1/*
2 * Copyright (C) 2018 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 *      http://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
17package com.android.server.am;
18
19import android.app.WaitResult;
20import android.os.SystemClock;
21import android.os.Trace;
22import android.util.SparseArray;
23
24/**
25 * Tracks launch time of apps to be reported by {@link WaitResult}. Note that this is slightly
26 * different from {@link ActivityMetricsLogger}, but should eventually merged with it.
27 */
28class LaunchTimeTracker {
29
30    private final SparseArray<Entry> mWindowingModeLaunchTime = new SparseArray<>();
31
32    void setLaunchTime(ActivityRecord r) {
33        Entry entry = mWindowingModeLaunchTime.get(r.getWindowingMode());
34        if (entry == null){
35            entry = new Entry();
36            mWindowingModeLaunchTime.append(r.getWindowingMode(), entry);
37        }
38        entry.setLaunchTime(r);
39    }
40
41    void stopFullyDrawnTraceIfNeeded(int windowingMode) {
42        final Entry entry = mWindowingModeLaunchTime.get(windowingMode);
43        if (entry == null) {
44            return;
45        }
46        entry.stopFullyDrawnTraceIfNeeded();
47    }
48
49    Entry getEntry(int windowingMode) {
50        return mWindowingModeLaunchTime.get(windowingMode);
51    }
52
53    static class Entry {
54
55        long mLaunchStartTime;
56        long mFullyDrawnStartTime;
57
58        void setLaunchTime(ActivityRecord r) {
59            if (r.displayStartTime == 0) {
60                r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis();
61                if (mLaunchStartTime == 0) {
62                    startLaunchTraces(r.packageName);
63                    mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime;
64                }
65            } else if (mLaunchStartTime == 0) {
66                startLaunchTraces(r.packageName);
67                mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis();
68            }
69        }
70
71        private void startLaunchTraces(String packageName) {
72            if (mFullyDrawnStartTime != 0)  {
73                Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0);
74            }
75            Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching: " + packageName, 0);
76            Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0);
77        }
78
79        private void stopFullyDrawnTraceIfNeeded() {
80            if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) {
81                Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0);
82                mFullyDrawnStartTime = 0;
83            }
84        }
85    }
86}
87