add mutex and thread abstraction to common files

common/thread_abstraction.cpp

@@ -0,0 +1,33 @@
+#include "thread_abstraction.h"
+
+Thread::Thread() :
+	mIsRunning(false),
+	mThread()
+{
+}
+
+Thread::~Thread()
+{
+	// if thread is still running on object destruction, cancel thread the hard way:
+	if (mIsRunning)
+	{
+		pthread_cancel(mThread);
+	}
+}
+
+void Thread::startThread()
+{
+	mIsRunning = true;
+	pthread_create(&mThread, 0, &Thread::runThread, this);
+}
+
+void Thread::joinThread()
+{
+	pthread_join(mThread, 0);
+	mIsRunning = false;
+}
+
+void* Thread::runThread(void* ptr)
+{
+	((Thread*)ptr)->run();
+}