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https://github.com/python/cpython
synced 2024-10-14 18:31:31 +00:00
gh-118846: Fix free-threading test failures when run sequentially (#118864)
The free-threaded build currently immortalizes some objects once the first thread is started. This can lead to test failures depending on the order in which tests are run. This PR addresses those failures by suppressing immortalization or skipping the affected tests.
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@ -426,6 +426,7 @@ def test_pickle(self):
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self.assertEqual(lst2, lst)
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self.assertNotEqual(id(lst2), id(lst))
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@support.suppress_immortalization()
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def test_free_after_iterating(self):
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support.check_free_after_iterating(self, iter, self.type2test)
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support.check_free_after_iterating(self, reversed, self.type2test)
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@ -26,7 +26,8 @@
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from test.support import threading_helper
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from test.support import warnings_helper
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from test.support import requires_limited_api
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from test.support import requires_gil_enabled, expected_failure_if_gil_disabled
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from test.support import suppress_immortalization
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from test.support import expected_failure_if_gil_disabled
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from test.support import Py_GIL_DISABLED
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from test.support.script_helper import assert_python_failure, assert_python_ok, run_python_until_end
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try:
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@ -481,6 +482,7 @@ def test_heap_ctype_doc_and_text_signature(self):
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def test_null_type_doc(self):
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self.assertEqual(_testcapi.NullTpDocType.__doc__, None)
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@suppress_immortalization()
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def test_subclass_of_heap_gc_ctype_with_tpdealloc_decrefs_once(self):
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class HeapGcCTypeSubclass(_testcapi.HeapGcCType):
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def __init__(self):
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@ -498,6 +500,7 @@ def __init__(self):
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del subclass_instance
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self.assertEqual(type_refcnt - 1, sys.getrefcount(HeapGcCTypeSubclass))
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@suppress_immortalization()
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def test_subclass_of_heap_gc_ctype_with_del_modifying_dunder_class_only_decrefs_once(self):
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class A(_testcapi.HeapGcCType):
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def __init__(self):
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@ -5014,6 +5014,7 @@ def __new__(cls):
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cls.lst = [2**i for i in range(10000)]
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X.descr
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@support.suppress_immortalization()
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def test_remove_subclass(self):
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# bpo-46417: when the last subclass of a type is deleted,
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# remove_subclass() clears the internal dictionary of subclasses:
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@ -3,7 +3,8 @@
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from test import support
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from test.support import (verbose, refcount_test,
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cpython_only, requires_subprocess,
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requires_gil_enabled)
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requires_gil_enabled, suppress_immortalization,
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Py_GIL_DISABLED)
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from test.support.import_helper import import_module
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from test.support.os_helper import temp_dir, TESTFN, unlink
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from test.support.script_helper import assert_python_ok, make_script
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@ -109,6 +110,7 @@ def test_tuple(self):
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del l
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self.assertEqual(gc.collect(), 2)
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@suppress_immortalization()
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def test_class(self):
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class A:
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pass
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@ -117,6 +119,7 @@ class A:
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del A
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self.assertNotEqual(gc.collect(), 0)
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@suppress_immortalization()
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def test_newstyleclass(self):
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class A(object):
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pass
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@ -133,6 +136,7 @@ class A:
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del a
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self.assertNotEqual(gc.collect(), 0)
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@suppress_immortalization()
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def test_newinstance(self):
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class A(object):
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pass
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@ -219,6 +223,7 @@ class B(object):
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self.fail("didn't find obj in garbage (finalizer)")
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gc.garbage.remove(obj)
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@suppress_immortalization()
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def test_function(self):
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# Tricky: f -> d -> f, code should call d.clear() after the exec to
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# break the cycle.
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@ -561,6 +566,7 @@ def test_get_referents(self):
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self.assertEqual(gc.get_referents(1, 'a', 4j), [])
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@suppress_immortalization()
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def test_is_tracked(self):
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# Atomic built-in types are not tracked, user-defined objects and
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# mutable containers are.
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@ -598,7 +604,9 @@ class UserFloatSlots(float):
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class UserIntSlots(int):
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__slots__ = ()
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self.assertTrue(gc.is_tracked(gc))
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if not Py_GIL_DISABLED:
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# gh-117783: modules may be immortalized in free-threaded build
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self.assertTrue(gc.is_tracked(gc))
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self.assertTrue(gc.is_tracked(UserClass))
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self.assertTrue(gc.is_tracked(UserClass()))
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self.assertTrue(gc.is_tracked(UserInt()))
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@ -1347,6 +1355,10 @@ def callback(ignored):
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junk = []
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i = 0
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detector = GC_Detector()
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if Py_GIL_DISABLED:
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# The free-threaded build doesn't have multiple generations, so
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# just trigger a GC manually.
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gc.collect()
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while not detector.gc_happened:
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i += 1
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if i > 10000:
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@ -1415,6 +1427,10 @@ def __del__(self):
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detector = GC_Detector()
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junk = []
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i = 0
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if Py_GIL_DISABLED:
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# The free-threaded build doesn't have multiple generations, so
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# just trigger a GC manually.
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gc.collect()
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while not detector.gc_happened:
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i += 1
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if i > 10000:
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@ -34,7 +34,7 @@
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except ImportError:
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ThreadPoolExecutor = None
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from test.support import cpython_only, import_helper
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from test.support import cpython_only, import_helper, suppress_immortalization
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from test.support import MISSING_C_DOCSTRINGS, ALWAYS_EQ
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from test.support.import_helper import DirsOnSysPath, ready_to_import
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from test.support.os_helper import TESTFN, temp_cwd
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@ -768,6 +768,7 @@ def test_getfile_builtin_function_or_method(self):
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inspect.getfile(list.append)
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self.assertIn('expected, got', str(e_append.exception))
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@suppress_immortalization()
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def test_getfile_class_without_module(self):
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class CM(type):
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@property
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@ -2430,6 +2431,7 @@ def __getattribute__(self, attr):
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self.assertFalse(test.called)
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@suppress_immortalization()
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def test_cache_does_not_cause_classes_to_persist(self):
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# regression test for gh-118013:
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# check that the internal _shadowed_dict cache does not cause
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@ -4,6 +4,7 @@
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import weakref
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from test.support import gc_collect
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from test.support import import_helper
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from test.support import suppress_immortalization
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from test.support.script_helper import assert_python_ok
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import sys
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@ -103,6 +104,7 @@ def f():
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gc_collect()
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self.assertEqual(f().__dict__["bar"], 4)
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@suppress_immortalization()
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def test_clear_dict_in_ref_cycle(self):
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destroyed = []
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m = ModuleType("foo")
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@ -118,6 +120,7 @@ def __del__(self):
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gc_collect()
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self.assertEqual(destroyed, [1])
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@suppress_immortalization()
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def test_weakref(self):
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m = ModuleType("foo")
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wr = weakref.ref(m)
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@ -1,7 +1,7 @@
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import os
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from pickle import dump
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import sys
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from test.support import captured_stdout, requires_resource
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from test.support import captured_stdout, requires_resource, requires_gil_enabled
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from test.support.os_helper import (TESTFN, rmtree, unlink)
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from test.support.script_helper import assert_python_ok, assert_python_failure
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import textwrap
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@ -301,6 +301,7 @@ def test_loop_caller_importing(self):
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@unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
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'pre-existing trace function throws off measurements')
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@requires_gil_enabled("gh-117783: immortalization of types affects traced method names")
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def test_inst_method_calling(self):
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obj = TracedClass(20)
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self.tracer.runfunc(obj.inst_method_calling, 1)
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@ -334,6 +335,7 @@ def setUp(self):
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@unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
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'pre-existing trace function throws off measurements')
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@requires_gil_enabled("gh-117783: immortalization of types affects traced method names")
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def test_loop_caller_importing(self):
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self.tracer.runfunc(traced_func_importing_caller, 1)
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@ -17,7 +17,7 @@
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from datetime import date, datetime, time, timedelta, timezone
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from functools import cached_property
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from test.support import MISSING_C_DOCSTRINGS
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from test.support import MISSING_C_DOCSTRINGS, requires_gil_enabled
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from test.test_zoneinfo import _support as test_support
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from test.test_zoneinfo._support import OS_ENV_LOCK, TZPATH_TEST_LOCK, ZoneInfoTestBase
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from test.support.import_helper import import_module, CleanImport
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@ -1931,6 +1931,7 @@ def test_cache_location(self):
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self.assertFalse(hasattr(c_zoneinfo.ZoneInfo, "_weak_cache"))
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self.assertTrue(hasattr(py_zoneinfo.ZoneInfo, "_weak_cache"))
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@requires_gil_enabled("gh-117783: types may be immortalized")
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def test_gc_tracked(self):
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import gc
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