1 files changed, 50 insertions, 0 deletions
diff --git a/deps/sol2/examples/source/coroutine_state.cpp b/deps/sol2/examples/source/coroutine_state.cpp
new file mode 100644
index 0000000..bcece88
--- /dev/null
+++ b/deps/sol2/examples/source/coroutine_state.cpp
@@ -0,0 +1,50 @@
+#define SOL_ALL_SAFETIES_ON 1
+#include <sol/sol.hpp>
+
+#include "assert.hpp"
+#include <iostream>
+
+int main(int, char*[]) {
+	std::cout << "=== coroutine state transfer ===" << std::endl;
+
+	sol::state lua;
+	lua.open_libraries();
+	sol::function transferred_into;
+	lua["f"] = [&lua, &transferred_into](sol::object t, sol::this_state this_L) {
+		std::cout << "state of main     : " << (void*)lua.lua_state() << std::endl;
+		std::cout << "state of function : " << (void*)this_L.lua_state() << std::endl;
+		// pass original lua_State* (or sol::state/sol::state_view)
+		// transfers ownership from the state of "t",
+		// to the "lua" sol::state
+		transferred_into = sol::function(lua, t);
+	};
+
+	lua.script(R"(
+		i = 0
+		function test()
+		co = coroutine.create(
+			function()
+				local g = function() i = i + 1 end
+				f(g)
+				g = nil
+				collectgarbage()
+			end
+		)
+		coroutine.resume(co)
+		co = nil
+		collectgarbage()
+		end
+		)");
+
+	// give it a try
+	lua.safe_script("test()");
+	// should call 'g' from main thread, increment i by 1
+	transferred_into();
+	// check
+	int i = lua["i"];
+	c_assert(i == 1);
+
+	std::cout << std::endl;
+
+	return 0;
+}