1edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project/* 2edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Copyright (C) 2005 The Android Open Source Project 3edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 4edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 5edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * you may not use this file except in compliance with the License. 6edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * You may obtain a copy of the License at 7edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 8edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 9edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 10edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 11edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 12edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * See the License for the specific language governing permissions and 14edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * limitations under the License. 15edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project */ 16edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 17c5b2c0bf8007562536b822eb060fc54a01f8e08bMathias Agopian#include <binder/Binder.h> 18edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 1908ff802151ea3089a5f352dfc795c99017c1d122Hans Boehm#include <stdatomic.h> 20555f89d8df316cdc5a25dbedb8614c2ac7a5e0a9Dianne Hackborn#include <utils/misc.h> 21c5b2c0bf8007562536b822eb060fc54a01f8e08bMathias Agopian#include <binder/BpBinder.h> 22c5b2c0bf8007562536b822eb060fc54a01f8e08bMathias Agopian#include <binder/IInterface.h> 23c5b2c0bf8007562536b822eb060fc54a01f8e08bMathias Agopian#include <binder/Parcel.h> 24edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 25edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <stdio.h> 26edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 27edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectnamespace android { 28edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 29edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project// --------------------------------------------------------------------------- 30edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 3183c0446f27b9542d6c2e724817b2b2d8d1f55085Mathias AgopianIBinder::IBinder() 3283c0446f27b9542d6c2e724817b2b2d8d1f55085Mathias Agopian : RefBase() 3383c0446f27b9542d6c2e724817b2b2d8d1f55085Mathias Agopian{ 3483c0446f27b9542d6c2e724817b2b2d8d1f55085Mathias Agopian} 3583c0446f27b9542d6c2e724817b2b2d8d1f55085Mathias Agopian 3683c0446f27b9542d6c2e724817b2b2d8d1f55085Mathias AgopianIBinder::~IBinder() 3783c0446f27b9542d6c2e724817b2b2d8d1f55085Mathias Agopian{ 3883c0446f27b9542d6c2e724817b2b2d8d1f55085Mathias Agopian} 3983c0446f27b9542d6c2e724817b2b2d8d1f55085Mathias Agopian 4083c0446f27b9542d6c2e724817b2b2d8d1f55085Mathias Agopian// --------------------------------------------------------------------------- 4183c0446f27b9542d6c2e724817b2b2d8d1f55085Mathias Agopian 426f4f3ab36c5ed1df84eb3a9f7475f0ac42952f58Colin Crosssp<IInterface> IBinder::queryLocalInterface(const String16& /*descriptor*/) 43edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 44edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return NULL; 45edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 46edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 47edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectBBinder* IBinder::localBinder() 48edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 49edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return NULL; 50edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 51edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 52edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectBpBinder* IBinder::remoteBinder() 53edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 54edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return NULL; 55edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 56edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 57edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectbool IBinder::checkSubclass(const void* /*subclassID*/) const 58edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 59edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return false; 60edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 61edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 62edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project// --------------------------------------------------------------------------- 63edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 64edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectclass BBinder::Extras 65edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 66edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectpublic: 67edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Mutex mLock; 68edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project BpBinder::ObjectManager mObjects; 69edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project}; 70edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 71edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project// --------------------------------------------------------------------------- 72edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 73edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectBBinder::BBinder() 74edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 7508ff802151ea3089a5f352dfc795c99017c1d122Hans Boehm atomic_init(&mExtras, 0); 76edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 77edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 78edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectbool BBinder::isBinderAlive() const 79edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 80edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return true; 81edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 82edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 83edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectstatus_t BBinder::pingBinder() 84edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 85edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return NO_ERROR; 86edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 87edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 8883c0446f27b9542d6c2e724817b2b2d8d1f55085Mathias Agopianconst String16& BBinder::getInterfaceDescriptor() const 89edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 90386a332b4f70718cccb08d5511d66e9f4f5bd409Dan Egnor // This is a local static rather than a global static, 91386a332b4f70718cccb08d5511d66e9f4f5bd409Dan Egnor // to avoid static initializer ordering issues. 92386a332b4f70718cccb08d5511d66e9f4f5bd409Dan Egnor static String16 sEmptyDescriptor; 9332397c1cd3327905173b36baa6fd1c579bc328ffSteve Block ALOGW("reached BBinder::getInterfaceDescriptor (this=%p)", this); 9483c0446f27b9542d6c2e724817b2b2d8d1f55085Mathias Agopian return sEmptyDescriptor; 95edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 96edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 97edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectstatus_t BBinder::transact( 98edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 99edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 100edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project data.setDataPosition(0); 101edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 102edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t err = NO_ERROR; 103edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project switch (code) { 104edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project case PING_TRANSACTION: 105edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project reply->writeInt32(pingBinder()); 106edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project break; 107edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project default: 108edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project err = onTransact(code, data, reply, flags); 109edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project break; 110edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 111edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 112edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (reply != NULL) { 113edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project reply->setDataPosition(0); 114edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 115edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 116edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return err; 117edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 118edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 119edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectstatus_t BBinder::linkToDeath( 1206f4f3ab36c5ed1df84eb3a9f7475f0ac42952f58Colin Cross const sp<DeathRecipient>& /*recipient*/, void* /*cookie*/, 1216f4f3ab36c5ed1df84eb3a9f7475f0ac42952f58Colin Cross uint32_t /*flags*/) 122edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 123edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return INVALID_OPERATION; 124edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 125edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 126edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectstatus_t BBinder::unlinkToDeath( 1276f4f3ab36c5ed1df84eb3a9f7475f0ac42952f58Colin Cross const wp<DeathRecipient>& /*recipient*/, void* /*cookie*/, 1286f4f3ab36c5ed1df84eb3a9f7475f0ac42952f58Colin Cross uint32_t /*flags*/, wp<DeathRecipient>* /*outRecipient*/) 129edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 130edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return INVALID_OPERATION; 131edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 132edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 1336f4f3ab36c5ed1df84eb3a9f7475f0ac42952f58Colin Cross status_t BBinder::dump(int /*fd*/, const Vector<String16>& /*args*/) 134edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 135edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return NO_ERROR; 136edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 137edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 138edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectvoid BBinder::attachObject( 139edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project const void* objectID, void* object, void* cleanupCookie, 140edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project object_cleanup_func func) 141edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 14208ff802151ea3089a5f352dfc795c99017c1d122Hans Boehm Extras* e = reinterpret_cast<Extras*>( 14308ff802151ea3089a5f352dfc795c99017c1d122Hans Boehm atomic_load_explicit(&mExtras, memory_order_acquire)); 144edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 145edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (!e) { 146edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project e = new Extras; 147553231f65e4e8d20a6f665ba86e3785a7243595fHans Boehm uintptr_t expected = 0; 14808ff802151ea3089a5f352dfc795c99017c1d122Hans Boehm if (!atomic_compare_exchange_strong_explicit( 14908ff802151ea3089a5f352dfc795c99017c1d122Hans Boehm &mExtras, &expected, 15008ff802151ea3089a5f352dfc795c99017c1d122Hans Boehm reinterpret_cast<uintptr_t>(e), 15108ff802151ea3089a5f352dfc795c99017c1d122Hans Boehm memory_order_release, 15208ff802151ea3089a5f352dfc795c99017c1d122Hans Boehm memory_order_acquire)) { 153edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project delete e; 15408ff802151ea3089a5f352dfc795c99017c1d122Hans Boehm e = reinterpret_cast<Extras*>(expected); // Filled in by CAS 155edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 156edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (e == 0) return; // out of memory 157edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 158edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 159edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project AutoMutex _l(e->mLock); 160edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project e->mObjects.attach(objectID, object, cleanupCookie, func); 161edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 162edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 163edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectvoid* BBinder::findObject(const void* objectID) const 164edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 16508ff802151ea3089a5f352dfc795c99017c1d122Hans Boehm Extras* e = reinterpret_cast<Extras*>( 16608ff802151ea3089a5f352dfc795c99017c1d122Hans Boehm atomic_load_explicit(&mExtras, memory_order_acquire)); 167edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (!e) return NULL; 168edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 169edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project AutoMutex _l(e->mLock); 170edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return e->mObjects.find(objectID); 171edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 172edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 173edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectvoid BBinder::detachObject(const void* objectID) 174edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 17508ff802151ea3089a5f352dfc795c99017c1d122Hans Boehm Extras* e = reinterpret_cast<Extras*>( 17608ff802151ea3089a5f352dfc795c99017c1d122Hans Boehm atomic_load_explicit(&mExtras, memory_order_acquire)); 177edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (!e) return; 178edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 179edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project AutoMutex _l(e->mLock); 180edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project e->mObjects.detach(objectID); 181edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 182edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 183edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectBBinder* BBinder::localBinder() 184edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 185edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return this; 186edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 187edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 188edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectBBinder::~BBinder() 189edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 19008ff802151ea3089a5f352dfc795c99017c1d122Hans Boehm Extras* e = reinterpret_cast<Extras*>( 19108ff802151ea3089a5f352dfc795c99017c1d122Hans Boehm atomic_load_explicit(&mExtras, memory_order_relaxed)); 19208ff802151ea3089a5f352dfc795c99017c1d122Hans Boehm if (e) delete e; 193edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 194edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 195edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 196edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectstatus_t BBinder::onTransact( 1976f4f3ab36c5ed1df84eb3a9f7475f0ac42952f58Colin Cross uint32_t code, const Parcel& data, Parcel* reply, uint32_t /*flags*/) 198edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 199edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project switch (code) { 200edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project case INTERFACE_TRANSACTION: 201edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project reply->writeString16(getInterfaceDescriptor()); 202edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return NO_ERROR; 203edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 204edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project case DUMP_TRANSACTION: { 205edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project int fd = data.readFileDescriptor(); 206edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project int argc = data.readInt32(); 207edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Vector<String16> args; 208edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project for (int i = 0; i < argc && data.dataAvail() > 0; i++) { 209edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project args.add(data.readString16()); 210edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 211edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return dump(fd, args); 212edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 213555f89d8df316cdc5a25dbedb8614c2ac7a5e0a9Dianne Hackborn 214555f89d8df316cdc5a25dbedb8614c2ac7a5e0a9Dianne Hackborn case SYSPROPS_TRANSACTION: { 215555f89d8df316cdc5a25dbedb8614c2ac7a5e0a9Dianne Hackborn report_sysprop_change(); 216555f89d8df316cdc5a25dbedb8614c2ac7a5e0a9Dianne Hackborn return NO_ERROR; 217555f89d8df316cdc5a25dbedb8614c2ac7a5e0a9Dianne Hackborn } 218555f89d8df316cdc5a25dbedb8614c2ac7a5e0a9Dianne Hackborn 219edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project default: 220edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return UNKNOWN_TRANSACTION; 221edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 222edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 223edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 224edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project// --------------------------------------------------------------------------- 225edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 226edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectenum { 227edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // This is used to transfer ownership of the remote binder from 228edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // the BpRefBase object holding it (when it is constructed), to the 229edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // owner of the BpRefBase object when it first acquires that BpRefBase. 230edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project kRemoteAcquired = 0x00000001 231edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project}; 232edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 233edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectBpRefBase::BpRefBase(const sp<IBinder>& o) 234edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project : mRemote(o.get()), mRefs(NULL), mState(0) 235edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 236edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project extendObjectLifetime(OBJECT_LIFETIME_WEAK); 237edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 238edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (mRemote) { 239edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project mRemote->incStrong(this); // Removed on first IncStrong(). 240edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project mRefs = mRemote->createWeak(this); // Held for our entire lifetime. 241edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 242edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 243edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 244edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectBpRefBase::~BpRefBase() 245edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 246edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (mRemote) { 247edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (!(mState&kRemoteAcquired)) { 248edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project mRemote->decStrong(this); 249edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 250edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project mRefs->decWeak(this); 251edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 252edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 253edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 254edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectvoid BpRefBase::onFirstRef() 255edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 256edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project android_atomic_or(kRemoteAcquired, &mState); 257edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 258edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 2596f4f3ab36c5ed1df84eb3a9f7475f0ac42952f58Colin Crossvoid BpRefBase::onLastStrongRef(const void* /*id*/) 260edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 261edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (mRemote) { 262edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project mRemote->decStrong(this); 263edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 264edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 265edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 2666f4f3ab36c5ed1df84eb3a9f7475f0ac42952f58Colin Crossbool BpRefBase::onIncStrongAttempted(uint32_t /*flags*/, const void* /*id*/) 267edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 268edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return mRemote ? mRefs->attemptIncStrong(this) : false; 269edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 270edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 271edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project// --------------------------------------------------------------------------- 272edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 273edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project}; // namespace android 274