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Issue #23309: Avoid a deadlock at shutdown if a daemon thread is aborted

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while it is holding a lock to a buffered I/O object, and the main thread
tries to use the same I/O object (typically stdout or stderr).  A fatal
error is emitted instead.
This commit is contained in:
Antoine Pitrou 2015-04-13 19:41:47 +02:00
parent f3b990e48c
commit 25f85d4bd5
5 changed files with 94 additions and 15 deletions
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19
Lib/test/script_helper.py
View file

@ -1,6 +1,7 @@
# Common utility functions used by various script execution tests
# e.g. test_cmd_line, test_cmd_line_script and test_runpy
import collections
import importlib
import sys
import os
@ -50,8 +51,12 @@ def _interpreter_requires_environment():
return __cached_interp_requires_environment
_PythonRunResult = collections.namedtuple("_PythonRunResult",
("rc", "out", "err"))
# Executing the interpreter in a subprocess
def _assert_python(expected_success, *args, **env_vars):
def run_python_until_end(*args, **env_vars):
env_required = _interpreter_requires_environment()
if '__isolated' in env_vars:
isolated = env_vars.pop('__isolated')
@ -85,12 +90,16 @@ def _assert_python(expected_success, *args, **env_vars):
p.stderr.close()
rc = p.returncode
err = strip_python_stderr(err)
if (rc and expected_success) or (not rc and not expected_success):
return _PythonRunResult(rc, out, err), cmd_line
def _assert_python(expected_success, *args, **env_vars):
res, cmd_line = run_python_until_end(*args, **env_vars)
if (res.rc and expected_success) or (not res.rc and not expected_success):
raise AssertionError(
"Process return code is %d, command line was: %r, "
"stderr follows:\n%s" % (rc, cmd_line,
err.decode('ascii', 'ignore')))
return rc, out, err
"stderr follows:\n%s" % (res.rc, cmd_line,
res.err.decode('ascii', 'ignore')))
return res
def assert_python_ok(*args, **env_vars):
"""