In recent years, the tendency to increase the performance of a microprocessor, as an alternative solution to the increasing demand for computational resources of both applications and systems, has decreased significantly. This has led to an increase of the interest in employing multiprocessing environments. Although many models and libraries have been developed to offer support for concurrent programming, ensuring that several execution ows access shared resources in a controlled way remains a complex task. The Luaproc library, which provides support for concurrency in Lua, has shown some promise in terms of performance and cases of use. In this thesis, we study the Luaproc library and incorporate to it new functionalities in order to make it more user friendly and extend its use to new scenarios. First, we introduce the motivations to our extensions to Luaproc, discussing alternative ways of dealing with the existing limitations. Then, we present requirements, characteristics of the implementation, and limitations associated to each of the mechanisms implemented as alternative solutions to these limitations. Finally, we employ the incorporated functionalities in implementing some concurrent applications, in order to evaluate the performance and test the proper functioning of such mechanisms.