1 /* $NetBSD: h_atexit.c,v 1.1 2010/07/16 15:42:53 jmmv Exp $ */
2
3 /*
4 * Copyright (c) 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 /*
30 * Program to test atexit(3) and __cxa_atexit()/__cxa_finalize().
31 *
32 * Written by Jason R. Thorpe, February 2003.
33 * Public domain.
34 */
35
36 #include <sys/cdefs.h>
37 __COPYRIGHT("@(#) Copyright (c) 2008\
38 The NetBSD Foundation, inc. All rights reserved.");
39 __RCSID("$NetBSD: h_atexit.c,v 1.1 2010/07/16 15:42:53 jmmv Exp $");
40
41 #include <stdio.h>
42 #include <stdlib.h>
43 #include <signal.h>
44 #include <string.h>
45 #include <unistd.h>
46
47 extern int __cxa_atexit(void (*func)(void *), void *, void *);
48 extern void __cxa_finalize(void *);
49
50 #ifdef __FreeBSD__
51 /*
52 * See comments in ../../lib/libc/stdlib/h_atexit.c about the deviation
53 * between FreeBSD and NetBSD with this helper program
54 */
55 static void *dso_handle_1 = (void *)1;
56 static void *dso_handle_2 = (void *)2;
57 static void *dso_handle_3 = (void *)3;
58 #else
59 static int dso_handle_1;
60 static int dso_handle_2;
61 static int dso_handle_3;
62 #endif
63
64 static int arg_1;
65 static int arg_2;
66 static int arg_3;
67
68 static int exiting_state;
69
70 #define ASSERT(expr) \
71 do { \
72 if ((expr) == 0) { \
73 write(STDERR_FILENO, __func__, strlen(__func__)); \
74 write(STDERR_FILENO, ": ", 2); \
75 write(STDERR_FILENO, __STRING(expr), \
76 strlen(__STRING(expr))); \
77 write(STDERR_FILENO, "\n", 1); \
78 my_abort(); \
79 } \
80 } while (/*CONSTCOND*/0)
81
82 #define SUCCESS() \
83 do { \
84 write(STDOUT_FILENO, __func__, strlen(__func__)); \
85 write(STDOUT_FILENO, "\n", 1); \
86 } while (/*CONSTCOND*/0)
87
88 static void
my_abort(void)89 my_abort(void)
90 {
91
92 kill(getpid(), SIGABRT);
93 /* NOTREACHED */
94 }
95
96 static void
cxa_handler_5(void * arg)97 cxa_handler_5(void *arg)
98 {
99 static int cxa_handler_5_called;
100
101 ASSERT(arg == (void *)&arg_1);
102 ASSERT(cxa_handler_5_called == 0);
103 ASSERT(exiting_state == 5);
104
105 exiting_state--;
106 cxa_handler_5_called = 1;
107 SUCCESS();
108 }
109
110 static void
cxa_handler_4(void * arg)111 cxa_handler_4(void *arg)
112 {
113 static int cxa_handler_4_called;
114
115 ASSERT(arg == (void *)&arg_1);
116 ASSERT(cxa_handler_4_called == 0);
117 ASSERT(exiting_state == 4);
118
119 exiting_state--;
120 cxa_handler_4_called = 1;
121 SUCCESS();
122 }
123
124 static void
cxa_handler_3(void * arg)125 cxa_handler_3(void *arg)
126 {
127 static int cxa_handler_3_called;
128
129 ASSERT(arg == (void *)&arg_2);
130 ASSERT(cxa_handler_3_called == 0);
131 ASSERT(exiting_state == 3);
132
133 exiting_state--;
134 cxa_handler_3_called = 1;
135 SUCCESS();
136 }
137
138 static void
cxa_handler_2(void * arg)139 cxa_handler_2(void *arg)
140 {
141 static int cxa_handler_2_called;
142
143 ASSERT(arg == (void *)&arg_3);
144 ASSERT(cxa_handler_2_called == 0);
145 ASSERT(exiting_state == 2);
146
147 exiting_state--;
148 cxa_handler_2_called = 1;
149 SUCCESS();
150 }
151
152 static void
normal_handler_1(void)153 normal_handler_1(void)
154 {
155 static int normal_handler_1_called;
156
157 ASSERT(normal_handler_1_called == 0);
158 ASSERT(exiting_state == 1);
159
160 exiting_state--;
161 normal_handler_1_called = 1;
162 SUCCESS();
163 }
164
165 static void
normal_handler_0(void)166 normal_handler_0(void)
167 {
168 static int normal_handler_0_called;
169
170 ASSERT(normal_handler_0_called == 0);
171 ASSERT(exiting_state == 0);
172
173 normal_handler_0_called = 1;
174 SUCCESS();
175 }
176
177 int
main(int argc,char * argv[])178 main(int argc, char *argv[])
179 {
180
181 exiting_state = 5;
182
183 #ifdef __FreeBSD__
184 ASSERT(0 == atexit(normal_handler_0));
185 ASSERT(0 == atexit(normal_handler_1));
186 ASSERT(0 == __cxa_atexit(cxa_handler_4, &arg_1, dso_handle_1));
187 ASSERT(0 == __cxa_atexit(cxa_handler_5, &arg_1, dso_handle_1));
188 ASSERT(0 == __cxa_atexit(cxa_handler_3, &arg_2, dso_handle_2));
189 ASSERT(0 == __cxa_atexit(cxa_handler_2, &arg_3, dso_handle_3));
190
191 __cxa_finalize(dso_handle_1);
192 __cxa_finalize(dso_handle_2);
193 #else
194 ASSERT(0 == __cxa_atexit(cxa_handler_4, &arg_1, &dso_handle_1));
195 ASSERT(0 == __cxa_atexit(cxa_handler_5, &arg_1, &dso_handle_1));
196 ASSERT(0 == __cxa_atexit(cxa_handler_3, &arg_2, &dso_handle_2));
197 ASSERT(0 == __cxa_atexit(cxa_handler_2, &arg_3, &dso_handle_3));
198
199 __cxa_finalize(&dso_handle_1);
200 __cxa_finalize(&dso_handle_2);
201 #endif
202 exit(0);
203 }
204