Coverage for tests/test_threads.py: 28%
26 statements
« prev ^ index » next coverage.py v7.4.0, created at 2024-01-19 11:15 +0000
« prev ^ index » next coverage.py v7.4.0, created at 2024-01-19 11:15 +0000
1# This file is part of utils.
2#
3# Developed for the LSST Data Management System.
4# This product includes software developed by the LSST Project
5# (https://www.lsst.org).
6# See the COPYRIGHT file at the top-level directory of this distribution
7# for details of code ownership.
8#
9# This program is free software: you can redistribute it and/or modify
10# it under the terms of the GNU General Public License as published by
11# the Free Software Foundation, either version 3 of the License, or
12# (at your option) any later version.
13#
14# This program is distributed in the hope that it will be useful,
15# but WITHOUT ANY WARRANTY; without even the implied warranty of
16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17# GNU General Public License for more details.
18#
19# You should have received a copy of the GNU General Public License
20# along with this program. If not, see <https://www.gnu.org/licenses/>.
22import os
23import unittest
25from lsst.utils.threads import disable_implicit_threading, set_thread_envvars
27try:
28 import numexpr
29except ImportError:
30 numexpr = None
31try:
32 import threadpoolctl
33except ImportError:
34 threadpoolctl = None
37class ThreadsTestCase(unittest.TestCase):
38 """Tests for threads."""
40 def testDisable(self):
41 set_thread_envvars(2, override=True)
42 self.assertEqual(os.environ["OMP_NUM_THREADS"], "2")
43 set_thread_envvars(3, override=False)
44 self.assertEqual(os.environ["OMP_NUM_THREADS"], "2")
46 disable_implicit_threading()
47 self.assertEqual(os.environ["OMP_NUM_THREADS"], "1")
48 self.assertEqual(os.environ["OMP_PROC_BIND"], "false")
50 # Check that we have only one thread.
51 if numexpr:
52 self.assertEqual(numexpr.utils.get_num_threads(), 1)
53 if threadpoolctl:
54 info = threadpoolctl.threadpool_info()
55 for api in info:
56 self.assertEqual(api["num_threads"], 1, f"API: {api}")
59if __name__ == "__main__":
60 unittest.main()