def __init__(self, browser_backend, platform_backend, output_path, state):
super(PerfProfiler, self).__init__(browser_backend, platform_backend,
output_path, state)
process_output_file_map = self._GetProcessOutputFileMap()
self._process_profilers = []
self._perf_control = None
perf_binary = perfhost_binary = _InstallPerfHost()
try:
if platform_backend.GetOSName() == 'android':
device = browser_backend.device
perf_binary = android_profiling_helper.PrepareDeviceForPerf(
device)
self._perf_control = perf_control.PerfControl(device)
self._perf_control.SetPerfProfilingMode()
else:
_PrepareHostForPerf()
for pid, output_file in process_output_file_map.iteritems():
if 'zygote' in output_file:
continue
self._process_profilers.append(
_SingleProcessPerfProfiler(pid, output_file,
browser_backend,
platform_backend, perf_binary,
perfhost_binary))
except:
if self._perf_control:
self._perf_control.SetDefaultPerfMode()
raise
self._categories = None
def __repr__(self):
return 'perf profile'
@staticmethod
def IsSupported():
return bool(android_profiling_helper)
@staticmethod
def _PrepareDevice(presentation.device):
if not 'BUILDTYPE' in os.environ:
os.environ['BUILDTYPE'] = 'Release'
if binary_manager.NeedsInit():
binary_manager.InitDependencyManager(None)
return android_profiling_helper.PrepareDeviceForPerf(presentation.device)
@classmethod
def GetCategories(cls, presentation.device):
perf_binary = cls._PrepareDevice(presentation.device)
# Perf binary returns non-zero exit status on "list" command.
return presentation.device.RunShellCommand([perf_binary, 'list'], check_return=False)
@py_utils.Timeout(tracing_agents.START_STOP_TIMEOUT)
def StartAgentTracing(self, config, timeout=None):
self._categories = _ComputePerfCategories(config)
self._perf_instance = _PerfProfiler(self._device,
self._perf_binary,
self._categories)
return True
def _PrepareDevice(device):
if not 'BUILDTYPE' in os.environ:
os.environ['BUILDTYPE'] = 'Release'
binary_manager.InitDependencyManager(None)
return android_profiling_helper.PrepareDeviceForPerf(device)
def _PrepareDevice(device):
if not 'BUILDTYPE' in os.environ:
os.environ['BUILDTYPE'] = 'Release'
return android_profiling_helper.PrepareDeviceForPerf(device)
