Task: Another Time Slice

Enter the labs/lab-06/tasks/libult/support/ folder and go through the practice items below.

1. Modify the time slice set to the timer to 2 seconds. Re-run the code in test_ult.c. Notice that now no context switch happens between the 2 created threads because they end before the timer can fire.

2. Now change the printer_thread() function in test_ult.c to make it run for more than 2 seconds. See that now the prints from the two threads appear intermingled. Add prints to the handle_sigprof() function in threads.c to see the context switch happen.

If you’re having difficulties solving this exercise, go through this reading material.