| /* |
| * Copyright (C) 2022 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.android.server.cpu; |
| |
| import android.annotation.IntDef; |
| import android.util.IntArray; |
| |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| |
| /** CPU availability monitoring config. */ |
| public final class CpuAvailabilityMonitoringConfig { |
| /** Constant to monitor all cpusets. */ |
| public static final int CPUSET_ALL = 1; |
| |
| /** Constant to monitor background cpusets. */ |
| public static final int CPUSET_BACKGROUND = 2; |
| |
| @Retention(RetentionPolicy.SOURCE) |
| @IntDef(prefix = {"CPUSET_"}, value = { |
| CPUSET_ALL, |
| CPUSET_BACKGROUND |
| }) |
| public @interface Cpuset { |
| } |
| |
| /** |
| * The CPUSET to monitor. |
| * |
| * <p>The value must be one of the {@code CPUSET_*} constants. |
| */ |
| @Cpuset |
| public final int cpuset; |
| |
| /** |
| * CPU availability percent thresholds. |
| * |
| * <p>CPU availability change notifications are sent when the latest or last N seconds average |
| * CPU availability percent crosses any of these thresholds since the last notification. |
| */ |
| private final IntArray mThresholds; |
| |
| public IntArray getThresholds() { |
| return mThresholds; |
| } |
| |
| /** |
| * Builder for the construction of {@link CpuAvailabilityMonitoringConfig} objects. |
| * |
| * <p>The builder must contain at least one threshold before calling {@link build}. |
| */ |
| public static final class Builder { |
| private final int mCpuset; |
| private final IntArray mThresholds = new IntArray(); |
| |
| public Builder(int cpuset, int... thresholds) { |
| mCpuset = cpuset; |
| for (int threshold : thresholds) { |
| addThreshold(threshold); |
| } |
| } |
| |
| /** Adds the given threshold to the builder object. */ |
| public Builder addThreshold(int threshold) { |
| if (mThresholds.indexOf(threshold) == -1) { |
| mThresholds.add(threshold); |
| } |
| return this; |
| } |
| |
| /** Returns the {@link CpuAvailabilityMonitoringConfig} object. */ |
| public CpuAvailabilityMonitoringConfig build() { |
| return new CpuAvailabilityMonitoringConfig(this); |
| } |
| } |
| |
| @Override |
| public String toString() { |
| return "CpuAvailabilityMonitoringConfig{cpuset=" + toCpusetString(cpuset) + ", mThresholds=" |
| + mThresholds + ')'; |
| } |
| |
| /** Returns the string equivalent of the provided cpuset. */ |
| public static String toCpusetString(int cpuset) { |
| switch (cpuset) { |
| case CPUSET_ALL: |
| return "CPUSET_ALL"; |
| case CPUSET_BACKGROUND: |
| return "CPUSET_BACKGROUND"; |
| } |
| return "Invalid cpuset: " + cpuset; |
| } |
| |
| private CpuAvailabilityMonitoringConfig(Builder builder) { |
| if (builder.mCpuset != CPUSET_ALL && builder.mCpuset != CPUSET_BACKGROUND) { |
| throw new IllegalStateException("Cpuset must be either CPUSET_ALL (" + CPUSET_ALL |
| + ") or CPUSET_BACKGROUND (" + CPUSET_BACKGROUND + "). Builder contains " |
| + builder.mCpuset); |
| } |
| if (builder.mThresholds.size() == 0) { |
| throw new IllegalStateException("Must provide at least one threshold"); |
| } |
| this.cpuset = builder.mCpuset; |
| this.mThresholds = builder.mThresholds.clone(); |
| } |
| } |