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Diffstat (limited to 'newlib/libc/stdlib/atexit.c')
-rw-r--r-- | newlib/libc/stdlib/atexit.c | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/newlib/libc/stdlib/atexit.c b/newlib/libc/stdlib/atexit.c deleted file mode 100644 index 88cdd23..0000000 --- a/newlib/libc/stdlib/atexit.c +++ /dev/null @@ -1,80 +0,0 @@ -/* - * Copyright (c) 1990 Regents of the University of California. - * All rights reserved. - * - * %sccs.include.redist.c% - */ - -/* -FUNCTION -<<atexit>>---request execution of functions at program exit - -INDEX - atexit - -ANSI_SYNOPSIS - #include <stdlib.h> - int atexit (void (*<[function]>)(void)); - -TRAD_SYNOPSIS - #include <stdlib.h> - int atexit ((<[function]>) - void (*<[function]>)(); - -DESCRIPTION -You can use <<atexit>> to enroll functions in a list of functions that -will be called when your program terminates normally. The argument is -a pointer to a user-defined function (which must not require arguments and -must not return a result). - -The functions are kept in a LIFO stack; that is, the last function -enrolled by <<atexit>> will be the first to execute when your program -exits. - -There is no built-in limit to the number of functions you can enroll -in this list; however, after every group of 32 functions is enrolled, -<<atexit>> will call <<malloc>> to get space for the next part of the -list. The initial list of 32 functions is statically allocated, so -you can always count on at least that many slots available. - -RETURNS -<<atexit>> returns <<0>> if it succeeds in enrolling your function, -<<-1>> if it fails (possible only if no space was available for -<<malloc>> to extend the list of functions). - -PORTABILITY -<<atexit>> is required by the ANSI standard, which also specifies that -implementations must support enrolling at least 32 functions. - -Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>, -<<lseek>>, <<read>>, <<sbrk>>, <<write>>. -*/ - -#include <stddef.h> -#include <stdlib.h> -#include <reent.h> - -/* - * Register a function to be performed at exit. - */ - -int -_DEFUN (atexit, - (fn), - _VOID _EXFUN ((*fn), (_VOID))) -{ - register struct _atexit *p; - - if ((p = _REENT->_atexit) == NULL) - _REENT->_atexit = p = &_REENT->_atexit0; - if (p->_ind >= _ATEXIT_SIZE) - { - if ((p = (struct _atexit *) malloc (sizeof *p)) == NULL) - return -1; - p->_ind = 0; - p->_next = _REENT->_atexit; - _REENT->_atexit = p; - } - p->_fns[p->_ind++] = fn; - return 0; -} |