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, 51 insertions, 0 deletions

diff --git a/htl/pt-getattr.c b/htl/pt-getattr.c
new file mode 100644
index 0000000..b1ec5e0
--- /dev/null
+++ b/htl/pt-getattr.c
@@ -0,0 +1,51 @@
+/* Thread attributes retrieval.
+   Copyright (C) 2008-2018 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#include <assert.h>
+#include <errno.h>
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+/* Initialize thread attribute *ATTR with attributes corresponding to the
+   already running thread THREAD.  It shall be called on an uninitialized ATTR
+   and destroyed with pthread_attr_destroy when no longer needed.  */
+int
+__pthread_getattr_np (pthread_t thread, pthread_attr_t *attr)
+{
+  struct __pthread *pthread;
+
+  pthread = __pthread_getid (thread);
+  if (pthread == NULL)
+    return ESRCH;
+
+  /* Some attributes (schedparam, inheritsched, contentionscope and schedpolicy)
+     are not supported yet, so fill them with our default values.  */
+  *attr = __pthread_default_attr;
+
+  attr->__stackaddr = pthread->stackaddr +
+      ((pthread->guardsize + __vm_page_size - 1)
+       / __vm_page_size * __vm_page_size);
+  attr->__stacksize = pthread->stacksize;
+  attr->__guardsize = pthread->guardsize;
+  attr->__detachstate = (pthread->state == PTHREAD_DETACHED
+			 ? PTHREAD_CREATE_DETACHED : PTHREAD_CREATE_JOINABLE);
+
+  return 0;
+}
+weak_alias (__pthread_getattr_np, pthread_getattr_np)