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 17edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#define LOG_TAG "ProcessState" 18edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 19c5b2c0bf8007562536b822eb060fc54a01f8e08bMathias Agopian#include <binder/ProcessState.h> 20edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 21c5b2c0bf8007562536b822eb060fc54a01f8e08bMathias Agopian#include <binder/BpBinder.h> 22c5b2c0bf8007562536b822eb060fc54a01f8e08bMathias Agopian#include <binder/IPCThreadState.h> 232716e111df2b7cd2490029f4c88bcc6543c93416Steven Moreland#include <binder/IServiceManager.h> 242716e111df2b7cd2490029f4c88bcc6543c93416Steven Moreland#include <cutils/atomic.h> 25edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <utils/Log.h> 26edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <utils/String8.h> 27edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <utils/String8.h> 28edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <utils/threads.h> 29edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 30208059f67ed2dd9fa025e07fcb6954d3cb61c79eMathias Agopian#include <private/binder/binder_module.h> 31208059f67ed2dd9fa025e07fcb6954d3cb61c79eMathias Agopian#include <private/binder/Static.h> 32edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 33edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <errno.h> 34edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <fcntl.h> 35edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <stdio.h> 36edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <stdlib.h> 37edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <unistd.h> 38edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <sys/ioctl.h> 39edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <sys/mman.h> 40edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <sys/stat.h> 41a082fa8a6bd4303d5a5921133746f9e2856ab0d4Philip Cuadra#include <sys/types.h> 42edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 436ac7fb5aca33fca100bdba279847561b32c3f9acGanesh Mahendran#define BINDER_VM_SIZE ((1 * 1024 * 1024) - sysconf(_SC_PAGE_SIZE) * 2) 44376b822728c582a9deb26ce339deb5204ae4d22eWale Ogunwale#define DEFAULT_MAX_BINDER_THREADS 15 45edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 46a082fa8a6bd4303d5a5921133746f9e2856ab0d4Philip Cuadra// ------------------------------------------------------------------------- 47edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 48edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectnamespace android { 49376b822728c582a9deb26ce339deb5204ae4d22eWale Ogunwale 50edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectclass PoolThread : public Thread 51edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 52edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectpublic: 53e2347b7953f70232541bdc1b392230d6231aaeb9Chih-Hung Hsieh explicit PoolThread(bool isMain) 54edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project : mIsMain(isMain) 55edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project { 56edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 57edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 58edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectprotected: 59edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project virtual bool threadLoop() 60edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project { 61edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project IPCThreadState::self()->joinThreadPool(mIsMain); 62edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return false; 63edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 64edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 65edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project const bool mIsMain; 66edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project}; 67edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 68edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectsp<ProcessState> ProcessState::self() 69edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 70e8db871de7b26bf4fe7ae8d400c4a2c503cfe3a2Mathias Agopian Mutex::Autolock _l(gProcessMutex); 71e8db871de7b26bf4fe7ae8d400c4a2c503cfe3a2Mathias Agopian if (gProcess != NULL) { 72e8db871de7b26bf4fe7ae8d400c4a2c503cfe3a2Mathias Agopian return gProcess; 73e8db871de7b26bf4fe7ae8d400c4a2c503cfe3a2Mathias Agopian } 7455d871cc09b7493e2b7e5705ea9774fd5f4c626cMartijn Coenen gProcess = new ProcessState("/dev/binder"); 7555d871cc09b7493e2b7e5705ea9774fd5f4c626cMartijn Coenen return gProcess; 7655d871cc09b7493e2b7e5705ea9774fd5f4c626cMartijn Coenen} 7755d871cc09b7493e2b7e5705ea9774fd5f4c626cMartijn Coenen 7855d871cc09b7493e2b7e5705ea9774fd5f4c626cMartijn Coenensp<ProcessState> ProcessState::initWithDriver(const char* driver) 7955d871cc09b7493e2b7e5705ea9774fd5f4c626cMartijn Coenen{ 8055d871cc09b7493e2b7e5705ea9774fd5f4c626cMartijn Coenen Mutex::Autolock _l(gProcessMutex); 8155d871cc09b7493e2b7e5705ea9774fd5f4c626cMartijn Coenen if (gProcess != NULL) { 82ed1ffe06f3efc791d57ed2709bb5177f3067ece8Iliyan Malchev // Allow for initWithDriver to be called repeatedly with the same 83ed1ffe06f3efc791d57ed2709bb5177f3067ece8Iliyan Malchev // driver. 84ed1ffe06f3efc791d57ed2709bb5177f3067ece8Iliyan Malchev if (!strcmp(gProcess->getDriverName().c_str(), driver)) { 85ed1ffe06f3efc791d57ed2709bb5177f3067ece8Iliyan Malchev return gProcess; 86ed1ffe06f3efc791d57ed2709bb5177f3067ece8Iliyan Malchev } 8755d871cc09b7493e2b7e5705ea9774fd5f4c626cMartijn Coenen LOG_ALWAYS_FATAL("ProcessState was already initialized."); 8855d871cc09b7493e2b7e5705ea9774fd5f4c626cMartijn Coenen } 89376a55973530cb26a3f15a0ccf9f5ad269580466Steven Moreland 90376a55973530cb26a3f15a0ccf9f5ad269580466Steven Moreland if (access(driver, R_OK) == -1) { 91376a55973530cb26a3f15a0ccf9f5ad269580466Steven Moreland ALOGE("Binder driver %s is unavailable. Using /dev/binder instead.", driver); 92376a55973530cb26a3f15a0ccf9f5ad269580466Steven Moreland driver = "/dev/binder"; 93376a55973530cb26a3f15a0ccf9f5ad269580466Steven Moreland } 94376a55973530cb26a3f15a0ccf9f5ad269580466Steven Moreland 9555d871cc09b7493e2b7e5705ea9774fd5f4c626cMartijn Coenen gProcess = new ProcessState(driver); 96edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return gProcess; 97edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 98edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 99b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Crosssp<ProcessState> ProcessState::selfOrNull() 100b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross{ 101b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross Mutex::Autolock _l(gProcessMutex); 102b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross return gProcess; 103b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross} 104b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross 105edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectvoid ProcessState::setContextObject(const sp<IBinder>& object) 106edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 107edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project setContextObject(object, String16("default")); 108edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 109edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 1106f4f3ab36c5ed1df84eb3a9f7475f0ac42952f58Colin Crosssp<IBinder> ProcessState::getContextObject(const sp<IBinder>& /*caller*/) 111edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 112e16986cae281f118ecd563c384b7f6e5a4b937b5Jeff Brown return getStrongProxyForHandle(0); 113edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 114edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 115edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectvoid ProcessState::setContextObject(const sp<IBinder>& object, const String16& name) 116edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 117edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project AutoMutex _l(mLock); 118edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project mContexts.add(name, object); 119edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 120edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 121edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectsp<IBinder> ProcessState::getContextObject(const String16& name, const sp<IBinder>& caller) 122edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 123edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project mLock.lock(); 124edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project sp<IBinder> object( 125edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project mContexts.indexOfKey(name) >= 0 ? mContexts.valueFor(name) : NULL); 126edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project mLock.unlock(); 127edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 128edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project //printf("Getting context object %s for %p\n", String8(name).string(), caller.get()); 129edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 130edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (object != NULL) return object; 131edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 132edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // Don't attempt to retrieve contexts if we manage them 133edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (mManagesContexts) { 134e6f43ddce78d6846af12550ff9193c5c6fe5844bSteve Block ALOGE("getContextObject(%s) failed, but we manage the contexts!\n", 135edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project String8(name).string()); 136edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return NULL; 137edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 138edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 139edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project IPCThreadState* ipc = IPCThreadState::self(); 140edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project { 141edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Parcel data, reply; 142edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // no interface token on this magic transaction 143edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project data.writeString16(name); 144edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project data.writeStrongBinder(caller); 145edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t result = ipc->transact(0 /*magic*/, 0, data, &reply, 0); 146edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (result == NO_ERROR) { 147edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project object = reply.readStrongBinder(); 148edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 149edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 150edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 151edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project ipc->flushCommands(); 152edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 153edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (object != NULL) setContextObject(object, name); 154edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return object; 155edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 156edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 157edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectvoid ProcessState::startThreadPool() 158edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 159edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project AutoMutex _l(mLock); 160edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (!mThreadPoolStarted) { 161edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project mThreadPoolStarted = true; 162edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project spawnPooledThread(true); 163edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 164edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 165edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 166edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectbool ProcessState::isContextManager(void) const 167edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 168edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return mManagesContexts; 169edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 170edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 171edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectbool ProcessState::becomeContextManager(context_check_func checkFunc, void* userData) 172edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 173edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (!mManagesContexts) { 174edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project AutoMutex _l(mLock); 175edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project mBinderContextCheckFunc = checkFunc; 176edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project mBinderContextUserData = userData; 177e16986cae281f118ecd563c384b7f6e5a4b937b5Jeff Brown 178e16986cae281f118ecd563c384b7f6e5a4b937b5Jeff Brown int dummy = 0; 179e16986cae281f118ecd563c384b7f6e5a4b937b5Jeff Brown status_t result = ioctl(mDriverFD, BINDER_SET_CONTEXT_MGR, &dummy); 180e16986cae281f118ecd563c384b7f6e5a4b937b5Jeff Brown if (result == 0) { 181edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project mManagesContexts = true; 182e16986cae281f118ecd563c384b7f6e5a4b937b5Jeff Brown } else if (result == -1) { 183e16986cae281f118ecd563c384b7f6e5a4b937b5Jeff Brown mBinderContextCheckFunc = NULL; 184e16986cae281f118ecd563c384b7f6e5a4b937b5Jeff Brown mBinderContextUserData = NULL; 185e6f43ddce78d6846af12550ff9193c5c6fe5844bSteve Block ALOGE("Binder ioctl to become context manager failed: %s\n", strerror(errno)); 186edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 187edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 188edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return mManagesContexts; 189edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 190edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 191b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross// Get references to userspace objects held by the kernel binder driver 192b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross// Writes up to count elements into buf, and returns the total number 193b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross// of references the kernel has, which may be larger than count. 194b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross// buf may be NULL if count is 0. The pointers returned by this method 195b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross// should only be used for debugging and not dereferenced, they may 196b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross// already be invalid. 197b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Crossssize_t ProcessState::getKernelReferences(size_t buf_count, uintptr_t* buf) 198b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross{ 199b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross // TODO: remove these when they are defined by bionic's binder.h 200b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross struct binder_node_debug_info { 201b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross binder_uintptr_t ptr; 202b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross binder_uintptr_t cookie; 203b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross __u32 has_strong_ref; 204b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross __u32 has_weak_ref; 205b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross }; 206b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross#define BINDER_GET_NODE_DEBUG_INFO _IOWR('b', 11, struct binder_node_debug_info) 207b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross 208b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross binder_node_debug_info info = {}; 209b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross 210b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross uintptr_t* end = buf ? buf + buf_count : NULL; 211b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross size_t count = 0; 212b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross 213b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross do { 214b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross status_t result = ioctl(mDriverFD, BINDER_GET_NODE_DEBUG_INFO, &info); 215b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross if (result < 0) { 216b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross return -1; 217b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross } 218b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross if (info.ptr != 0) { 219b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross if (buf && buf < end) 220b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross *buf++ = info.ptr; 221b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross count++; 222b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross if (buf && buf < end) 223b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross *buf++ = info.cookie; 224b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross count++; 225b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross } 226b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross } while (info.ptr != 0); 227b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross 228b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross return count; 229b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross} 230b869cc94704d1a3d6226f471984eb33ff1bac7d5Colin Cross 231edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectProcessState::handle_entry* ProcessState::lookupHandleLocked(int32_t handle) 232edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 233edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project const size_t N=mHandleToObject.size(); 234edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (N <= (size_t)handle) { 235edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project handle_entry e; 236edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project e.binder = NULL; 237edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project e.refs = NULL; 238edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t err = mHandleToObject.insertAt(e, N, handle+1-N); 239edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (err < NO_ERROR) return NULL; 240edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 241edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return &mHandleToObject.editItemAt(handle); 242edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 243edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 244edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectsp<IBinder> ProcessState::getStrongProxyForHandle(int32_t handle) 245edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 246edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project sp<IBinder> result; 247edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 248edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project AutoMutex _l(mLock); 249edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 250edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project handle_entry* e = lookupHandleLocked(handle); 251edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 252edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (e != NULL) { 253edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // We need to create a new BpBinder if there isn't currently one, OR we 254edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // are unable to acquire a weak reference on this current one. See comment 255edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // in getWeakProxyForHandle() for more info about this. 256edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project IBinder* b = e->binder; 257edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (b == NULL || !e->refs->attemptIncWeak(this)) { 258a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor if (handle == 0) { 259a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor // Special case for context manager... 260a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor // The context manager is the only object for which we create 261a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor // a BpBinder proxy without already holding a reference. 262a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor // Perform a dummy transaction to ensure the context manager 263a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor // is registered before we create the first local reference 264a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor // to it (which will occur when creating the BpBinder). 265a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor // If a local reference is created for the BpBinder when the 266a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor // context manager is not present, the driver will fail to 267a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor // provide a reference to the context manager, but the 268a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor // driver API does not return status. 269a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor // 270a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor // Note that this is not race-free if the context manager 271a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor // dies while this code runs. 272a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor // 273a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor // TODO: add a driver API to wait for context manager, or 274a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor // stop special casing handle 0 for context manager and add 275a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor // a driver API to get a handle to the context manager with 276a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor // proper reference counting. 277a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor 278a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor Parcel data; 279a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor status_t status = IPCThreadState::self()->transact( 280a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor 0, IBinder::PING_TRANSACTION, data, NULL, 0); 281a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor if (status == DEAD_OBJECT) 282a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor return NULL; 283a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor } 284a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor 285d296d0cd620db158f50434a06a190334e386eab9Michael Wachenschwanz b = BpBinder::create(handle); 286edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project e->binder = b; 287edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (b) e->refs = b->getWeakRefs(); 288edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project result = b; 289edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } else { 290edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // This little bit of nastyness is to allow us to add a primary 291edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // reference to the remote proxy when this team doesn't have one 292edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // but another team is sending the handle to us. 293edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project result.force_set(b); 294edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project e->refs->decWeak(this); 295edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 296edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 297edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 298edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return result; 299edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 300edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 301edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectwp<IBinder> ProcessState::getWeakProxyForHandle(int32_t handle) 302edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 303edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project wp<IBinder> result; 304edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 305edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project AutoMutex _l(mLock); 306edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 307edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project handle_entry* e = lookupHandleLocked(handle); 308edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 309edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (e != NULL) { 310edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // We need to create a new BpBinder if there isn't currently one, OR we 311edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // are unable to acquire a weak reference on this current one. The 312edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // attemptIncWeak() is safe because we know the BpBinder destructor will always 313edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // call expungeHandle(), which acquires the same lock we are holding now. 314edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // We need to do this because there is a race condition between someone 315edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // releasing a reference on this BpBinder, and a new reference on its handle 316edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // arriving from the driver. 317edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project IBinder* b = e->binder; 318edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (b == NULL || !e->refs->attemptIncWeak(this)) { 319d296d0cd620db158f50434a06a190334e386eab9Michael Wachenschwanz b = BpBinder::create(handle); 320edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project result = b; 321edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project e->binder = b; 322edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (b) e->refs = b->getWeakRefs(); 323edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } else { 324edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project result = b; 325edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project e->refs->decWeak(this); 326edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 327edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 328edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 329edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return result; 330edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 331edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 332edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectvoid ProcessState::expungeHandle(int32_t handle, IBinder* binder) 333edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 334edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project AutoMutex _l(mLock); 335edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 336edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project handle_entry* e = lookupHandleLocked(handle); 337edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 338edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // This handle may have already been replaced with a new BpBinder 339edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // (if someone failed the AttemptIncWeak() above); we don't want 340edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // to overwrite it. 341edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (e && e->binder == binder) e->binder = NULL; 342edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 343edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 344e3e43b384e0603e5883b501cdb169641fab8fea2Mathias AgopianString8 ProcessState::makeBinderThreadName() { 345e3e43b384e0603e5883b501cdb169641fab8fea2Mathias Agopian int32_t s = android_atomic_add(1, &mThreadPoolSeq); 346a082fa8a6bd4303d5a5921133746f9e2856ab0d4Philip Cuadra pid_t pid = getpid(); 347e3e43b384e0603e5883b501cdb169641fab8fea2Mathias Agopian String8 name; 348a082fa8a6bd4303d5a5921133746f9e2856ab0d4Philip Cuadra name.appendFormat("Binder:%d_%X", pid, s); 349e3e43b384e0603e5883b501cdb169641fab8fea2Mathias Agopian return name; 350e3e43b384e0603e5883b501cdb169641fab8fea2Mathias Agopian} 351e3e43b384e0603e5883b501cdb169641fab8fea2Mathias Agopian 352edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectvoid ProcessState::spawnPooledThread(bool isMain) 353edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 354edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (mThreadPoolStarted) { 355e3e43b384e0603e5883b501cdb169641fab8fea2Mathias Agopian String8 name = makeBinderThreadName(); 356e3e43b384e0603e5883b501cdb169641fab8fea2Mathias Agopian ALOGV("Spawning new pooled thread, name=%s\n", name.string()); 357edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project sp<Thread> t = new PoolThread(isMain); 358e3e43b384e0603e5883b501cdb169641fab8fea2Mathias Agopian t->run(name.string()); 359edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 360edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 361edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 3621b80f793d2328dd94a151411a1cc3a676121ffc7Mathias Agopianstatus_t ProcessState::setThreadPoolMaxThreadCount(size_t maxThreads) { 3631b80f793d2328dd94a151411a1cc3a676121ffc7Mathias Agopian status_t result = NO_ERROR; 364376b822728c582a9deb26ce339deb5204ae4d22eWale Ogunwale if (ioctl(mDriverFD, BINDER_SET_MAX_THREADS, &maxThreads) != -1) { 365376b822728c582a9deb26ce339deb5204ae4d22eWale Ogunwale mMaxThreads = maxThreads; 366376b822728c582a9deb26ce339deb5204ae4d22eWale Ogunwale } else { 3671b80f793d2328dd94a151411a1cc3a676121ffc7Mathias Agopian result = -errno; 3681b80f793d2328dd94a151411a1cc3a676121ffc7Mathias Agopian ALOGE("Binder ioctl to set max threads failed: %s", strerror(-result)); 3691b80f793d2328dd94a151411a1cc3a676121ffc7Mathias Agopian } 3701b80f793d2328dd94a151411a1cc3a676121ffc7Mathias Agopian return result; 3711b80f793d2328dd94a151411a1cc3a676121ffc7Mathias Agopian} 3721b80f793d2328dd94a151411a1cc3a676121ffc7Mathias Agopian 373e3e43b384e0603e5883b501cdb169641fab8fea2Mathias Agopianvoid ProcessState::giveThreadPoolName() { 374e3e43b384e0603e5883b501cdb169641fab8fea2Mathias Agopian androidSetThreadName( makeBinderThreadName().string() ); 375e3e43b384e0603e5883b501cdb169641fab8fea2Mathias Agopian} 376e3e43b384e0603e5883b501cdb169641fab8fea2Mathias Agopian 3773206224672d0a86cdede609e83ccc985754fb6ecIliyan MalchevString8 ProcessState::getDriverName() { 3783206224672d0a86cdede609e83ccc985754fb6ecIliyan Malchev return mDriverName; 3793206224672d0a86cdede609e83ccc985754fb6ecIliyan Malchev} 3803206224672d0a86cdede609e83ccc985754fb6ecIliyan Malchev 38155d871cc09b7493e2b7e5705ea9774fd5f4c626cMartijn Coenenstatic int open_driver(const char *driver) 382edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 38355d871cc09b7493e2b7e5705ea9774fd5f4c626cMartijn Coenen int fd = open(driver, O_RDWR | O_CLOEXEC); 384edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (fd >= 0) { 38578181df1efee04bb861893714d8b11a24243153fJin Wei int vers = 0; 386edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t result = ioctl(fd, BINDER_VERSION, &vers); 387edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (result == -1) { 388e6f43ddce78d6846af12550ff9193c5c6fe5844bSteve Block ALOGE("Binder ioctl to obtain version failed: %s", strerror(errno)); 389edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project close(fd); 390edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project fd = -1; 391edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 392edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (result != 0 || vers != BINDER_CURRENT_PROTOCOL_VERSION) { 39367ac00f7689d04bb617cba55b3adefd780391bacGreg Hartman ALOGE("Binder driver protocol(%d) does not match user space protocol(%d)! ioctl() return value: %d", 39467ac00f7689d04bb617cba55b3adefd780391bacGreg Hartman vers, BINDER_CURRENT_PROTOCOL_VERSION, result); 395edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project close(fd); 396edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project fd = -1; 397edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 398376b822728c582a9deb26ce339deb5204ae4d22eWale Ogunwale size_t maxThreads = DEFAULT_MAX_BINDER_THREADS; 399edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project result = ioctl(fd, BINDER_SET_MAX_THREADS, &maxThreads); 400edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (result == -1) { 401e6f43ddce78d6846af12550ff9193c5c6fe5844bSteve Block ALOGE("Binder ioctl to set max threads failed: %s", strerror(errno)); 402edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 403edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } else { 40455d871cc09b7493e2b7e5705ea9774fd5f4c626cMartijn Coenen ALOGW("Opening '%s' failed: %s\n", driver, strerror(errno)); 405edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 406edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return fd; 407edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 408edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 40955d871cc09b7493e2b7e5705ea9774fd5f4c626cMartijn CoenenProcessState::ProcessState(const char *driver) 4103206224672d0a86cdede609e83ccc985754fb6ecIliyan Malchev : mDriverName(String8(driver)) 4113206224672d0a86cdede609e83ccc985754fb6ecIliyan Malchev , mDriverFD(open_driver(driver)) 412edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project , mVMStart(MAP_FAILED) 413376b822728c582a9deb26ce339deb5204ae4d22eWale Ogunwale , mThreadCountLock(PTHREAD_MUTEX_INITIALIZER) 414376b822728c582a9deb26ce339deb5204ae4d22eWale Ogunwale , mThreadCountDecrement(PTHREAD_COND_INITIALIZER) 415376b822728c582a9deb26ce339deb5204ae4d22eWale Ogunwale , mExecutingThreadsCount(0) 416376b822728c582a9deb26ce339deb5204ae4d22eWale Ogunwale , mMaxThreads(DEFAULT_MAX_BINDER_THREADS) 41796e8322f4d11af8538d6d0db5f1a11338b8aee9dColin Cross , mStarvationStartTimeMs(0) 418edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project , mManagesContexts(false) 419edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project , mBinderContextCheckFunc(NULL) 420edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project , mBinderContextUserData(NULL) 421edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project , mThreadPoolStarted(false) 422edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project , mThreadPoolSeq(1) 423edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 424edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (mDriverFD >= 0) { 425edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // mmap the binder, providing a chunk of virtual address space to receive transactions. 426edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project mVMStart = mmap(0, BINDER_VM_SIZE, PROT_READ, MAP_PRIVATE | MAP_NORESERVE, mDriverFD, 0); 427edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (mVMStart == MAP_FAILED) { 428edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // *sigh* 429376a55973530cb26a3f15a0ccf9f5ad269580466Steven Moreland ALOGE("Using %s failed: unable to mmap transaction memory.\n", mDriverName.c_str()); 430edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project close(mDriverFD); 431edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project mDriverFD = -1; 4323206224672d0a86cdede609e83ccc985754fb6ecIliyan Malchev mDriverName.clear(); 433edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 434edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 435e16986cae281f118ecd563c384b7f6e5a4b937b5Jeff Brown 436e16986cae281f118ecd563c384b7f6e5a4b937b5Jeff Brown LOG_ALWAYS_FATAL_IF(mDriverFD < 0, "Binder driver could not be opened. Terminating."); 437edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 438edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 439edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectProcessState::~ProcessState() 440edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 441ff405785386ed8bdee50c4afdc4a4f9a73bcb81ezhongjie if (mDriverFD >= 0) { 442ff405785386ed8bdee50c4afdc4a4f9a73bcb81ezhongjie if (mVMStart != MAP_FAILED) { 443ff405785386ed8bdee50c4afdc4a4f9a73bcb81ezhongjie munmap(mVMStart, BINDER_VM_SIZE); 444ff405785386ed8bdee50c4afdc4a4f9a73bcb81ezhongjie } 445ff405785386ed8bdee50c4afdc4a4f9a73bcb81ezhongjie close(mDriverFD); 446ff405785386ed8bdee50c4afdc4a4f9a73bcb81ezhongjie } 447ff405785386ed8bdee50c4afdc4a4f9a73bcb81ezhongjie mDriverFD = -1; 448edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 449edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 450edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project}; // namespace android 451