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[glibc/history.git] / nptl / tst-cond16.c
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1 /* Copyright (C) 2004 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
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 <errno.h>
21 #include <pthread.h>
22 #include <stdbool.h>
23 #include <stdio.h>
24 #include <stdlib.h>
25 #include <unistd.h>
27 pthread_cond_t cv = PTHREAD_COND_INITIALIZER;
28 pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
29 bool n, exiting;
30 FILE *f;
31 int count;
33 void *
34 tf (void *dummy)
36 bool loop = true;
38 while (loop)
40 pthread_mutex_lock (&lock);
41 while (n && !exiting)
42 pthread_cond_wait (&cv, &lock);
43 n = true;
44 pthread_mutex_unlock (&lock);
46 fputs (".", f);
48 pthread_mutex_lock (&lock);
49 n = false;
50 if (exiting)
51 loop = false;
52 #ifdef UNLOCK_AFTER_BROADCAST
53 pthread_cond_broadcast (&cv);
54 pthread_mutex_unlock (&lock);
55 #else
56 pthread_mutex_unlock (&lock);
57 pthread_cond_broadcast (&cv);
58 #endif
61 return NULL;
64 int
65 do_test (void)
67 f = fopen ("/dev/null", "w");
68 if (f == NULL)
70 printf ("couldn't open /dev/null, %m\n");
71 return 1;
74 count = sysconf (_SC_NPROCESSORS_ONLN);
75 if (count <= 0)
76 count = 1;
77 count *= 4;
79 pthread_t th[count];
80 int i, ret;
81 for (i = 0; i < count; ++i)
82 if ((ret = pthread_create (&th[i], NULL, tf, NULL)) != 0)
84 errno = ret;
85 printf ("pthread_create %d failed: %m\n", i);
86 return 1;
89 struct timespec ts = { .tv_sec = 20, .tv_nsec = 0 };
90 while (nanosleep (&ts, &ts) != 0);
92 pthread_mutex_lock (&lock);
93 exiting = true;
94 pthread_mutex_unlock (&lock);
96 for (i = 0; i < count; ++i)
97 pthread_join (th[i], NULL);
99 fclose (f);
100 return 0;
103 #define TEST_FUNCTION do_test ()
104 #define TIMEOUT 40
105 #include "../test-skeleton.c"