diff --git a/cpp/dynmodule.cc b/cpp/dynmodule.cc
new file mode 100644
index 0000000..610750e
--- /dev/null
+++ b/cpp/dynmodule.cc
@@ -0,0 +1,41 @@
+#include "dynmodule.h"
+
+DynModule::DynModule()
+{
+}
+
+DynModule::~DynModule()
+{
+
+}
+
+bool DynModule::IsDataMsg(int msgid)
+{
+    return false;
+}
+
+bool DynModule::IsPending()
+{
+    return module_state_.pending;
+}
+
+bool DynModule::DataIsValid()
+{
+    return module_state_.data_is_valid;
+}
+
+void DynModule::MarkDataValid()
+{
+    module_state_.data_is_valid = true;
+}
+
+void DynModule::MarkPending()
+{
+    module_state_.pending = true;
+}
+
+void DynModule::CancelPending()
+{
+    module_state_.pending = false;
+}
+
diff --git a/cpp/dynmodule.h b/cpp/dynmodule.h
new file mode 100644
index 0000000..c64e313
--- /dev/null
+++ b/cpp/dynmodule.h
@@ -0,0 +1,24 @@
+#pragma once
+
+struct DynModuleState
+{
+    bool pending = false;
+    bool data_is_valid = false;;
+};
+
+class DynModule
+{
+ public:
+    DynModule();
+    ~DynModule();
+    virtual bool IsDataMsg(int msgid);
+    bool IsPending();
+    bool DataIsValid();
+    void MarkDataValid();
+    void MarkPending();
+    void CancelPending();
+
+ private:
+    DynModuleState module_state_;
+};
+