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[glibc/history.git] / nptl / tst-once3.c
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1 /* Copyright (C) 2002, 2003, 2005 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, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
20 #include <pthread.h>
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <time.h>
26 #define N 100
28 static pthread_once_t once = PTHREAD_ONCE_INIT;
30 static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
31 static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;
33 static pthread_barrier_t bar;
35 static int global;
36 static int cl_called;
38 static void
39 once_handler1 (void)
41 if (pthread_mutex_lock (&mut) != 0)
43 puts ("once_handler1: mutex_lock failed");
44 exit (1);
46 puts ("once_handler1: locked");
48 int r = pthread_barrier_wait (&bar);
49 if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD)
51 puts ("once_handler1: barrier_wait failed");
52 exit (1);
55 puts ("once_handler1: going to wait on cond");
57 pthread_cond_wait (&cond, &mut);
59 /* We should never get here. */
60 exit (42);
63 static void
64 once_handler2 (void)
66 global = 1;
70 static void
71 cl (void *arg)
73 cl_called = 1;
77 static void *
78 tf (void *arg)
80 pthread_cleanup_push (cl, NULL)
82 pthread_once (&once, once_handler1);
84 pthread_cleanup_pop (0);
86 /* We should never get here. */
87 puts ("pthread_once in tf returned");
88 exit (1);
92 static int
93 do_test (void)
95 pthread_t th;
97 if (pthread_barrier_init (&bar, NULL, 2) != 0)
99 puts ("barrier_init failed");
100 return 1;
103 if (pthread_create (&th, NULL, tf, NULL) != 0)
105 puts ("first create failed");
106 return 1;
109 int r = pthread_barrier_wait (&bar);
110 if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD)
112 puts ("barrier_wait failed");
113 return 1;
116 if (pthread_mutex_lock (&mut) != 0)
118 puts ("mutex_lock failed");
119 return 1;
121 /* We unlock the mutex so that we catch the case where the pthread_cond_wait
122 call incorrectly resumes and tries to get the mutex. */
123 if (pthread_mutex_unlock (&mut) != 0)
125 puts ("mutex_unlock failed");
126 return 1;
129 /* Cancel the thread. */
130 puts ("going to cancel");
131 if (pthread_cancel (th) != 0)
133 puts ("cancel failed");
134 return 1;
137 void *result;
138 pthread_join (th, &result);
139 if (result != PTHREAD_CANCELED)
141 puts ("join didn't return PTHREAD_CANCELED");
142 return 1;
144 puts ("joined successfully");
146 printf ("once = %d\n", *(int *) &once);
148 if (cl_called != 1)
150 puts ("cleanup handler not called");
151 return 1;
154 pthread_once (&once, once_handler2);
156 if (global != 1)
158 puts ("global still 0");
159 return 1;
162 return 0;
165 #define TEST_FUNCTION do_test ()
166 #define TIMEOUT 4
167 #include "../test-skeleton.c"