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1 | .\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) |
| 2 | .\" | |
| 3 | .\" Permission is granted to make and distribute verbatim copies of this | |
| 4 | .\" manual provided the copyright notice and this permission notice are | |
| 5 | .\" preserved on all copies. | |
| 6 | .\" | |
| 7 | .\" Permission is granted to copy and distribute modified versions of this | |
| 8 | .\" manual under the conditions for verbatim copying, provided that the | |
| 9 | .\" entire resulting derived work is distributed under the terms of a | |
| 10 | .\" permission notice identical to this one. | |
| c13182ef | 11 | .\" |
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12 | .\" Since the Linux kernel and libraries are constantly changing, this |
| 13 | .\" manual page may be incorrect or out-of-date. The author(s) assume no | |
| 14 | .\" responsibility for errors or omissions, or for damages resulting from | |
| 15 | .\" the use of the information contained herein. The author(s) may not | |
| 16 | .\" have taken the same level of care in the production of this manual, | |
| 17 | .\" which is licensed free of charge, as they might when working | |
| 18 | .\" professionally. | |
| c13182ef | 19 | .\" |
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20 | .\" Formatted or processed versions of this manual, if unaccompanied by |
| 21 | .\" the source, must acknowledge the copyright and authors of this work. | |
| 22 | .\" | |
| 23 | .\" References consulted: | |
| 24 | .\" Linux libc source code | |
| 25 | .\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) | |
| 26 | .\" 386BSD man pages | |
| 27 | .\" Modified 1993-04-02, David Metcalfe | |
| 28 | .\" Modified 1993-07-25, Rik Faith (faith@cs.unc.edu) | |
| 29 | .TH ON_EXIT 3 1993-04-02 "GNU" "Linux Programmer's Manual" | |
| 30 | .SH NAME | |
| 027df6e0 | 31 | on_exit \- register a function to be called at normal process termination |
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32 | .SH SYNOPSIS |
| 33 | .nf | |
| 34 | .B #include <stdlib.h> | |
| 35 | .sp | |
| 36 | .BI "int on_exit(void (*" function ")(int , void *), void *" arg ); | |
| 37 | .fi | |
| 38 | .SH DESCRIPTION | |
| 87ed9800 | 39 | The \fBon_exit\fP() function registers the given \fIfunction\fP to be |
| 027df6e0 | 40 | called at normal process termination, whether via |
| fea681da | 41 | .BR exit (3) |
| 87ed9800 | 42 | or via return from the program's \fImain\fP(). |
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43 | The \fIfunction\fP is passed the argument to |
| 44 | .BR exit (3) | |
| 87ed9800 | 45 | and the \fIarg\fP argument from \fBon_exit\fP(). |
| fea681da | 46 | .SH "RETURN VALUE" |
| 87ed9800 | 47 | The \fBon_exit\fP() function returns the value 0 if successful; otherwise |
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48 | it returns a non-zero value. |
| 49 | .SH "CONFORMING TO" | |
| 50 | This function comes from SunOS 4, but is also present in | |
| c13182ef | 51 | libc4, libc5 and glibc. |
| 68e1685c | 52 | It no longer occurs in Solaris (SunOS 5). |
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53 | Avoid this function, and use the standard |
| 54 | .BR atexit (3) | |
| 55 | instead. | |
| 56 | .SH "SEE ALSO" | |
| 57 | .BR _exit (3), | |
| 58 | .BR atexit (3), | |
| 59 | .BR exit (3) |