Merged revisions 73694,73708,73738 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r73694 | jesse.noller | 2009-06-29 14:24:26 -0400 (Mon, 29 Jun 2009) | 1 line
Issue 5740: multiprocessing.connection.* authkey fixes
........
r73708 | jesse.noller | 2009-06-30 13:11:52 -0400 (Tue, 30 Jun 2009) | 1 line
Resolves issues 5155, 5313, 5331 - bad file descriptor error with processes in processes
........
r73738 | r.david.murray | 2009-06-30 22:49:10 -0400 (Tue, 30 Jun 2009) | 2 lines
Make punctuation prettier and break up run-on sentence.
........
diff --git a/Lib/test/test_multiprocessing.py b/Lib/test/test_multiprocessing.py
index 2189ff5..18066ba 100644
--- a/Lib/test/test_multiprocessing.py
+++ b/Lib/test/test_multiprocessing.py
@@ -8,6 +8,7 @@
import threading
import queue as pyqueue
import time
+import io
import sys
import os
import gc
@@ -1868,7 +1869,74 @@
p.join()
self.assertEqual(self.ns.test, 1)
-testcases_other = [OtherTest, TestInvalidHandle, TestInitializers]
+#
+# Issue 5155, 5313, 5331: Test process in processes
+# Verifies os.close(sys.stdin.fileno) vs. sys.stdin.close() behavior
+#
+
+def _ThisSubProcess(q):
+ try:
+ item = q.get(block=False)
+ except pyqueue.Empty:
+ pass
+
+def _TestProcess(q):
+ queue = multiprocessing.Queue()
+ subProc = multiprocessing.Process(target=_ThisSubProcess, args=(queue,))
+ subProc.start()
+ subProc.join()
+
+def _afunc(x):
+ return x*x
+
+def pool_in_process():
+ pool = multiprocessing.Pool(processes=4)
+ x = pool.map(_afunc, [1, 2, 3, 4, 5, 6, 7])
+
+class _file_like(object):
+ def __init__(self, delegate):
+ self._delegate = delegate
+ self._pid = None
+
+ @property
+ def cache(self):
+ pid = os.getpid()
+ # There are no race conditions since fork keeps only the running thread
+ if pid != self._pid:
+ self._pid = pid
+ self._cache = []
+ return self._cache
+
+ def write(self, data):
+ self.cache.append(data)
+
+ def flush(self):
+ self._delegate.write(''.join(self.cache))
+ self._cache = []
+
+class TestStdinBadfiledescriptor(unittest.TestCase):
+
+ def test_queue_in_process(self):
+ queue = multiprocessing.Queue()
+ proc = multiprocessing.Process(target=_TestProcess, args=(queue,))
+ proc.start()
+ proc.join()
+
+ def test_pool_in_process(self):
+ p = multiprocessing.Process(target=pool_in_process)
+ p.start()
+ p.join()
+
+ def test_flushing(self):
+ sio = io.StringIO()
+ flike = _file_like(sio)
+ flike.write('foo')
+ proc = multiprocessing.Process(target=lambda: flike.flush())
+ flike.flush()
+ assert sio.getvalue() == 'foo'
+
+testcases_other = [OtherTest, TestInvalidHandle, TestInitializers,
+ TestStdinBadfiledescriptor]
#
#