Re: wait_queue_t is fundamentally broken; need pthread_cond_t

[Peter Osterlund]

Ralph Campbell <ralphc@xxxxxxxxxxxxxxxxxxx> writes:

> [1.] One line summary of the problem:    
> 	wait_queue_t is fundamentally broken; need pthread_cond_t
> 
> [2.] Full description of the problem/report:
> 	I hate to be the bearer of bad news but the programming model
> 	for using wait queues is fundamentally broken and should be
> 	replaced with something like pthread_cond_t. Here is an example
> 	taken from chapter 5 of "Linux Device Drivers", 2nd edition,
> 	by Rubini & Corbet:

I suggest you read the "Going to Sleep Without Races" section in
chapter 9 of that book if you want to understand why you are wrong.

-- 
Peter Osterlund - petero2@xxxxxxxxx
http://w1.894.telia.com/~u89404340
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