A class to Log them all

A good way to retrieve information of what is happening in our SystemC simulations is to generate a log file with the information that we need (module name, simulation time, what phase is going on, etc.).

The most elegant and easy way to do that is to create a special class for that task, that the other modules in the simulation can use to send their information and to be stores in disk. This can be achieved designing a singleton type class. This design pattern restricts the instantiation of a class to one single object. In our case, it will cause that all modules use the same object and log file.

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