|
| 1 | +import concurrent.futures |
| 2 | +import unittest |
| 3 | +import inspect |
| 4 | +from threading import Thread, Barrier |
| 5 | +from unittest import TestCase |
| 6 | + |
| 7 | +from test.support import threading_helper, Py_GIL_DISABLED |
| 8 | + |
| 9 | +threading_helper.requires_working_threading(module=True) |
| 10 | + |
| 11 | + |
| 12 | +def get_func_annotation(f, b): |
| 13 | + b.wait() |
| 14 | + return inspect.get_annotations(f) |
| 15 | + |
| 16 | + |
| 17 | +def get_func_annotation_dunder(f, b): |
| 18 | + b.wait() |
| 19 | + return f.__annotations__ |
| 20 | + |
| 21 | + |
| 22 | +def set_func_annotation(f, b): |
| 23 | + b.wait() |
| 24 | + f.__annotations__ = {'x': int, 'y': int, 'return': int} |
| 25 | + return f.__annotations__ |
| 26 | + |
| 27 | + |
| 28 | +@unittest.skipUnless(Py_GIL_DISABLED, "Enable only in FT build") |
| 29 | +class TestFTFuncAnnotations(TestCase): |
| 30 | + NUM_THREADS = 8 |
| 31 | + |
| 32 | + def test_concurrent_read(self): |
| 33 | + def f(x: int) -> int: |
| 34 | + return x + 1 |
| 35 | + |
| 36 | + for _ in range(100): |
| 37 | + with concurrent.futures.ThreadPoolExecutor(max_workers=self.NUM_THREADS) as executor: |
| 38 | + b = Barrier(self.NUM_THREADS) |
| 39 | + futures = {executor.submit(get_func_annotation, f, b): i for i in range(self.NUM_THREADS)} |
| 40 | + for fut in concurrent.futures.as_completed(futures): |
| 41 | + annotate = fut.result() |
| 42 | + self.assertIsNotNone(annotate) |
| 43 | + self.assertEqual(annotate, {'x': int, 'return': int}) |
| 44 | + |
| 45 | + with concurrent.futures.ThreadPoolExecutor(max_workers=self.NUM_THREADS) as executor: |
| 46 | + b = Barrier(self.NUM_THREADS) |
| 47 | + futures = {executor.submit(get_func_annotation_dunder, f, b): i for i in range(self.NUM_THREADS)} |
| 48 | + for fut in concurrent.futures.as_completed(futures): |
| 49 | + annotate = fut.result() |
| 50 | + self.assertIsNotNone(annotate) |
| 51 | + self.assertEqual(annotate, {'x': int, 'return': int}) |
| 52 | + |
| 53 | + def test_concurrent_write(self): |
| 54 | + def bar(x: int, y: float) -> float: |
| 55 | + return y ** x |
| 56 | + |
| 57 | + for _ in range(100): |
| 58 | + with concurrent.futures.ThreadPoolExecutor(max_workers=self.NUM_THREADS) as executor: |
| 59 | + b = Barrier(self.NUM_THREADS) |
| 60 | + futures = {executor.submit(set_func_annotation, bar, b): i for i in range(self.NUM_THREADS)} |
| 61 | + for fut in concurrent.futures.as_completed(futures): |
| 62 | + annotate = fut.result() |
| 63 | + self.assertIsNotNone(annotate) |
| 64 | + self.assertEqual(annotate, {'x': int, 'y': int, 'return': int}) |
| 65 | + |
| 66 | + # func_get_annotations returns in-place dict, so bar.__annotations__ should be modified as well |
| 67 | + self.assertEqual(bar.__annotations__, {'x': int, 'y': int, 'return': int}) |
0 commit comments