Function main

examples/source/allocation_limit.cpp:123–169

#include <iostream>

int main() {

	std::cout << "=== memory tracker ===" << std::endl;

#if SOL_LUAJIT_VERSION < 20100 && (UINTPTR_MAX > 0xFFFFFFFF)
	std::cout << "LuaJIT in x64 mode on LuaJIT 2.0.X versions "
	             "does not support using a custom allocator!"
	          << std::endl;
#else
	memory_tracker box;
	std::cout << "memory at start: " << box.currently_used()
	          << " bytes / " << box.memory_limit() << " bytes"
	          << std::endl;
	sol::state lua(&sol::default_at_panic,
	     &memory_tracker::allocate,
	     &box);
	lua.open_libraries(sol::lib::base);

	std::cout << "memory after state creation: "
	          << box.currently_used() << " bytes / "
	          << box.memory_limit() << " bytes" << std::endl;

	// trigger some allocations
	lua.new_usertype<my_type>("my_type",
	     "a",
	     &my_type::a,
	     "b",
	     &my_type::b,
	     "d",
	     &my_type::d);
	lua["f"] = [](std::string s) { return s + " woof!"; };

	std::cout << "memory after function and usertype setup: "
	          << box.currently_used() << " bytes / "
	          << box.memory_limit() << " bytes" << std::endl;

	lua.safe_script("print(f('bark'))");
	lua.safe_script(
	     "local obj = my_type.new() print(obj.a, obj.b, obj.c) "
	     "obj.b = true print(obj.a, obj.b, obj.c)");

	std::cout << "memory at end: " << box.currently_used()
	          << " bytes / " << box.memory_limit() << " bytes"
	          << std::endl;
#endif
	return 0;
}