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author | Igor Pashev <pashev.igor@gmail.com> | 2012-06-24 22:28:35 +0000 |
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committer | Igor Pashev <pashev.igor@gmail.com> | 2012-06-24 22:28:35 +0000 |
commit | 3950ffe2a485479f6561c27364d3d7df5a21d124 (patch) | |
tree | 468c6e14449d1b1e279222ec32f676b0311917d2 /src/lib/libast/comp/atexit.c | |
download | ksh-upstream.tar.gz |
Imported Upstream version 93u+upstream
Diffstat (limited to 'src/lib/libast/comp/atexit.c')
-rw-r--r-- | src/lib/libast/comp/atexit.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/src/lib/libast/comp/atexit.c b/src/lib/libast/comp/atexit.c new file mode 100644 index 0000000..d0df2d5 --- /dev/null +++ b/src/lib/libast/comp/atexit.c @@ -0,0 +1,115 @@ +/*********************************************************************** +* * +* This software is part of the ast package * +* Copyright (c) 1985-2011 AT&T Intellectual Property * +* and is licensed under the * +* Eclipse Public License, Version 1.0 * +* by AT&T Intellectual Property * +* * +* A copy of the License is available at * +* http://www.eclipse.org/org/documents/epl-v10.html * +* (with md5 checksum b35adb5213ca9657e911e9befb180842) * +* * +* Information and Software Systems Research * +* AT&T Research * +* Florham Park NJ * +* * +* Glenn Fowler <gsf@research.att.com> * +* David Korn <dgk@research.att.com> * +* Phong Vo <kpv@research.att.com> * +* * +***********************************************************************/ +#pragma prototyped + +/* + * ANSI C atexit() + * arrange for func to be called LIFO on exit() + */ + +#include <ast.h> + +#if _lib_atexit + +NoN(atexit) + +#else + +#if _lib_onexit || _lib_on_exit + +#if !_lib_onexit +#define onexit on_exit +#endif + +extern int onexit(void(*)(void)); + +int +atexit(void (*func)(void)) +{ + return(onexit(func)); +} + +#else + +struct list +{ + struct list* next; + void (*func)(void); +}; + +static struct list* funclist; + +extern void _exit(int); + +int +atexit(void (*func)(void)) +{ + register struct list* p; + + if (!(p = newof(0, struct list, 1, 0))) return(-1); + p->func = func; + p->next = funclist; + funclist = p; + return(0); +} + +void +_ast_atexit(void) +{ + register struct list* p; + + while (p = funclist) + { + funclist = p->next; + (*p->func)(); + } +} + +#if _std_cleanup + +#if _lib__cleanup +extern void _cleanup(void); +#endif + +void +exit(int code) +{ + _ast_atexit(); +#if _lib__cleanup + _cleanup(); +#endif + _exit(code); +} + +#else + +void +_cleanup(void) +{ + _ast_atexit(); +} + +#endif + +#endif + +#endif |