def __enter__(self):
Hardware.__enter__(self)
if not self._adb.is_root() and self._adb.root():
self._adb.remount()
self._adb.shell('\n'.join([
# turn on airplane mode.
'''
settings put global airplane_mode_on 1''',
# disable GPS.
'''
settings put secure location_providers_allowed -gps
settings put secure location_providers_allowed -wifi
settings put secure location_providers_allowed -network'''
]))
if self._adb.is_root():
# For explanation of variance reducing steps, see
# https://g3doc.corp.google.com/engedu/portal/android/g3doc/learn/develop/performance/content/best/reliable-startup-latency.md?cl=head
self._adb.shell('\n'.join([
# disable bluetooth, wifi, and mobile data.
'''
service call bluetooth_manager 8
svc wifi disable
svc data disable''',
# kill the gui.
'''
setprop ctl.stop media
setprop ctl.stop zygote
setprop ctl.stop surfaceflinger
setprop ctl.stop drm''',
# disable ASLR
'''
echo 0 > /proc/sys/kernel/randomize_va_space''',
]))
self.lock_top_three_cores()
self.lock_adreno_gpu()
else:
print("WARNING: no adb root access; results may be unreliable.",
file=sys.stderr)
return self
def __enter__(self):
Hardware.__enter__(self)
if not self._adb.is_root() and self._adb.root():
self._adb.remount()
self._adb.shell('\n'.join([
# turn on airplane mode.
'''
settings put global airplane_mode_on 1''',
# disable GPS.
'''
settings put secure location_providers_allowed -gps
settings put secure location_providers_allowed -wifi
settings put secure location_providers_allowed -network''']))
if self._adb.is_root():
self._adb.shell('\n'.join([
# disable bluetooth, wifi, and mobile data.
'''
service call bluetooth_manager 8
svc wifi disable
svc data disable''',
# kill the gui.
'''
setprop ctl.stop media
setprop ctl.stop zygote
setprop ctl.stop surfaceflinger
setprop ctl.stop drm''',
# disable ASLR
'''
echo 0 > /proc/sys/kernel/randomize_va_space''',
# stop services which can change clock speed
'''
stop thermal-engine
stop perfd''']))
self.lock_top_three_cores()
else:
print("WARNING: no adb root access; results may be unreliable.",
file=sys.stderr)
return self
def __enter__(self):
self._adb.shell('\n'.join([
# turn on airplane mode.
'''
settings put global airplane_mode_on 1''',
# disable GPS.
'''
for MODE in gps wifi network; do
settings put secure location_providers_allowed -$MODE
done''']))
if self._adb.is_root():
self._adb.shell('\n'.join([
# disable bluetooth, wifi, and mobile data.
'''
service call bluetooth_manager 8
svc wifi disable
svc data disable''',
# kill the gui.
'''
setprop ctl.stop media
setprop ctl.stop zygote
setprop ctl.stop surfaceflinger
setprop ctl.stop drm''',
# disable ASLR
'''
echo 0 > /proc/sys/kernel/randomize_va_space''']))
else:
print("WARNING: no adb root access; results may be unreliable.",
file=sys.stderr)
return Hardware.__enter__(self)
def __enter__(self):
# turn on airplane mode.
self._initial_airplane_mode = \
self._adb.check('settings get global airplane_mode_on')
self._adb.shell('settings put global airplane_mode_on 1')
# disable GPS.
self._initial_location_providers = \
self._adb.check('settings get secure location_providers_allowed')
self._initial_location_providers = \
self._initial_location_providers.replace(',', ' ')
self._adb.shell('''\
for PROVIDER in %s; do
settings put secure location_providers_allowed -$PROVIDER
done''' % self._initial_location_providers)
if self._is_root:
# disable bluetooth, wifi, and mobile data.
# TODO: can we query these initial values?
self._adb.shell('''\
service call bluetooth_manager 8 &&
svc wifi disable &&
svc data disable''')
# kill the gui.
self._adb.shell('''\
setprop ctl.stop media &&
setprop ctl.stop zygote &&
setprop ctl.stop surfaceflinger &&
setprop ctl.stop drm''')
# disable ASLR.
self._initial_ASLR = \
self._adb.check('cat /proc/sys/kernel/randomize_va_space')
self._adb.shell('echo 0 > /proc/sys/kernel/randomize_va_space')
else:
print("WARNING: no adb root access; results may be unreliable.",
file=sys.stderr)
return Hardware.__enter__(self)
