ALooperRoster.cpp revision 938e2b34b16c3c1fd29c753eeb53ee95a2b2e2b3
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> 20f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen#include <utils/String8.h> 2172961230a5890071bcca436eb5630172ce84ec41Andreas Huber 2272961230a5890071bcca436eb5630172ce84ec41Andreas Huber#include "ALooperRoster.h" 2372961230a5890071bcca436eb5630172ce84ec41Andreas Huber 2472961230a5890071bcca436eb5630172ce84ec41Andreas Huber#include "ADebug.h" 2572961230a5890071bcca436eb5630172ce84ec41Andreas Huber#include "AHandler.h" 2672961230a5890071bcca436eb5630172ce84ec41Andreas Huber#include "AMessage.h" 2772961230a5890071bcca436eb5630172ce84ec41Andreas Huber 2872961230a5890071bcca436eb5630172ce84ec41Andreas Hubernamespace android { 2972961230a5890071bcca436eb5630172ce84ec41Andreas Huber 30f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissenstatic bool verboseStats = false; 31f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen 3272961230a5890071bcca436eb5630172ce84ec41Andreas HuberALooperRoster::ALooperRoster() 333f27436a9346f043f52265da1e6a74cde2bffd4dLajos Molnar : mNextHandlerID(1) { 3472961230a5890071bcca436eb5630172ce84ec41Andreas Huber} 3572961230a5890071bcca436eb5630172ce84ec41Andreas Huber 3672961230a5890071bcca436eb5630172ce84ec41Andreas HuberALooper::handler_id ALooperRoster::registerHandler( 3772961230a5890071bcca436eb5630172ce84ec41Andreas Huber const sp<ALooper> looper, const sp<AHandler> &handler) { 3872961230a5890071bcca436eb5630172ce84ec41Andreas Huber Mutex::Autolock autoLock(mLock); 3972961230a5890071bcca436eb5630172ce84ec41Andreas Huber 4072961230a5890071bcca436eb5630172ce84ec41Andreas Huber if (handler->id() != 0) { 4172961230a5890071bcca436eb5630172ce84ec41Andreas Huber CHECK(!"A handler must only be registered once."); 4272961230a5890071bcca436eb5630172ce84ec41Andreas Huber return INVALID_OPERATION; 4372961230a5890071bcca436eb5630172ce84ec41Andreas Huber } 4472961230a5890071bcca436eb5630172ce84ec41Andreas Huber 4572961230a5890071bcca436eb5630172ce84ec41Andreas Huber HandlerInfo info; 4672961230a5890071bcca436eb5630172ce84ec41Andreas Huber info.mLooper = looper; 4772961230a5890071bcca436eb5630172ce84ec41Andreas Huber info.mHandler = handler; 4872961230a5890071bcca436eb5630172ce84ec41Andreas Huber ALooper::handler_id handlerID = mNextHandlerID++; 4972961230a5890071bcca436eb5630172ce84ec41Andreas Huber mHandlers.add(handlerID, info); 5072961230a5890071bcca436eb5630172ce84ec41Andreas Huber 515804a76ac5f9f3c311f1bbbcc5ebdc8f8568ae14Lajos Molnar handler->setID(handlerID, looper); 5272961230a5890071bcca436eb5630172ce84ec41Andreas Huber 5372961230a5890071bcca436eb5630172ce84ec41Andreas Huber return handlerID; 5472961230a5890071bcca436eb5630172ce84ec41Andreas Huber} 5572961230a5890071bcca436eb5630172ce84ec41Andreas Huber 5672961230a5890071bcca436eb5630172ce84ec41Andreas Hubervoid ALooperRoster::unregisterHandler(ALooper::handler_id handlerID) { 5772961230a5890071bcca436eb5630172ce84ec41Andreas Huber Mutex::Autolock autoLock(mLock); 5872961230a5890071bcca436eb5630172ce84ec41Andreas Huber 5972961230a5890071bcca436eb5630172ce84ec41Andreas Huber ssize_t index = mHandlers.indexOfKey(handlerID); 60f200777290d2e3e8b580c512cc0808eae9790705Andreas Huber 61f200777290d2e3e8b580c512cc0808eae9790705Andreas Huber if (index < 0) { 62f200777290d2e3e8b580c512cc0808eae9790705Andreas Huber return; 63f200777290d2e3e8b580c512cc0808eae9790705Andreas Huber } 6472961230a5890071bcca436eb5630172ce84ec41Andreas Huber 6572961230a5890071bcca436eb5630172ce84ec41Andreas Huber const HandlerInfo &info = mHandlers.valueAt(index); 6611cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber 6711cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber sp<AHandler> handler = info.mHandler.promote(); 6811cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber 6911cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber if (handler != NULL) { 705804a76ac5f9f3c311f1bbbcc5ebdc8f8568ae14Lajos Molnar handler->setID(0, NULL); 7111cc270ac5fd522c9e6491a7933516a96da4f62eAndreas Huber } 7272961230a5890071bcca436eb5630172ce84ec41Andreas Huber 7372961230a5890071bcca436eb5630172ce84ec41Andreas Huber mHandlers.removeItemsAt(index); 7472961230a5890071bcca436eb5630172ce84ec41Andreas Huber} 7572961230a5890071bcca436eb5630172ce84ec41Andreas Huber 7630873bfd08255e2c4e98ff5732ffff2838772617Andreas Hubervoid ALooperRoster::unregisterStaleHandlers() { 7730873bfd08255e2c4e98ff5732ffff2838772617Andreas Huber 7875c672fc376ef9b3ceff61a96513242b0e5ebd60Marco Nelissen Vector<sp<ALooper> > activeLoopers; 7975c672fc376ef9b3ceff61a96513242b0e5ebd60Marco Nelissen { 8075c672fc376ef9b3ceff61a96513242b0e5ebd60Marco Nelissen Mutex::Autolock autoLock(mLock); 8175c672fc376ef9b3ceff61a96513242b0e5ebd60Marco Nelissen 82938e2b34b16c3c1fd29c753eeb53ee95a2b2e2b3Nick Kralevich for (size_t i = mHandlers.size(); i > 0;) { 83938e2b34b16c3c1fd29c753eeb53ee95a2b2e2b3Nick Kralevich i--; 8475c672fc376ef9b3ceff61a96513242b0e5ebd60Marco Nelissen const HandlerInfo &info = mHandlers.valueAt(i); 8575c672fc376ef9b3ceff61a96513242b0e5ebd60Marco Nelissen 8675c672fc376ef9b3ceff61a96513242b0e5ebd60Marco Nelissen sp<ALooper> looper = info.mLooper.promote(); 8775c672fc376ef9b3ceff61a96513242b0e5ebd60Marco Nelissen if (looper == NULL) { 8875c672fc376ef9b3ceff61a96513242b0e5ebd60Marco Nelissen ALOGV("Unregistering stale handler %d", mHandlers.keyAt(i)); 8975c672fc376ef9b3ceff61a96513242b0e5ebd60Marco Nelissen mHandlers.removeItemsAt(i); 9075c672fc376ef9b3ceff61a96513242b0e5ebd60Marco Nelissen } else { 9175c672fc376ef9b3ceff61a96513242b0e5ebd60Marco Nelissen // At this point 'looper' might be the only sp<> keeping 9275c672fc376ef9b3ceff61a96513242b0e5ebd60Marco Nelissen // the object alive. To prevent it from going out of scope 9375c672fc376ef9b3ceff61a96513242b0e5ebd60Marco Nelissen // and having ~ALooper call this method again recursively 9475c672fc376ef9b3ceff61a96513242b0e5ebd60Marco Nelissen // and then deadlocking because of the Autolock above, add 9575c672fc376ef9b3ceff61a96513242b0e5ebd60Marco Nelissen // it to a Vector which will go out of scope after the lock 9675c672fc376ef9b3ceff61a96513242b0e5ebd60Marco Nelissen // has been released. 9775c672fc376ef9b3ceff61a96513242b0e5ebd60Marco Nelissen activeLoopers.add(looper); 9875c672fc376ef9b3ceff61a96513242b0e5ebd60Marco Nelissen } 9930873bfd08255e2c4e98ff5732ffff2838772617Andreas Huber } 10030873bfd08255e2c4e98ff5732ffff2838772617Andreas Huber } 10130873bfd08255e2c4e98ff5732ffff2838772617Andreas Huber} 10230873bfd08255e2c4e98ff5732ffff2838772617Andreas Huber 103f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissenstatic void makeFourCC(uint32_t fourcc, char *s) { 104f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen s[0] = (fourcc >> 24) & 0xff; 105f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen if (s[0]) { 106f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen s[1] = (fourcc >> 16) & 0xff; 107f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen s[2] = (fourcc >> 8) & 0xff; 108f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen s[3] = fourcc & 0xff; 109f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen s[4] = 0; 110f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen } else { 111f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen sprintf(s, "%u", fourcc); 112f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen } 113f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen} 114f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen 115f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissenvoid ALooperRoster::dump(int fd, const Vector<String16>& args) { 116f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen bool clear = false; 117f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen bool oldVerbose = verboseStats; 1185804a76ac5f9f3c311f1bbbcc5ebdc8f8568ae14Lajos Molnar for (size_t i = 0; i < args.size(); i++) { 119f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen if (args[i] == String16("-c")) { 120f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen clear = true; 121f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen } else if (args[i] == String16("-von")) { 122f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen verboseStats = true; 123f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen } else if (args[i] == String16("-voff")) { 124f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen verboseStats = false; 125f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen } 126f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen } 127f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen String8 s; 128f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen if (verboseStats && !oldVerbose) { 129f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen s.append("(verbose stats collection enabled, stats will be cleared)\n"); 130f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen } 131f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen 132f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen Mutex::Autolock autoLock(mLock); 133f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen size_t n = mHandlers.size(); 1345804a76ac5f9f3c311f1bbbcc5ebdc8f8568ae14Lajos Molnar s.appendFormat(" %zu registered handlers:\n", n); 135f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen 136f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen for (size_t i = 0; i < n; i++) { 1375804a76ac5f9f3c311f1bbbcc5ebdc8f8568ae14Lajos Molnar s.appendFormat(" %d: ", mHandlers.keyAt(i)); 138f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen HandlerInfo &info = mHandlers.editValueAt(i); 139f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen sp<ALooper> looper = info.mLooper.promote(); 140f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen if (looper != NULL) { 1415804a76ac5f9f3c311f1bbbcc5ebdc8f8568ae14Lajos Molnar s.append(looper->getName()); 142f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen sp<AHandler> handler = info.mHandler.promote(); 143f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen if (handler != NULL) { 1445804a76ac5f9f3c311f1bbbcc5ebdc8f8568ae14Lajos Molnar handler->mVerboseStats = verboseStats; 145f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen s.appendFormat(": %u messages processed", handler->mMessageCounter); 146f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen if (verboseStats) { 147f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen for (size_t j = 0; j < handler->mMessages.size(); j++) { 148f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen char fourcc[15]; 149f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen makeFourCC(handler->mMessages.keyAt(j), fourcc); 1505804a76ac5f9f3c311f1bbbcc5ebdc8f8568ae14Lajos Molnar s.appendFormat("\n %s: %u", 151f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen fourcc, 152f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen handler->mMessages.valueAt(j)); 153f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen } 154f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen } else { 155f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen handler->mMessages.clear(); 156f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen } 157f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen if (clear || (verboseStats && !oldVerbose)) { 158f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen handler->mMessageCounter = 0; 159f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen handler->mMessages.clear(); 160f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen } 161f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen } else { 162f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen s.append(": <stale handler>"); 163f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen } 164f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen } else { 165f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen s.append("<stale>"); 166f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen } 167f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen s.append("\n"); 168f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen } 169f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen write(fd, s.string(), s.size()); 170f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen} 171f09611f2f33752afc28141e1bbaa897651c05d6fMarco Nelissen 17272961230a5890071bcca436eb5630172ce84ec41Andreas Huber} // namespace android 173