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7231: recursion limit during navigation; added non-blocking lock to prevent reentrant calls over and over to prevent overflowing stack

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This commit is contained in:
Doug Blank 2013-11-26 07:51:38 -05:00
parent 3e17a1586a
commit 2d147924e8
1 changed files with 4 additions and 1 deletions
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5
gramps/plugins/gramplet/backlinks.py
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@ -56,13 +56,16 @@ class Backlinks(Gramplet):
"""
Display the back references for an object.
"""
if self.lock.acquire():
locked = self.lock.acquire(False)
if locked:
for classname, handle in \
self.dbstate.db.find_backlink_handles(active_handle):
name = navigation_label(self.dbstate.db, classname, handle)[0]
self.model.add((_(classname), name, handle, classname))
self.set_has_data(self.model.count > 0)
self.lock.release()
else:
pass # skipped because already updating
def get_has_data(self, active_handle):
"""