1 /* 2 * Copyright (C) 2010 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 //#define LOG_NDEBUG 0 18 #define LOG_TAG "ALooperRoster" 19 #include <utils/Log.h> 20 21 #include "ALooperRoster.h" 22 23 #include "ADebug.h" 24 #include "AHandler.h" 25 #include "AMessage.h" 26 27 namespace android { 28 29 ALooperRoster::ALooperRoster() 30 : mNextHandlerID(1) { 31 } 32 33 ALooper::handler_id ALooperRoster::registerHandler( 34 const sp<ALooper> looper, const sp<AHandler> &handler) { 35 Mutex::Autolock autoLock(mLock); 36 37 if (handler->id() != 0) { 38 CHECK(!"A handler must only be registered once."); 39 return INVALID_OPERATION; 40 } 41 42 HandlerInfo info; 43 info.mLooper = looper; 44 info.mHandler = handler; 45 ALooper::handler_id handlerID = mNextHandlerID++; 46 mHandlers.add(handlerID, info); 47 48 handler->setID(handlerID); 49 50 return handlerID; 51 } 52 53 void ALooperRoster::unregisterHandler(ALooper::handler_id handlerID) { 54 Mutex::Autolock autoLock(mLock); 55 56 ssize_t index = mHandlers.indexOfKey(handlerID); 57 58 if (index < 0) { 59 return; 60 } 61 62 const HandlerInfo &info = mHandlers.valueAt(index); 63 64 sp<AHandler> handler = info.mHandler.promote(); 65 66 if (handler != NULL) { 67 handler->setID(0); 68 } 69 70 mHandlers.removeItemsAt(index); 71 } 72 73 void ALooperRoster::postMessage( 74 const sp<AMessage> &msg, int64_t delayUs) { 75 Mutex::Autolock autoLock(mLock); 76 77 ssize_t index = mHandlers.indexOfKey(msg->target()); 78 79 if (index < 0) { 80 LOGW("failed to post message. Target handler not registered."); 81 return; 82 } 83 84 const HandlerInfo &info = mHandlers.valueAt(index); 85 86 sp<ALooper> looper = info.mLooper.promote(); 87 88 if (looper == NULL) { 89 LOGW("failed to post message. " 90 "Target handler %d still registered, but object gone.", 91 msg->target()); 92 93 mHandlers.removeItemsAt(index); 94 return; 95 } 96 97 looper->post(msg, delayUs); 98 } 99 100 void ALooperRoster::deliverMessage(const sp<AMessage> &msg) { 101 sp<AHandler> handler; 102 103 { 104 Mutex::Autolock autoLock(mLock); 105 106 ssize_t index = mHandlers.indexOfKey(msg->target()); 107 108 if (index < 0) { 109 LOGW("failed to deliver message. Target handler not registered."); 110 return; 111 } 112 113 const HandlerInfo &info = mHandlers.valueAt(index); 114 handler = info.mHandler.promote(); 115 116 if (handler == NULL) { 117 LOGW("failed to deliver message. " 118 "Target handler %d registered, but object gone.", 119 msg->target()); 120 121 mHandlers.removeItemsAt(index); 122 return; 123 } 124 } 125 126 handler->onMessageReceived(msg); 127 } 128 129 sp<ALooper> ALooperRoster::findLooper(ALooper::handler_id handlerID) { 130 Mutex::Autolock autoLock(mLock); 131 132 ssize_t index = mHandlers.indexOfKey(handlerID); 133 134 if (index < 0) { 135 return NULL; 136 } 137 138 sp<ALooper> looper = mHandlers.valueAt(index).mLooper.promote(); 139 140 if (looper == NULL) { 141 mHandlers.removeItemsAt(index); 142 return NULL; 143 } 144 145 return looper; 146 } 147 148 } // namespace android 149