1// Copyright (C) 2024 The Android Open Source Project 2// 3// Licensed under the Apache License, Version 2.0 (the "License"); 4// you may not use this file except in compliance with the License. 5// You may obtain a copy of the License at 6// 7// http://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS, 11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12// See the License for the specific language governing permissions and 13// limitations under the License. 14 15import {NUM, STR_NULL} from '../../trace_processor/query_result'; 16import {createTraceProcessorSliceTrack} from '../dev.perfetto.TraceProcessorTrack/trace_processor_slice_track'; 17import {PerfettoPlugin} from '../../public/plugin'; 18import {Trace} from '../../public/trace'; 19import {TrackNode} from '../../public/workspace'; 20import {SLICE_TRACK_KIND} from '../../public/track_kinds'; 21import {SuspendResumeDetailsPanel} from './suspend_resume_details'; 22import ThreadPlugin from '../dev.perfetto.Thread'; 23import TraceProcessorTrackPlugin from '../dev.perfetto.TraceProcessorTrack'; 24 25export default class implements PerfettoPlugin { 26 static readonly id = 'org.kernel.SuspendResumeLatency'; 27 static readonly dependencies = [ThreadPlugin, TraceProcessorTrackPlugin]; 28 29 async onTraceLoad(ctx: Trace): Promise<void> { 30 const threads = ctx.plugins.getPlugin(ThreadPlugin).getThreadMap(); 31 const {engine} = ctx; 32 const rawGlobalAsyncTracks = await engine.query(` 33 with global_tracks_grouped as ( 34 select 35 name, 36 group_concat(distinct t.id) as trackIds, 37 count() as trackCount 38 from track t 39 where t.name = "Suspend/Resume Latency" 40 ) 41 select 42 t.trackIds as trackIds, 43 case 44 when 45 t.trackCount > 0 46 then 47 __max_layout_depth(t.trackCount, t.trackIds) 48 else 0 49 end as maxDepth 50 from global_tracks_grouped t 51 `); 52 const it = rawGlobalAsyncTracks.iter({ 53 trackIds: STR_NULL, 54 maxDepth: NUM, 55 }); 56 // If no Suspend/Resume tracks exist, then nothing to do. 57 if (it.trackIds == null) { 58 return; 59 } 60 const rawTrackIds = it.trackIds; 61 const trackIds = rawTrackIds.split(',').map((v) => Number(v)); 62 const maxDepth = it.maxDepth; 63 64 const uri = `/suspend_resume_latency`; 65 const displayName = `Suspend/Resume Latency`; 66 ctx.tracks.registerTrack({ 67 uri, 68 title: displayName, 69 tags: { 70 trackIds, 71 kind: SLICE_TRACK_KIND, 72 }, 73 track: createTraceProcessorSliceTrack({ 74 trace: ctx, 75 uri, 76 maxDepth, 77 trackIds, 78 detailsPanel: () => new SuspendResumeDetailsPanel(ctx, threads), 79 }), 80 }); 81 82 // Display the track in the UI. 83 const track = new TrackNode({uri, title: displayName}); 84 ctx.workspace.addChildInOrder(track); 85 } 86} 87