Mod profiling support

Config settings:
profiling = true/false (gather statistics)
detailed_profiling = true/false (break mod times to callbacks)

Chat commands:
save_mod_profile saves current statistics in debug.txt and shows on console (on default loglevel)

2 files changed, 11 insertions, 0 deletions

diff --git a/src/script/lua_api/l_env.cpp b/src/script/lua_api/l_env.cpp
index 42bfc4beb..e6ca846d8 100644
--- a/src/script/lua_api/l_env.cpp
+++ b/src/script/lua_api/l_env.cpp
@@ -797,6 +797,13 @@ int ModApiEnvMod::l_forceload_free_block(lua_State *L)
 	return 0;
 }
 
+// get_us_time()
+int ModApiEnvMod::l_get_us_time(lua_State *L)
+{
+	lua_pushnumber(L, porting::getTimeUs());
+	return 1;
+}
+
 void ModApiEnvMod::Initialize(lua_State *L, int top)
 {
 	API_FCT(set_node);
@@ -834,4 +841,5 @@ void ModApiEnvMod::Initialize(lua_State *L, int top)
 	API_FCT(transforming_liquid_add);
 	API_FCT(forceload_block);
 	API_FCT(forceload_free_block);
+	API_FCT(get_us_time);
 }
diff --git a/src/script/lua_api/l_env.h b/src/script/lua_api/l_env.h
index 420866d5d..76c6594ab 100644
--- a/src/script/lua_api/l_env.h
+++ b/src/script/lua_api/l_env.h
@@ -156,6 +156,9 @@ private:
 	// stops forceloading a position
 	static int l_forceload_free_block(lua_State *L);
 	
+	// get us precision time
+	static int l_get_us_time(lua_State *L);
+
 public:
 	static void Initialize(lua_State *L, int top);
 };