| /* |
| * Copyright (C) 2019 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.wm; |
| |
| import static android.app.ActivityManager.PROCESS_STATE_NONEXISTENT; |
| |
| import android.util.SparseIntArray; |
| |
| /** |
| * This is a partial mirror of {@link @com.android.server.am.ActiveUids}. It is already thread |
| * safe so the heavy service lock is not needed when updating state from activity manager (oom |
| * adjustment) or getting state from window manager (background start check). |
| */ |
| class MirrorActiveUids { |
| private SparseIntArray mUidStates = new SparseIntArray(); |
| |
| synchronized void onUidActive(int uid, int procState) { |
| mUidStates.put(uid, procState); |
| } |
| |
| synchronized void onUidInactive(int uid) { |
| mUidStates.delete(uid); |
| } |
| |
| synchronized void onActiveUidsCleared() { |
| mUidStates.clear(); |
| } |
| |
| synchronized void onUidProcStateChanged(int uid, int procState) { |
| final int index = mUidStates.indexOfKey(uid); |
| if (index >= 0) { |
| mUidStates.setValueAt(index, procState); |
| } |
| } |
| |
| synchronized int getUidState(int uid) { |
| return mUidStates.get(uid, PROCESS_STATE_NONEXISTENT); |
| } |
| } |