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Merged
kunitoki merged 2 commits into from
May 11, 2026
Merged

Improve table access performance #238

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7721289
Improve table speed
kunitoki May 10, 2026
3e2a73f
More coverage
kunitoki May 11, 2026
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66 changes: 22 additions & 44 deletions Benchmarks/benchmark_luabridge.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -64,9 +64,8 @@ void table_global_string_get_measure(benchmark::State& state)
luabridge::setGlobal(L, kMagicValue, "value");

double x = 0;
for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
x += static_cast<double>(luabridge::getGlobal(L, "value"));
}

Expand All @@ -78,9 +77,8 @@ void table_global_string_set_measure(benchmark::State& state)
lua_State* L = makeLua();

double v = 0;
for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
v += kMagicValue;
luabridge::setGlobal(L, v, "value");
}
Expand All @@ -95,9 +93,8 @@ void table_get_measure(benchmark::State& state)
luabridge::LuaRef t = luabridge::getGlobal(L, "warble");

double x = 0;
for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
x += static_cast<double>(t["value"]);
}

Expand All @@ -111,9 +108,8 @@ void table_set_measure(benchmark::State& state)
luabridge::LuaRef t = luabridge::getGlobal(L, "warble");

double v = 0;
for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
v += kMagicValue;
t["value"] = v;
}
Expand All @@ -127,9 +123,8 @@ void table_chained_get_measure(benchmark::State& state)
luaDoStringOrThrow(L, "ulahibe = { warble = { value = 24.0 } }", "vanilla chained_get setup");

double x = 0;
for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
luabridge::LuaRef tw = luabridge::getGlobal(L, "ulahibe")["warble"];
x += static_cast<double>(tw["value"]);
}
Expand All @@ -143,9 +138,8 @@ void table_chained_set_measure(benchmark::State& state)
luaDoStringOrThrow(L, "ulahibe = { warble = { value = 24.0 } }", "vanilla chained_set setup");

double v = 0;
for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
v += kMagicValue;
luabridge::LuaRef tw = luabridge::getGlobal(L, "ulahibe")["warble"];
tw["value"] = v;
Expand All @@ -160,9 +154,8 @@ void c_function_measure(benchmark::State& state)
luabridge::getGlobalNamespace(L).addFunction("f", +[](double v) { return v; });
luaDoStringOrThrow(L, "function invoke_f() return f(24.0) end", "vanilla c_function setup");

for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
lua_getglobal(L, "invoke_f");
luaCheckOrThrow(L, lua_pcall(L, 0, 1, 0), "vanilla invoke_f");
lua_pop(L, 1);
Expand All @@ -176,9 +169,8 @@ void lua_function_in_c_measure(benchmark::State& state)

luabridge::LuaRef f = luabridge::getGlobal(L, "f");
double x = 0;
for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
x += static_cast<double>(f(kMagicValue));
}

Expand All @@ -192,9 +184,8 @@ void c_function_through_lua_in_c_measure(benchmark::State& state)

luabridge::LuaRef f = luabridge::getGlobal(L, "f");
double x = 0;
for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
x += static_cast<double>(f(kMagicValue));
}

Expand All @@ -208,9 +199,8 @@ void member_function_call_measure(benchmark::State& state)
luaDoStringOrThrow(L, "b = c()", "vanilla member setup");
luaDoStringOrThrow(L, "function call_member() b:set(b:get() + 1.0) end", "vanilla member closure setup");

for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
lua_getglobal(L, "call_member");
luaCheckOrThrow(L, lua_pcall(L, 0, 0, 0), "vanilla call_member");
}
Expand All @@ -223,9 +213,8 @@ void userdata_variable_access_measure(benchmark::State& state)
luaDoStringOrThrow(L, "b = c()", "vanilla userdata setup");
luaDoStringOrThrow(L, "function access_var() b.var = b.var + 1.0 return b.var end", "vanilla userdata closure setup");

for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
lua_getglobal(L, "access_var");
luaCheckOrThrow(L, lua_pcall(L, 0, 1, 0), "vanilla access_var");
lua_pop(L, 1);
Expand Down Expand Up @@ -253,9 +242,8 @@ void multi_return_lua_measure(benchmark::State& state)
luabridge::getGlobalNamespace(L).addCFunction("f", vanilla_multi_return);
luaDoStringOrThrow(L, "function invoke_multi() local a,b=f(24.0) return a+b end", "vanilla multi_return_lua setup");

for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
lua_getglobal(L, "invoke_multi");
luaCheckOrThrow(L, lua_pcall(L, 0, 1, 0), "vanilla invoke_multi");
lua_pop(L, 1);
Expand All @@ -281,9 +269,8 @@ void return_userdata_measure(benchmark::State& state)
.addFunction("h", &basic_get_var);
luaDoStringOrThrow(L, "function invoke_userdata() return h(f()) end", "vanilla return_userdata setup");

for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
lua_getglobal(L, "invoke_userdata");
luaCheckOrThrow(L, lua_pcall(L, 0, 1, 0), "vanilla invoke_userdata");
lua_pop(L, 1);
Expand All @@ -296,9 +283,8 @@ void optional_success_measure(benchmark::State& state)
luaDoStringOrThrow(L, "warble = { value = 24.0 }", "vanilla optional_success setup");

double x = 0;
for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
luabridge::LuaRef tt = luabridge::getGlobal(L, "warble");
if (tt.isTable())
{
Expand All @@ -320,9 +306,8 @@ void optional_half_failure_measure(benchmark::State& state)
luaDoStringOrThrow(L, "warble = { value = 'x' }", "vanilla optional_half_failure setup");

double x = 0;
for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
luabridge::LuaRef tt = luabridge::getGlobal(L, "warble");
if (tt.isTable())
{
Expand All @@ -343,9 +328,8 @@ void optional_failure_measure(benchmark::State& state)
lua_State* L = makeLua();

double x = 0;
for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
luabridge::LuaRef tt = luabridge::getGlobal(L, "warble");
if (tt.isTable())
{
Expand All @@ -368,9 +352,8 @@ void userdata_variable_write_measure(benchmark::State& state)
luaDoStringOrThrow(L, "b = c()", "vanilla userdata_write setup");
luaDoStringOrThrow(L, "function write_var() b.var = 24.0 end", "vanilla userdata_write closure setup");

for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
lua_getglobal(L, "write_var");
luaCheckOrThrow(L, lua_pcall(L, 0, 0, 0), "vanilla write_var");
}
Expand All @@ -383,9 +366,8 @@ void userdata_property_getter_measure(benchmark::State& state)
luaDoStringOrThrow(L, "b = c()", "vanilla property_getter setup");
luaDoStringOrThrow(L, "function read_getter() return b.val end", "vanilla property_getter closure setup");

for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
lua_getglobal(L, "read_getter");
luaCheckOrThrow(L, lua_pcall(L, 0, 1, 0), "vanilla read_getter");
lua_pop(L, 1);
Expand All @@ -399,9 +381,8 @@ void userdata_property_setter_measure(benchmark::State& state)
luaDoStringOrThrow(L, "b = c()", "vanilla property_setter setup");
luaDoStringOrThrow(L, "function write_setter() b.val = 24.0 end", "vanilla property_setter closure setup");

for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
lua_getglobal(L, "write_setter");
luaCheckOrThrow(L, lua_pcall(L, 0, 0, 0), "vanilla write_setter");
}
Expand All @@ -414,9 +395,8 @@ void lambda_capture_measure(benchmark::State& state)
luabridge::getGlobalNamespace(L).addFunction("f", std::function<double(double)>([extra](double v) { return v + extra; }));
luaDoStringOrThrow(L, "function invoke_lambda() return f(24.0) end", "vanilla lambda_capture setup");

for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
lua_getglobal(L, "invoke_lambda");
luaCheckOrThrow(L, lua_pcall(L, 0, 1, 0), "vanilla invoke_lambda");
lua_pop(L, 1);
Expand All @@ -439,9 +419,8 @@ void static_member_function_call_measure(benchmark::State& state)
registerCounter(L);
luaDoStringOrThrow(L, "function invoke_static() return Counter.static_add(10, 32) end", "vanilla static_member_function setup");

for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
lua_getglobal(L, "invoke_static");
luaCheckOrThrow(L, lua_pcall(L, 0, 1, 0), "vanilla invoke_static");
lua_pop(L, 1);
Expand All @@ -466,9 +445,8 @@ void derived_method_call_measure(benchmark::State& state)
luaDoStringOrThrow(L, "obj = ComplexAB()", "vanilla derived_method setup");
luaDoStringOrThrow(L, "function call_derived() return obj:ab_func() end", "vanilla derived_method closure setup");

for (auto _ : state)
for ([[maybe_unused]] auto _ : state)
{
(void) _;
lua_getglobal(L, "call_derived");
luaCheckOrThrow(L, lua_pcall(L, 0, 1, 0), "vanilla call_derived");
lua_pop(L, 1);
Expand Down
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