Add some more benchmarking.

unit_tests/signals/state.cpp

@@ -137,4 +137,31 @@ TEST_CASE("state changes and component dirtying", "[signals][state]")
     refresh_system(sys);
 
     REQUIRE(log.str() == "clean;12;clean;12;writing;dirty;13;clean;13;");
+
+    // And some benchmarking...
+    BENCHMARK("deep state changes")
+    {
+        refresh_system(sys);
+
+        my_state_change_event e;
+        dispatch_event(sys, e);
+    };
+}
+
+TEST_CASE("get_state benchmarks", "[signals][state]")
+{
+    BENCHMARK("get_state")
+    {
+        alia::system sys;
+        initialize_system(sys, [&](context ctx) {
+            scoped_component_container srr(ctx);
+            // The get_state call is all we really want to benchmark, but
+            // somehow, invoking the BENCHMARK macro inside component code
+            // causes a stack overflow, so we just repeat it many times so that
+            // it dominates the results.
+            for (int i = 0; i != 20; ++i)
+                get_state(ctx, 12);
+        });
+        refresh_system(sys);
+    };
 }