Cache getTextureDirs()

src/client/game.cpp

@@ -863,46 +863,17 @@ Game::Game() :
 	m_chat_log_buf(g_logger),
 	m_game_ui(new GameUI())
 {
-	g_settings->registerChangedCallback("chat_log_level",
-		&settingChangedCallback, this);
-	g_settings->registerChangedCallback("doubletap_jump",
-		&settingChangedCallback, this);
-	g_settings->registerChangedCallback("toggle_sneak_key",
-		&settingChangedCallback, this);
-	g_settings->registerChangedCallback("toggle_aux1_key",
-		&settingChangedCallback, this);
-	g_settings->registerChangedCallback("enable_joysticks",
-		&settingChangedCallback, this);
-	g_settings->registerChangedCallback("enable_fog",
-		&settingChangedCallback, this);
-	g_settings->registerChangedCallback("mouse_sensitivity",
-		&settingChangedCallback, this);
-	g_settings->registerChangedCallback("joystick_frustum_sensitivity",
-		&settingChangedCallback, this);
-	g_settings->registerChangedCallback("repeat_place_time",
-		&settingChangedCallback, this);
-	g_settings->registerChangedCallback("repeat_dig_time",
-		&settingChangedCallback, this);
-	g_settings->registerChangedCallback("noclip",
-		&settingChangedCallback, this);
-	g_settings->registerChangedCallback("free_move",
-		&settingChangedCallback, this);
-	g_settings->registerChangedCallback("fog_start",
-		&settingChangedCallback, this);
-	g_settings->registerChangedCallback("cinematic",
-		&settingChangedCallback, this);
-	g_settings->registerChangedCallback("cinematic_camera_smoothing",
-		&settingChangedCallback, this);
-	g_settings->registerChangedCallback("camera_smoothing",
-		&settingChangedCallback, this);
-	g_settings->registerChangedCallback("invert_mouse",
-		&settingChangedCallback, this);
-	g_settings->registerChangedCallback("enable_hotbar_mouse_wheel",
-		&settingChangedCallback, this);
-	g_settings->registerChangedCallback("invert_hotbar_mouse_wheel",
-		&settingChangedCallback, this);
-	g_settings->registerChangedCallback("pause_on_lost_focus",
-		&settingChangedCallback, this);
+	clearTextureNameCache();
+
+	const char *settings[] = {
+		"chat_log_level", "doubletap_jump", "toggle_sneak_key", "toggle_aux1_key",
+		"enable_joysticks", "enable_fog", "mouse_sensitivity", "joystick_frustum_sensitivity",
+		"repeat_place_time", "repeat_dig_time", "noclip", "free_move", "fog_start",
+		"cinematic", "cinematic_camera_smoothing", "camera_smoothing", "invert_mouse",
+		"enable_hotbar_mouse_wheel", "invert_hotbar_mouse_wheel", "pause_on_lost_focus",
+	};
+	for (auto s : settings)
+		g_settings->registerChangedCallback(s, &settingChangedCallback, this);
 
 	readSettings();
 }
@@ -4254,11 +4225,6 @@ void the_game(volatile std::sig_atomic_t *kill,
 {
 	Game game;
 
-	/* Make a copy of the server address because if a local singleplayer server
-	 * is created then this is updated and we don't want to change the value
-	 * passed to us by the calling function
-	 */
-
 	try {
 
 		if (game.startup(kill, input, rendering_engine, start_data,

src/client/imagesource.cpp

@@ -1113,7 +1113,7 @@ bool ImageSource::generateImagePart(std::string_view part_of_name,
 						<< " for [combine" << std::endl;
 					continue;
 				}
-				infostream << "Adding \"" << filename<< "\" to combined "
+				tracestream << "Adding \"" << filename << "\" to combined "
 					<< pos_base << std::endl;
 
 				video::IImage *img = generateImage(filename, source_image_names);

src/client/texturepaths.cpp

@@ -5,6 +5,7 @@
 #include "texturepaths.h"
 
 #include "util/container.h"
+#include "util/thread.h"
 #include "settings.h"
 #include "filesys.h"
 #include "porting.h"
@@ -12,10 +13,13 @@
 
 // A cache from texture name to texture path
 static MutexedMap<std::string, std::string> g_texturename_to_path_cache;
+// Cached result of getTextureDirs()
+static MutexedVariable<std::vector<std::string>> g_texturedirs_cache;
 
 void clearTextureNameCache()
 {
 	g_texturename_to_path_cache.clear();
+	g_texturedirs_cache.set({});
 }
 
 // Find out the full path of an image by trying different filename extensions.
@@ -74,24 +78,28 @@ std::string getTexturePath(const std::string &filename, bool *is_base_pack)
 			break;
 	}
 
-	// Check from default data directory i.e. .../minetest/textures/base/pack
+	// Check from default data directory
 	if (fullpath.empty()) {
-		std::string base_path = porting::path_share + DIR_DELIM + "textures"
-				+ DIR_DELIM + "base" + DIR_DELIM + "pack";
+		std::string base_path = porting::path_share + DIR_DELIM "textures"
+				DIR_DELIM "base" DIR_DELIM "pack";
 		// Check all filename extensions. Returns "" if not found.
 		fullpath = getImagePath(base_path + DIR_DELIM + filename);
 		if (is_base_pack && !fullpath.empty())
 			*is_base_pack = true;
 	}
 
-	// Add to cache (also an empty result is cached)
+	// Add to cache (an empty result is cached too)
 	g_texturename_to_path_cache.set(filename, fullpath);
 
-	// Finally return it
 	return fullpath;
 }
 
 std::vector<std::string> getTextureDirs()
 {
-	return fs::GetRecursiveDirs(g_settings->get("texture_path"));
+	std::vector<std::string> ret = g_texturedirs_cache.get();
+	if (ret.empty()) {
+		ret = fs::GetRecursiveDirs(g_settings->get("texture_path"));
+		g_texturedirs_cache.set(ret);
+	}
+	return ret;
 }

src/client/texturepaths.h

@@ -7,7 +7,7 @@
 #include <string>
 #include <vector>
 
-// Texture paths get cached and this clears the Cache.
+// Texture paths get cached and this clears the cache.
 void clearTextureNameCache();
 
 // Find out the full path of an image by trying different filename extensions.

src/server.cpp

@@ -268,7 +268,6 @@ Server::Server(
 	m_gamespec(gamespec),
 	m_simple_singleplayer_mode(simple_singleplayer_mode),
 	m_dedicated(dedicated),
-	m_async_fatal_error(""),
 	m_con(con::createMTP(CONNECTION_TIMEOUT, m_bind_addr.isIPv6(), this)),
 	m_itemdef(createItemDefManager()),
 	m_nodedef(createNodeDefManager()),

src/util/container.h

@@ -105,7 +105,11 @@ public:
 		return result;
 	}
 
-	void clear() { m_values.clear(); }
+	void clear()
+	{
+		MutexAutoLock lock(m_mutex);
+		m_values.clear();
+	}
 
 private:
 	std::map<Key, Value> m_values;

src/util/thread.h

@@ -15,12 +15,13 @@ template<typename T>
 class MutexedVariable
 {
 public:
+	// default initialization
+	MutexedVariable() {}
+
 	MutexedVariable(const T &value):
-		m_value(value)
-	{}
+		m_value(value) {}
 	MutexedVariable(T &&value):
-		m_value(std::move(value))
-	{}
+		m_value(std::move(value)) {}
 
 	T get()
 	{