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Diffstat (limited to 'pthreads/tests/barrier4.c')
-rw-r--r-- | pthreads/tests/barrier4.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/pthreads/tests/barrier4.c b/pthreads/tests/barrier4.c new file mode 100644 index 000000000..042992dfd --- /dev/null +++ b/pthreads/tests/barrier4.c @@ -0,0 +1,110 @@ +/* + * barrier4.c + * + * + * -------------------------------------------------------------------------- + * + * Pthreads-win32 - POSIX Threads Library for Win32 + * Copyright(C) 1998 John E. Bossom + * Copyright(C) 1999,2005 Pthreads-win32 contributors + * + * Contact Email: rpj@callisto.canberra.edu.au + * + * The current list of contributors is contained + * in the file CONTRIBUTORS included with the source + * code distribution. The list can also be seen at the + * following World Wide Web location: + * http://sources.redhat.com/pthreads-win32/contributors.html + * + * This 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 of the License, or (at your option) any later version. + * + * This 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 this library in the file COPYING.LIB; + * if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + * + * -------------------------------------------------------------------------- + * + * Declare a single barrier object, multiple wait on it, + * and then destroy it. + * + */ + +#include "test.h" + +enum { + NUMTHREADS = 16 +}; + +pthread_barrier_t barrier = NULL; +pthread_mutex_t mx = PTHREAD_MUTEX_INITIALIZER; +static int serialThreadCount = 0; +static int otherThreadCount = 0; + +void * +func(void * arg) +{ + int result = pthread_barrier_wait(&barrier); + + assert(pthread_mutex_lock(&mx) == 0); + + if (result == PTHREAD_BARRIER_SERIAL_THREAD) + { + serialThreadCount++; + } + else if (0 == result) + { + otherThreadCount++; + } + else + { + printf("Barrier wait failed: error = %s\n", error_string[result]); + fflush(stdout); + return NULL; + } + assert(pthread_mutex_unlock(&mx) == 0); + + return NULL; +} + +int +main() +{ + int i, j; + pthread_t t[NUMTHREADS + 1]; + + for (j = 1; j <= NUMTHREADS; j++) + { + printf("Barrier height = %d\n", j); + + serialThreadCount = 0; + + assert(pthread_barrier_init(&barrier, NULL, j) == 0); + + for (i = 1; i <= j; i++) + { + assert(pthread_create(&t[i], NULL, func, NULL) == 0); + } + + for (i = 1; i <= j; i++) + { + assert(pthread_join(t[i], NULL) == 0); + } + + assert(serialThreadCount == 1); + + assert(pthread_barrier_destroy(&barrier) == 0); + } + + assert(pthread_mutex_destroy(&mx) == 0); + + return 0; +} |