172961230a5890071bcca436eb5630172ce84ec41Andreas Huber/* 272961230a5890071bcca436eb5630172ce84ec41Andreas Huber * Copyright (C) 2010 The Android Open Source Project 372961230a5890071bcca436eb5630172ce84ec41Andreas Huber * 472961230a5890071bcca436eb5630172ce84ec41Andreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 572961230a5890071bcca436eb5630172ce84ec41Andreas Huber * you may not use this file except in compliance with the License. 672961230a5890071bcca436eb5630172ce84ec41Andreas Huber * You may obtain a copy of the License at 772961230a5890071bcca436eb5630172ce84ec41Andreas Huber * 872961230a5890071bcca436eb5630172ce84ec41Andreas Huber * http://www.apache.org/licenses/LICENSE-2.0 972961230a5890071bcca436eb5630172ce84ec41Andreas Huber * 1072961230a5890071bcca436eb5630172ce84ec41Andreas Huber * Unless required by applicable law or agreed to in writing, software 1172961230a5890071bcca436eb5630172ce84ec41Andreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 1272961230a5890071bcca436eb5630172ce84ec41Andreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1372961230a5890071bcca436eb5630172ce84ec41Andreas Huber * See the License for the specific language governing permissions and 1472961230a5890071bcca436eb5630172ce84ec41Andreas Huber * limitations under the License. 1572961230a5890071bcca436eb5630172ce84ec41Andreas Huber */ 1672961230a5890071bcca436eb5630172ce84ec41Andreas Huber 1772961230a5890071bcca436eb5630172ce84ec41Andreas Huber//#define LOG_NDEBUG 0 1872961230a5890071bcca436eb5630172ce84ec41Andreas Huber#define LOG_TAG "ALooperRoster" 1972961230a5890071bcca436eb5630172ce84ec41Andreas Huber#include <utils/Log.h> 2072961230a5890071bcca436eb5630172ce84ec41Andreas Huber 2172961230a5890071bcca436eb5630172ce84ec41Andreas Huber#include "ALooperRoster.h" 2272961230a5890071bcca436eb5630172ce84ec41Andreas Huber 2372961230a5890071bcca436eb5630172ce84ec41Andreas Huber#include "ADebug.h" 2472961230a5890071bcca436eb5630172ce84ec41Andreas Huber#include "AHandler.h" 2572961230a5890071bcca436eb5630172ce84ec41Andreas Huber#include "AMessage.h" 2672961230a5890071bcca436eb5630172ce84ec41Andreas Huber 2772961230a5890071bcca436eb5630172ce84ec41Andreas Hubernamespace android { 2872961230a5890071bcca436eb5630172ce84ec41Andreas Huber 2972961230a5890071bcca436eb5630172ce84ec41Andreas HuberALooperRoster::ALooperRoster() 305df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber : mNextHandlerID(1), 315df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber mNextReplyID(1) { 3272961230a5890071bcca436eb5630172ce84ec41Andreas Huber} 3372961230a5890071bcca436eb5630172ce84ec41Andreas Huber 3472961230a5890071bcca436eb5630172ce84ec41Andreas HuberALooper::handler_id ALooperRoster::registerHandler( 3572961230a5890071bcca436eb5630172ce84ec41Andreas Huber const sp<ALooper> looper, const sp<AHandler> &handler) { 3672961230a5890071bcca436eb5630172ce84ec41Andreas Huber Mutex::Autolock autoLock(mLock); 3772961230a5890071bcca436eb5630172ce84ec41Andreas Huber 3872961230a5890071bcca436eb5630172ce84ec41Andreas Huber if (handler->id() != 0) { 3972961230a5890071bcca436eb5630172ce84ec41Andreas Huber CHECK(!"A handler must only be registered once."); 4072961230a5890071bcca436eb5630172ce84ec41Andreas Huber return INVALID_OPERATION; 4172961230a5890071bcca436eb5630172ce84ec41Andreas Huber } 4272961230a5890071bcca436eb5630172ce84ec41Andreas Huber 4372961230a5890071bcca436eb5630172ce84ec41Andreas Huber HandlerInfo info; 4472961230a5890071bcca436eb5630172ce84ec41Andreas Huber info.mLooper = looper; 4572961230a5890071bcca436eb5630172ce84ec41Andreas Huber info.mHandler = handler; 4672961230a5890071bcca436eb5630172ce84ec41Andreas Huber ALooper::handler_id handlerID = mNextHandlerID++; 4772961230a5890071bcca436eb5630172ce84ec41Andreas Huber mHandlers.add(handlerID, info); 4872961230a5890071bcca436eb5630172ce84ec41Andreas Huber 4972961230a5890071bcca436eb5630172ce84ec41Andreas Huber handler->setID(handlerID); 5072961230a5890071bcca436eb5630172ce84ec41Andreas Huber 5172961230a5890071bcca436eb5630172ce84ec41Andreas Huber return handlerID; 5272961230a5890071bcca436eb5630172ce84ec41Andreas Huber} 5372961230a5890071bcca436eb5630172ce84ec41Andreas Huber 5472961230a5890071bcca436eb5630172ce84ec41Andreas Hubervoid ALooperRoster::unregisterHandler(ALooper::handler_id handlerID) { 5572961230a5890071bcca436eb5630172ce84ec41Andreas Huber Mutex::Autolock autoLock(mLock); 5672961230a5890071bcca436eb5630172ce84ec41Andreas Huber 5772961230a5890071bcca436eb5630172ce84ec41Andreas Huber ssize_t index = mHandlers.indexOfKey(handlerID); 58f200777290d2e3e8b580c512cc0808eae9790705Andreas Huber 59f200777290d2e3e8b580c512cc0808eae9790705Andreas Huber if (index < 0) { 60f200777290d2e3e8b580c512cc0808eae9790705Andreas Huber return; 61f200777290d2e3e8b580c512cc0808eae9790705Andreas Huber } 6272961230a5890071bcca436eb5630172ce84ec41Andreas Huber 6372961230a5890071bcca436eb5630172ce84ec41Andreas Huber const HandlerInfo &info = mHandlers.valueAt(index); 6411cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber 6511cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber sp<AHandler> handler = info.mHandler.promote(); 6611cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber 6711cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber if (handler != NULL) { 6811cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber handler->setID(0); 6911cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber } 7072961230a5890071bcca436eb5630172ce84ec41Andreas Huber 7172961230a5890071bcca436eb5630172ce84ec41Andreas Huber mHandlers.removeItemsAt(index); 7272961230a5890071bcca436eb5630172ce84ec41Andreas Huber} 7372961230a5890071bcca436eb5630172ce84ec41Andreas Huber 745df775d2f509c76e76a46615fca83dba95299f6eAndreas Huberstatus_t ALooperRoster::postMessage( 7572961230a5890071bcca436eb5630172ce84ec41Andreas Huber const sp<AMessage> &msg, int64_t delayUs) { 7672961230a5890071bcca436eb5630172ce84ec41Andreas Huber Mutex::Autolock autoLock(mLock); 775df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber return postMessage_l(msg, delayUs); 785df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber} 7972961230a5890071bcca436eb5630172ce84ec41Andreas Huber 805df775d2f509c76e76a46615fca83dba95299f6eAndreas Huberstatus_t ALooperRoster::postMessage_l( 815df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber const sp<AMessage> &msg, int64_t delayUs) { 8272961230a5890071bcca436eb5630172ce84ec41Andreas Huber ssize_t index = mHandlers.indexOfKey(msg->target()); 8372961230a5890071bcca436eb5630172ce84ec41Andreas Huber 8472961230a5890071bcca436eb5630172ce84ec41Andreas Huber if (index < 0) { 855ff1dd576bb93c45b44088a51544a18fc43ebf58Steve Block ALOGW("failed to post message. Target handler not registered."); 865df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber return -ENOENT; 8772961230a5890071bcca436eb5630172ce84ec41Andreas Huber } 8872961230a5890071bcca436eb5630172ce84ec41Andreas Huber 8972961230a5890071bcca436eb5630172ce84ec41Andreas Huber const HandlerInfo &info = mHandlers.valueAt(index); 9011cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber 9111cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber sp<ALooper> looper = info.mLooper.promote(); 9211cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber 9311cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber if (looper == NULL) { 945ff1dd576bb93c45b44088a51544a18fc43ebf58Steve Block ALOGW("failed to post message. " 95f200777290d2e3e8b580c512cc0808eae9790705Andreas Huber "Target handler %d still registered, but object gone.", 96f200777290d2e3e8b580c512cc0808eae9790705Andreas Huber msg->target()); 9711cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber 9811cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber mHandlers.removeItemsAt(index); 995df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber return -ENOENT; 10011cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber } 10111cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber 10211cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber looper->post(msg, delayUs); 1035df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber 1045df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber return OK; 10572961230a5890071bcca436eb5630172ce84ec41Andreas Huber} 10672961230a5890071bcca436eb5630172ce84ec41Andreas Huber 10772961230a5890071bcca436eb5630172ce84ec41Andreas Hubervoid ALooperRoster::deliverMessage(const sp<AMessage> &msg) { 10872961230a5890071bcca436eb5630172ce84ec41Andreas Huber sp<AHandler> handler; 10972961230a5890071bcca436eb5630172ce84ec41Andreas Huber 11072961230a5890071bcca436eb5630172ce84ec41Andreas Huber { 11172961230a5890071bcca436eb5630172ce84ec41Andreas Huber Mutex::Autolock autoLock(mLock); 11272961230a5890071bcca436eb5630172ce84ec41Andreas Huber 11372961230a5890071bcca436eb5630172ce84ec41Andreas Huber ssize_t index = mHandlers.indexOfKey(msg->target()); 11472961230a5890071bcca436eb5630172ce84ec41Andreas Huber 11572961230a5890071bcca436eb5630172ce84ec41Andreas Huber if (index < 0) { 1165ff1dd576bb93c45b44088a51544a18fc43ebf58Steve Block ALOGW("failed to deliver message. Target handler not registered."); 11772961230a5890071bcca436eb5630172ce84ec41Andreas Huber return; 11872961230a5890071bcca436eb5630172ce84ec41Andreas Huber } 11972961230a5890071bcca436eb5630172ce84ec41Andreas Huber 12072961230a5890071bcca436eb5630172ce84ec41Andreas Huber const HandlerInfo &info = mHandlers.valueAt(index); 12111cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber handler = info.mHandler.promote(); 12211cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber 12311cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber if (handler == NULL) { 1245ff1dd576bb93c45b44088a51544a18fc43ebf58Steve Block ALOGW("failed to deliver message. " 125f200777290d2e3e8b580c512cc0808eae9790705Andreas Huber "Target handler %d registered, but object gone.", 126f200777290d2e3e8b580c512cc0808eae9790705Andreas Huber msg->target()); 12711cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber 12811cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber mHandlers.removeItemsAt(index); 12911cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber return; 13011cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber } 13172961230a5890071bcca436eb5630172ce84ec41Andreas Huber } 13272961230a5890071bcca436eb5630172ce84ec41Andreas Huber 13372961230a5890071bcca436eb5630172ce84ec41Andreas Huber handler->onMessageReceived(msg); 13472961230a5890071bcca436eb5630172ce84ec41Andreas Huber} 13572961230a5890071bcca436eb5630172ce84ec41Andreas Huber 136e2b20987c2652a984d10520ef3542d50d91119c5Andreas Hubersp<ALooper> ALooperRoster::findLooper(ALooper::handler_id handlerID) { 137e2b20987c2652a984d10520ef3542d50d91119c5Andreas Huber Mutex::Autolock autoLock(mLock); 138e2b20987c2652a984d10520ef3542d50d91119c5Andreas Huber 139e2b20987c2652a984d10520ef3542d50d91119c5Andreas Huber ssize_t index = mHandlers.indexOfKey(handlerID); 140e2b20987c2652a984d10520ef3542d50d91119c5Andreas Huber 141e2b20987c2652a984d10520ef3542d50d91119c5Andreas Huber if (index < 0) { 142e2b20987c2652a984d10520ef3542d50d91119c5Andreas Huber return NULL; 143e2b20987c2652a984d10520ef3542d50d91119c5Andreas Huber } 144e2b20987c2652a984d10520ef3542d50d91119c5Andreas Huber 14511cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber sp<ALooper> looper = mHandlers.valueAt(index).mLooper.promote(); 14611cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber 14711cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber if (looper == NULL) { 14811cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber mHandlers.removeItemsAt(index); 14911cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber return NULL; 15011cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber } 15111cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber 15211cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber return looper; 153e2b20987c2652a984d10520ef3542d50d91119c5Andreas Huber} 154e2b20987c2652a984d10520ef3542d50d91119c5Andreas Huber 1555df775d2f509c76e76a46615fca83dba95299f6eAndreas Huberstatus_t ALooperRoster::postAndAwaitResponse( 1565df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber const sp<AMessage> &msg, sp<AMessage> *response) { 1575df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber Mutex::Autolock autoLock(mLock); 1585df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber 1595df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber uint32_t replyID = mNextReplyID++; 1605df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber 1615df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber msg->setInt32("replyID", replyID); 1625df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber 1635df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber status_t err = postMessage_l(msg, 0 /* delayUs */); 1645df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber 1655df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber if (err != OK) { 1665df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber response->clear(); 1675df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber return err; 1685df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber } 1695df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber 1705df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber ssize_t index; 1715df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber while ((index = mReplies.indexOfKey(replyID)) < 0) { 1725df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber mRepliesCondition.wait(mLock); 1735df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber } 1745df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber 1755df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber *response = mReplies.valueAt(index); 1765df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber mReplies.removeItemsAt(index); 1775df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber 1785df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber return OK; 1795df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber} 1805df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber 1815df775d2f509c76e76a46615fca83dba95299f6eAndreas Hubervoid ALooperRoster::postReply(uint32_t replyID, const sp<AMessage> &reply) { 1825df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber Mutex::Autolock autoLock(mLock); 1835df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber 1845df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber CHECK(mReplies.indexOfKey(replyID) < 0); 1855df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber mReplies.add(replyID, reply); 1865df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber mRepliesCondition.broadcast(); 1875df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber} 1885df775d2f509c76e76a46615fca83dba95299f6eAndreas Huber 18972961230a5890071bcca436eb5630172ce84ec41Andreas Huber} // namespace android 190