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