Run openmw_settings_access_benchmark in CI

Add benchmarks to access 2 and 3 settings. Use settings with max memory address
distance assuming Settings::Values is single memory location object.

Use settings-default.cfg from the source code repository to initialize settings.

.gitlab-ci.yml

@@ -74,6 +74,7 @@ Ubuntu_GCC_preprocess:
     - if [[ "${BUILD_TESTS_ONLY}" ]]; then ./openmw-cs-tests --gtest_output="xml:openmw_cs_tests.xml"; fi
     - if [[ "${BUILD_TESTS_ONLY}" && ! "${BUILD_WITH_CODE_COVERAGE}" ]]; then ./openmw_detournavigator_navmeshtilescache_benchmark; fi
     - if [[ "${BUILD_TESTS_ONLY}" && ! "${BUILD_WITH_CODE_COVERAGE}" ]]; then ./openmw_esm_refid_benchmark; fi
+    - if [[ "${BUILD_TESTS_ONLY}" && ! "${BUILD_WITH_CODE_COVERAGE}" ]]; then ./openmw_settings_access_benchmark; fi
     - ccache -s
     - df -h
     - if [[ "${BUILD_WITH_CODE_COVERAGE}" ]]; then gcovr --xml-pretty --exclude-unreachable-branches --print-summary --root "${CI_PROJECT_DIR}" -j $(nproc) -o ../coverage.xml; fi

apps/benchmarks/settings/CMakeLists.txt

@@ -1,6 +1,9 @@
 openmw_add_executable(openmw_settings_access_benchmark access.cpp)
 target_link_libraries(openmw_settings_access_benchmark benchmark::benchmark components)
 
+target_compile_definitions(openmw_settings_access_benchmark
+    PRIVATE OPENMW_PROJECT_SOURCE_DIR=u8"${PROJECT_SOURCE_DIR}")
+
 if (UNIX AND NOT APPLE)
     target_link_libraries(openmw_settings_access_benchmark ${CMAKE_THREAD_LIBS_INIT})
 endif()

apps/benchmarks/settings/access.cpp

@@ -1,32 +1,36 @@
 #include <benchmark/benchmark.h>
 
-#include <components/files/configurationmanager.hpp>
-#include <components/settings/settings.hpp>
-#include <components/settings/values.hpp>
-
-#include <boost/program_options.hpp>
-
-#include <algorithm>
-#include <iostream>
+#include "components/misc/strings/conversion.hpp"
+#include "components/settings/parser.hpp"
+#include "components/settings/settings.hpp"
+#include "components/settings/values.hpp"
 
 namespace
 {
-    namespace bpo = boost::program_options;
+    void settingsManager(benchmark::State& state)
+    {
+        for (auto _ : state)
+        {
+            benchmark::DoNotOptimize(Settings::Manager::getFloat("sky blending start", "Fog"));
+        }
+    }
 
-    bpo::options_description makeOptionsDescription()
+    void settingsManager2(benchmark::State& state)
     {
-        bpo::options_description result;
-        auto addOption = result.add_options();
-        addOption("help", "print help message");
-        Files::ConfigurationManager::addCommonOptions(result);
-        return result;
+        for (auto _ : state)
+        {
+            benchmark::DoNotOptimize(Settings::Manager::getFloat("near clip", "Camera"));
+            benchmark::DoNotOptimize(Settings::Manager::getBool("transparent postpass", "Post Processing"));
+        }
     }
 
-    void settingsManager(benchmark::State& state)
+    void settingsManager3(benchmark::State& state)
     {
         for (auto _ : state)
         {
-            benchmark::DoNotOptimize(Settings::Manager::getFloat("sky blending start", "Fog"));
+            benchmark::DoNotOptimize(Settings::Manager::getFloat("near clip", "Camera"));
+            benchmark::DoNotOptimize(Settings::Manager::getBool("transparent postpass", "Post Processing"));
+            benchmark::DoNotOptimize(Settings::Manager::getInt("reflection detail", "Water"));
         }
     }
 
@@ -39,6 +43,30 @@ namespace
         }
     }
 
+    void localStatic2(benchmark::State& state)
+    {
+        for (auto _ : state)
+        {
+            static const float v1 = Settings::Manager::getFloat("near clip", "Camera");
+            static const bool v2 = Settings::Manager::getBool("transparent postpass", "Post Processing");
+            benchmark::DoNotOptimize(v1);
+            benchmark::DoNotOptimize(v2);
+        }
+    }
+
+    void localStatic3(benchmark::State& state)
+    {
+        for (auto _ : state)
+        {
+            static const float v1 = Settings::Manager::getFloat("near clip", "Camera");
+            static const bool v2 = Settings::Manager::getBool("transparent postpass", "Post Processing");
+            static const int v3 = Settings::Manager::getInt("reflection detail", "Water");
+            benchmark::DoNotOptimize(v1);
+            benchmark::DoNotOptimize(v2);
+            benchmark::DoNotOptimize(v3);
+        }
+    }
+
     void settingsStorage(benchmark::State& state)
     {
         for (auto _ : state)
@@ -46,37 +74,55 @@ namespace
             benchmark::DoNotOptimize(Settings::fog().mSkyBlendingStart.get());
         }
     }
+
+    void settingsStorage2(benchmark::State& state)
+    {
+        for (auto _ : state)
+        {
+            benchmark::DoNotOptimize(Settings::postProcessing().mTransparentPostpass.get());
+            benchmark::DoNotOptimize(Settings::camera().mNearClip.get());
+        }
+    }
+
+    void settingsStorage3(benchmark::State& state)
+    {
+        for (auto _ : state)
+        {
+            benchmark::DoNotOptimize(Settings::postProcessing().mTransparentPostpass.get());
+            benchmark::DoNotOptimize(Settings::camera().mNearClip.get());
+            benchmark::DoNotOptimize(Settings::water().mReflectionDetail.get());
+        }
+    }
 }
 
 BENCHMARK(settingsManager);
 BENCHMARK(localStatic);
 BENCHMARK(settingsStorage);
 
-int main(int argc, char* argv[])
-{
-    bpo::options_description desc = makeOptionsDescription();
+BENCHMARK(settingsManager2);
+BENCHMARK(localStatic2);
+BENCHMARK(settingsStorage2);
 
-    bpo::parsed_options options = bpo::command_line_parser(argc, argv).options(desc).allow_unregistered().run();
-    bpo::variables_map variables;
+BENCHMARK(settingsManager3);
+BENCHMARK(localStatic3);
+BENCHMARK(settingsStorage3);
 
-    bpo::store(options, variables);
-    bpo::notify(variables);
+int main(int argc, char* argv[])
+{
+    const std::filesystem::path settingsDefaultPath = std::filesystem::path{ OPENMW_PROJECT_SOURCE_DIR } / "files"
+        / Misc::StringUtils::stringToU8String("settings-default.cfg");
 
-    if (variables.find("help") != variables.end())
-    {
-        std::cout << desc << std::endl;
-        benchmark::Initialize(&argc, argv);
-        benchmark::Shutdown();
-        return 1;
-    }
+    Settings::SettingsFileParser parser;
+    parser.loadSettingsFile(settingsDefaultPath, Settings::Manager::mDefaultSettings);
 
-    Files::ConfigurationManager config;
+    Settings::Values::initDefaults();
 
-    bpo::variables_map composingVariables = Files::separateComposingVariables(variables, desc);
-    config.readConfiguration(variables, desc);
-    Files::mergeComposingVariables(variables, composingVariables, desc);
+    Settings::Manager::mUserSettings = Settings::Manager::mDefaultSettings;
+    Settings::Manager::mUserSettings.erase({ "Camera", "near clip" });
+    Settings::Manager::mUserSettings.erase({ "Post Processing", "transparent postpass" });
+    Settings::Manager::mUserSettings.erase({ "Water", "reflection detail" });
 
-    Settings::Manager::load(config);
+    Settings::Values::init();
 
     benchmark::Initialize(&argc, argv);
     benchmark::RunSpecifiedBenchmarks();

components/settings/values.hpp

@@ -27,6 +27,8 @@
 #include "categories/water.hpp"
 #include "categories/windows.hpp"
 
+#include <cassert>
+
 namespace Settings
 {
     class Values
@@ -70,6 +72,7 @@ namespace Settings
 
     inline Values& values()
     {
+        assert(Values::sValues != nullptr);
         return *Values::sValues;
     }