a. What is the other name for Mutex locks that perform busy waiting? What is busy waiting? b. The code section below shows the structure to control multiple readers of a data. What variable is the...

Extracted text: a. What is the other name for Mutex locks that perform busy waiting? What is busy waiting? b. The code section below shows the structure to control multiple readers of a data. What variable is the lock "mutex" protecting? Why does it need to be protected? while (true) { wait (mutex); read_count++; if (read.count -- 1) wait(rv.mutex); signal (mutex); /* reading is performed +/ wait (mutex); read.count--; if (read.count -- 0) signal (rv.mutex); signal (mutex); } Figure 2 1/2 c. Describe how to solve the Dining Philosophers problem if the solution were to be implemented using semaphores as shown in the section of code below. while (true) { wait (chopstick [i]); wait (chopstick[(i+1) % 5]); /* eat for a while */ signal(chopstick[i]); signal (chopstick[(i+1) % 5]); /* think for awhile / } Figure 3 d. Do you see any potential problem happening with the solution scheme above?