hurd: Add hurd thread library

Contributed by

Agustina Arzille <avarzille@riseup.net>
Amos Jeffries <squid3@treenet.co.nz>
David Michael <fedora.dm0@gmail.com>
Marco Gerards <marco@gnu.org>
Marcus Brinkmann <marcus@gnu.org>
Neal H. Walfield <neal@gnu.org>
Pino Toscano <toscano.pino@tiscali.it>
Richard Braun <rbraun@sceen.net>
Roland McGrath <roland@gnu.org>
Samuel Thibault <samuel.thibault@ens-lyon.org>
Thomas DiModica <ricinwich@yahoo.com>
Thomas Schwinge <tschwinge@gnu.org>

	* htl: New directory.
	* sysdeps/htl: New directory.
	* sysdeps/hurd/htl: New directory.
	* sysdeps/i386/htl: New directory.
	* sysdeps/mach/htl: New directory.
	* sysdeps/mach/hurd/htl: New directory.
	* sysdeps/mach/hurd/i386/htl: New directory.
	* nscd/Depend, resolv/Depend, rt/Depend: Add htl dependency.
	* sysdeps/mach/hurd/i386/Implies: Add mach/hurd/i386/htl imply.
	* sysdeps/mach/hurd/i386/libpthread.abilist: New file.

1 files changed, 66 insertions, 0 deletions

diff --git a/sysdeps/htl/pt-mutex-transfer-np.c b/sysdeps/htl/pt-mutex-transfer-np.c
new file mode 100644
index 0000000000..e208ac1b58
--- /dev/null
+++ b/sysdeps/htl/pt-mutex-transfer-np.c
@@ -0,0 +1,66 @@
+/* Transfer ownership of a mutex.  Generic version.
+   Copyright (C) 2008-2018 Free Software Foundation, Inc.
+   Written by Neal H. Walfield <neal@gnu.org>.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd 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 3 of
+   the License, or (at your option) any later version.
+
+   The GNU Hurd 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 program.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <pthread.h>
+#include <assert.h>
+
+#include <pt-internal.h>
+
+int
+__pthread_mutex_transfer_np (struct __pthread_mutex *mutex, pthread_t tid)
+{
+  assert (mutex->__owner == _pthread_self ());
+
+  struct __pthread *thread = __pthread_getid (tid);
+  const struct __pthread_mutexattr *attr = mutex->__attr;
+
+  if (thread == NULL)
+    return ESRCH;
+
+  if (thread == _pthread_self ())
+    return 0;
+
+  if (attr == __PTHREAD_ERRORCHECK_MUTEXATTR)
+    attr = &__pthread_errorcheck_mutexattr;
+  if (attr == __PTHREAD_RECURSIVE_MUTEXATTR)
+    attr = &__pthread_recursive_mutexattr;
+
+  if (attr != NULL && attr->__mutex_type == PTHREAD_MUTEX_ERRORCHECK)
+    {
+
+      if (mutex->__owner != _pthread_self ())
+	return EPERM;
+
+      mutex->__owner = thread;
+    }
+
+#ifndef NDEBUG
+# if !defined(ALWAYS_TRACK_MUTEX_OWNER)
+  if (attr != NULL && attr->__mutex_type != PTHREAD_MUTEX_NORMAL)
+# endif
+    {
+      mutex->__owner = thread;
+    }
+#endif
+
+  return 0;
+}
+
+strong_alias (__pthread_mutex_transfer_np, pthread_mutex_transfer_np)