| /* |
| * Copyright (C) 2020 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.wm.shell.apppairs; |
| |
| import static android.app.WindowConfiguration.WINDOWING_MODE_FULLSCREEN; |
| import static android.view.Display.DEFAULT_DISPLAY; |
| |
| import static com.android.wm.shell.protolog.ShellProtoLogGroup.WM_SHELL_TASK_ORG; |
| |
| import androidx.annotation.NonNull; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.internal.protolog.common.ProtoLog; |
| |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| |
| /** |
| * Class that manager pool of {@link AppPair} objects. Helps reduce the need to call system_server |
| * to create a root task for the app-pair when needed since we always have one ready to go. |
| */ |
| class AppPairsPool { |
| private static final String TAG = AppPairsPool.class.getSimpleName(); |
| |
| @VisibleForTesting |
| final AppPairsController mController; |
| // The pool |
| private final ArrayList<AppPair> mPool = new ArrayList(); |
| |
| AppPairsPool(AppPairsController controller) { |
| mController = controller; |
| incrementPool(); |
| } |
| |
| AppPair acquire() { |
| final AppPair entry = mPool.remove(mPool.size() - 1); |
| ProtoLog.v(WM_SHELL_TASK_ORG, "acquire entry.taskId=%s listener=%s size=%d", |
| entry.getRootTaskId(), entry, mPool.size()); |
| if (mPool.size() == 0) { |
| incrementPool(); |
| } |
| return entry; |
| } |
| |
| void release(AppPair entry) { |
| mPool.add(entry); |
| ProtoLog.v(WM_SHELL_TASK_ORG, "release entry.taskId=%s listener=%s size=%d", |
| entry.getRootTaskId(), entry, mPool.size()); |
| } |
| |
| @VisibleForTesting |
| void incrementPool() { |
| ProtoLog.v(WM_SHELL_TASK_ORG, "incrementPool size=%d", mPool.size()); |
| final AppPair entry = new AppPair(mController); |
| // TODO: multi-display... |
| mController.getTaskOrganizer().createRootTask( |
| DEFAULT_DISPLAY, WINDOWING_MODE_FULLSCREEN, entry); |
| mPool.add(entry); |
| } |
| |
| @VisibleForTesting |
| int poolSize() { |
| return mPool.size(); |
| } |
| |
| public void dump(@NonNull PrintWriter pw, String prefix) { |
| final String innerPrefix = prefix + " "; |
| final String childPrefix = innerPrefix + " "; |
| pw.println(prefix + this); |
| for (int i = mPool.size() - 1; i >= 0; --i) { |
| mPool.get(i).dump(pw, childPrefix); |
| } |
| } |
| |
| @Override |
| public String toString() { |
| return TAG + "#" + mPool.size(); |
| } |
| } |