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/*
* Copyright (c) 2002 Marius Strobl
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <stdlib.h>
/*
* The __cxa_atexit() function and friends are needed for full (IA64) C++ ABI
* compatibility but FreeBSD doesn't have implemented them, yet. In addition
* to the classic atexit() it is not only used to register functions to be
* called at program exit but also to call them (C++ destructors in that case)
* when a shared object is unloaded. For the later to work the dynamic linker
* assigns a unique dynamic shared object handle to every shared object while
* a handle of NULL represents a main program. When __cxa_finalize() is called
* with a specific (non-NULL) handle as an argument all functions registered
* via __cxa_atexit() and having the same handle are called.
* The best we can do here to emulate that behaviour until FreeBSD supports
* this is to register the functions via atexit(). While this certainly is a
* bad hack it seems to work, even the current dynamic linker is assigning
* the handles. I didn't see a function getting registered with an argument
* so far.
*/
int
__cxa_atexit(void (*fn)(), void *arg, void *handle)
{
return (handle ? atexit(fn) : 0);
}
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