c41041bc2f
1999-12-17 Andreas Jaeger <aj@suse.de> * stdlib/Versions: Export __cxa_atexit and __cxa_finalize. 1999-12-16 Mark Mitchell <mark@codesourcery.com> * stdlib/Makefile (routines): Add cxa_atexit and cxa_finalize. * stdlib/exit.h (flavor): Add ef_cxa. (exit_function): Add cxa variant. * stdlib/exit.c (exit): Handle ef_cxa exit functions. * stdlib/cxa_atexit.c: New file. * stdlib/cxa_finalize.c: New file.
45 lines
1.5 KiB
C
45 lines
1.5 KiB
C
/* Copyright (C) 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <assert.h>
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#include <stdlib.h>
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#include <atomicity.h>
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#include "exit.h"
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/* If D is non-NULL, call all functions registered with `__cxa_atexit'
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with the same dso handle. Otherwise, if D is NULL, do nothing. */
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void
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__cxa_finalize (void *d)
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{
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struct exit_function_list *funcs;
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if (!d)
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return;
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for (funcs = __exit_funcs; funcs; funcs = funcs->next)
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{
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struct exit_function *f;
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for (f = &funcs->fns[funcs->idx - 1]; f >= &funcs->fns[0]; --f)
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if (d == f->func.cxa.dso_handle
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/* We don't want to run this cleanup more than once. */
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&& compare_and_swap (&f->flavor, ef_cxa, ef_free))
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(*f->func.cxa.fn) (f->func.cxa.arg);
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}
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}
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