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bitbake: persist_data.py: Immediately get exclusive lock in __setitem__

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To avoid races, SQLTable::__setitem__ needs an exclusive lock for the
entire transaction, not just the INSERT/UPDATE part.

(Bitbake rev: feb43e7c30f5bfab75d718896c45df621810d06f)

Signed-off-by: Chris Laplante <chris.laplante@agilent.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Chris Laplante
2020-01-16 11:28:05 -05:00
committed by Richard Purdie
parent 96adf215cc
commit 1b1a533133
1 changed files with 3 additions and 0 deletions
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3
bitbake/lib/bb/persist_data.py
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@@ -179,6 +179,9 @@ class SQLTable(collections.MutableMapping):
elif not isinstance(value, str):
raise TypeError('Only string values are supported')
# Ensure the entire transaction (including SELECT) executes under write lock
cursor.execute("BEGIN EXCLUSIVE")
cursor.execute("SELECT * from %s where key=?;" % self.table, [key])
row = cursor.fetchone()
if row is not None: