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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /stdlib/exit.c
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initial import
Diffstat (limited to 'stdlib/exit.c')
-rw-r--r--stdlib/exit.c70
1 files changed, 70 insertions, 0 deletions
diff --git a/stdlib/exit.c b/stdlib/exit.c
new file mode 100644
index 0000000000..4f33a25cc4
--- /dev/null
+++ b/stdlib/exit.c
@@ -0,0 +1,70 @@
+/* Copyright (C) 1991, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include "exit.h"
+
+#ifdef HAVE_GNU_LD
+#include "set-hooks.h"
+DEFINE_HOOK (__libc_atexit, (void))
+#endif
+
+
+/* Call all functions registered with `atexit' and `on_exit',
+ in the reverse of the order in which they were registered
+ perform stdio cleanup, and terminate program execution with STATUS. */
+void
+DEFUN(exit, (status), int status)
+{
+ register CONST struct exit_function_list *l;
+
+ for (l = __exit_funcs; l != NULL; l = l->next)
+ {
+ register size_t i = l->idx;
+ while (i-- > 0)
+ {
+ CONST struct exit_function *CONST f = &l->fns[i];
+ switch (f->flavor)
+ {
+ case ef_free:
+ break;
+ case ef_on:
+ (*f->func.on.fn)(status, f->func.on.arg);
+ break;
+ case ef_at:
+ (*f->func.at)();
+ break;
+ }
+ }
+ }
+
+#ifdef HAVE_GNU_LD
+ RUN_HOOK (__libc_atexit, ());
+#else
+ {
+ extern void EXFUN(_cleanup, (NOARGS));
+ _cleanup();
+ }
+#endif
+
+ _exit(status);
+}
+