Function to call registered exit functions of new C++ ABI.

stdlib/cxa_finalize.c

@@ -0,0 +1,44 @@
+/* Copyright (C) 1999 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <assert.h>
+#include <stdlib.h>
+#include <atomicity.h>
+#include "exit.h"
+
+/* If D is non-NULL, call all functions registered with `__cxa_atexit'
+   with the same dso handle.  Otherwise, if D is NULL, do nothing.  */
+void
+__cxa_finalize (void *d)
+{
+  struct exit_function_list *funcs;
+
+  if (!d)
+    return;
+
+  for (funcs = __exit_funcs; funcs; funcs = funcs->next)
+    {
+      struct exit_function *f;
+
+      for (f = &funcs->fns[funcs->idx - 1]; f >= &funcs->fns[0]; --f)
+	if (d == f->func.cxa.dso_handle
+	    /* We don't want to run this cleanup more than once.  */
+	    && compare_and_swap (&f->flavor, ef_cxa, ef_free))
+	  (*f->func.cxa.fn) (f->func.cxa.arg);
+    }
+}