Torne (Richard Coles) | 08cfaf6 | 2014-05-08 16:07:05 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2012 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 | |
| 17 | package com.android.server.webkit; |
| 18 | |
| 19 | import android.os.Binder; |
| 20 | import android.os.Process; |
| 21 | import android.util.Log; |
| 22 | import android.webkit.IWebViewUpdateService; |
| 23 | |
| 24 | /** |
| 25 | * Private service to wait for the updatable WebView to be ready for use. |
| 26 | * @hide |
| 27 | */ |
| 28 | public class WebViewUpdateService extends IWebViewUpdateService.Stub { |
| 29 | |
| 30 | private static final String TAG = "WebViewUpdateService"; |
| 31 | |
| 32 | private boolean mRelroReady32Bit = false; |
| 33 | private boolean mRelroReady64Bit = false; |
| 34 | |
| 35 | public WebViewUpdateService() { |
| 36 | } |
| 37 | |
| 38 | /** |
| 39 | * The shared relro process calls this to notify us that it's done trying to create a relro |
| 40 | * file. |
| 41 | */ |
| 42 | public void notifyRelroCreationCompleted(boolean is64Bit, boolean success) { |
| 43 | // Verify that the caller is the shared relro process. |
| 44 | if (Binder.getCallingUid() != Process.SHARED_RELRO_UID) { |
| 45 | return; |
| 46 | } |
| 47 | |
| 48 | synchronized (this) { |
| 49 | if (is64Bit) { |
| 50 | mRelroReady64Bit = true; |
| 51 | } else { |
| 52 | mRelroReady32Bit = true; |
| 53 | } |
| 54 | this.notifyAll(); |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * WebViewFactory calls this to block WebView loading until the relro file is created. |
| 60 | */ |
| 61 | public void waitForRelroCreationCompleted(boolean is64Bit) { |
| 62 | synchronized (this) { |
| 63 | if (is64Bit) { |
| 64 | while (!mRelroReady64Bit) { |
| 65 | try { |
| 66 | this.wait(); |
| 67 | } catch (InterruptedException e) {} |
| 68 | } |
| 69 | } else { |
| 70 | while (!mRelroReady32Bit) { |
| 71 | try { |
| 72 | this.wait(); |
| 73 | } catch (InterruptedException e) {} |
| 74 | } |
| 75 | } |
| 76 | } |
| 77 | } |
| 78 | } |