1 files changed, 50 insertions, 0 deletions
diff --git a/mach/mutex-solid.c b/mach/mutex-solid.c
new file mode 100644
index 0000000000..aeaa269c6b
--- /dev/null
+++ b/mach/mutex-solid.c
@@ -0,0 +1,50 @@
+/* Copyright (C) 1994 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., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <lock-intern.h>
+#include <cthreads.h>
+
+/* If cthreads is linked in, it will define these variables with values
+   that point to its mutex functions.  */
+void (*_cthread_mutex_lock_routine) (struct mutex *);
+void (*_cthread_mutex_unlock_routine) (struct mutex *);
+
+void
+__mutex_lock_solid (void *lock)
+{
+  if (_cthread_mutex_lock_routine)
+    (*_cthread_mutex_lock_routine) (lock);
+  else
+    __spin_lock_solid (lock);
+}
+
+void
+__mutex_unlock_solid (void *lock)
+{
+  if (_cthread_mutex_unlock_routine)
+    (*_cthread_mutex_unlock_routine) (lock);
+}
+
+void
+__mutex_init (void *lock)
+{
+  /* This happens to be name space-safe because it is a macro.
+     It invokes only spin_lock_init, which is a macro for __spin_lock_init;
+     and cthread_queue_init, which is a macro for some simple code.  */
+  mutex_init ((struct mutex *) lock);
+}