1 | /* Copyright (C) 2002-2024 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <pthread.h> |
19 | #include <signal.h> |
20 | #include <stdio.h> |
21 | #include <stdlib.h> |
22 | #include <string.h> |
23 | |
24 | |
25 | static pthread_mutex_t m1 = PTHREAD_MUTEX_INITIALIZER; |
26 | static pthread_mutex_t m2 = PTHREAD_MUTEX_INITIALIZER; |
27 | |
28 | static int cntr; |
29 | |
30 | |
31 | static void |
32 | cleanup (void *arg) |
33 | { |
34 | if (arg != (void *) 42l) |
35 | cntr = 42; |
36 | else |
37 | cntr = 1; |
38 | } |
39 | |
40 | |
41 | static void * |
42 | tf (void *arg) |
43 | { |
44 | /* Ignore all signals. This must not have any effect on delivering |
45 | the cancellation signal. */ |
46 | sigset_t ss; |
47 | |
48 | sigfillset (&ss); |
49 | |
50 | if (pthread_sigmask (SIG_BLOCK, newmask: &ss, NULL) != 0) |
51 | { |
52 | puts (s: "pthread_sigmask failed" ); |
53 | exit (1); |
54 | } |
55 | |
56 | pthread_cleanup_push (cleanup, (void *) 42l); |
57 | |
58 | int err = pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, NULL); |
59 | if (err != 0) |
60 | { |
61 | printf (format: "setcanceltype failed: %s\n" , strerror (errnum: err)); |
62 | exit (1); |
63 | } |
64 | /* The following code is not standard compliant: the mutex functions |
65 | must not be called with asynchronous cancellation enabled. */ |
66 | |
67 | err = pthread_mutex_unlock (mutex: &m2); |
68 | if (err != 0) |
69 | { |
70 | printf (format: "child: mutex_unlock failed: %s\n" , strerror (errnum: err)); |
71 | exit (1); |
72 | } |
73 | |
74 | err = pthread_mutex_lock (mutex: &m1); |
75 | if (err != 0) |
76 | { |
77 | printf (format: "child: 1st mutex_lock failed: %s\n" , strerror (errnum: err)); |
78 | exit (1); |
79 | } |
80 | |
81 | /* We should never come here. */ |
82 | |
83 | pthread_cleanup_pop (0); |
84 | |
85 | return NULL; |
86 | } |
87 | |
88 | |
89 | static int |
90 | do_test (void) |
91 | { |
92 | int err; |
93 | pthread_t th; |
94 | int result = 0; |
95 | void *retval; |
96 | |
97 | /* Get the mutexes. */ |
98 | err = pthread_mutex_lock (mutex: &m1); |
99 | if (err != 0) |
100 | { |
101 | printf (format: "parent: 1st mutex_lock failed: %s\n" , strerror (errnum: err)); |
102 | return 1; |
103 | } |
104 | err = pthread_mutex_lock (mutex: &m2); |
105 | if (err != 0) |
106 | { |
107 | printf (format: "parent: 2nd mutex_lock failed: %s\n" , strerror (errnum: err)); |
108 | return 1; |
109 | } |
110 | |
111 | err = pthread_create (newthread: &th, NULL, start_routine: tf, NULL); |
112 | if (err != 0) |
113 | { |
114 | printf (format: "create failed: %s\n" , strerror (errnum: err)); |
115 | return 1; |
116 | } |
117 | |
118 | err = pthread_mutex_lock (mutex: &m2); |
119 | if (err != 0) |
120 | { |
121 | printf (format: "parent: 3rd mutex_lock failed: %s\n" , strerror (errnum: err)); |
122 | return 1; |
123 | } |
124 | |
125 | err = pthread_cancel (th: th); |
126 | if (err != 0) |
127 | { |
128 | printf (format: "cancel failed: %s\n" , strerror (errnum: err)); |
129 | return 1; |
130 | } |
131 | |
132 | err = pthread_join (th: th, thread_return: &retval); |
133 | if (err != 0) |
134 | { |
135 | printf (format: "join failed: %s\n" , strerror (errnum: err)); |
136 | return 1; |
137 | } |
138 | |
139 | if (retval != PTHREAD_CANCELED) |
140 | { |
141 | printf (format: "wrong return value: %p\n" , retval); |
142 | result = 1; |
143 | } |
144 | |
145 | if (cntr == 42) |
146 | { |
147 | puts (s: "cleanup handler called with wrong argument" ); |
148 | result = 1; |
149 | } |
150 | else if (cntr != 1) |
151 | { |
152 | puts (s: "cleanup handling not called" ); |
153 | result = 1; |
154 | } |
155 | |
156 | return result; |
157 | } |
158 | |
159 | |
160 | #define TEST_FUNCTION do_test () |
161 | #include "../test-skeleton.c" |
162 | |