1 .\" Hey Emacs! This file is -*- nroff -*- source.
3 .\" This manpage is Copyright (C) 1992 Drew Eckhardt;
4 .\" 1993 Michael Haardt, Ian Jackson.
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20 .\" which is licensed free of charge, as they might when working
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26 .\" Modified Wed Jul 21 23:02:38 1993 by Rik Faith <faith@cs.unc.edu>
27 .\" Modified 2001-11-17, aeb
29 .TH _EXIT 2 2010-09-20 "Linux" "Linux Programmer's Manual"
31 _exit, _Exit \- terminate the calling process
33 .B #include <unistd.h>
35 .BI "void _exit(int " status );
37 .B #include <stdlib.h>
39 .BI "void _Exit(int " status );
42 Feature Test Macro Requirements for glibc (see
43 .BR feature_test_macros (7)):
49 _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE ||
50 _POSIX_C_SOURCE\ >=\ 200112L;
58 terminates the calling process "immediately".
59 Any open file descriptors
60 belonging to the process are closed; any children of the process are
61 inherited by process 1,
63 and the process's parent is sent a
69 is returned to the parent process as the process's exit status, and
70 can be collected using one of the
79 These functions do not return.
81 SVr4, POSIX.1-2001, 4.3BSD.
84 was introduced by C99.
86 For a discussion on the effects of an exit, the transmission of
87 exit status, zombie processes, signals sent, etc., see
95 functions registered with
100 standard I/O buffers and removes temporary files created with
102 is implementation-dependent.
105 does close open file descriptors, and this may cause an unknown delay,
106 waiting for pending output to finish.
107 If the delay is undesired,
108 it may be useful to call functions like
112 Whether any pending I/O is canceled, and which pending I/O may be
115 is implementation-dependent.
117 In glibc up to version 2.3, the
119 wrapper function invoked the kernel system call of the same name.
120 Since glibc 2.3, the wrapper function invokes
122 in order to terminate all of the threads in a process.