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.Dd November 4, 2017 26.Dt QUICK_EXIT 3 27.Os 28.Sh NAME 29.Nm quick_exit 30.Nd exits a program quickly, running minimal cleanup 31.Sh LIBRARY 32.Lb libc 33.Sh SYNOPSIS 34.In stdlib.h 35.Ft _Noreturn void 36.Fn quick_exit "int status" 37.Sh DESCRIPTION 38The 39.Fn quick_exit 40function exits the program quickly calling any cleanup functions registered 41with 42.Xr at_quick_exit 3 43but not any C++ destructors or cleanup code registered with 44.Xr atexit 3 . 45The 46.Xr stdio 3 47file buffers are not flushed. 48.Pp 49The function 50.Fn quick_exit 51is 52.Em async-signal safe 53when the functions registered with 54.Xr at_quick_exit 3 55are. 56.Sh RETURN VALUES 57The 58.Fn quick_exit 59function does not return. 60.Sh SEE ALSO 61.Xr at_quick_exit 3 , 62.Xr exit 3 63.Sh STANDARDS 64The 65.Fn quick_exit 66function conforms to 67.St -isoC-2011 . 68