Re: Semaphores and threads anomaly and bug?

[Linus Torvalds]

On Tue, 4 Nov 2003, John M Collins wrote:
> 
> I know this isn't defined anywhere but the seems to be an ambiguity and 
> discrepancy between versions of Unix and Linux over threads and semaphores.
> 
> Do the "SEM_UNDO"s get applied when a thread terminates or when the 
> "whole thing" terminates?

It's entirely up to you. That's what CLONE_SYSVSEM is supposed to 
determine.

However, CLONE_SYSVSEM is fairly recent, and I think you will need to use 
the new threading libraries to see it.

		Linus

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