pthread: Move robust mutex tests from nptl to sysdeps/pthread

tst-robust8.c prints some mutex internals for nptl debugging, this
needed to be made conditioned by getting built with nptl.

1 files changed, 212 insertions, 0 deletions

diff --git a/sysdeps/pthread/tst-robust7.c b/sysdeps/pthread/tst-robust7.c
new file mode 100644
index 0000000000..be8e7492df
--- /dev/null
+++ b/sysdeps/pthread/tst-robust7.c
@@ -0,0 +1,212 @@
+/* Copyright (C) 2005-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2005.
+
+   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 <pthread.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+
+static pthread_barrier_t b;
+static pthread_cond_t c = PTHREAD_COND_INITIALIZER;
+static pthread_mutex_t m;
+static bool first = true;
+
+
+static void *
+tf (void *arg)
+{
+  long int n = (long int) arg;
+
+  if (pthread_mutex_lock (&m) != 0)
+    {
+      printf ("thread %ld: mutex_lock failed\n", n + 1);
+      exit (1);
+    }
+
+  int e = pthread_barrier_wait (&b);
+  if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
+    {
+      printf ("thread %ld: barrier_wait failed\n", n + 1);
+      exit (1);
+    }
+
+  e = pthread_cond_wait (&c, &m);
+  if (first)
+    {
+      if (e != 0)
+	{
+	  printf ("thread %ld: cond_wait failed\n", n + 1);
+	  exit (1);
+	}
+      first = false;
+    }
+  else
+    {
+      if (e != EOWNERDEAD)
+	{
+	  printf ("thread %ld: cond_wait did not return EOWNERDEAD\n", n + 1);
+	  exit (1);
+	}
+    }
+
+  if (pthread_cancel (pthread_self ()) != 0)
+    {
+      printf ("thread %ld: cancel failed\n", n + 1);
+      exit (1);
+    }
+
+  pthread_testcancel ();
+
+  printf ("thread %ld: testcancel returned\n", n + 1);
+  exit (1);
+}
+
+
+static int
+do_test (void)
+{
+  pthread_mutexattr_t a;
+  if (pthread_mutexattr_init (&a) != 0)
+    {
+      puts ("mutexattr_init failed");
+      return 1;
+    }
+
+  if (pthread_mutexattr_setrobust_np (&a, PTHREAD_MUTEX_ROBUST_NP) != 0)
+    {
+      puts ("mutexattr_setrobust failed");
+      return 1;
+    }
+
+#ifdef ENABLE_PI
+  if (pthread_mutexattr_setprotocol (&a, PTHREAD_PRIO_INHERIT) != 0)
+    {
+      puts ("pthread_mutexattr_setprotocol failed");
+      return 1;
+    }
+#endif
+
+  int e;
+  e = pthread_mutex_init (&m, &a);
+  if (e != 0)
+    {
+#ifdef ENABLE_PI
+      if (e == ENOTSUP)
+	{
+	  puts ("PI robust mutexes not supported");
+	  return 0;
+	}
+#endif
+      puts ("mutex_init failed");
+      return 1;
+    }
+
+  if (pthread_mutexattr_destroy (&a) != 0)
+    {
+      puts ("mutexattr_destroy failed");
+      return 1;
+    }
+
+  if (pthread_barrier_init (&b, NULL, 2) != 0)
+    {
+      puts ("barrier_init failed");
+      return 1;
+    }
+
+#define N 5
+  pthread_t th[N];
+  for (long int n = 0; n < N; ++n)
+    {
+      if (pthread_create (&th[n], NULL, tf, (void *) n) != 0)
+	{
+	  printf ("pthread_create loop %ld failed\n", n + 1);
+	  return 1;
+	}
+
+      e = pthread_barrier_wait (&b);
+      if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
+	{
+	  printf ("parent: barrier_wait failed in round %ld\n", n + 1);
+	  return 1;
+	}
+    }
+
+  if (pthread_mutex_lock (&m) != 0)
+    {
+      puts ("parent: mutex_lock failed");
+      return 1;
+    }
+
+  if (pthread_mutex_unlock (&m) != 0)
+    {
+      puts ("parent: mutex_unlock failed");
+      return 1;
+    }
+
+  if (pthread_cond_broadcast (&c) != 0)
+    {
+      puts ("cond_broadcast failed");
+      return 1;
+    }
+
+  for (int n = 0; n < N; ++n)
+    {
+      void *res;
+      if (pthread_join (th[n], &res) != 0)
+	{
+	  printf ("join round %d failed\n", n + 1);
+	  return 1;
+	}
+      if (res != PTHREAD_CANCELED)
+	{
+	  printf ("thread %d not canceled\n", n + 1);
+	  return 1;
+	}
+    }
+
+  e = pthread_mutex_lock (&m);
+  if (e == 0)
+    {
+      puts ("parent: 2nd mutex_lock succeeded");
+      return 1;
+    }
+  if (e != EOWNERDEAD)
+    {
+      puts ("parent: mutex_lock did not return EOWNERDEAD");
+      return 1;
+    }
+
+  if (pthread_mutex_unlock (&m) != 0)
+    {
+      puts ("parent: 2nd mutex_unlock failed");
+      return 1;
+    }
+
+  if (pthread_mutex_destroy (&m) != 0)
+    {
+      puts ("mutex_destroy failed");
+      return 1;
+    }
+
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"