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Issue #21362: concurrent.futures does not validate that max_workers is proper

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This commit is contained in:
Brian Quinlan 2014-05-17 13:51:10 -07:00
parent 120e8edfb8
commit 20efceb757
4 changed files with 15 additions and 0 deletions
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3
Lib/concurrent/futures/process.py
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@ -334,6 +334,9 @@ class ProcessPoolExecutor(_base.Executor):
if max_workers is None:
self._max_workers = os.cpu_count() or 1
else:
if max_workers <= 0:
raise ValueError("max_workers must be greater than 0")
self._max_workers = max_workers
# Make the call queue slightly larger than the number of processes to