| /* |
| * Copyright (C) 2018 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 |
| * |
| * http://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. |
| */ |
| |
| package com.google.android.startop.iorap; |
| |
| import android.os.Parcelable; |
| import android.os.Parcel; |
| |
| import android.annotation.IntDef; |
| |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.util.Objects; |
| |
| /** |
| * Provide a hint to iorapd that an activity has transitioned state.<br /><br /> |
| * |
| * Knowledge of when an activity starts/stops can be used by iorapd to increase system |
| * performance (e.g. by launching perfetto tracing to record an io profile, or by |
| * playing back an ioprofile via readahead) over the long run.<br /><br /> |
| * |
| * /@see com.google.android.startop.iorap.IIorap#onActivityHintEvent<br /><br /> |
| * |
| * Once an activity hint is in {@link #TYPE_STARTED} it must transition to another type. |
| * All other states could be terminal, see below: <br /><br /> |
| * |
| * <pre> |
| * |
| * ┌──────────────────────────────────────┐ |
| * │ ▼ |
| * ┌─────────┐ ╔════════════════╗ ╔═══════════╗ |
| * ──▶ │ STARTED │ ──▶ ║ COMPLETED ║ ──▶ ║ CANCELLED ║ |
| * └─────────┘ ╚════════════════╝ ╚═══════════╝ |
| * │ |
| * │ |
| * ▼ |
| * ╔════════════════╗ |
| * ║ POST_COMPLETED ║ |
| * ╚════════════════╝ |
| * |
| * </pre> <!-- system/iorap/docs/binder/ActivityHint.dot --> |
| * |
| * @hide |
| */ |
| public class ActivityHintEvent implements Parcelable { |
| |
| public static final int TYPE_STARTED = 0; |
| public static final int TYPE_CANCELLED = 1; |
| public static final int TYPE_COMPLETED = 2; |
| public static final int TYPE_POST_COMPLETED = 3; |
| private static final int TYPE_MAX = TYPE_POST_COMPLETED; |
| |
| /** @hide */ |
| @IntDef(flag = true, prefix = { "TYPE_" }, value = { |
| TYPE_STARTED, |
| TYPE_CANCELLED, |
| TYPE_COMPLETED, |
| TYPE_POST_COMPLETED, |
| }) |
| @Retention(RetentionPolicy.SOURCE) |
| public @interface Type {} |
| |
| @Type public final int type; |
| public final ActivityInfo activityInfo; |
| |
| public ActivityHintEvent(@Type int type, ActivityInfo activityInfo) { |
| this.type = type; |
| this.activityInfo = activityInfo; |
| checkConstructorArguments(); |
| } |
| |
| private void checkConstructorArguments() { |
| CheckHelpers.checkTypeInRange(type, TYPE_MAX); |
| Objects.requireNonNull(activityInfo, "activityInfo"); |
| } |
| |
| @Override |
| public String toString() { |
| return String.format("{type: %d, activityInfo: %s}", type, activityInfo); |
| } |
| |
| @Override |
| public boolean equals(Object other) { |
| if (this == other) { |
| return true; |
| } else if (other instanceof ActivityHintEvent) { |
| return equals((ActivityHintEvent) other); |
| } |
| return false; |
| } |
| |
| private boolean equals(ActivityHintEvent other) { |
| return type == other.type && |
| Objects.equals(activityInfo, other.activityInfo); |
| } |
| |
| //<editor-fold desc="Binder boilerplate"> |
| @Override |
| public void writeToParcel(Parcel out, int flags) { |
| out.writeInt(type); |
| activityInfo.writeToParcel(out, flags); |
| } |
| |
| private ActivityHintEvent(Parcel in) { |
| this.type = in.readInt(); |
| this.activityInfo = ActivityInfo.CREATOR.createFromParcel(in); |
| checkConstructorArguments(); |
| } |
| |
| @Override |
| public int describeContents() { |
| return 0; |
| } |
| |
| public static final Parcelable.Creator<ActivityHintEvent> CREATOR |
| = new Parcelable.Creator<ActivityHintEvent>() { |
| public ActivityHintEvent createFromParcel(Parcel in) { |
| return new ActivityHintEvent(in); |
| } |
| |
| public ActivityHintEvent[] newArray(int size) { |
| return new ActivityHintEvent[size]; |
| } |
| }; |
| //</editor-fold> |
| } |