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From: Richard Purdie <richard.purdie@linuxfoundation.org>
To: Patches and discussions about the oe-core layer
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Date: Thu, 23 Feb 2012 20:41:03 +0000
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On Thu, 2012-02-23 at 12:36 -0800, Rich Pixley wrote:
> On 2/23/12 12:11 , Richard Purdie wrote:
> > On Thu, 2012-02-23 at 11:21 -0800, Rich Pixley wrote:
> >> On 2/23/12 02:16 , Richard Purdie wrote:
> >>> On Wed, 2012-02-22 at 16:47 -0800, Rich Pixley wrote:
> >>>> What happens if two separate bitbake invocations both simultaneously
> >>>> attempt to download the same file?
> >>> The first will download it, the second will wait for it to finish, then
> >>> both will continue with the downloaded file.
> >> How does the second know that the first is in progress?
> > It won't be able to take the lock and the done stamp file doesn't exist
> > yet.
> What lock?
> 
> I've just read through lib/bb/fetch2/__init__.py but I'm not seeing a 
> lock.  What am I missing?

Try searching that file for expressions like "lock" and "lockfile" ;-)

Cheers,

Richard