* sysdeps/unix/sysv/linux/powerpc/powerpc64/bits/local_lim.h:
[glibc.git] / nptl / tst-cond18.c
blob9fd81d29888b006e7b4bd985ede4bb7e6bd502c2
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 <fcntl.h>
22 #include <pthread.h>
23 #include <stdbool.h>
24 #include <stdlib.h>
25 #include <stdio.h>
26 #include <unistd.h>
28 pthread_cond_t cv = PTHREAD_COND_INITIALIZER;
29 pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
30 bool exiting;
31 int fd, count, spins, nn;
33 void *
34 tf (void *id)
36 pthread_mutex_lock (&lock);
38 if ((long) id == 0)
40 while (!exiting)
42 if ((spins++ % 1000) == 0)
43 write (fd, ".", 1);
44 pthread_mutex_unlock (&lock);
46 pthread_mutex_lock (&lock);
47 int njobs = rand () % (count + 1);
48 nn = njobs;
49 if ((rand () % 30) == 0)
50 pthread_cond_broadcast (&cv);
51 else
52 while (njobs--)
53 pthread_cond_signal (&cv);
56 pthread_cond_broadcast (&cv);
58 else
60 while (!exiting)
62 while (!nn && !exiting)
63 pthread_cond_wait (&cv, &lock);
64 --nn;
65 pthread_mutex_unlock (&lock);
67 pthread_mutex_lock (&lock);
71 pthread_mutex_unlock (&lock);
72 return NULL;
75 int
76 do_test (void)
78 fd = open ("/dev/null", O_WRONLY);
79 if (fd < 0)
81 printf ("couldn't open /dev/null, %m\n");
82 return 1;
85 count = sysconf (_SC_NPROCESSORS_ONLN);
86 if (count <= 0)
87 count = 1;
88 count *= 8;
90 pthread_t th[count + 1];
91 int i, ret;
93 for (i = 0; i <= count; ++i)
94 if ((ret = pthread_create (&th[i], NULL, tf, (void *) (long) i)) != 0)
96 errno = ret;
97 printf ("pthread_create %d failed: %m\n", i);
98 return 1;
101 struct timespec ts = { .tv_sec = 20, .tv_nsec = 0 };
102 while (nanosleep (&ts, &ts) != 0);
104 pthread_mutex_lock (&lock);
105 exiting = true;
106 pthread_mutex_unlock (&lock);
108 for (i = 0; i < count; ++i)
109 pthread_join (th[i], NULL);
111 close (fd);
112 return 0;
115 #define TEST_FUNCTION do_test ()
116 #define TIMEOUT 40
117 #include "../test-skeleton.c"