Fix spurious conform test failures
[glibc.git] / nptl / tst-once3.c
blobf12417fa1aa3066d99dda057a640832b65c03cf8
1 /* Copyright (C) 2002-2015 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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.
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.
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/>. */
19 #include <pthread.h>
20 #include <stdio.h>
21 #include <stdlib.h>
22 #include <time.h>
25 #define N 100
27 static pthread_once_t once = PTHREAD_ONCE_INIT;
29 static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
30 static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;
32 static pthread_barrier_t bar;
34 static int global;
35 static int cl_called;
37 static void
38 once_handler1 (void)
40 if (pthread_mutex_lock (&mut) != 0)
42 puts ("once_handler1: mutex_lock failed");
43 exit (1);
45 puts ("once_handler1: locked");
47 int r = pthread_barrier_wait (&bar);
48 if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD)
50 puts ("once_handler1: barrier_wait failed");
51 exit (1);
54 puts ("once_handler1: going to wait on cond");
56 pthread_cond_wait (&cond, &mut);
58 /* We should never get here. */
59 exit (42);
62 static void
63 once_handler2 (void)
65 global = 1;
69 static void
70 cl (void *arg)
72 cl_called = 1;
76 static void *
77 tf (void *arg)
79 pthread_cleanup_push (cl, NULL)
81 pthread_once (&once, once_handler1);
83 pthread_cleanup_pop (0);
85 /* We should never get here. */
86 puts ("pthread_once in tf returned");
87 exit (1);
91 static int
92 do_test (void)
94 pthread_t th;
96 if (pthread_barrier_init (&bar, NULL, 2) != 0)
98 puts ("barrier_init failed");
99 return 1;
102 if (pthread_create (&th, NULL, tf, NULL) != 0)
104 puts ("first create failed");
105 return 1;
108 int r = pthread_barrier_wait (&bar);
109 if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD)
111 puts ("barrier_wait failed");
112 return 1;
115 if (pthread_mutex_lock (&mut) != 0)
117 puts ("mutex_lock failed");
118 return 1;
120 /* We unlock the mutex so that we catch the case where the pthread_cond_wait
121 call incorrectly resumes and tries to get the mutex. */
122 if (pthread_mutex_unlock (&mut) != 0)
124 puts ("mutex_unlock failed");
125 return 1;
128 /* Cancel the thread. */
129 puts ("going to cancel");
130 if (pthread_cancel (th) != 0)
132 puts ("cancel failed");
133 return 1;
136 void *result;
137 pthread_join (th, &result);
138 if (result != PTHREAD_CANCELED)
140 puts ("join didn't return PTHREAD_CANCELED");
141 return 1;
143 puts ("joined successfully");
145 printf ("once = %d\n", *(int *) &once);
147 if (cl_called != 1)
149 puts ("cleanup handler not called");
150 return 1;
153 pthread_once (&once, once_handler2);
155 if (global != 1)
157 puts ("global still 0");
158 return 1;
161 return 0;
164 #define TEST_FUNCTION do_test ()
165 #define TIMEOUT 4
166 #include "../test-skeleton.c"