Dekker's algorithm is the first known correct solution to the mutual exclusion problem in concurrent programming. The solution is attributed to Dutch mathematician Th. J. Dekker by Edsger W. Dijkstra. It allows two threads to share a single-use resource without conflict, using only shared memory for communication.
Java already provides a ReentrantLock. This is for
educational purposes only.
Course: Concurrent Data Structures, Monsoon 2020
Taught by: Prof. Govindarajulu Regeti
process(i):
1. I want to enter CS.
2. If you want CS too ...
3a. If its my turn, retry 2.
4a. If its your turn, i dont want to enter.
4b. I wait for you turn to complete.
4c. I now want to enter, retry 2.
5. I enter CS (sleep).
6. Its your turn now.
7. I dont want CS.## OUTPUT
Starting 2 processes (threads) ...
1: want CS
0: want CS
1: in CS0
1: done CS
1: want CS
0: in CS0
0: done CS
0: want CS
1: in CS1
1: done CS
1: want CS
0: in CS1
0: done CS
1: in CS2
0: want CS
1: done CS
1: want CS
0: in CS2
0: done CS
0: want CS
0: in CS3
0: done CS
1: in CS3
1: done CS