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In lua, for memory allocated with lua_newuserdata,
is it possible to register a destructor,
so that the destructor is called when the memory region is garbage collected by lua?
Thanks!
Of course it is. If the userdata has a metatable with a function called __gc, it will be called when the userdata is garbage collected, with the userdata as it’s parameter. Have a look at http://www.lua.org/manual/5.1/manual.html#2.10.1