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.adb.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
def _PrepareDevice(device):
if not 'BUILDTYPE' in os.environ:
os.environ['BUILDTYPE'] = 'Release'
return android_profiling_helper.PrepareDeviceForPerf(device)