Assignment 2 EEL4930/5934


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Assignment 2
EEL4930/5934 Advanced System Programming
In this assignment, you are going to implement the Location Updater program from Assignment
1 using multiple threads instead of multiple processes. To achieve this, your program will use
the Pthreads library to create one thread for the Email Filter and another thread for the
Calendar Filter. Note that this is an instance of the Producer Consumer problem, where Email
Filter is the producer and Calendar Filter is the consumer. You will implement a dynamic data
structure to represent the buffer that enables communication between the producer and the
consumer. The buffer will have a certain number of entries and each entry in the buffer can
hold exactly one calendar event. The size of the buffer will be determined by the command line
parameter. You should assume that the Email Filter will be reading the input from the standard
input. So, as an example, your multithreaded Location Updater program will be executed as
$ ./locationUpdater 10 < inputFile
where 10 denotes the number of entries in the buffer and inputFile contains the emails.
Please make sure that the Email Filter thread waits if there are no available slots in the buffer
and the Calendar Filter waits if there are no items in the buffer. Also, the Email Filter should let
the Calendar Filter know when no more data will be arriving. To get full credit, your solution
should be free of race conditions and deadlocks and produce the correct output by properly
synchronizing the threads. You can use mutexes and condition variables and/or semaphores for
synchronizing your threads. Please submit your files (source, README, and a Makefile) on
CANVAS by the due date.


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