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| 1 # Copyright (c) 2013 The Chromium Authors. All rights reserved. | |
| 2 # Use of this source code is governed by a BSD-style license that can be | |
| 3 # found in the LICENSE file. | |
| 4 | |
| 5 # pylint: disable=W0702 | |
| 6 | |
| 7 import os | |
| 8 import signal | |
| 9 import subprocess | |
| 10 import sys | |
| 11 import time | |
| 12 | |
| 13 | |
| 14 def _IsLinux(): | |
| 15 """Return True if on Linux; else False.""" | |
| 16 return sys.platform.startswith('linux') | |
| 17 | |
| 18 | |
| 19 class Xvfb(object): | |
| 20 """Class to start and stop Xvfb if relevant. Nop if not Linux.""" | |
| 21 | |
| 22 def __init__(self): | |
| 23 self._pid = 0 | |
| 24 | |
| 25 def Start(self): | |
| 26 """Start Xvfb and set an appropriate DISPLAY environment. Linux only. | |
| 27 | |
| 28 Copied from tools/code_coverage/coverage_posix.py | |
| 29 """ | |
| 30 if not _IsLinux(): | |
| 31 return | |
| 32 proc = subprocess.Popen(['Xvfb', ':9', '-screen', '0', '1024x768x24', | |
| 33 '-ac'], | |
| 34 stdout=subprocess.PIPE, stderr=subprocess.STDOUT) | |
| 35 self._pid = proc.pid | |
| 36 if not self._pid: | |
| 37 raise Exception('Could not start Xvfb') | |
| 38 os.environ['DISPLAY'] = ':9' | |
| 39 | |
| 40 # Now confirm, giving a chance for it to start if needed. | |
| 41 for _ in range(10): | |
| 42 proc = subprocess.Popen('xdpyinfo >/dev/null', shell=True) | |
| 43 _, retcode = os.waitpid(proc.pid, 0) | |
| 44 if retcode == 0: | |
| 45 break | |
| 46 time.sleep(0.25) | |
| 47 if retcode != 0: | |
| 48 raise Exception('Could not confirm Xvfb happiness') | |
| 49 | |
| 50 def Stop(self): | |
| 51 """Stop Xvfb if needed. Linux only.""" | |
| 52 if self._pid: | |
| 53 try: | |
| 54 os.kill(self._pid, signal.SIGKILL) | |
| 55 except: | |
| 56 pass | |
| 57 del os.environ['DISPLAY'] | |
| 58 self._pid = 0 | |
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Chromium Code Reviews
Issue 2392643003:
Removes files from //build that we don't need (Closed)
