1.\" 2.\" This file and its contents are supplied under the terms of the 3.\" Common Development and Distribution License ("CDDL"), version 1.0. 4.\" You may only use this file in accordance with the terms of version 5.\" 1.0 of the CDDL. 6.\" 7.\" A full copy of the text of the CDDL should have accompanied this 8.\" source. A copy of the CDDL is also available via the Internet at 9.\" http://www.illumos.org/license/CDDL. 10.\" 11.\" 12.\" Copyright 2016 Joyent, Inc. 13.\" 14.Dd "Mar 26, 2016" 15.Dt QUICK_EXIT 3C 16.Os 17.Sh NAME 18.Nm at_quick_exit , 19.Nm quick_exit 20.Nd terminate a running process with minimal teardown 21.Sh SYNOPSIS 22.In stdlib.h 23.Ft int 24.Fo at_quick_exit 25.Fa "void (*func)(void)" 26.Fc 27.Ft _Noreturn void 28.Fo quick_exit 29.Fa "int status" 30.Fc 31.Sh DESCRIPTION 32The 33.Fn quick_exit 34and 35.Fn at_quick_exit 36functions provide a veneer around 37.Xr _Exit 3C 38that allows for registered functions to be called before terminating. 39Like 40.Xr _Exit 3C , 41standard library termination is not done. 42.Xr atexit 3C 43functions are not called and various standard termination that occurs 44when calling 45.Xr exit 3C 46may not occur. 47.Pp 48Functions that are registered with 49.Fn at_quick_exit 50will be called in reverse order upon calling 51.Fn quick_exit . 52Functions registered with 53.Fn at_quick_exit 54will not be called at any other time. Functions that are registered with 55.Fn at_quick_exit 56should not make use of 57.Xr longjump 3C 58and related functions. 59.Pp 60After calling all registered functions, the 61.Fn quick_exit 62function will terminate the calling program and its exit status will be 63.Fa status . 64.Sh RETURN VALUES 65The 66.Fn quick_exit 67function does not return. 68.Pp 69The 70.Fn at_quick_exit 71function returns 72.Sy 0 73on success. Otherwise, a non-zero error value is returned to indicate 74failure. 75.Sh ERRORS 76The 77.Fn at_quick_exit 78function may fail if: 79.Bl -tag -width Er 80.It Er ENOMEM 81Insufficient storage space is available. 82.El 83.Sh INTERFACE STABILITY 84.Sy Standard 85.Sh MT-LEVEL 86.Sy Safe 87.Sh SEE ALSO 88.Xr _Exit 3C , 89.Xr atexit 3C , 90.Xr exit 3C , 91.Xr attributes 5 , 92.Xr standards 5 93