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-rw-r--r--htl/tests/test-6.c114
1 files changed, 114 insertions, 0 deletions
diff --git a/htl/tests/test-6.c b/htl/tests/test-6.c
new file mode 100644
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+++ b/htl/tests/test-6.c
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+/* Test barriers.
+ Copyright (C) 2000-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ 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/>. */
+
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <stdio.h>
+#include <error.h>
+#include <assert.h>
+#include <errno.h>
+
+#define THREADS 500
+#define WAITS 3
+
+void *
+dowait (void *arg)
+{
+ pthread_barrier_t *barrier = arg;
+ int ret;
+
+ ret = pthread_barrier_wait (barrier);
+ printf ("%d ", pthread_self ());
+ return (void *) ret;
+}
+
+int
+main (int argc, char **argv)
+{
+ pthread_barrierattr_t attr;
+ pthread_barrier_t barrier;
+
+ int i, j;
+ error_t err;
+ pthread_t tid[THREADS];
+
+ int havesyncs;
+
+ err = pthread_barrierattr_init (&attr);
+ if (err)
+ error (1, err, "pthread_barrierattr_init");
+
+ err = pthread_barrierattr_getpshared (&attr, &i);
+ if (err)
+ error (1, err, "pthread_barrierattr_getpshared");
+ assert (i == PTHREAD_PROCESS_PRIVATE || i == PTHREAD_PROCESS_SHARED);
+
+ err = pthread_barrierattr_setpshared (&attr, PTHREAD_PROCESS_PRIVATE);
+ if (err)
+ error (1, err, "pthread_barrierattr_setpshared");
+
+ err = pthread_barrier_init (&barrier, &attr, THREADS + 1);
+ if (err)
+ error (1, err, "pthread_barrier_init");
+
+ for (j = 0; j < WAITS; j++)
+ {
+
+ for (i = 0; i < THREADS; i++)
+ {
+ err = pthread_create (&tid[i], 0, dowait, &barrier);
+ if (err)
+ error (1, err, "pthread_create (%d)", i);
+ }
+
+ printf ("Manager will now call pthread_barrier_wait.\n");
+
+ havesyncs
+ = pthread_barrier_wait (&barrier) == PTHREAD_BARRIER_SERIAL_THREAD
+ ? 1 : 0;
+
+ for (i = THREADS - 1; i >= 0; i--)
+ {
+ void *ret;
+ err = pthread_join (tid[i], &ret);
+ if (err)
+ error (1, err, "pthread_join");
+
+ switch ((int) ret)
+ {
+ case 0:
+ break;
+
+ case PTHREAD_BARRIER_SERIAL_THREAD:
+ havesyncs++;
+ break;
+
+ default:
+ assert (!"Unknown value returned from pthread_barrier_wait.");
+ break;
+ }
+ }
+
+ printf ("\n");
+
+ assert (havesyncs == 1);
+ }
+
+ return 0;
+}