def run_executable(cmd, build_dir, env):
"""Runs an executable within a xvfb buffer on linux or normally on other
platforms.
Requires that both xvfb and icewm are installed on linux.
Detects recursion with an environment variable and do not create a recursive X
buffer if present.
"""
# First look if we are inside a display.
if env.get('_CHROMIUM_INSIDE_XVFB') == '1':
# No need to recurse.
return test_env.run_executable(cmd, env)
pid = None
xvfb = 'Xvfb'
try:
if sys.platform == 'linux2':
# Defaults to X display 9.
display = ':9'
pid = start_xvfb(xvfb, display)
env['DISPLAY'] = display
if not wait_for_xvfb(os.path.join(build_dir, 'xdisplaycheck'), env):
return 3
# Inhibit recursion.
env['_CHROMIUM_INSIDE_XVFB'] = '1'
# Some ChromeOS tests need a window manager. Technically, it could be
# another script but that would be overkill.
subprocess.Popen(
'icewm', stdout=subprocess.PIPE, stderr=subprocess.STDOUT, env=env)
return test_env.run_executable(cmd, env)
finally:
if pid:
kill(pid)
def run_executable(cmd, env):
"""Runs an executable within Xvfb on Linux or normally on other platforms.
Returns the exit code of the specified commandline, or 1 on failure.
"""
if sys.platform == 'linux2':
if env.get('_CHROMIUM_INSIDE_XVFB') == '1':
openbox_proc = None
xcompmgr_proc = None
try:
# Some ChromeOS tests need a window manager.
openbox_proc = subprocess.Popen('openbox', stdout=subprocess.PIPE,
stderr=subprocess.STDOUT, env=env)
# Some tests need a compositing wm to make use of transparent visuals.
xcompmgr_proc = subprocess.Popen('xcompmgr', stdout=subprocess.PIPE,
stderr=subprocess.STDOUT, env=env)
return test_env.run_executable(cmd, env)
except OSError as e:
print >> sys.stderr, 'Failed to start Xvfb or Openbox: %s' % str(e)
return 1
finally:
kill(openbox_proc)
kill(xcompmgr_proc)
else:
env['_CHROMIUM_INSIDE_XVFB'] = '1'
return subprocess.call(['xvfb-run', '-a', "--server-args=-screen 0 "
"1280x800x24 -ac -nolisten tcp -dpi 96",
__file__] + cmd, env=env)
else:
return test_env.run_executable(cmd, env)
def run_executable(cmd, build_dir, env):
"""Runs an executable within a xvfb buffer on linux or normally on other
platforms.
Requires that both xvfb and openbox are installed on linux.
Detects recursion with an environment variable and do not create a recursive X
buffer if present.
"""
# First look if we are inside a display.
if env.get('_CHROMIUM_INSIDE_XVFB') == '1':
# No need to recurse.
return test_env.run_executable(cmd, env)
xvfb_proc = None
xvfb = 'Xvfb'
try:
if sys.platform == 'linux2':
# Defaults to X display 9.
display = ':9'
xvfb_proc = start_xvfb(xvfb, display)
if not xvfb_proc or not xvfb_proc.pid:
return 1
env['DISPLAY'] = display
if not wait_for_xvfb(os.path.join(build_dir, 'xdisplaycheck'), env):
rc = xvfb_proc.poll()
if rc is None:
print 'Xvfb still running, stopping.'
xvfb_proc.terminate()
else:
print 'Xvfb exited, code %d' % rc
print 'Xvfb output:'
for l in xvfb_proc.communicate()[0].splitlines():
print '> %s' % l
return 3
# Inhibit recursion.
env['_CHROMIUM_INSIDE_XVFB'] = '1'
# Some ChromeOS tests need a window manager. Technically, it could be
# another script but that would be overkill.
try:
wm_cmd = ['openbox']
subprocess.Popen(
wm_cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, env=env)
except OSError:
print >> sys.stderr, 'Failed to run %s' % ' '.join(wm_cmd)
return 1
return test_env.run_executable(cmd, env)
finally:
# When the X server dies, it takes down the window manager with it.
if xvfb_proc and xvfb_proc.pid:
kill(xvfb_proc.pid)
def run_executable(cmd, env):
"""Runs an executable within Xvfb on Linux or normally on other platforms.
Returns the exit code of the specified commandline, or 1 on failure.
"""
# It might seem counterintuitive to support a --no-xvfb flag in a script
# whose only job is to start xvfb, but doing so allows us to consolidate
# the logic in the layers of buildbot scripts so that we *always* use
# xvfb by default and don't have to worry about the distinction, it
# can remain solely under the control of the test invocation itself.
use_xvfb = True
if '--no-xvfb' in cmd:
use_xvfb = False
cmd.remove('--no-xvfb')
if sys.platform == 'linux2' and use_xvfb:
if env.get('_CHROMIUM_INSIDE_XVFB') == '1':
openbox_proc = None
xcompmgr_proc = None
try:
# Some ChromeOS tests need a window manager.
openbox_proc = subprocess.Popen('openbox', stdout=subprocess.PIPE,
stderr=subprocess.STDOUT, env=env)
# Some tests need a compositing wm to make use of transparent visuals.
xcompmgr_proc = subprocess.Popen('xcompmgr', stdout=subprocess.PIPE,
stderr=subprocess.STDOUT, env=env)
return test_env.run_executable(cmd, env)
except OSError as e:
print >> sys.stderr, 'Failed to start Xvfb or Openbox: %s' % str(e)
return 1
finally:
kill(openbox_proc)
kill(xcompmgr_proc)
else:
env['_CHROMIUM_INSIDE_XVFB'] = '1'
xvfb_script = __file__
if xvfb_script.endswith('.pyc'):
xvfb_script = xvfb_script[:-1]
return subprocess.call(['xvfb-run', '-a', "--server-args=-screen 0 "
"1280x800x24 -ac -nolisten tcp -dpi 96",
xvfb_script] + cmd, env=env)
else:
return test_env.run_executable(cmd, env)
def run_executable(cmd, build_dir, env):
"""Runs an executable within Xvfb on Linux or normally on other platforms.
Returns the exit code of the specified commandline, or 1 on failure.
"""
xvfb = None
openbox = None
if should_start_xvfb(env):
(xvfb, openbox) = start_xvfb(env, build_dir)
if not xvfb or not xvfb.pid or not openbox or not openbox.pid:
return 1
try:
return test_env.run_executable(cmd, env)
finally:
kill(xvfb)
kill(openbox)
def run_executable(cmd, build_dir, env):
"""Runs an executable within a xvfb buffer on linux or normally on other
platforms.
Requires that both xvfb and icewm are installed on linux.
"""
pid = None
xvfb = 'Xvfb'
try:
if sys.platform == 'linux2':
# Defaults to X display 9.
display = ':9'
pid = start_xvfb(xvfb, display)
env['DISPLAY'] = display
if not wait_for_xvfb(os.path.join(build_dir, 'xdisplaycheck'), env):
return 3
# Some ChromeOS tests need a window manager. Technically, it could be
# another script but that would be overkill.
subprocess.Popen(
'icewm', stdout=subprocess.PIPE, stderr=subprocess.STDOUT, env=env)
return test_env.run_executable(cmd, env)
finally:
if pid:
kill(pid)
def _run_with_weston(cmd, env, stdoutfile):
weston_proc = None
try:
signal.signal(signal.SIGTERM, raise_weston_error)
signal.signal(signal.SIGINT, raise_weston_error)
dbus_pid = launch_dbus(env)
# The bundled weston (//third_party/weston) is used by Linux Ozone Wayland
# CI and CQ testers and compiled by //ui/ozone/platform/wayland whenever
# there is a dependency on the Ozone/Wayland and use_bundled_weston is set
# in gn args. However, some tests do not require Wayland or do not use
# //ui/ozone at all, but still have --use-weston flag set by the
# OZONE_WAYLAND variant (see //testing/buildbot/variants.pyl). This results
# in failures and those tests cannot be run because of the exception that
# informs about missing weston binary. Thus, to overcome the issue before
# a better solution is found, add a check for the "weston" binary here and
# run tests without Wayland compositor if the weston binary is not found.
# TODO(https://1178788): find a better solution.
if not os.path.isfile("./weston"):
print('Weston is not available. Starting without Wayland compositor')
return test_env.run_executable(cmd, env, stdoutfile)
# Set $XDG_RUNTIME_DIR if it is not set.
_set_xdg_runtime_dir(env)
# Weston is compiled along with the Ozone/Wayland platform, and is
# fetched as data deps. Thus, run it from the current directory.
#
# Weston is used with the following flags:
# 1) --backend=headless-backend.so - runs Weston in a headless mode
# that does not require a real GPU card.
# 2) --idle-time=0 - disables idle timeout, which prevents Weston
# to enter idle state. Otherwise, Weston stops to send frame callbacks,
# and tests start to time out (this typically happens after 300 seconds -
# the default time after which Weston enters the idle state).
# 3) --width && --height set size of a virtual display: we need to set
# an adequate size so that tests can have more room for managing size
# of windows.
# 4) --use-gl - Runs Weston using hardware acceleration instead of
# SwiftShader.
weston_cmd = ['./weston', '--backend=headless-backend.so', '--idle-time=0',
'--width=1024', '--height=768', '--modules=test-plugin.so']
if '--weston-use-gl' in cmd:
weston_cmd.append('--use-gl')
cmd.remove('--weston-use-gl')
if '--weston-debug-logging' in cmd:
cmd.remove('--weston-debug-logging')
env = copy.deepcopy(env)
env['WAYLAND_DEBUG'] = '1'
weston_proc_display = None
for _ in range(10):
weston_proc = subprocess.Popen(
weston_cmd,
stderr=subprocess.STDOUT, env=env)
# Get the $WAYLAND_DISPLAY set by Weston and pass it to the test launcher.
# Please note that this env variable is local for the process. That's the
# reason we have to read it from Weston separately.
weston_proc_display = _get_display_from_weston(weston_proc.pid)
if weston_proc_display is not None:
break # Weston could launch and we found the display.
# If we couldn't find the display after 10 tries, raise an exception.
if weston_proc_display is None:
raise _WestonProcessError('Failed to start Weston.')
env['WAYLAND_DISPLAY'] = weston_proc_display
return test_env.run_executable(cmd, env, stdoutfile)
except OSError as e:
print('Failed to start Weston: %s\n' % str(e), file=sys.stderr)
return 1
except _WestonProcessError as e:
print('Weston fail: %s\n' % str(e), file=sys.stderr)
return 1
finally:
kill(weston_proc, 'weston')
# dbus-daemon is not a subprocess, so we can't SIGTERM+waitpid() on it.
# To ensure it exits, use SIGKILL which should be safe since all other
# processes that it would have been servicing have exited.
if dbus_pid:
os.kill(dbus_pid, signal.SIGKILL)
def _run_with_xvfb(cmd, env, stdoutfile, use_openbox, use_xcompmgr):
openbox_proc = None
xcompmgr_proc = None
xvfb_proc = None
xwmstartupcheck_proc = None
xvfb_ready = MutableBoolean()
def set_xvfb_ready(*_):
xvfb_ready.setvalue(True)
dbus_pid = None
try:
signal.signal(signal.SIGTERM, raise_xvfb_error)
signal.signal(signal.SIGINT, raise_xvfb_error)
# Before [1], the maximum number of X11 clients was 256. After, the default
# limit is 256 with a configurable maximum of 512. On systems with a large
# number of CPUs, the old limit of 256 may be hit for certain test suites
# [2] [3], so we set the limit to 512 when possible. This flag is not
# available on Ubuntu 16.04 or 18.04, so a feature check is required. Xvfb
# does not have a '-version' option, so checking the '-help' output is
# required.
#
# [1] d206c240c0b85c4da44f073d6e9a692afb6b96d2
# [2] https://crbug.com/1187948
# [3] https://crbug.com/1120107
xvfb_help = subprocess.check_output(
['Xvfb', '-help'], stderr=subprocess.STDOUT).decode('utf8')
# Due to race condition for display number, Xvfb might fail to run.
# If it does fail, try again up to 10 times, similarly to xvfb-run.
for _ in range(10):
xvfb_ready.setvalue(False)
display = find_display()
xvfb_cmd = ['Xvfb', display, '-screen', '0', '1280x800x24', '-ac',
'-nolisten', 'tcp', '-dpi', '96', '+extension', 'RANDR']
if '-maxclients' in xvfb_help:
xvfb_cmd += ['-maxclients', '512']
# Sets SIGUSR1 to ignore for Xvfb to signal current process
# when it is ready. Due to race condition, USR1 signal could be sent
# before the process resets the signal handler, we cannot rely on
# signal handler to change on time.
signal.signal(signal.SIGUSR1, signal.SIG_IGN)
xvfb_proc = subprocess.Popen(xvfb_cmd, stderr=subprocess.STDOUT, env=env)
signal.signal(signal.SIGUSR1, set_xvfb_ready)
for _ in range(10):
time.sleep(.1) # gives Xvfb time to start or fail.
if xvfb_ready.getvalue() or xvfb_proc.poll() is not None:
break # xvfb sent ready signal, or already failed and stopped.
if xvfb_proc.poll() is None:
break # xvfb is running, can proceed.
if xvfb_proc.poll() is not None:
raise _XvfbProcessError('Failed to start after 10 tries')
env['DISPLAY'] = display
# Set dummy variable for scripts.
env['XVFB_DISPLAY'] = display
dbus_pid = launch_dbus(env)
if use_openbox:
# This is not ideal, but x11_unittests require that (other X11 tests have
# a race with the openbox as well, but they take more time to initialize.
# And thus, they do no time out compate to the x11_unittests that are
# quick enough to start up before openbox is ready.
# TODO(dpranke): remove this nasty hack once the test() template is
# reworked.
wait_for_openbox = False
wait_openbox_program = './xwmstartupcheck'
if not os.path.isfile(wait_openbox_program):
wait_for_openbox = False
# Creates a dummy window that waits for a ReparentNotify event that is
# sent whenever Openbox WM starts. Must be started before the OpenBox WM
# so that it does not miss the event. This helper program is located in
# the current build directory. The program terminates automatically after
# 30 seconds of waiting for the event.
if wait_for_openbox:
xwmstartupcheck_proc = subprocess.Popen(
wait_openbox_program, stderr=subprocess.STDOUT, env=env)
openbox_proc = subprocess.Popen(
['openbox', '--sm-disable'], stderr=subprocess.STDOUT, env=env)
# Wait until execution is done. Does not block if the process has already
# been terminated. In that case, it's safe to read the return value.
if wait_for_openbox:
xwmstartupcheck_proc.wait()
if xwmstartupcheck_proc.returncode != 0:
raise _XvfbProcessError('Failed to get OpenBox up.')
if use_xcompmgr:
xcompmgr_proc = subprocess.Popen(
'xcompmgr', stderr=subprocess.STDOUT, env=env)
return test_env.run_executable(cmd, env, stdoutfile)
except OSError as e:
print('Failed to start Xvfb or Openbox: %s\n' % str(e), file=sys.stderr)
return 1
except _XvfbProcessError as e:
print('Xvfb fail: %s\n' % str(e), file=sys.stderr)
return 1
finally:
kill(openbox_proc, 'openbox')
kill(xcompmgr_proc, 'xcompmgr')
kill(xvfb_proc, 'Xvfb')
# dbus-daemon is not a subprocess, so we can't SIGTERM+waitpid() on it.
# To ensure it exits, use SIGKILL which should be safe since all other
# processes that it would have been servicing have exited.
if dbus_pid:
os.kill(dbus_pid, signal.SIGKILL)
def _run_with_xvfb(cmd, env, stdoutfile, use_openbox, use_xcompmgr):
env['_CHROMIUM_INSIDE_XVFB'] = '1'
openbox_proc = None
xcompmgr_proc = None
xvfb_proc = None
xvfb_ready = MutableBoolean()
def set_xvfb_ready(*_):
xvfb_ready.setvalue(True)
try:
signal.signal(signal.SIGTERM, raise_xvfb_error)
signal.signal(signal.SIGINT, raise_xvfb_error)
# Due to race condition for display number, Xvfb might fail to run.
# If it does fail, try again up to 10 times, similarly to xvfb-run.
for _ in range(10):
xvfb_ready.setvalue(False)
display = find_display()
# Sets SIGUSR1 to ignore for Xvfb to signal current process
# when it is ready. Due to race condition, USR1 signal could be sent
# before the process resets the signal handler, we cannot rely on
# signal handler to change on time.
signal.signal(signal.SIGUSR1, signal.SIG_IGN)
xvfb_proc = subprocess.Popen(
['Xvfb', display, '-screen', '0', '1280x800x24', '-ac',
'-nolisten', 'tcp', '-dpi', '96', '+extension', 'RANDR'],
stderr=subprocess.STDOUT, env=env)
signal.signal(signal.SIGUSR1, set_xvfb_ready)
for _ in range(10):
time.sleep(.1) # gives Xvfb time to start or fail.
if xvfb_ready.getvalue() or xvfb_proc.poll() is not None:
break # xvfb sent ready signal, or already failed and stopped.
if xvfb_proc.poll() is None:
break # xvfb is running, can proceed.
if xvfb_proc.poll() is not None:
raise _XvfbProcessError('Failed to start after 10 tries')
env['DISPLAY'] = display
dbus_pid = launch_dbus(env)
if use_openbox:
openbox_proc = subprocess.Popen(
'openbox', stderr=subprocess.STDOUT, env=env)
if use_xcompmgr:
xcompmgr_proc = subprocess.Popen(
'xcompmgr', stderr=subprocess.STDOUT, env=env)
return test_env.run_executable(cmd, env, stdoutfile)
except OSError as e:
print >> sys.stderr, 'Failed to start Xvfb or Openbox: %s' % str(e)
return 1
except _XvfbProcessError as e:
print >> sys.stderr, 'Xvfb fail: %s' % str(e)
return 1
finally:
kill(openbox_proc, 'openbox')
kill(xcompmgr_proc, 'xcompmgr')
kill(xvfb_proc, 'Xvfb')
# dbus-daemon is not a subprocess, so we can't SIGTERM+waitpid() on it.
# To ensure it exits, use SIGKILL which should be safe since all other
# processes that it would have been servicing have exited.
if dbus_pid:
os.kill(dbus_pid, signal.SIGKILL)
def _run_with_xvfb(cmd, env, stdoutfile, use_openbox, use_xcompmgr):
env['_CHROMIUM_INSIDE_XVFB'] = '1'
openbox_proc = None
xcompmgr_proc = None
xvfb_proc = None
xwmstartupcheck_proc = None
xvfb_ready = MutableBoolean()
def set_xvfb_ready(*_):
xvfb_ready.setvalue(True)
try:
signal.signal(signal.SIGTERM, raise_xvfb_error)
signal.signal(signal.SIGINT, raise_xvfb_error)
# Due to race condition for display number, Xvfb might fail to run.
# If it does fail, try again up to 10 times, similarly to xvfb-run.
for _ in range(10):
xvfb_ready.setvalue(False)
display = find_display()
# Sets SIGUSR1 to ignore for Xvfb to signal current process
# when it is ready. Due to race condition, USR1 signal could be sent
# before the process resets the signal handler, we cannot rely on
# signal handler to change on time.
signal.signal(signal.SIGUSR1, signal.SIG_IGN)
xvfb_proc = subprocess.Popen([
'Xvfb', display, '-screen', '0', '1280x800x24', '-ac',
'-nolisten', 'tcp', '-dpi', '96', '+extension', 'RANDR'
],
stderr=subprocess.STDOUT,
env=env)
signal.signal(signal.SIGUSR1, set_xvfb_ready)
for _ in range(10):
time.sleep(.1) # gives Xvfb time to start or fail.
if xvfb_ready.getvalue() or xvfb_proc.poll() is not None:
break # xvfb sent ready signal, or already failed and stopped.
if xvfb_proc.poll() is None:
break # xvfb is running, can proceed.
if xvfb_proc.poll() is not None:
raise _XvfbProcessError('Failed to start after 10 tries')
env['DISPLAY'] = display
dbus_pid = launch_dbus(env)
if use_openbox:
# This is not ideal, but x11_unittests require that (other X11 tests have
# a race with the openbox as well, but they take more time to initialize.
# And thus, they do no time out compate to the x11_unittests that are
# quick enough to start up before openbox is ready.
# TODO(dpranke): remove this nasty hack once the test() template is
# reworked.
wait_for_openbox = False
wait_openbox_program = './xwmstartupcheck'
if not os.path.isfile(wait_openbox_program):
wait_for_openbox = False
# Creates a dummy window that waits for a ReparentNotify event that is
# sent whenever Openbox WM starts. Must be started before the OpenBox WM
# so that it does not miss the event. This helper program is located in
# the current build directory. The program terminates automatically after
# 30 seconds of waiting for the event.
if wait_for_openbox:
xwmstartupcheck_proc = subprocess.Popen(
wait_openbox_program, stderr=subprocess.STDOUT, env=env)
openbox_proc = subprocess.Popen(['openbox', '--sm-disable'],
stderr=subprocess.STDOUT,
env=env)
# Wait until execution is done. Does not block if the process has already
# been terminated. In that case, it's safe to read the return value.
if wait_for_openbox:
xwmstartupcheck_proc.wait()
if xwmstartupcheck_proc.returncode is not 0:
raise _XvfbProcessError('Failed to get OpenBox up.')
if use_xcompmgr:
xcompmgr_proc = subprocess.Popen('xcompmgr',
stderr=subprocess.STDOUT,
env=env)
return test_env.run_executable(cmd, env, stdoutfile)
except OSError as e:
print('Failed to start Xvfb or Openbox: %s\n' % str(e),
file=sys.stderr)
return 1
except _XvfbProcessError as e:
print('Xvfb fail: %s\n' % str(e), file=sys.stderr)
return 1
finally:
kill(openbox_proc, 'openbox')
kill(xcompmgr_proc, 'xcompmgr')
kill(xvfb_proc, 'Xvfb')
# dbus-daemon is not a subprocess, so we can't SIGTERM+waitpid() on it.
# To ensure it exits, use SIGKILL which should be safe since all other
# processes that it would have been servicing have exited.
if dbus_pid:
os.kill(dbus_pid, signal.SIGKILL)
def run_executable(cmd,
env,
stdoutfile=None,
use_openbox=True,
use_xcompmgr=True):
"""Runs an executable within Xvfb on Linux or normally on other platforms.
The method sets SIGUSR1 handler for Xvfb to return SIGUSR1
when it is ready for connections.
https://www.x.org/archive/X11R7.5/doc/man/man1/Xserver.1.html under Signals.
Args:
cmd: Command to be executed.
env: A copy of environment variables, "DISPLAY" and
"_CHROMIUM_INSIDE_XVFB" will be set if Xvfb is used.
stdoutfile: If provided, symbolization via script is disabled and stdout
is written to this file as well as to stdout.
use_openbox: A flag to use openbox process.
Some ChromeOS tests need a window manager.
use_xcompmgr: A flag to use xcompmgr process.
Some tests need a compositing wm to make use of transparent visuals.
Returns:
the exit code of the specified commandline, or 1 on failure.
"""
# It might seem counterintuitive to support a --no-xvfb flag in a script
# whose only job is to start xvfb, but doing so allows us to consolidate
# the logic in the layers of buildbot scripts so that we *always* use
# xvfb by default and don't have to worry about the distinction, it
# can remain solely under the control of the test invocation itself.
use_xvfb = True
if '--no-xvfb' in cmd:
use_xvfb = False
cmd.remove('--no-xvfb')
if sys.platform == 'linux2' and use_xvfb:
env['_CHROMIUM_INSIDE_XVFB'] = '1'
openbox_proc = None
xcompmgr_proc = None
xvfb_proc = None
xvfb_ready = MutableBoolean()
def set_xvfb_ready(*_):
xvfb_ready.setvalue(True)
try:
signal.signal(signal.SIGTERM, raise_xvfb_error)
signal.signal(signal.SIGINT, raise_xvfb_error)
# Due to race condition for display number, Xvfb might fail to run.
# If it does fail, try again up to 10 times, similarly to xvfb-run.
for _ in range(10):
xvfb_ready.setvalue(False)
display = find_display()
# Sets SIGUSR1 to ignore for Xvfb to signal current process
# when it is ready. Due to race condition, USR1 signal could be sent
# before the process resets the signal handler, we cannot rely on
# signal handler to change on time.
signal.signal(signal.SIGUSR1, signal.SIG_IGN)
xvfb_proc = subprocess.Popen([
'Xvfb', display, '-screen', '0', '1280x800x24', '-ac',
'-nolisten', 'tcp', '-dpi', '96', '+extension', 'RANDR'
],
stderr=subprocess.STDOUT,
env=env)
signal.signal(signal.SIGUSR1, set_xvfb_ready)
for _ in range(10):
time.sleep(.1) # gives Xvfb time to start or fail.
if xvfb_ready.getvalue() or xvfb_proc.poll() is not None:
break # xvfb sent ready signal, or already failed and stopped.
if xvfb_proc.poll() is None:
break # xvfb is running, can proceed.
if xvfb_proc.poll() is not None:
raise _XvfbProcessError('Failed to start after 10 tries')
env['DISPLAY'] = display
if use_openbox:
openbox_proc = subprocess.Popen('openbox',
stderr=subprocess.STDOUT,
env=env)
if use_xcompmgr:
xcompmgr_proc = subprocess.Popen('xcompmgr',
stderr=subprocess.STDOUT,
env=env)
return test_env.run_executable(cmd, env, stdoutfile)
except OSError as e:
print >> sys.stderr, 'Failed to start Xvfb or Openbox: %s' % str(e)
return 1
except _XvfbProcessError as e:
print >> sys.stderr, 'Xvfb fail: %s' % str(e)
return 1
finally:
kill(openbox_proc)
kill(xcompmgr_proc)
kill(xvfb_proc)
else:
return test_env.run_executable(cmd, env, stdoutfile)