registry lock

[Rainer Müller]

On 2015-11-18 09:44, René J.V. Bertin wrote:
> On Tuesday November 17 2015 18:56:39 Ryan Schmidt wrote:
> 
>> "port list" is a read-only operation; there's no reason why it would need to set a lock nor be restricted by a lock.
> 
> And AFAIK so is everything that does not involve `port install`, `port uninstall`, `port activate` and `port deactivate`. 

The registry lock needs to be taken when the action relies on the set of
installed ports. For example, when a 'port build' is running, you should
not be able to uninstall a dependency at the same time.

This could also be solved by very fine-grained locks on a per-port
level, but the current approach of just locking the whole registry is
less error-prone.

Rainer