1 files changed, 121 insertions, 0 deletions
diff --git a/sysdeps/pthread/tst-cond18.c b/sysdeps/pthread/tst-cond18.c
new file mode 100644
index 0000000000..38c35d7602
--- /dev/null
+++ b/sysdeps/pthread/tst-cond18.c
@@ -0,0 +1,121 @@
+/* Copyright (C) 2004-2020 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
+   <https://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <limits.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, spins, nn;
+enum { count = 8 };		/* Number of worker threads.  */
+
+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;
+    }
+
+  pthread_t th[count + 1];
+  pthread_attr_t attr;
+  int i, ret, sz;
+  pthread_attr_init (&attr);
+  sz = sysconf (_SC_PAGESIZE);
+#ifdef PTHREAD_STACK_MIN
+  if (sz < PTHREAD_STACK_MIN)
+	  sz = PTHREAD_STACK_MIN;
+#endif
+  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"