1 files changed, 47 insertions, 0 deletions
diff --git a/libpthread/sysdeps/l4/pt-block.c b/libpthread/sysdeps/l4/pt-block.c
new file mode 100644
index 00000000..69e1d358
--- /dev/null
+++ b/libpthread/sysdeps/l4/pt-block.c
@@ -0,0 +1,47 @@
+/* Block a thread.  L4 version.
+   Copyright (C) 2002 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,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <l4.h>
+
+#include <pt-internal.h>
+
+#include <hurd/stddef.h>
+
+/* Block THREAD.  */
+void
+__pthread_block (struct __pthread *thread)
+{
+  debug (5, "%x.%x/%x blocking",
+	 l4_thread_no (thread->threadid), l4_version (thread->threadid),
+	 thread->threadid);
+
+  l4_accept (L4_UNTYPED_WORDS_ACCEPTOR);
+  l4_msg_tag_t tag = l4_receive (l4_anythread);
+  if (l4_ipc_failed (tag))
+    {
+      debug (1, "%x.%x failed to block: %d, offset: %x",
+	     l4_thread_no (l4_myself ()), l4_version (l4_myself ()),
+	     (l4_error_code () >> 1) & 0x7,
+	     l4_error_code () >> 4);
+      assert (! l4_ipc_failed (tag));
+    }
+  else
+    debug (5, "%x.%x unblocked",
+	   l4_thread_no (thread->threadid), l4_version (thread->threadid));
+}