Dec 5, 2023 · Oct 12, 2023 · Oct 12, 2023 · Oct 12, 2023 · Oct 12, 2023 · Oct 12, 2023
diff --git a/Lib/test/_test_multiprocessing.py b/Lib/test/_test_multiprocessing.py
    @unittest.skipIf(os.name != "posix", "resource_tracker is posix only")
    def test_shared_memory_untracking(self):
        # gh-82300: When a separate Python process accesses shared memory
        # with track=False, it must not register with the resource tracker.
        # with track=False, it must not cause the memory to be deleted
        # when terminating.
        cmd = '''if 1:
            import sys
            from unittest.mock import Mock
            from multiprocessing import resource_tracker
            from multiprocessing.shared_memory import SharedMemory
            resource_tracker.register = Mock(side_effect=AssertionError)
            mem = SharedMemory(create=False, name=sys.argv[1], track=False)
            mem.close()
        '''
        mem = shared_memory.SharedMemory(create=True, size=10)
        rc, out, err = script_helper.assert_python_ok("-c", cmd, mem.name)
        # The resource tracker shares pipes with the subprocess, and so
        # err existing means that the tracker process has terminated now.
        try:
 *_, err = test.support.script_helper.assert_python_ok("-c", cmd,
 mem.name)
 self.assertEqual(err, b'')
 self.assertEqual(rc, 0)
 mem2 = shared_memory.SharedMemory(create=False, name=mem.name)
 mem2.close()
        finally:
            mem.close()
            mem.unlink()
            try:
                mem.unlink()
            except OSError:
                pass

 #
 # Test to verify that `Finalize` works.
Original file line number	Diff line number	Diff line change
Expand Up		@@ -4443,24 +4443,28 @@ def test_shared_memory_cleaned_after_process_termination(self):
		@unittest.skipIf(os.name != "posix", "resource_tracker is posix only")
		def test_shared_memory_untracking(self):
gpshead marked this conversation as resolved. Show resolvedHide resolved
		# gh-82300: When a separate Python process accesses shared memory
		# with track=False, it must not register with the resource tracker.
		# with track=False, it must not cause the memory to be deleted
		# when terminating.
		cmd = '''if 1:
		import sys
		from unittest.mock import Mock
		from multiprocessing import resource_tracker
		from multiprocessing.shared_memory import SharedMemory
		resource_tracker.register = Mock(side_effect=AssertionError)
		mem = SharedMemory(create=False, name=sys.argv[1], track=False)
		mem.close()
		'''
		mem = shared_memory.SharedMemory(create=True, size=10)
		rc, out, err = script_helper.assert_python_ok("-c", cmd, mem.name)
		# The resource tracker shares pipes with the subprocess, and so
		# err existing means that the tracker process has terminated now.
		try:
		*_, err = test.support.script_helper.assert_python_ok("-c", cmd,
		mem.name)
		self.assertEqual(err, b'')
		self.assertEqual(rc, 0)
		mem2 = shared_memory.SharedMemory(create=False, name=mem.name)
gpshead marked this conversation as resolved. Show resolvedHide resolved
		mem2.close()
		finally:
		mem.close()
		mem.unlink()
		try:
		mem.unlink()
		except OSError:
gpshead marked this conversation as resolved. Show resolvedHide resolved
		pass

		#
		# Test to verify that `Finalize` works.
Expand Down