| /* Copyright (C) 2004-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Jakub Jelinek <jakub@redhat.com>, 2004. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <pthread.h> |
| #include <stdbool.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| |
| pthread_cond_t cv = PTHREAD_COND_INITIALIZER; |
| pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; |
| bool exiting; |
| int fd, count, spins, nn; |
| |
| void * |
| tf (void *id) |
| { |
| pthread_mutex_lock (&lock); |
| |
| if ((long) id == 0) |
| { |
| while (!exiting) |
| { |
| if ((spins++ % 1000) == 0) |
| write (fd, ".", 1); |
| pthread_mutex_unlock (&lock); |
| |
| pthread_mutex_lock (&lock); |
| int njobs = rand () % (count + 1); |
| nn = njobs; |
| if ((rand () % 30) == 0) |
| pthread_cond_broadcast (&cv); |
| else |
| while (njobs--) |
| pthread_cond_signal (&cv); |
| } |
| |
| pthread_cond_broadcast (&cv); |
| } |
| else |
| { |
| while (!exiting) |
| { |
| while (!nn && !exiting) |
| pthread_cond_wait (&cv, &lock); |
| --nn; |
| pthread_mutex_unlock (&lock); |
| |
| pthread_mutex_lock (&lock); |
| } |
| } |
| |
| pthread_mutex_unlock (&lock); |
| return NULL; |
| } |
| |
| int |
| do_test (void) |
| { |
| fd = open ("/dev/null", O_WRONLY); |
| if (fd < 0) |
| { |
| printf ("couldn't open /dev/null, %m\n"); |
| return 1; |
| } |
| |
| count = sysconf (_SC_NPROCESSORS_ONLN); |
| if (count <= 0) |
| count = 1; |
| count *= 8; |
| |
| pthread_t th[count + 1]; |
| pthread_attr_t attr; |
| int i, ret, sz; |
| pthread_attr_init (&attr); |
| sz = __getpagesize (); |
| if (sz < PTHREAD_STACK_MIN) |
| sz = PTHREAD_STACK_MIN; |
| pthread_attr_setstacksize (&attr, sz); |
| |
| for (i = 0; i <= count; ++i) |
| if ((ret = pthread_create (&th[i], &attr, tf, (void *) (long) i)) != 0) |
| { |
| errno = ret; |
| printf ("pthread_create %d failed: %m\n", i); |
| return 1; |
| } |
| |
| struct timespec ts = { .tv_sec = 20, .tv_nsec = 0 }; |
| while (nanosleep (&ts, &ts) != 0); |
| |
| pthread_mutex_lock (&lock); |
| exiting = true; |
| pthread_mutex_unlock (&lock); |
| |
| for (i = 0; i < count; ++i) |
| pthread_join (th[i], NULL); |
| |
| close (fd); |
| return 0; |
| } |
| |
| #define TEST_FUNCTION do_test () |
| #define TIMEOUT 40 |
| #include "../test-skeleton.c" |