1. Concurrent paradigms
Presentation by Joel Correa – Software engineer

2. Single Threaded Application
Thread Memory

3. Multi Threaded Application
Threads Shared Memory

4. Race condition
Threads Shared Memory
Race condition!

5. # Locks
Threads Shared Memory
1
1
????

6. # Locks
Threads Shared Memory
1
1

7. # Locks
Threads Shared Memory
2
1
21
????
???? ????

8. # Locks
Threads Shared Memory
2
1
21
????
???? ????

9. # Actors
Actors
MailBoxes
Private mutable state

10. # Actors
Actors
MailBoxes
Private mutable state
Async/Non-blocking queues!

11. # Fork / Join
Breaks an application into several parts for parallel processing
and joins the results at the end.

12. # Fork / Join
Breaks an application into several parts for parallel processing
and joins the results at the end.
Java 7 Framework

13. References:
http://www.stanford.edu/class/cs94si/Concurrency.pdf
http://tutorials.jenkov.com/java-concurrency/locks.html
http://tutorials.jenkov.com/java-concurrency/race-conditions-and-critical-sections.html
http://www.coopsoft.com/ar/ForkJoinArticle.html
Thanks!