def __init__(self, browser_backend, platform_backend, output_path, state):
super(TCPDumpProfiler, self).__init__(
browser_backend, platform_backend, output_path, state)
if platform_backend.GetOSName() == 'android':
android_prebuilt_profiler_helper.InstallOnDevice(
browser_backend.device, 'tcpdump')
self._platform_profiler = _TCPDumpProfilerAndroid(
browser_backend.device, output_path)
else:
self._platform_profiler = _TCPDumpProfilerLinux(output_path)
def SetGraphicsMemoryTrackingEnabled(self, enabled):
if not enabled:
self.KillApplication('memtrack_helper')
return
if not android_prebuilt_profiler_helper.InstallOnDevice(
self._device, 'memtrack_helper'):
raise Exception('Error installing memtrack_helper.')
self._device.RunShellCommand([
android_prebuilt_profiler_helper.GetDevicePath('memtrack_helper'),
'-d'], as_root=True, check_return=True)
def PrepareDeviceForPerf(device):
"""Set up a device for running perf.
Args:
device: DeviceUtils instance identifying the target device.
Returns:
The path to the installed perf binary on the device.
"""
android_prebuilt_profiler_helper.InstallOnDevice(device, 'perf')
# Make sure kernel pointers are not hidden.
device.WriteFile('/proc/sys/kernel/kptr_restrict', '0', as_root=True)
return android_prebuilt_profiler_helper.GetDevicePath('perf')
def SetGraphicsMemoryTrackingEnabled(self, enabled):
if not enabled:
self.KillApplication('memtrack_helper')
return
if not android_prebuilt_profiler_helper.InstallOnDevice(
self._device, 'memtrack_helper'):
raise Exception('Error installing memtrack_helper.')
try:
cmd = android_prebuilt_profiler_helper.GetDevicePath('memtrack_helper')
cmd += ' -d'
self._device.RunShellCommand(cmd, as_root=True, check_return=True)
except Exception:
logging.exception('New exception caused by DeviceUtils conversion')
raise
def PurgeUnpinnedMemory(self):
"""Purges the unpinned ashmem memory for the whole system.
This can be used to make memory measurements more stable. Requires root.
"""
if not self._can_elevate_privilege:
logging.warning('Cannot run purge_ashmem. Requires a rooted device.')
return
if not android_prebuilt_profiler_helper.InstallOnDevice(
self._device, 'purge_ashmem'):
raise Exception('Error installing purge_ashmem.')
output = self._device.RunShellCommand([
android_prebuilt_profiler_helper.GetDevicePath('purge_ashmem')])
for l in output:
logging.info(l)
def PurgeUnpinnedMemory(self):
"""Purges the unpinned ashmem memory for the whole system.
This can be used to make memory measurements more stable. Requires root.
"""
if not self._can_access_protected_file_contents:
logging.warning('Cannot run purge_ashmem. Requires a rooted device.')
return
if not android_prebuilt_profiler_helper.InstallOnDevice(
self._device, 'purge_ashmem'):
raise Exception('Error installing purge_ashmem.')
try:
output = self._device.RunShellCommand(
android_prebuilt_profiler_helper.GetDevicePath('purge_ashmem'))
except:
logging.exception('New exception caused by DeviceUtils conversion')
raise
for l in output:
logging.info(l)
output_kallsyms = os.path.join(symfs_dir, 'kallsyms')
if not os.path.exists(output_kallsyms):
presentation.device.PullFile('/proc/kallsyms', output_kallsyms)
return output_kallsyms
def PrepareDeviceForPerf(presentation.device):
"""Set up a presentation.device for running perf.
Args:
presentation.device: DeviceUtils instance identifying the target presentation.device.
Returns:
The path to the installed perf binary on the presentation.device.
"""
android_prebuilt_profiler_helper.InstallOnDevice(presentation.device, 'perf')
# Make sure kernel pointers are not hidden.
presentation.device.WriteFile('/proc/sys/kernel/kptr_restrict', '0', as_root=True)
return android_prebuilt_profiler_helper.GetDevicePath('perf')
def GetToolchainBinaryPath(library_file, binary_name):
"""Return the path to an Android toolchain binary on the host.
Args:
library_file: ELF library which is used to identify the used ABI,
architecture and toolchain.
binary_name: Binary to search for, e.g., 'objdump'
Returns:
Full path to binary or None if the binary was not found.
"""