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cpython/Lib/multiprocessing
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Asheesh Laroia bf2e7e55d7
bpo-40692: Run more test_concurrent_futures tests (GH-20239) 
In the case of multiprocessing.synchronize() being missing, the
test_concurrent_futures test suite now skips only the tests that
require multiprocessing.synchronize().

Validate that multiprocessing.synchronize exists as part of
_check_system_limits(), allowing ProcessPoolExecutor to raise
NotImplementedError during __init__, rather than crashing with
ImportError during __init__ when creating a lock imported from
multiprocessing.synchronize.

Use _check_system_limits() to disable tests of
ProcessPoolExecutor on systems without multiprocessing.synchronize.

Running the test suite without multiprocessing.synchronize reveals
that Lib/compileall.py crashes when it uses a ProcessPoolExecutor.
Therefore, change Lib/compileall.py to call _check_system_limits()
before creating the ProcessPoolExecutor.

Note that both Lib/compileall.py and Lib/test/test_compileall.py
were attempting to sanity-check ProcessPoolExecutor by expecting
ImportError. In multiprocessing.resource_tracker, sem_unlink() is also absent
on platforms where POSIX semaphores aren't available. Avoid using
sem_unlink() if it, too, does not exist.

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
 		2021-02-08 03:15:51 +00:00
..
dummy bpo-37116: Use PEP 570 syntax for positional-only parameters. (GH-13700) 2019-06-01 11:00:15 +03:00
__init__.py Simplify __all__ in multiprocessing (GH-6856) 2018-07-11 19:22:28 +09:00
connection.py bpo-39850: Add support for abstract sockets in multiprocessing (GH-18866) 2020-03-09 13:48:01 +00:00
context.py bpo-39244: multiprocessing return default start method first on macOS (GH-18625) 2020-05-26 17:54:21 +03:00
forkserver.py bpo-40094: Add os.waitstatus_to_exitcode() (GH-19201) 2020-04-01 18:49:29 +02:00
heap.py bpo-32759: Free unused arenas in multiprocessing.heap (GH-5827) 2018-04-09 17:37:55 +02:00
managers.py Fix two typos in multiprocessing (GH-19571) 2020-04-18 08:58:29 +02:00
pool.py bpo-40443: Remove unused imports in stdlib (GH-19815) 2020-05-01 02:38:00 +02:00
popen_fork.py bpo-40094: Add os.waitstatus_to_exitcode() (GH-19201) 2020-04-01 18:49:29 +02:00
popen_forkserver.py bpo-36888: Add multiprocessing.parent_process() (GH-13247) 2019-05-20 21:37:05 +02:00
popen_spawn_posix.py bpo-36888: Add multiprocessing.parent_process() (GH-13247) 2019-05-20 21:37:05 +02:00
popen_spawn_win32.py bpo-38092: Reduce overhead when using multiprocessing in a Windows virtual environment (GH-16098) 2019-09-13 09:40:19 -07:00
process.py bpo-35727: Use exit code 0 on sys.exit() in multiprocessing.Process. (GH-11538) 2020-02-21 10:33:04 +01:00
queues.py bpo-30966: Add multiprocessing.SimpleQueue.close() (GH-19735) 2020-04-27 09:11:10 -07:00
reduction.py bpo-34521: Fix tests in test_multiprocessing_spawn to use correctly CMSG_SPACE (GH-9613) 2018-09-28 02:51:05 -07:00
resource_sharer.py bpo-40221: Update multiprocessing to use _at_fork_reinit (GH-19511) 2020-04-15 01:35:36 +09:00
resource_tracker.py bpo-40692: Run more test_concurrent_futures tests (GH-20239) 2021-02-08 03:15:51 +00:00
shared_memory.py bpo-41344: Raise ValueError when creating shared memory of size 0 (GH-21556) 2020-08-30 20:03:11 +01:00
sharedctypes.py bpo-32157: Removed explicit quotes around %r and {!r}. (#4582) 2017-11-28 22:54:42 +02:00
spawn.py bpo-39439: Fix multiprocessing spawn path in a venv on Windows (GH-18158) 2020-01-28 21:34:23 +11:00
synchronize.py Fix typo in message from assert statement (GH-21283) 2020-08-17 19:08:55 +05:30
util.py bpo-40221: Update multiprocessing to use _at_fork_reinit (GH-19477) 2020-04-14 22:15:52 +09:00