Add abstraction classes for system thread primitives
diff --git a/common/os/Mutex.h b/common/os/Mutex.h
new file mode 100644
index 0000000..2a54b20
--- /dev/null
+++ b/common/os/Mutex.h
@@ -0,0 +1,64 @@
+/* Copyright 2015 Pierre Ossman for Cendio AB
+ *
+ * This 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This software 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 software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+ * USA.
+ */
+
+#ifndef __OS_MUTEX_H__
+#define __OS_MUTEX_H__
+
+namespace os {
+ class Condition;
+
+ class Mutex {
+ public:
+ Mutex();
+ ~Mutex();
+
+ void lock();
+ void unlock();
+
+ private:
+ friend Condition;
+
+ void* systemMutex;
+ };
+
+ class AutoMutex {
+ public:
+ AutoMutex(Mutex* mutex) { m = mutex; m->lock(); }
+ ~AutoMutex() { m->unlock(); }
+ private:
+ Mutex* m;
+ };
+
+ class Condition {
+ public:
+ Condition(Mutex* mutex);
+ ~Condition();
+
+ void wait();
+
+ void signal();
+ void broadcast();
+
+ private:
+ Mutex* mutex;
+ void* systemCondition;
+ };
+
+}
+
+#endif