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While working on my last post on filesystems, I came across mqueuefs. The mqueuefs interface gives the information about the active message queues in the system and basic stats about them. I wanted to try out the posix message queues just for fun to see how it works and how the library calls are used. So I designed a sample application with few threads and used posix message queues to communicate betwen them. The sample code can be found in this repository.