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Attempt to reduce the number of updates to the TorrentView by caching 

the previous status batch dictionary and only updating the difference.
This commit is contained in:
Andrew Resch 2007-12-28 08:48:33 +00:00
parent 44c82db9a8
commit dd395b8c9c
1 changed files with 44 additions and 17 deletions
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61
deluge/ui/gtkui/torrentview.py
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@ -121,6 +121,7 @@ class TorrentView(listview.ListView, component.Component):
self.load_state("torrentview.state")
self.status_signal_received = True
self.previous_batched_status = {}
# Register the columns menu with the listview so it gets updated
# accordingly.
@ -294,37 +295,63 @@ class TorrentView(listview.ListView, component.Component):
"""Callback function for get_torrents_status(). 'status' should be a
dictionary of {torrent_id: {key, value}}."""
status = pickle.loads(status)
# Extract differences in this batch against the previous one.
# This is to prevent updating stuff we don't need to and should save
# GTK from redrawing needlessly.
new_status = {}
for torrent_id in status.keys():
if torrent_id in self.previous_batched_status.keys():
old = self.previous_batched_status[torrent_id]
new = status[torrent_id]
diff = {}
for key in new.keys():
# There is a difference, so lets add it to our new dict
if new[key] != old[key]:
diff[key] = new[key]
if len(diff.keys()) > 0:
new_status[torrent_id] = diff
else:
# The torrent_id is not in the previous status
new_status[torrent_id] = status[torrent_id]
self.previous_batched_status = status
row = self.liststore.get_iter_first()
while row != None:
torrent_id = self.liststore.get_value(
row, self.columns["torrent_id"].column_indices[0])
if torrent_id in status.keys():
if torrent_id in new_status.keys():
# Set values for each column in the row
for column in self.columns_to_update:
column_index = self.get_column_index(column)
if type(column_index) is not list:
# We only have a single list store column we need to
# update
try:
self.liststore.set_value(row,
column_index,
status[torrent_id][
self.columns[column].status_field[0]])
except (TypeError, KeyError), e:
log.warning("Unable to update column %s: %s",
column, e)
if self.columns[column].status_field[0] in \
new_status[torrent_id]:
try:
self.liststore.set_value(row,
column_index,
new_status[torrent_id][
self.columns[column].status_field[0]])
except (TypeError, KeyError), e:
log.warning("Unable to update column %s: %s",
column, e)
else:
# We have more than 1 liststore column to update
for index in column_index:
# Only update the column if the status field exists
try:
self.liststore.set_value(row,
index,
status[torrent_id][
self.columns[column].status_field[
column_index.index(index)]])
except:
pass
if self.columns[column].status_field[
column_index.index(index)] in \
new_status[torrent_id]:
try:
self.liststore.set_value(row,
index,
new_status[torrent_id][
self.columns[column].status_field[
column_index.index(index)]])
except:
pass
row = self.liststore.iter_next(row)
self.status_signal_received = True