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/* $NetBSD: h_atexit.c,v 1.1 2010/07/16 15:42:53 jmmv Exp $ */
/*
* Copyright (c) 2008 The NetBSD Foundation, Inc.
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* Program to test atexit(3) and __cxa_atexit()/__cxa_finalize().
*
* Written by Jason R. Thorpe, February 2003.
* Public domain.
*/
#include <sys/cdefs.h>
__COPYRIGHT("@(#) Copyright (c) 2008\
The NetBSD Foundation, inc. All rights reserved.");
__RCSID("$NetBSD: h_atexit.c,v 1.1 2010/07/16 15:42:53 jmmv Exp $");
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <string.h>
#include <unistd.h>
extern int __cxa_atexit(void (*func)(void *), void *, void *);
extern void __cxa_finalize(void *);
#ifdef __FreeBSD__
/*
* See comments in ../../lib/libc/stdlib/h_atexit.c about the deviation
* between FreeBSD and NetBSD with this helper program
*/
static void *dso_handle_1 = (void *)1;
static void *dso_handle_2 = (void *)2;
static void *dso_handle_3 = (void *)3;
#else
static int dso_handle_1;
static int dso_handle_2;
static int dso_handle_3;
#endif
static int arg_1;
static int arg_2;
static int arg_3;
static int exiting_state;
#define ASSERT(expr) \
do { \
if ((expr) == 0) { \
write(STDERR_FILENO, __func__, strlen(__func__)); \
write(STDERR_FILENO, ": ", 2); \
write(STDERR_FILENO, __STRING(expr), \
strlen(__STRING(expr))); \
write(STDERR_FILENO, "\n", 1); \
my_abort(); \
} \
} while (/*CONSTCOND*/0)
#define SUCCESS() \
do { \
write(STDOUT_FILENO, __func__, strlen(__func__)); \
write(STDOUT_FILENO, "\n", 1); \
} while (/*CONSTCOND*/0)
static void
my_abort(void)
{
kill(getpid(), SIGABRT);
/* NOTREACHED */
}
static void
cxa_handler_5(void *arg)
{
static int cxa_handler_5_called;
ASSERT(arg == (void *)&arg_1);
ASSERT(cxa_handler_5_called == 0);
ASSERT(exiting_state == 5);
exiting_state--;
cxa_handler_5_called = 1;
SUCCESS();
}
static void
cxa_handler_4(void *arg)
{
static int cxa_handler_4_called;
ASSERT(arg == (void *)&arg_1);
ASSERT(cxa_handler_4_called == 0);
ASSERT(exiting_state == 4);
exiting_state--;
cxa_handler_4_called = 1;
SUCCESS();
}
static void
cxa_handler_3(void *arg)
{
static int cxa_handler_3_called;
ASSERT(arg == (void *)&arg_2);
ASSERT(cxa_handler_3_called == 0);
ASSERT(exiting_state == 3);
exiting_state--;
cxa_handler_3_called = 1;
SUCCESS();
}
static void
cxa_handler_2(void *arg)
{
static int cxa_handler_2_called;
ASSERT(arg == (void *)&arg_3);
ASSERT(cxa_handler_2_called == 0);
ASSERT(exiting_state == 2);
exiting_state--;
cxa_handler_2_called = 1;
SUCCESS();
}
static void
normal_handler_1(void)
{
static int normal_handler_1_called;
ASSERT(normal_handler_1_called == 0);
ASSERT(exiting_state == 1);
exiting_state--;
normal_handler_1_called = 1;
SUCCESS();
}
static void
normal_handler_0(void)
{
static int normal_handler_0_called;
ASSERT(normal_handler_0_called == 0);
ASSERT(exiting_state == 0);
normal_handler_0_called = 1;
SUCCESS();
}
int
main(int argc, char *argv[])
{
exiting_state = 5;
#ifdef __FreeBSD__
ASSERT(0 == atexit(normal_handler_0));
ASSERT(0 == atexit(normal_handler_1));
ASSERT(0 == __cxa_atexit(cxa_handler_4, &arg_1, dso_handle_1));
ASSERT(0 == __cxa_atexit(cxa_handler_5, &arg_1, dso_handle_1));
ASSERT(0 == __cxa_atexit(cxa_handler_3, &arg_2, dso_handle_2));
ASSERT(0 == __cxa_atexit(cxa_handler_2, &arg_3, dso_handle_3));
__cxa_finalize(dso_handle_1);
__cxa_finalize(dso_handle_2);
#else
ASSERT(0 == __cxa_atexit(cxa_handler_4, &arg_1, &dso_handle_1));
ASSERT(0 == __cxa_atexit(cxa_handler_5, &arg_1, &dso_handle_1));
ASSERT(0 == __cxa_atexit(cxa_handler_3, &arg_2, &dso_handle_2));
ASSERT(0 == __cxa_atexit(cxa_handler_2, &arg_3, &dso_handle_3));
__cxa_finalize(&dso_handle_1);
__cxa_finalize(&dso_handle_2);
#endif
exit(0);
}
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