1 files changed, 38 insertions, 0 deletions
diff --git a/sysdeps/mach/htl/pt-block.c b/sysdeps/mach/htl/pt-block.c
new file mode 100644
index 0000000000..1ffda81f1f
--- /dev/null
+++ b/sysdeps/mach/htl/pt-block.c
@@ -0,0 +1,38 @@
+/* Block a thread.  Mach version.
+   Copyright (C) 2000-2018 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 <mach.h>
+#include <mach/message.h>
+
+#include <pt-internal.h>
+
+/* Block THREAD.  */
+void
+__pthread_block (struct __pthread *thread)
+{
+  mach_msg_header_t msg;
+  error_t err;
+
+  err = __mach_msg (&msg, MACH_RCV_MSG, 0, sizeof msg,
+		    thread->wakeupmsg.msgh_remote_port,
+		    MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
+  assert_perror (err);
+}