| #!/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. |
| |
| # Discarded events that do not get to GPU are invisible for UMA metric and |
| # therefore should be excluded in trace-based metric. This tests ensures that's |
| # the case. |
| |
| import synth_common |
| |
| from synth_common import ms_to_ns |
| |
| trace = synth_common.create_trace() |
| |
| |
| class ChromeScrollHelper: |
| |
| def __init__(self, trace, start_id, start_gesture_id): |
| self.trace = trace |
| self.id = start_id |
| self.gesture_id = start_gesture_id |
| |
| def begin(self, from_ms, dur_ms): |
| self.trace.add_input_latency_event_slice( |
| "GestureScrollBegin", |
| ts=ms_to_ns(from_ms), |
| dur=ms_to_ns(dur_ms), |
| track=self.id, |
| trace_id=self.id, |
| gesture_scroll_id=self.gesture_id, |
| ) |
| self.id += 1 |
| |
| def update(self, from_ms, dur_ms, gets_to_gpu=True): |
| self.trace.add_input_latency_event_slice( |
| "GestureScrollUpdate", |
| ts=ms_to_ns(from_ms), |
| dur=ms_to_ns(dur_ms), |
| track=self.id, |
| trace_id=self.id, |
| gesture_scroll_id=self.gesture_id, |
| gets_to_gpu=gets_to_gpu, |
| is_coalesced=False, |
| ) |
| self.id += 1 |
| |
| def end(self, from_ms, dur_ms): |
| self.trace.add_input_latency_event_slice( |
| "GestureScrollEnd", |
| ts=ms_to_ns(from_ms), |
| dur=ms_to_ns(dur_ms), |
| track=self.id, |
| trace_id=self.id, |
| gesture_scroll_id=self.gesture_id) |
| self.id += 1 |
| self.gesture_id += 1 |
