gdal/autotest/gcore/thread_test.py

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#!/usr/bin/env pytest
# -*- coding: utf-8 -*-
###############################################################################
# $Id$
#
# Project: GDAL/OGR Test Suite
# Purpose: Test Python threading
# Author: Even Rouault <even dot rouault at spatialys.com>
#
###############################################################################
# Copyright (c) 2016, Even Rouault <even dot rouault at spatialys dot com>
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
###############################################################################
import threading
import gdaltest
import pytest
from osgeo import gdal
def my_error_handler(err_type, err_no, err_msg):
# pylint: disable=unused-argument
pass
def thread_test_1_worker(args_dict):
for i in range(1000):
ds = gdal.Open("data/byte.tif")
if (i % 2) == 0:
if ds.GetRasterBand(1).Checksum() != 4672:
args_dict["ret"] = False
else:
ds.GetRasterBand(1).ReadAsArray()
for i in range(1000):
with gdaltest.disable_exceptions(), gdaltest.error_handler():
gdal.Open("i_dont_exist")
def test_thread_test_1():
pytest.importorskip("numpy")
threads = []
args_array = []
for i in range(4):
args_dict = {"ret": True}
t = threading.Thread(target=thread_test_1_worker, args=(args_dict,))
args_array.append(args_dict)
threads.append(t)
t.start()
ret = True
for i in range(4):
threads[i].join()
if not args_array[i]:
ret = False
assert ret