kern/rtmutex: new module

The rtmutex provides real-time mutexes, i.e. mutexes for which priority
inheritance is unconditionally enabled.

1 files changed, 30 insertions, 0 deletions

diff --git a/kern/rtmutex_types.h b/kern/rtmutex_types.h
new file mode 100644
index 00000000..c03e0484
--- /dev/null
+++ b/kern/rtmutex_types.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2017 Richard Braun.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * Isolated type definition used to avoid inclusion circular dependencies.
+ */
+
+#ifndef _KERN_RTMUTEX_TYPES_H
+#define _KERN_RTMUTEX_TYPES_H
+
+#include <stdint.h>
+
+struct rtmutex {
+    uintptr_t owner;
+};
+
+#endif /* _KERN_RTMUTEX_TYPES_H */