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# Copyright (c) 2013 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
from telemetry.core.platform import platform_backend
from telemetry.core.platform import proc_util
class CrosPlatformBackend(platform_backend.PlatformBackend):
def __init__(self, cri):
super(CrosPlatformBackend, self).__init__()
self._cri = cri
def StartRawDisplayFrameRateMeasurement(self):
raise NotImplementedError()
def StopRawDisplayFrameRateMeasurement(self):
raise NotImplementedError()
def GetRawDisplayFrameRateMeasurements(self):
raise NotImplementedError()
def IsThermallyThrottled(self):
raise NotImplementedError()
def HasBeenThermallyThrottled(self):
raise NotImplementedError()
def _RunCommand(self, args):
return self._cri.RunCmdOnDevice(args)[0]
def _GetFileContents(self, filename):
try:
return self._cri.RunCmdOnDevice(['cat', filename])[0]
except AssertionError:
return ''
def GetSystemCommitCharge(self):
meminfo_contents = self._GetFileContents('/proc/meminfo')
return proc_util.GetSystemCommitCharge(meminfo_contents)
def GetMemoryStats(self, pid):
status = self._GetFileContents('/proc/%s/status' % pid)
stats = self._GetFileContents('/proc/%s/stat' % pid).split()
return proc_util.GetMemoryStats(status, stats)
def GetIOStats(self, pid):
# There is no '/proc/<pid>/io' file on CrOS platforms
# Returns empty dict as it does in PlatformBackend.
return {}
def GetOSName(self):
return 'chromeos'
def CanFlushIndividualFilesFromSystemCache(self):
return True
def FlushEntireSystemCache(self):
raise NotImplementedError()
def FlushSystemCacheForDirectory(self, directory, ignoring=None):
raise NotImplementedError()
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