diff --git a/dlangide-monod-linux.dproj b/dlangide-monod-linux.dproj
index 1bfe180..23a6d04 100644
--- a/dlangide-monod-linux.dproj
+++ b/dlangide-monod-linux.dproj
@@ -190,5 +190,7 @@
     <Compile Include="src\dlangide\ui\wspanel.d" />
     <Compile Include="src\dlangide\workspace\project.d" />
     <Compile Include="src\dlangide\workspace\workspace.d" />
+    <Compile Include="src\ddebug\common\debugger.d" />
+    <Compile Include="src\ddebug\common\queue.d" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/src/ddebug/common/debugger.d b/src/ddebug/common/debugger.d
new file mode 100644
index 0000000..9c99a16
--- /dev/null
+++ b/src/ddebug/common/debugger.d
@@ -0,0 +1,27 @@
+module ddebug.common.debugger;
+
+import core.thread;
+import dlangui.core.logger;
+
+interface Debugger {
+	/// start debugging
+	void startDebugging(string executable, string[] args, string workingDir);
+}
+
+interface DebuggerCallback {
+}
+
+class DebuggerBase : Thread {
+	private bool _stopRequested;
+	private bool _finished;
+
+	this() {
+		super(&run);
+	}
+
+	private void run() {
+		Log.i("Debugger thread started");
+		Log.i("Debugger thread finished");
+		_finished = true;
+	}
+}
diff --git a/src/ddebug/common/queue.d b/src/ddebug/common/queue.d
new file mode 100644
index 0000000..bac99ec
--- /dev/null
+++ b/src/ddebug/common/queue.d
@@ -0,0 +1,26 @@
+module ddebug.common.queue;
+
+import core.sync.condition;
+import core.sync.mutex;
+
+class BlockingQueue(T) {
+
+	private Mutex _mutex;
+	private Condition _condition;
+
+	this() {
+		_mutex = new Mutex();
+		_condition = new Condition(_mutex);
+	}
+
+	~this() {
+		// TODO: destroy mutex?
+	}
+
+	void put(T item) {
+	}
+
+	bool get(ref T value, int timeoutMillis) {
+		return false;
+	}
+}