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Update the comment to reflect the updated implementation

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Jean-Paul Calderone 2019-03-18 19:22:38 -04:00
parent 20ba53f586
commit 4860d16401
1 changed files with 7 additions and 8 deletions
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15
src/allmydata/frontends/magic_folder.py
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@ -974,14 +974,13 @@ class QueueMixin(HookMixin):
d = DeferredContext(defer.Deferred()) d = DeferredContext(defer.Deferred())
# During startup we scanned the collective for items to download. # During startup we scanned the collective for items to download.
# We do not need to perform another scan before processing our # If we found work to do, we do not need to perform another scan
# work queue. More importantly, the logic for determining which # here. More importantly, the logic for determining which items
# items to download is *not correct* in the case where two scans # to download is *not correct* in the case where two scans are
# are performed with no intermediate emptying of the work queue. # performed with no intermediate emptying of the work queue.
# Therefore, skip the scan in the first processing iteration. # Therefore, skip the scan any time there is queued work. The
# Either there will be work in the queue from the initial scan or # only time we expect there to be any, though, is on the first
# not. Either way, when we get here again on the next iteration, # time through this loop.
# we'll go the other way and perform a scan.
if not self._deque: if not self._deque:
# adds items to our deque # adds items to our deque
d.addCallback(lambda ignored: self._perform_scan()) d.addCallback(lambda ignored: self._perform_scan())