+/**
+ * Generates a json workspace event. Returns a dynamically allocated yajl
+ * generator. Free with yajl_gen_free().
+ */
+yajl_gen ipc_marshal_workspace_event(const char *change, Con *current, Con *old);
+
+/**
+ * For the workspace events we send, along with the usual "change" field, also
+ * the workspace container in "current". For focus events, we send the
+ * previously focused workspace in "old".
+ */
+void ipc_send_workspace_event(const char *change, Con *current, Con *old);
+
+/**
+ * For the window events we send, along the usual "change" field,
+ * also the window container, in "container".
+ */
+void ipc_send_window_event(const char *property, Con *con);
+
+/**
+ * For the barconfig update events, we send the serialized barconfig.
+ */
+void ipc_send_barconfig_update_event(Barconfig *barconfig);
+
+/**
+ * For the binding events, we send the serialized binding struct.
+ */
+void ipc_send_binding_event(const char *event_type, Binding *bind);
+
+/**
+ * Set the maximum duration that we allow for a connection with an unwriteable
+ * socket.
+ */
+void ipc_set_kill_timeout(ev_tstamp new);