| # Copyright 2024 The Chromium Authors |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| import os |
| import logging |
| import subprocess |
| import platform |
| import time |
| |
| |
| def _GetLockFilePath(server_num): |
| return "/tmp/.X11-unix/X{}".format(server_num) |
| |
| |
| def ShouldStartXvfb(): |
| # TODO(crbug.com/40631966): Note that you can locally change this to return |
| # False to diagnose timeouts for dev server tests. |
| return platform.system() == 'Linux' |
| |
| |
| def StartXvfb(): |
| # Get a number of an available server. |
| server_num = 99 |
| while os.path.exists(_GetLockFilePath(server_num)): |
| server_num += 1 |
| |
| display = ':{}'.format(server_num) |
| xvfb_command = ['Xvfb', display, '-screen', '0', '1024x769x24', '-ac'] |
| xvfb_process = subprocess.Popen(xvfb_command, |
| stdout=subprocess.PIPE, |
| stderr=subprocess.STDOUT) |
| time.sleep(0.2) |
| returncode = xvfb_process.poll() |
| if returncode is None: |
| os.environ['DISPLAY'] = display |
| |
| # Use print instead of logging to ensure that the recommendation to remove |
| # the lock file is displayed regardless of verbosity settings. |
| print('Started Xvfb on display %s.' % display) |
| print('If test fails to exit cleanly, it is recommended that you manually' |
| ' remove the file "%s".\n' % _GetLockFilePath(server_num)) |
| else: |
| logging.error('Xvfb did not start, returncode: %s, stdout:\n%s', returncode, |
| xvfb_process.stdout.read()) |
| xvfb_process = None |
| return xvfb_process |
