Prepare for radical source tree reorganization.zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 221 insertions, 0 deletions

diff --git a/REORG.TODO/nptl/tst-rwlock9.c b/REORG.TODO/nptl/tst-rwlock9.c
new file mode 100644
index 0000000000..a7ea34fae6
--- /dev/null
+++ b/REORG.TODO/nptl/tst-rwlock9.c
@@ -0,0 +1,221 @@
+/* Test program for timedout read/write lock functions.
+   Copyright (C) 2000-2017 Free Software Foundation, Inc.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2000.
+
+   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; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <error.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/time.h>
+
+
+#define NWRITERS 15
+#define WRITETRIES 10
+#define NREADERS 15
+#define READTRIES 15
+
+#define TIMEOUT 1000000
+#define DELAY   1000000
+
+#ifndef KIND
+# define KIND PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP
+#endif
+
+static pthread_rwlock_t lock;
+
+
+static void *
+writer_thread (void *nr)
+{
+  struct timespec ts;
+  struct timespec delay;
+  int n;
+
+  delay.tv_sec = 0;
+  delay.tv_nsec = DELAY;
+
+  for (n = 0; n < WRITETRIES; ++n)
+    {
+      int e;
+      do
+	{
+	  struct timeval tv;
+	  (void) gettimeofday (&tv, NULL);
+	  TIMEVAL_TO_TIMESPEC (&tv, &ts);
+
+	  ts.tv_nsec += 2 * TIMEOUT;
+	  if (ts.tv_nsec >= 1000000000)
+	    {
+	      ts.tv_nsec -= 1000000000;
+	      ++ts.tv_sec;
+	    }
+
+	  printf ("writer thread %ld tries again\n", (long int) nr);
+
+	  e = pthread_rwlock_timedwrlock (&lock, &ts);
+	  if (e != 0 && e != ETIMEDOUT)
+	    {
+	      puts ("timedwrlock failed");
+	      exit (1);
+	    }
+	}
+      while (e == ETIMEDOUT);
+
+      printf ("writer thread %ld succeeded\n", (long int) nr);
+
+      nanosleep (&delay, NULL);
+
+      if (pthread_rwlock_unlock (&lock) != 0)
+	{
+	  puts ("unlock for writer failed");
+	  exit (1);
+	}
+
+      printf ("writer thread %ld released\n", (long int) nr);
+    }
+
+  return NULL;
+}
+
+
+static void *
+reader_thread (void *nr)
+{
+  struct timespec ts;
+  struct timespec delay;
+  int n;
+
+  delay.tv_sec = 0;
+  delay.tv_nsec = DELAY;
+
+  for (n = 0; n < READTRIES; ++n)
+    {
+      int e;
+      do
+	{
+	  struct timeval tv;
+	  (void) gettimeofday (&tv, NULL);
+	  TIMEVAL_TO_TIMESPEC (&tv, &ts);
+
+	  ts.tv_nsec += TIMEOUT;
+	  if (ts.tv_nsec >= 1000000000)
+	    {
+	      ts.tv_nsec -= 1000000000;
+	      ++ts.tv_sec;
+	    }
+
+	  printf ("reader thread %ld tries again\n", (long int) nr);
+
+	  e = pthread_rwlock_timedrdlock (&lock, &ts);
+	  if (e != 0 && e != ETIMEDOUT)
+	    {
+	      puts ("timedrdlock failed");
+	      exit (1);
+	    }
+	}
+      while (e == ETIMEDOUT);
+
+      printf ("reader thread %ld succeeded\n", (long int) nr);
+
+      nanosleep (&delay, NULL);
+
+      if (pthread_rwlock_unlock (&lock) != 0)
+	{
+	  puts ("unlock for reader failed");
+	  exit (1);
+	}
+
+      printf ("reader thread %ld released\n", (long int) nr);
+    }
+
+  return NULL;
+}
+
+
+static int
+do_test (void)
+{
+  pthread_t thwr[NWRITERS];
+  pthread_t thrd[NREADERS];
+  int n;
+  void *res;
+  pthread_rwlockattr_t a;
+
+  if (pthread_rwlockattr_init (&a) != 0)
+    {
+      puts ("rwlockattr_t failed");
+      exit (1);
+    }
+
+  if (pthread_rwlockattr_setkind_np (&a, KIND) != 0)
+    {
+      puts ("rwlockattr_setkind failed");
+      exit (1);
+    }
+
+  if (pthread_rwlock_init (&lock, &a) != 0)
+    {
+      puts ("rwlock_init failed");
+      exit (1);
+    }
+
+  /* Make standard error the same as standard output.  */
+  dup2 (1, 2);
+
+  /* Make sure we see all message, even those on stdout.  */
+  setvbuf (stdout, NULL, _IONBF, 0);
+
+  for (n = 0; n < NWRITERS; ++n)
+    if (pthread_create (&thwr[n], NULL, writer_thread,
+			(void *) (long int) n) != 0)
+      {
+	puts ("writer create failed");
+	exit (1);
+      }
+
+  for (n = 0; n < NREADERS; ++n)
+    if (pthread_create (&thrd[n], NULL, reader_thread,
+			(void *) (long int) n) != 0)
+      {
+	puts ("reader create failed");
+	exit (1);
+      }
+
+  /* Wait for all the threads.  */
+  for (n = 0; n < NWRITERS; ++n)
+    if (pthread_join (thwr[n], &res) != 0)
+      {
+	puts ("writer join failed");
+	exit (1);
+      }
+  for (n = 0; n < NREADERS; ++n)
+    if (pthread_join (thrd[n], &res) != 0)
+      {
+	puts ("reader join failed");
+	exit (1);
+      }
+
+  return 0;
+}
+
+#undef TIMEOUT
+#define TIMEOUT 30
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"