'Read write locks' presentation slideshows

W4118 Operating Systems

W4118 Operating Systems. Instructor: Junfeng Yang. Logistics. CLIC machines are ready. Last lecture: concurrency errors. Why synchronization is hard Concurrency error patterns Deadlock Race Data race Atomicity Order Concurrency error detection Deadlock detection Lock order

423 views • 42 slides

Data Race Detection

Data Race Detection. Assaf Schuster. What is a Data Race?. Two concurrent accesses to a shared location, at least one of them for writing. Result non-deterministic For some memory models result is undefined Indicative of a bug. Thread 1 Thread 2 X++ T=Y Z=2 X++. LOAD X

469 views • 38 slides

666 views • 25 slides

Origin of FreeSWITCH

Origin of FreeSWITCH. Asterisk Developer Meeting (March, 2005) 5 days of coding (initial design of the core) 7 months of discussion. 3 months prep work in private. Open to the public January 1st 2006. 7 months of coding in the public eye. Design Fundamentals. Build a stable core.

387 views • 19 slides