1 /* 2 * Copyright (C) 2016 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 17 package android.app; 18 19 import android.annotation.IntDef; 20 import android.content.ComponentName; 21 import android.os.Parcel; 22 import android.os.Parcelable; 23 24 import java.io.PrintWriter; 25 import java.lang.annotation.Retention; 26 import java.lang.annotation.RetentionPolicy; 27 28 /** 29 * Information returned after waiting for an activity start. 30 * 31 * @hide 32 */ 33 public class WaitResult implements Parcelable { 34 35 /** 36 * The state at which a launch sequence had started. 37 * 38 * @see <a href="https://developer.android.com/topic/performance/vitals/launch-time"App startup 39 * time</a> 40 */ 41 @Retention(RetentionPolicy.SOURCE) 42 @IntDef(prefix = {"LAUNCH_STATE_"}, value = { 43 LAUNCH_STATE_COLD, 44 LAUNCH_STATE_WARM, 45 LAUNCH_STATE_HOT 46 }) 47 public @interface LaunchState { 48 } 49 50 /** 51 * Cold launch sequence: a new process has started. 52 */ 53 public static final int LAUNCH_STATE_COLD = 1; 54 55 /** 56 * Warm launch sequence: process reused, but activity has to be created. 57 */ 58 public static final int LAUNCH_STATE_WARM = 2; 59 60 /** 61 * Hot launch sequence: process reused, activity brought-to-top. 62 */ 63 public static final int LAUNCH_STATE_HOT = 3; 64 65 public static final int INVALID_DELAY = -1; 66 public int result; 67 public boolean timeout; 68 public ComponentName who; 69 public long totalTime; 70 public @LaunchState int launchState; 71 WaitResult()72 public WaitResult() { 73 } 74 75 @Override describeContents()76 public int describeContents() { 77 return 0; 78 } 79 80 @Override writeToParcel(Parcel dest, int flags)81 public void writeToParcel(Parcel dest, int flags) { 82 dest.writeInt(result); 83 dest.writeInt(timeout ? 1 : 0); 84 ComponentName.writeToParcel(who, dest); 85 dest.writeLong(totalTime); 86 dest.writeInt(launchState); 87 } 88 89 public static final @android.annotation.NonNull Parcelable.Creator<WaitResult> CREATOR 90 = new Parcelable.Creator<WaitResult>() { 91 @Override 92 public WaitResult createFromParcel(Parcel source) { 93 return new WaitResult(source); 94 } 95 96 @Override 97 public WaitResult[] newArray(int size) { 98 return new WaitResult[size]; 99 } 100 }; 101 WaitResult(Parcel source)102 private WaitResult(Parcel source) { 103 result = source.readInt(); 104 timeout = source.readInt() != 0; 105 who = ComponentName.readFromParcel(source); 106 totalTime = source.readLong(); 107 launchState = source.readInt(); 108 } 109 dump(PrintWriter pw, String prefix)110 public void dump(PrintWriter pw, String prefix) { 111 pw.println(prefix + "WaitResult:"); 112 pw.println(prefix + " result=" + result); 113 pw.println(prefix + " timeout=" + timeout); 114 pw.println(prefix + " who=" + who); 115 pw.println(prefix + " totalTime=" + totalTime); 116 pw.println(prefix + " launchState=" + launchState); 117 } 118 launchStateToString(@aunchState int type)119 public static String launchStateToString(@LaunchState int type) { 120 switch (type) { 121 case LAUNCH_STATE_COLD: 122 return "COLD"; 123 case LAUNCH_STATE_WARM: 124 return "WARM"; 125 case LAUNCH_STATE_HOT: 126 return "HOT"; 127 default: 128 return "UNKNOWN (" + type + ")"; 129 } 130 } 131 }