--
-- Copyright 2019 The Android Open Source Project
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
--     https://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.

INCLUDE PERFETTO MODULE android.frames.timeline;
INCLUDE PERFETTO MODULE android.startup.startup_events;
INCLUDE PERFETTO MODULE slices.with_context;

CREATE PERFETTO TABLE _startups_maxsdk28 AS
-- Warm and cold starts only are based on the launching slice
WITH warm_and_cold AS (
  SELECT
    le.ts,
    le.ts_end AS ts_end,
    package_name AS package,
    NULL AS startup_type
  FROM _startup_events le
),
-- Hot starts don’t have a launching slice so we use activityResume as a
-- proxy.
--
-- Note that this implementation will also count warm and cold starts but
-- we will remove those below.
maybe_hot AS (
  SELECT
    sl.ts,
    rs.ts + rs.dur AS ts_end,
    -- We use the process name as the package as we have no better option.
    COALESCE(process_name, thread_name, 'unknown') AS package,
    "hot" AS startup_type
  FROM thread_slice sl
  JOIN android_first_frame_after(sl.ts) rs
  WHERE name = 'activityResume'
    AND sl.is_main_thread
    -- Remove any launches here where the activityResume slices happens during
    -- a warm/cold startup.
    AND NOT EXISTS (
      SELECT 1
      FROM warm_and_cold wac
      WHERE sl.ts BETWEEN wac.ts AND wac.ts_end
      LIMIT 1
    )
),
cold_warm_hot AS (
  SELECT * FROM warm_and_cold
  UNION ALL
  SELECT * FROM maybe_hot
)
SELECT
  ts,
  ts_end,
  ts_end - ts AS dur,
  package,
  startup_type
FROM cold_warm_hot
ORDER BY ts;
