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# Copyright 2016 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 systrace.tracing_agents import atrace_agent
from telemetry.internal.platform import tracing_agent
from tracing.trace_data import trace_data
from devil.android.sdk import version_codes
class AtraceTracingAgent(tracing_agent.TracingAgent):
def __init__(self, platform_backend):
super(AtraceTracingAgent, self).__init__(platform_backend)
self._device = platform_backend.device
self._categories = None
self._atrace_agent = atrace_agent.AtraceAgent(
platform_backend.device.build_version_sdk)
self._config = None
@classmethod
def IsSupported(cls, platform_backend):
return (platform_backend.GetOSName() == 'android' and
platform_backend.device.build_version_sdk >
version_codes.JELLY_BEAN_MR1)
def StartAgentTracing(self, config, timeout):
if not config.enable_atrace_trace:
return False
app_name = (','.join(config.atrace_config.app_name) if
isinstance(config.atrace_config.app_name, list) else
config.atrace_config.app_name)
self._config = atrace_agent.AtraceConfig(
config.atrace_config.categories,
trace_buf_size=None, kfuncs=None, app_name=app_name,
compress_trace_data=True, from_file=True,
device_serial_number=str(self._device), trace_time=None,
target='android')
return self._atrace_agent.StartAgentTracing(self._config, timeout)
def StopAgentTracing(self):
self._atrace_agent.StopAgentTracing()
def SupportsExplicitClockSync(self):
return self._atrace_agent.SupportsExplicitClockSync()
def RecordClockSyncMarker(self, sync_id,
record_controller_clock_sync_marker_callback):
return self._atrace_agent.RecordClockSyncMarker(sync_id,
lambda t, sid: record_controller_clock_sync_marker_callback(sid, t))
def CollectAgentTraceData(self, trace_data_builder, timeout=None):
raw_data = self._atrace_agent.GetResults(timeout).raw_data
trace_data_builder.AddTraceFor(trace_data.ATRACE_PART, raw_data)
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