| /* |
| * 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 android.util.ArraySet; |
| import android.util.SparseArray; |
| |
| import java.util.Map; |
| import java.util.HashMap; |
| |
| final class WindowProcessControllerMap { |
| |
| /** All processes we currently have running mapped by pid */ |
| private final SparseArray<WindowProcessController> mPidMap = new SparseArray<>(); |
| /** All processes we currently have running mapped by uid */ |
| private final Map<Integer, ArraySet<WindowProcessController>> mUidMap = new HashMap<>(); |
| |
| /** Retrieves a currently running process for pid. */ |
| WindowProcessController getProcess(int pid) { |
| return mPidMap.get(pid); |
| } |
| |
| /** Retrieves all currently running processes for uid. */ |
| ArraySet<WindowProcessController> getProcesses(int uid) { |
| return mUidMap.get(uid); |
| } |
| |
| SparseArray<WindowProcessController> getPidMap() { |
| return mPidMap; |
| } |
| |
| void put(int pid, WindowProcessController proc) { |
| // if there is a process for this pid already in mPidMap it'll get replaced automagically, |
| // but we actually need to remove it from mUidMap too before adding the new one |
| final WindowProcessController prevProc = mPidMap.get(pid); |
| if (prevProc != null) { |
| removeProcessFromUidMap(prevProc); |
| } |
| // put process into mPidMap |
| mPidMap.put(pid, proc); |
| // put process into mUidMap |
| final int uid = proc.mUid; |
| ArraySet<WindowProcessController> procSet = mUidMap.getOrDefault(uid, |
| new ArraySet<WindowProcessController>()); |
| procSet.add(proc); |
| mUidMap.put(uid, procSet); |
| } |
| |
| void remove(int pid) { |
| final WindowProcessController proc = mPidMap.get(pid); |
| if (proc != null) { |
| // remove process from mPidMap |
| mPidMap.remove(pid); |
| // remove process from mUidMap |
| removeProcessFromUidMap(proc); |
| } |
| } |
| |
| private void removeProcessFromUidMap(WindowProcessController proc) { |
| if (proc == null) { |
| return; |
| } |
| final int uid = proc.mUid; |
| ArraySet<WindowProcessController> procSet = mUidMap.get(uid); |
| if (procSet != null) { |
| procSet.remove(proc); |
| if (procSet.isEmpty()) { |
| mUidMap.remove(uid); |
| } |
| } |
| } |
| } |