Add abstraction classes for system thread primitives
diff --git a/common/os/Thread.h b/common/os/Thread.h
new file mode 100644
index 0000000..41d9486
--- /dev/null
+++ b/common/os/Thread.h
@@ -0,0 +1,53 @@
+/* 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_THREAD_H__
+#define __OP_THREAD_H__
+
+namespace os {
+  class Mutex;
+
+  class Thread {
+  public:
+    Thread();
+    virtual ~Thread();
+
+    void start();
+    void wait();
+
+    bool isRunning();
+
+  protected:
+    virtual void worker() = 0;
+
+  private:
+#ifdef WIN32
+    static long unsigned __stdcall startRoutine(void* data);
+#else
+    static void* startRoutine(void* data);
+#endif
+
+  private:
+    Mutex *mutex;
+    bool running;
+
+    void *threadId;
+  };
+}
+
+#endif