buffers are not flushed. 50.Pp 51The function 52.Fn quick_exit 53is 54.Em async-signal safe 55when the functions registered with 56.Xr at_quick_exit 3 57are. 58.Sh RETURN VALUES 59The 60.Fn quick_exit 61function does not return. 62.Sh SEE ALSO 63.Xr at_quick_exit 3 , 64.Xr exit 3 65.Sh STANDARDS 66The 67.Fn quick_exit 68function conforms to 69.St -isoC-2011 . 70