Andrii Kulian | 446e824 | 2017-10-26 15:17:29 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2017 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Wale Ogunwale | 5950709 | 2018-10-29 09:00:30 -0700 | [diff] [blame] | 17 | package com.android.server.wm; |
Andrii Kulian | 446e824 | 2017-10-26 15:17:29 -0700 | [diff] [blame] | 18 | |
| 19 | import android.annotation.NonNull; |
| 20 | import android.app.IApplicationThread; |
| 21 | import android.app.servertransaction.ClientTransaction; |
| 22 | import android.app.servertransaction.ClientTransactionItem; |
| 23 | import android.app.servertransaction.ActivityLifecycleItem; |
Andrii Kulian | 0447068 | 2018-01-10 15:32:31 -0800 | [diff] [blame] | 24 | import android.os.Binder; |
Andrii Kulian | 446e824 | 2017-10-26 15:17:29 -0700 | [diff] [blame] | 25 | import android.os.IBinder; |
| 26 | import android.os.RemoteException; |
| 27 | |
| 28 | /** |
| 29 | * Class that is able to combine multiple client lifecycle transition requests and/or callbacks, |
| 30 | * and execute them as a single transaction. |
| 31 | * |
| 32 | * @see ClientTransaction |
| 33 | */ |
| 34 | class ClientLifecycleManager { |
| 35 | // TODO(lifecycler): Implement building transactions or global transaction. |
| 36 | // TODO(lifecycler): Use object pools for transactions and transaction items. |
| 37 | |
| 38 | /** |
| 39 | * Schedule a transaction, which may consist of multiple callbacks and a lifecycle request. |
| 40 | * @param transaction A sequence of client transaction items. |
| 41 | * @throws RemoteException |
| 42 | * |
| 43 | * @see ClientTransaction |
| 44 | */ |
| 45 | void scheduleTransaction(ClientTransaction transaction) throws RemoteException { |
Andrii Kulian | 0447068 | 2018-01-10 15:32:31 -0800 | [diff] [blame] | 46 | final IApplicationThread client = transaction.getClient(); |
Andrii Kulian | 446e824 | 2017-10-26 15:17:29 -0700 | [diff] [blame] | 47 | transaction.schedule(); |
Andrii Kulian | 0447068 | 2018-01-10 15:32:31 -0800 | [diff] [blame] | 48 | if (!(client instanceof Binder)) { |
| 49 | // If client is not an instance of Binder - it's a remote call and at this point it is |
| 50 | // safe to recycle the object. All objects used for local calls will be recycled after |
| 51 | // the transaction is executed on client in ActivityThread. |
| 52 | transaction.recycle(); |
| 53 | } |
Andrii Kulian | 446e824 | 2017-10-26 15:17:29 -0700 | [diff] [blame] | 54 | } |
| 55 | |
| 56 | /** |
| 57 | * Schedule a single lifecycle request or callback to client activity. |
| 58 | * @param client Target client. |
| 59 | * @param activityToken Target activity token. |
| 60 | * @param stateRequest A request to move target activity to a desired lifecycle state. |
| 61 | * @throws RemoteException |
| 62 | * |
| 63 | * @see ClientTransactionItem |
| 64 | */ |
| 65 | void scheduleTransaction(@NonNull IApplicationThread client, @NonNull IBinder activityToken, |
| 66 | @NonNull ActivityLifecycleItem stateRequest) throws RemoteException { |
| 67 | final ClientTransaction clientTransaction = transactionWithState(client, activityToken, |
| 68 | stateRequest); |
| 69 | scheduleTransaction(clientTransaction); |
| 70 | } |
| 71 | |
| 72 | /** |
| 73 | * Schedule a single callback delivery to client activity. |
| 74 | * @param client Target client. |
| 75 | * @param activityToken Target activity token. |
| 76 | * @param callback A request to deliver a callback. |
| 77 | * @throws RemoteException |
| 78 | * |
| 79 | * @see ClientTransactionItem |
| 80 | */ |
| 81 | void scheduleTransaction(@NonNull IApplicationThread client, @NonNull IBinder activityToken, |
| 82 | @NonNull ClientTransactionItem callback) throws RemoteException { |
| 83 | final ClientTransaction clientTransaction = transactionWithCallback(client, activityToken, |
| 84 | callback); |
| 85 | scheduleTransaction(clientTransaction); |
| 86 | } |
| 87 | |
| 88 | /** |
| 89 | * Schedule a single callback delivery to client application. |
| 90 | * @param client Target client. |
| 91 | * @param callback A request to deliver a callback. |
| 92 | * @throws RemoteException |
| 93 | * |
| 94 | * @see ClientTransactionItem |
| 95 | */ |
| 96 | void scheduleTransaction(@NonNull IApplicationThread client, |
| 97 | @NonNull ClientTransactionItem callback) throws RemoteException { |
| 98 | final ClientTransaction clientTransaction = transactionWithCallback(client, |
| 99 | null /* activityToken */, callback); |
| 100 | scheduleTransaction(clientTransaction); |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * @return A new instance of {@link ClientTransaction} with a single lifecycle state request. |
| 105 | * |
| 106 | * @see ClientTransaction |
| 107 | * @see ClientTransactionItem |
| 108 | */ |
| 109 | private static ClientTransaction transactionWithState(@NonNull IApplicationThread client, |
| 110 | @NonNull IBinder activityToken, @NonNull ActivityLifecycleItem stateRequest) { |
Andrii Kulian | 9c5ea9c | 2017-12-07 09:31:01 -0800 | [diff] [blame] | 111 | final ClientTransaction clientTransaction = ClientTransaction.obtain(client, activityToken); |
Andrii Kulian | 446e824 | 2017-10-26 15:17:29 -0700 | [diff] [blame] | 112 | clientTransaction.setLifecycleStateRequest(stateRequest); |
| 113 | return clientTransaction; |
| 114 | } |
| 115 | |
| 116 | /** |
| 117 | * @return A new instance of {@link ClientTransaction} with a single callback invocation. |
| 118 | * |
| 119 | * @see ClientTransaction |
| 120 | * @see ClientTransactionItem |
| 121 | */ |
| 122 | private static ClientTransaction transactionWithCallback(@NonNull IApplicationThread client, |
| 123 | IBinder activityToken, @NonNull ClientTransactionItem callback) { |
Andrii Kulian | 9c5ea9c | 2017-12-07 09:31:01 -0800 | [diff] [blame] | 124 | final ClientTransaction clientTransaction = ClientTransaction.obtain(client, activityToken); |
Andrii Kulian | 446e824 | 2017-10-26 15:17:29 -0700 | [diff] [blame] | 125 | clientTransaction.addCallback(callback); |
| 126 | return clientTransaction; |
| 127 | } |
| 128 | } |