| #!/usr/bin/env python3 |
| # Copyright 2023 The Chromium Authors |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| from os import sys |
| |
| import synth_common |
| from synth_common import s_to_ns |
| |
| trace = synth_common.create_trace() |
| |
| trace.add_chrome_metadata(os_name="Android") |
| |
| track1 = 1234 |
| gpu_track = 7890 |
| |
| trace.add_process_track_descriptor(track1, pid=0) |
| trace.add_process_track_descriptor(gpu_track, pid=4) |
| |
| trace.add_rail_mode_slice( |
| ts=0, |
| dur=s_to_ns(1), |
| track=track1, |
| mode=trace.prototypes.ChromeRAILMode.RAIL_MODE_RESPONSE) |
| trace.add_rail_mode_slice( |
| ts=s_to_ns(1), |
| dur=-1, |
| track=track1, |
| mode=trace.prototypes.ChromeRAILMode.RAIL_MODE_IDLE) |
| |
| # Generate an extra trace event long after events on the renderer process have |
| # ceased to ensure that the RAIL mode is extended to the end of the process |
| # rather than the end of the trace itself. |
| trace.add_track_event_slice("VSync", ts=s_to_ns(25), dur=10, track=gpu_track) |
| |
| sys.stdout.buffer.write(trace.trace.SerializeToString()) |