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Issue #22054: Add os.get_blocking() and os.set_blocking() functions to get and

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set the blocking mode of a file descriptor (False if the O_NONBLOCK flag is
set, True otherwise). These functions are not available on Windows.
This commit is contained in:
Victor Stinner 2014-07-29 22:32:47 +02:00
parent 6aa4269ed2
commit 1db9e7bb19
13 changed files with 198 additions and 58 deletions
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7
Lib/test/test_posix.py
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@ -9,7 +9,6 @@ import errno
import sys
import time
import os
import fcntl
import platform
import pwd
import shutil
@ -355,7 +354,7 @@ class PosixTester(unittest.TestCase):
def test_oscloexec(self):
fd = os.open(support.TESTFN, os.O_RDONLY|os.O_CLOEXEC)
self.addCleanup(os.close, fd)
self.assertTrue(fcntl.fcntl(fd, fcntl.F_GETFD) & fcntl.FD_CLOEXEC)
self.assertFalse(os.get_inheritable(fd))
@unittest.skipUnless(hasattr(posix, 'O_EXLOCK'),
'test needs posix.O_EXLOCK')
@ -605,8 +604,8 @@ class PosixTester(unittest.TestCase):
self.addCleanup(os.close, w)
self.assertFalse(os.get_inheritable(r))
self.assertFalse(os.get_inheritable(w))
self.assertTrue(fcntl.fcntl(r, fcntl.F_GETFL) & os.O_NONBLOCK)
self.assertTrue(fcntl.fcntl(w, fcntl.F_GETFL) & os.O_NONBLOCK)
self.assertFalse(os.get_blocking(r))
self.assertFalse(os.get_blocking(w))
# try reading from an empty pipe: this should fail, not block
self.assertRaises(OSError, os.read, r, 1)
# try a write big enough to fill-up the pipe: this should either