OS_projectC_Mutex

代码说明：

  You are asked to design and implement a simulator for university life where lecturers provide lectures (credits) and students attend lectures (credits) to graduate. This simulator uses a bounded circular buffer shared by lecturers and students. Lecturers are concurrently providing lecturers and placing their lecturers in JCU (shared buffer) and students are concurrently taking lectures from JCU to graduate. The purpose of this assignment is to give you some "hands-on" experience with concurrent processes, semaphores, and shared memory. You need to use the modules you practiced in week 6 and 8 labs (Prac 5 and Prac 6). You need semaphores for mutual exclusion and synchronization (studied in week 6 prac) and a shared buffer for shared memory IPC (studied in week 8 prac).