The riddle of atomic data transfer from process A to process B

[Shachar Shemesh]

On 13/04/11 16:07, Omer Zak wrote:
> The riddle:
> 1. If the operating system being used is Linux, what other mechanisms
> (besides turning off interrupts) are available to single-processor
> systems to accomplish this?
> 2. If the system has a multi-core processor or several processors, which
> low overhead synchronization method can be used to accomplish this?
>
>    
Read in Linux Device Drivers how to implement a queue with no locks. You 
don't need the data access to be atomic, so long as the queue pointer 
can be accessed atomically.

Shachar

-- 
Shachar Shemesh
Lingnu Open Source Consulting Ltd.
http://www.lingnu.com