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Avoid crash due to race on chart instance ref during startup?

mxmn_from_m4
Tyler Goodlet 2022-06-25 18:54:26 -04:00
parent 191b94b67c
commit 7a33ba64f1
1 changed files with 19 additions and 14 deletions
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33
piker/ui/_chart.py
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@ -230,25 +230,26 @@ class GodWidget(QWidget):
# - we'll probably want per-instrument/provider state here? # - we'll probably want per-instrument/provider state here?
# change the order config form over to the new chart # change the order config form over to the new chart
# XXX: since the pp config is a singleton widget we have to
# also switch it over to the new chart's interal-layout
# self.linkedsplits.chart.qframe.hbox.removeWidget(self.pp_pane)
chart = linkedsplits.chart
# chart is already in memory so just focus it # chart is already in memory so just focus it
linkedsplits.show() linkedsplits.show()
linkedsplits.focus() linkedsplits.focus()
linkedsplits.graphics_cycle() linkedsplits.graphics_cycle()
await trio.sleep(0) await trio.sleep(0)
# resume feeds *after* rendering chart view asap # XXX: since the pp config is a singleton widget we have to
chart.resume_all_feeds() # also switch it over to the new chart's interal-layout
# self.linkedsplits.chart.qframe.hbox.removeWidget(self.pp_pane)
chart = linkedsplits.chart
# TODO: we need a check to see if the chart # resume feeds *after* rendering chart view asap
# last had the xlast in view, if so then shift so it's if chart:
# still in view, if the user was viewing history then chart.resume_all_feeds()
# do nothing yah?
chart.default_view() # TODO: we need a check to see if the chart
# last had the xlast in view, if so then shift so it's
# still in view, if the user was viewing history then
# do nothing yah?
chart.default_view()
self.linkedsplits = linkedsplits self.linkedsplits = linkedsplits
symbol = linkedsplits.symbol symbol = linkedsplits.symbol
@ -761,8 +762,12 @@ class ChartPlotWidget(pg.PlotWidget):
self.pi_overlay: PlotItemOverlay = PlotItemOverlay(self.plotItem) self.pi_overlay: PlotItemOverlay = PlotItemOverlay(self.plotItem)
def resume_all_feeds(self): def resume_all_feeds(self):
for feed in self._feeds.values(): try:
self.linked.godwidget._root_n.start_soon(feed.resume) for feed in self._feeds.values():
self.linked.godwidget._root_n.start_soon(feed.resume)
except RuntimeError:
# TODO: cancel the qtractor runtime here?
raise
def pause_all_feeds(self): def pause_all_feeds(self):
for feed in self._feeds.values(): for feed in self._feeds.values():