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1/* Copyright (C) 2002-2019 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19#include <pthread.h>
20#include <signal.h>
21#include <stdio.h>
22#include <stdlib.h>
23#include <string.h>
24
25
26static pthread_mutex_t m1 = PTHREAD_MUTEX_INITIALIZER;
27static pthread_mutex_t m2 = PTHREAD_MUTEX_INITIALIZER;
28
29static int cntr;
30
31
32static void
33cleanup (void *arg)
34{
35 if (arg != (void *) 42l)
36 cntr = 42;
37 else
38 cntr = 1;
39}
40
41
42static void *
43tf (void *arg)
44{
45 /* Ignore all signals. This must not have any effect on delivering
46 the cancellation signal. */
47 sigset_t ss;
48
49 sigfillset (&ss);
50
51 if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0)
52 {
53 puts ("pthread_sigmask failed");
54 exit (1);
55 }
56
57 pthread_cleanup_push (cleanup, (void *) 42l);
58
59 int err = pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
60 if (err != 0)
61 {
62 printf ("setcanceltype failed: %s\n", strerror (err));
63 exit (1);
64 }
65 /* The following code is not standard compliant: the mutex functions
66 must not be called with asynchronous cancellation enabled. */
67
68 err = pthread_mutex_unlock (&m2);
69 if (err != 0)
70 {
71 printf ("child: mutex_unlock failed: %s\n", strerror (err));
72 exit (1);
73 }
74
75 err = pthread_mutex_lock (&m1);
76 if (err != 0)
77 {
78 printf ("child: 1st mutex_lock failed: %s\n", strerror (err));
79 exit (1);
80 }
81
82 /* We should never come here. */
83
84 pthread_cleanup_pop (0);
85
86 return NULL;
87}
88
89
90static int
91do_test (void)
92{
93 int err;
94 pthread_t th;
95 int result = 0;
96 void *retval;
97
98 /* Get the mutexes. */
99 err = pthread_mutex_lock (&m1);
100 if (err != 0)
101 {
102 printf ("parent: 1st mutex_lock failed: %s\n", strerror (err));
103 return 1;
104 }
105 err = pthread_mutex_lock (&m2);
106 if (err != 0)
107 {
108 printf ("parent: 2nd mutex_lock failed: %s\n", strerror (err));
109 return 1;
110 }
111
112 err = pthread_create (&th, NULL, tf, NULL);
113 if (err != 0)
114 {
115 printf ("create failed: %s\n", strerror (err));
116 return 1;
117 }
118
119 err = pthread_mutex_lock (&m2);
120 if (err != 0)
121 {
122 printf ("parent: 3rd mutex_lock failed: %s\n", strerror (err));
123 return 1;
124 }
125
126 err = pthread_cancel (th);
127 if (err != 0)
128 {
129 printf ("cancel failed: %s\n", strerror (err));
130 return 1;
131 }
132
133 err = pthread_join (th, &retval);
134 if (err != 0)
135 {
136 printf ("join failed: %s\n", strerror (err));
137 return 1;
138 }
139
140 if (retval != PTHREAD_CANCELED)
141 {
142 printf ("wrong return value: %p\n", retval);
143 result = 1;
144 }
145
146 if (cntr == 42)
147 {
148 puts ("cleanup handler called with wrong argument");
149 result = 1;
150 }
151 else if (cntr != 1)
152 {
153 puts ("cleanup handling not called");
154 result = 1;
155 }
156
157 return result;
158}
159
160
161#define TEST_FUNCTION do_test ()
162#include "../test-skeleton.c"
163

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