Function main

examples/source/docs/std_thread.cpp:60–157

}

int main() {

	// main lua state
	sol::state lua;
	lua.open_libraries(sol::lib::base);

	// set up functions, etc. etc.
	lua.script("function f () return 4.5 end");
	lua.script("function g () return { 1.1, 2.2, 3.3 } end");

	// kick off worker
	worker_data data;
	std::thread worker(worker_thread, std::ref(data));

	// main Lua state
	bool done_working = false;
	for (std::uint64_t loops = 0; !done_working; ++loops) {
		// finished working? send nothing
		// even loop? use f
		// otherwise, use g
		if (loops >= 3) {
			data.payload.clear();
			done_working = true;
		}
		else if ((loops % 2) == 0) {
			sol::function target = lua["f"];
			data.payload = target.dump();
		}
		else {
			sol::function target = lua["g"];
			data.payload = target.dump();
		}

		// send data to the worker thread
		{
			std::lock_guard<std::mutex> lk(
			     data.until_ready_mutex);
			data.is_ready = true;
			std::cout
			     << "function serialized: sending to worker "
			        "thread to execute on Lua state...\n";
		}
		data.until_ready_condition.notify_one();

		if (done_working) {
			break;
		}
		// wait for the worker
		{
			std::unique_lock<std::mutex>
			     lock_waiting_for_worker(
			          data.until_ready_mutex);
			data.until_ready_condition.wait(
			     lock_waiting_for_worker,
			     [&data] { return data.is_processed; });
			data.is_processed = false;
		}
		auto data_processor = [](auto& returned_data) {