+extern surf_callback(void, CpuPtr, e_surf_resource_state_t, e_surf_resource_state_t) cpuStateChangedCallbacks;
+
+/** @ingroup SURF_callbacks
+ * @brief Callbacks handler which emit the callbacks after CpuAction State changed *
+ * @details Callback functions have the following signature: `void(CpuActionPtr action, e_surf_action_state_t old, e_surf_action_state_t current)`
+ */
+extern surf_callback(void, CpuActionPtr, e_surf_action_state_t, e_surf_action_state_t) cpuActionStateChangedCallbacks;