1 | /* Copyright (C) 2003-2024 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 <stdio.h> |
20 | #include <stdlib.h> |
21 | #include <unistd.h> |
22 | |
23 | |
24 | static pthread_barrier_t bar; |
25 | |
26 | static int global; |
27 | |
28 | |
29 | static void |
30 | cleanup (void *arg) |
31 | { |
32 | global = 1; |
33 | } |
34 | |
35 | |
36 | static void * |
37 | tf (void *arg) |
38 | { |
39 | /* Enable cancellation, but defer it. */ |
40 | if (pthread_setcancelstate (PTHREAD_CANCEL_ENABLE, NULL) != 0) |
41 | { |
42 | puts (s: "setcancelstate failed" ); |
43 | exit (1); |
44 | } |
45 | if (pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED, NULL) != 0) |
46 | { |
47 | puts (s: "setcanceltype failed" ); |
48 | exit (1); |
49 | } |
50 | |
51 | /* Add cleanup handler. */ |
52 | pthread_cleanup_push (cleanup, NULL); |
53 | |
54 | /* Synchronize with the main thread. */ |
55 | int r = pthread_barrier_wait (barrier: &bar); |
56 | if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD) |
57 | { |
58 | puts (s: "tf: first barrier_wait failed" ); |
59 | exit (1); |
60 | } |
61 | |
62 | /* And again. Once this is done the main thread should have canceled |
63 | this thread. */ |
64 | r = pthread_barrier_wait (barrier: &bar); |
65 | if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD) |
66 | { |
67 | puts (s: "tf: second barrier_wait failed" ); |
68 | exit (1); |
69 | } |
70 | |
71 | /* Remove the cleanup handler without executing it. */ |
72 | pthread_cleanup_pop (0); |
73 | |
74 | /* Now react on the cancellation. */ |
75 | pthread_testcancel (); |
76 | |
77 | /* This call should never return. */ |
78 | return NULL; |
79 | } |
80 | |
81 | |
82 | static int |
83 | do_test (void) |
84 | { |
85 | if (pthread_barrier_init (barrier: &bar, NULL, count: 2) != 0) |
86 | { |
87 | puts (s: "barrier_init failed" ); |
88 | exit (1); |
89 | } |
90 | |
91 | pthread_t th; |
92 | if (pthread_create (newthread: &th, NULL, start_routine: tf, NULL) != 0) |
93 | { |
94 | puts (s: "pthread_create failed" ); |
95 | return 1; |
96 | } |
97 | |
98 | int r = pthread_barrier_wait (barrier: &bar); |
99 | if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD) |
100 | { |
101 | puts (s: "first barrier_wait failed" ); |
102 | exit (1); |
103 | } |
104 | |
105 | if (pthread_cancel (th: th) != 0) |
106 | { |
107 | puts (s: "pthread_cancel failed" ); |
108 | return 1; |
109 | } |
110 | |
111 | r = pthread_barrier_wait (barrier: &bar); |
112 | if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD) |
113 | { |
114 | puts (s: "second barrier_wait failed" ); |
115 | exit (1); |
116 | } |
117 | |
118 | void *result; |
119 | if (pthread_join (th: th, thread_return: &result) != 0) |
120 | { |
121 | puts (s: "pthread_join failed" ); |
122 | return 1; |
123 | } |
124 | |
125 | if (result != PTHREAD_CANCELED) |
126 | { |
127 | puts (s: "thread was not canceled" ); |
128 | exit (1); |
129 | } |
130 | |
131 | if (global != 0) |
132 | { |
133 | puts (s: "cancellation handler has been called" ); |
134 | exit (1); |
135 | } |
136 | |
137 | return 0; |
138 | } |
139 | |
140 | #define TEST_FUNCTION do_test () |
141 | #include "../test-skeleton.c" |
142 | |