Subj : Re: Reader Writer Puzzle
To   : comp.programming.threads
From : Joe Seigh
Date : Tue Jun 14 2005 11:38 pm

bonnie.caballero@ktd-kyocera.com wrote:
> Can we start with a simple solution using semaphores, mutexes or
> read-write locks?  Then maybe we can look at more advanced approaches.
> 
As long as your not implementing a rwlock, it's easy.  Get a
read lock for read operations and get a write lock for write
operations (insert, delete) on the queue.

Using a mutex wouldn't be considered a reader-writer solution.
And don't bother with semaphores.

Usually assignments of this sort want you to implement a read/write
lock with mutexes and condition variables and count of readers,
writers, waiting readers, and waiting writers with tweaks to prevent
reader starvation or writer starvation.


-- 
Joe Seigh

When you get lemons, you make lemonade.
When you get hardware, you make software.

.