1-- 2-- Copyright 2023 The Android Open Source Project 3-- 4-- Licensed under the Apache License, Version 2.0 (the "License"); 5-- you may not use this file except in compliance with the License. 6-- You may obtain a copy of the License at 7-- 8-- https://www.apache.org/licenses/LICENSE-2.0 9-- 10-- Unless required by applicable law or agreed to in writing, software 11-- distributed under the License is distributed on an "AS IS" BASIS, 12-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13-- See the License for the specific language governing permissions and 14-- limitations under the License. 15 16-- Definition of `trace_bounds` table. The values are being filled by Trace 17-- Processor when parsing the trace. Can't be a Perfetto table because it has 18-- to be mutable. 19-- It is recommended to depend on the `trace_start()` and `trace_end()` 20-- functions rather than directly on `trace_bounds`. 21CREATE TABLE trace_bounds AS 22SELECT 0 AS start_ts, 0 AS end_ts; 23 24-- Fetch start of the trace. 25CREATE PERFETTO FUNCTION trace_start() 26-- Start of the trace in nanoseconds. 27RETURNS LONG AS 28SELECT start_ts FROM trace_bounds; 29 30-- Fetch end of the trace. 31CREATE PERFETTO FUNCTION trace_end() 32-- End of the trace in nanoseconds. 33RETURNS LONG AS 34SELECT end_ts FROM trace_bounds; 35 36-- Fetch duration of the trace. 37CREATE PERFETTO FUNCTION trace_dur() 38-- Duration of the trace in nanoseconds. 39RETURNS LONG AS 40SELECT trace_end() - trace_start();