add input.add_callback("key:...") support

src/util/RunnablesList.hpp

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <mutex>
 #include <memory>
 #include <unordered_map>
 #include <utility>
@@ -11,17 +12,33 @@ namespace util {
     class RunnablesList {
         int nextid = 1;
         std::unordered_map<int, runnable> runnables;
+        std::mutex mutex;
     public:
+        RunnablesList() = default;
+
+        RunnablesList(RunnablesList&& o) {
+            runnables = std::move(o.runnables);
+            nextid = o.nextid;
+        }
+
+        void operator=(RunnablesList&& o) {
+            runnables = std::move(o.runnables);
+            nextid = o.nextid;
+        }
+
         observer_handler add(runnable callback) {
+            std::lock_guard lock(mutex);
             int id = nextid++;
             runnables[id] = std::move(callback);
             return observer_handler(new int(id), [this](int* id) { //-V508
+                std::lock_guard lock(mutex);
                 runnables.erase(*id);
                 delete id;
             });
         }
 
         void notify() {
+            std::lock_guard lock(mutex);
             for (auto& entry : runnables) {
                 entry.second();
             }