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Subject: Re: [Threads-devel] RFC: 1st pthread shared_mutex refactoring patch
From: Fredrik Orderud (forderud_at_[hidden])
Date: 2013-01-17 14:00:20

On Thu, Jan 10, 2013 at 11:47 PM, Fredrik Orderud <forderud_at_[hidden]>wrote:

> Attached is an updated patch that also updates the upgrade part. All
> boost::thread unit-tests still pass, and I think the changes makes
> shared_mutex easier to understand.
> On first sight, it might appear like some of the upgrade-related methods
> becomes less efficient due to state_data members being modified several
> times redundantly (e.g. in try_unlock_shared_and_lock_upgrade), but that is
> something the compiler should be able to optimize away. Also, I might have
> introduced a slight change in behavior in unlock_upgrade_and_lock, due to
> state.upgrade now being reset before upgrade_cond.wait(lk) (as opposed to
> before), but my impression is that it shouldn't matter.
> Please review the patch, and let me know if you have any questions.

have you had time to take a look at my updated patch yet?

If you're concerned about the size of the patch, then I would be more than
happy to divide it up into smaller "bite-sized" change-sets that can be
reviewed more easily.


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