JAVA层HIDL服务的获取原理-Android10.0 HwBinder通信原理（九）

摘要：本节主要来讲解Android10.0 JAVA层HIDL服务的获取原理

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[Android取经之路] 的源码都基于Android-Q（10.0）进行分析

[Android取经之路] 系列文章：

《系统启动篇》

Android系统架构
Android是怎么启动的
Android 10.0系统启动之init进程
Android10.0系统启动之Zygote进程
Android 10.0 系统启动之SystemServer进程
Android 10.0 系统服务之ActivityMnagerService
Android10.0系统启动之Launcher(桌面)启动流程
Android10.0应用进程创建过程以及Zygote的fork流程
Android 10.0 PackageManagerService（一）工作原理及启动流程
Android 10.0 PackageManagerService（二）权限扫描
Android 10.0 PackageManagerService（三）APK扫描
Android 10.0 PackageManagerService（四）APK安装流程

《日志系统篇》

Android10.0 日志系统分析(一)-logd、logcat 指令说明、分类和属性
Android10.0 日志系统分析(二)-logd、logcat架构分析及日志系统初始化
Android10.0 日志系统分析(三)-logd、logcat读写日志源码分析
Android10.0 日志系统分析(四)-selinux、kernel日志在logd中的实现

《Binder通信原理》：

Android10.0 Binder通信原理(一)Binder、HwBinder、VndBinder概要
Android10.0 Binder通信原理(二)-Binder入门篇
Android10.0 Binder通信原理(三)-ServiceManager篇
Android10.0 Binder通信原理(四)-Native-C\C++实例分析
Android10.0 Binder通信原理(五)-Binder驱动分析
Android10.0 Binder通信原理(六)-Binder数据如何完成定向打击
Android10.0 Binder通信原理(七)-Framework binder示例
Android10.0 Binder通信原理(八)-Framework层分析
Android10.0 Binder通信原理(九)-AIDL Binder示例
Android10.0 Binder通信原理(十)-AIDL原理分析-Proxy-Stub设计模式
Android10.0 Binder通信原理(十一)-Binder总结

《HwBinder通信原理》

HwBinder入门篇-Android10.0 HwBinder通信原理(一)
HIDL详解-Android10.0 HwBinder通信原理(二)
HIDL示例-C++服务创建Client验证-Android10.0 HwBinder通信原理(三)
HIDL示例-JAVA服务创建-Client验证-Android10.0 HwBinder通信原理(四)
HwServiceManager篇-Android10.0 HwBinder通信原理(五)
Native层HIDL服务的注册原理-Android10.0 HwBinder通信原理(六)
Native层HIDL服务的获取原理-Android10.0 HwBinder通信原理(七)
JAVA层HIDL服务的注册原理-Android10.0 HwBinder通信原理(八)
JAVA层HIDL服务的获取原理-Android10.0 HwBinder通信原理（九）
HwBinder驱动篇-Android10.0 HwBinder通信原理(十)
HwBinder原理总结-Android10.0 HwBinder通信原理(十一)

《编译原理》

编译系统入门篇-Android10.0编译系统（一）
编译环境初始化-Android10.0编译系统（二）
make编译过程-Android10.0编译系统（三）
Image打包流程-Android10.0编译系统（四）
Kati详解-Android10.0编译系统（五）

上一节，我们学习了JAVA层 HIDL服务的注册获取原理，这一节我们来看看JAVA层HIDL服务的获取原理。

5. 获取服务

JAVA层HIDL服务获取如下图所示：

5.1 获取服务调用栈

5.2 onClick()

[/vendor/ingres/hidl_demo/app/src/main/java/com/android/hidldemo/MainActivity.java]private IDemo mHidlService;public void onClick(View v) {switch (v.getId()) {case R.id.getHelloBtn:Log.d(TAG, "start to click");try {//1.获取IDemo的hidl服务mHidlService = IDemo.getService();if (mHidlService == null) {Log.e(TAG, "fail to get demo service");} else {Log.d(TAG, "success to get demo service");//2.调用hidl接口String result =  mHidlService.getHelloString("IngresGe");Log.d(TAG, "HIDL return:" + result);}} catch (RemoteException ex) {Log.e(TAG, "exception, fail to get demo service");}break;}}

5.3 getService()

[/frameworks/base/core/java/android/os/HwBinder.java]
public static native final IHwBinder getService(String iface,String serviceName,boolean retry)throws RemoteException, NoSuchElementException;

这是一个JNI接口，参考上一节《JAVA层HIDL服务的注册原理》中的JNI的转换，在JNI层，进入JHwBinder_native_getService()

5.4 JHwBinder_native_getService


[/frameworks/base/core/jni/android_os_HwBinder.cpp]
static jobject JHwBinder_native_getService(JNIEnv *env,jclass /* clazzObj */,jstring ifaceNameObj,jstring serviceNameObj,jboolean retry) {using ::android::hidl::base::V1_0::IBase;using ::android::hardware::details::getRawServiceInternal;std::string ifaceName;{ScopedUtfChars str(env, ifaceNameObj);if (str.c_str() == nullptr) {return nullptr;  // NPE will be pending.}ifaceName = str.c_str();}std::string serviceName;{ScopedUtfChars str(env, serviceNameObj);if (str.c_str() == nullptr) {return nullptr;  // NPE will be pending.}serviceName = str.c_str();}//1.根据servicename获取一个IBase对象，通过前文可知，这里是一个 BpHwBase对象sp<IBase> ret = getRawServiceInternal(ifaceName, serviceName, retry /* retry */, false /* getStub */);//2.将IBase对象转换为binder对象，参考[5.8]sp<hardware::IBinder> service = hardware::toBinder<hidl::base::V1_0::IBase>(ret);if (service == NULL) {signalExceptionForError(env, NAME_NOT_FOUND);return NULL;}LOG(INFO) << "HwBinder: Starting thread pool for getting: " << ifaceName << "/" << serviceName;::android::hardware::ProcessState::self()->startThreadPool();//转换hidlservice，使之成为一个Java层HwRemoteBinder对象，参考[5.9]return JHwRemoteBinder::NewObject(env, service);
}

5.5 getRawServiceInternal()

[/system/libhidl/transport/ServiceManagement.cpp]
sp<::android::hidl::base::V1_0::IBase> getRawServiceInternal(const std::string& descriptor,const std::string& instance,bool retry, bool getStub) {using Transport = ::android::hidl::manager::V1_0::IServiceManager::Transport;using ::android::hidl::manager::V1_0::IServiceManager;sp<Waiter> waiter;sp<IServiceManager1_1> sm;Transport transport = Transport::EMPTY;if (kIsRecovery) {transport = Transport::PASSTHROUGH;} else {//1.拿到HwServiceManager的对象，参考[4.4.3]sm = defaultServiceManager1_1();if (sm == nullptr) {ALOGE("getService: defaultServiceManager() is null");return nullptr;}//2.获取IDemo服务的transport，确认是直通式PASSTHROUGH，还是绑定式：HWBINDER//transport可以在/vendor/etc/vintf/manifest.xml中查看<transport>hwbinder</transport>Return<Transport> transportRet = sm->getTransport(descriptor, instance);if (!transportRet.isOk()) {ALOGE("getService: defaultServiceManager()->getTransport returns %s",transportRet.description().c_str());return nullptr;}transport = transportRet;}const bool vintfHwbinder = (transport == Transport::HWBINDER); //绑定式服务const bool vintfPassthru = (transport == Transport::PASSTHROUGH); //直通式服务...for (int tries = 0; !getStub && (vintfHwbinder || vintfLegacy); tries++) {if (waiter == nullptr && tries > 0) {waiter = new Waiter(descriptor, instance, sm);}if (waiter != nullptr) {waiter->reset();  // don't reorder this -- see comments on reset()}//3.如果是绑定式的服务，调用 BpHwServiceManager::get()，参考[5.6]Return<sp<IBase>> ret = sm->get(descriptor, instance);if (!ret.isOk()) {ALOGE("getService: defaultServiceManager()->get returns %s for %s/%s.",ret.description().c_str(), descriptor.c_str(), instance.c_str());break;}sp<IBase> base = ret;if (base != nullptr) {Return<bool> canCastRet =details::canCastInterface(base.get(), descriptor.c_str(), true /* emitError */);if (canCastRet.isOk() && canCastRet) {if (waiter != nullptr) {waiter->done();}return base; // still needs to be wrapped by Bp class.}if (!handleCastError(canCastRet, descriptor, instance)) break;}// In case of legacy or we were not asked to retry, don't.if (vintfLegacy || !retry) break;if (waiter != nullptr) {ALOGI("getService: Trying again for %s/%s...", descriptor.c_str(), instance.c_str());waiter->wait(true /* timeout */);}}if (waiter != nullptr) {waiter->done();}if (getStub || vintfPassthru || vintfLegacy) {//如果是直通式的hidl服务，获取直通式的HwServiceManager对象来获取服务const sp<IServiceManager> pm = getPassthroughServiceManager();if (pm != nullptr) {sp<IBase> base = pm->get(descriptor, instance).withDefault(nullptr);if (!getStub || trebleTestingOverride) {base = wrapPassthrough(base);}return base;}}return nullptr;
}

getRawServiceInternal()步骤如下：

1.获取HwServiceManager的代理对象

2.获取IDemo 这个hidl服务的transport，来确认是绑定式服务，还是直通式服务

3.根据transport类型，调用不同的接口来获取服务对象 (我们设计的IDemo是绑定式hidl服务)

5.6 BpHwServiceManager::get()

[/out/soong/.intermediates/system/libhidl/transport/manager/1.2/android.hidl.manager@1.2_genc++/gen/android/hidl/manager/1.2/ServiceManagerAll.cpp]
::android::hardware::Return<::android::sp<::android::hidl::base::V1_0::IBase>> BpHwServiceManager::get(const ::android::hardware::hidl_string& fqName, const ::android::hardware::hidl_string& name){::android::hardware::Return<::android::sp<::android::hidl::base::V1_0::IBase>>  _hidl_out = ::android::hidl::manager::V1_0::BpHwServiceManager::_hidl_get(this, this, fqName, name);return _hidl_out;
}

_hidl_get流程如下：

1.准备两个Parcel结构-- _hidl_data，_hidl_reply

2.组装Parcel数据

3.写入RPC头信息"android.hidl.manager@1.2::IServiceManager"

4.写入服务名称，如果没有配置的话，name为"default"

5.调用remote的transact，发送 1 /* get */的命令获取hidl服务

7.得到返回的reply数据

8.从reply中读取hidl binder的信息，转换成hidl service，发送出去


::android::hardware::Return<::android::sp<::android::hidl::base::V1_0::IBase>> BpHwServiceManager::_hidl_get(::android::hardware::IInterface *_hidl_this, ::android::hardware::details::HidlInstrumentor *_hidl_this_instrumentor, const ::android::hardware::hidl_string& fqName, const ::android::hardware::hidl_string& name) {...::android::hardware::Parcel _hidl_data; //定义一个Parcel的data数据包::android::hardware::Parcel _hidl_reply;//定义一个Parcel的reply数据包::android::status_t _hidl_err;::android::hardware::Status _hidl_status;::android::sp<::android::hidl::base::V1_0::IBase> _hidl_out_service;//1.写入RPC头信息"android.hidl.manager@1.2::IServiceManager"_hidl_err = _hidl_data.writeInterfaceToken(BpHwServiceManager::descriptor);if (_hidl_err != ::android::OK) { goto _hidl_error; }size_t _hidl_fqName_parent;//2.写入fqName，如果没有配置的话，name为"default"_hidl_err = _hidl_data.writeBuffer(&fqName, sizeof(fqName), &_hidl_fqName_parent);if (_hidl_err != ::android::OK) { goto _hidl_error; }_hidl_err = ::android::hardware::writeEmbeddedToParcel(fqName,&_hidl_data,_hidl_fqName_parent,0 /* parentOffset */);if (_hidl_err != ::android::OK) { goto _hidl_error; }size_t _hidl_name_parent;//3.写入hidl 服务name_hidl_err = _hidl_data.writeBuffer(&name, sizeof(name), &_hidl_name_parent);if (_hidl_err != ::android::OK) { goto _hidl_error; }_hidl_err = ::android::hardware::writeEmbeddedToParcel(name,&_hidl_data,_hidl_name_parent,0 /* parentOffset */);if (_hidl_err != ::android::OK) { goto _hidl_error; }//5.调用BpHwBinder::transact()//_hidl_this 指的是 BpHwServiceManager，通过asBinder转换为传输层面的BpHwBinder对象，其实就是取出BpHwServiceManager的成员变量mRemote的值_hidl_err = ::android::hardware::IInterface::asBinder(_hidl_this)->transact(1 /* get */, _hidl_data, &_hidl_reply);if (_hidl_err != ::android::OK) { goto _hidl_error; }//6.从_hidl_reply读取返回结果_hidl_err = ::android::hardware::readFromParcel(&_hidl_status, _hidl_reply);if (_hidl_err != ::android::OK) { goto _hidl_error; }if (!_hidl_status.isOk()) { return _hidl_status; }{//7.从reply的数据中读取，hidl_Binder::android::sp<::android::hardware::IBinder> _hidl_binder;_hidl_err = _hidl_reply.readNullableStrongBinder(&_hidl_binder);if (_hidl_err != ::android::OK) { goto _hidl_error; }//8.把hidl binder转换成hidl service_hidl_out_service = ::android::hardware::fromBinder<::android::hidl::base::V1_0::IBase,::android::hidl::base::V1_0::BpHwBase,::android::hidl::base::V1_0::BnHwBase>(_hidl_binder);}..._hidl_status.setFromStatusT(_hidl_err);//9.返回hidl service对象return ::android::hardware::Return<::android::sp<::android::hidl::base::V1_0::IBase>>(_hidl_out_service);_hidl_error:_hidl_status.setFromStatusT(_hidl_err);return ::android::hardware::Return<::android::sp<::android::hidl::base::V1_0::IBase>>(_hidl_status);
}

根据如下调用栈所示，BpHwBinder::transact()最终会转到BnHwServiceManager::_hidl_get()

5.7 BnHwServiceManager::_hidl_get()

[/out/soong/.intermediates/system/libhidl/transport/manager/1.2/android.hidl.manager@1.2_genc++/gen/android/hidl/manager/1.2/ServiceManagerAll.cpp]
::android::status_t BnHwServiceManager::_hidl_get(::android::hidl::base::V1_0::BnHwBase* _hidl_this,const ::android::hardware::Parcel &_hidl_data,::android::hardware::Parcel *_hidl_reply,TransactCallback _hidl_cb) {...::android::status_t _hidl_err = ::android::OK;if (!_hidl_data.enforceInterface(BnHwServiceManager::Pure::descriptor)) {_hidl_err = ::android::BAD_TYPE;return _hidl_err;}const ::android::hardware::hidl_string* fqName;const ::android::hardware::hidl_string* name;size_t _hidl_fqName_parent;//1.获取hidl服务的fqName_hidl_err = _hidl_data.readBuffer(sizeof(*fqName), &_hidl_fqName_parent,  reinterpret_cast<const void **>(&fqName));if (_hidl_err != ::android::OK) { return _hidl_err; }_hidl_err = ::android::hardware::readEmbeddedFromParcel(const_cast<::android::hardware::hidl_string &>(*fqName),_hidl_data,_hidl_fqName_parent,0 /* parentOffset */);if (_hidl_err != ::android::OK) { return _hidl_err; }size_t _hidl_name_parent;//2.获取hidl服务的name_hidl_err = _hidl_data.readBuffer(sizeof(*name), &_hidl_name_parent,  reinterpret_cast<const void **>(&name));if (_hidl_err != ::android::OK) { return _hidl_err; }_hidl_err = ::android::hardware::readEmbeddedFromParcel(const_cast<::android::hardware::hidl_string &>(*name),_hidl_data,_hidl_name_parent,0 /* parentOffset */);if (_hidl_err != ::android::OK) { return _hidl_err; }atrace_begin(ATRACE_TAG_HAL, "HIDL::IServiceManager::get::server");...//3.根据hidl服务的fqName和name，从HwServiceManager的hidl service的map中拿到服务对象::android::sp<::android::hidl::base::V1_0::IBase> _hidl_out_service = static_cast<IServiceManager*>(_hidl_this->getImpl().get())->get(*fqName, *name);//4.把reply信息写入Parcel::android::hardware::writeToParcel(::android::hardware::Status::ok(), _hidl_reply);if (_hidl_out_service == nullptr) {_hidl_err = _hidl_reply->writeStrongBinder(nullptr);} else {//5.把获取的hidl服务转成IBinder对象::android::sp<::android::hardware::IBinder> _hidl_binder = ::android::hardware::getOrCreateCachedBinder(_hidl_out_service.get());if (_hidl_binder.get() != nullptr) {//6.把转换后的IBinder对象，写入reply的Parcel数据中_hidl_err = _hidl_reply->writeStrongBinder(_hidl_binder);} else {_hidl_err = ::android::UNKNOWN_ERROR;}}/* _hidl_err ignored! */atrace_end(ATRACE_TAG_HAL);..//7.通过回调，把reply的Parcel数据给发给client_hidl_cb(*_hidl_reply);return _hidl_err;
}

_hidl_get流程如下：

1.获取hidl服务的fqName

2.获取hidl服务的name

3.根据hidl服务的fqName和name，从HwServiceManager的hidl service的map中拿到服务对象

4.把reply信息写入Parcel

5.把获取的hidl服务转成IBinder对象

6.把转换后的IBinder对象，写入reply的Parcel数据中

7.通过回调，把reply的Parcel数据给发给client

5.7.1 ServiceManager::get()


[/system/hwservicemanager/ServiceManager.cpp]
Return<sp<IBase>> ServiceManager::get(const hidl_string& hidlFqName,const hidl_string& hidlName) {const std::string fqName = hidlFqName;const std::string name = hidlName;if (!mAcl.canGet(fqName, getBinderCallingContext())) {return nullptr;}//1.根据fqName和name找到对应的hidlServiceHidlService* hidlService = lookup(fqName, name);if (hidlService == nullptr) {tryStartService(fqName, name);return nullptr;}//2.根据hidlService 拿到IBase的对象sp<IBase> service = hidlService->getService();if (service == nullptr) {tryStartService(fqName, name);return nullptr;}hidlService->guaranteeClient();hardware::addPostCommandTask([hidlService] {hidlService->handleClientCallbacks(false /* isCalledOnInterval */);});return service;
}

5.7.2 ServiceManager::lookup()

主要是根据fqName和name从 HwServiceManager的服务map：mServiceMap 中找到对应的hidlservice

[/system/hwservicemanager/ServiceManager.cpp]
HidlService* ServiceManager::lookup(const std::string& fqName, const std::string& name) {//1.根据fqName从 mServiceMap 中 找到一个节点auto ifaceIt = mServiceMap.find(fqName);if (ifaceIt == mServiceMap.end()) {return nullptr;}//2.从找到的map节点中，拿到PackageInterfaceMap的内容PackageInterfaceMap &ifaceMap = ifaceIt->second;//3.从PackageInterfaceMap中根据name找到hidlServiceHidlService *hidlService = ifaceMap.lookup(name);return hidlService;
}

5.7.3 HidlService::getService()

返回hidlservice的mService成员

[/system/hwservicemanager/HidlService.cpp]
sp<IBase> HidlService::getService() const {return mService;
}

HwServiceManager中hidl服务的管理map：

5.8 toBinder()

toBinder接口将IBase对象转换为binder对象，其实就是从BpHwBase中拿到其成员变量mRemote中的BpHwBinder对象

[/system/libhidl/transport/include/hidl/HidlBinderSupport.h]
sp<IBinder> toBinder(sp<IType> iface) {IType *ifacePtr = iface.get();return getOrCreateCachedBinder(ifacePtr);
}sp<IBinder> getOrCreateCachedBinder(::android::hidl::base::V1_0::IBase* ifacePtr) {if (ifacePtr == nullptr) {return nullptr;}if (ifacePtr->isRemote()) {using ::android::hidl::base::V1_0::BpHwBase;//从BpHwBase中拿到其成员变量mRemote中的BpHwBinder对象BpHwBase* bpBase = static_cast<BpHwBase*>(ifacePtr);BpHwRefBase* bpRefBase = static_cast<BpHwRefBase*>(bpBase);return sp<IBinder>(bpRefBase->remote());}std::string descriptor = details::getDescriptor(ifacePtr);if (descriptor.empty()) {// interfaceDescriptor failsreturn nullptr;}// for get + setstd::unique_lock<std::mutex> _lock = details::gBnMap->lock();wp<BHwBinder> wBnObj = details::gBnMap->getLocked(ifacePtr, nullptr);sp<IBinder> sBnObj = wBnObj.promote();if (sBnObj == nullptr) {auto func = details::getBnConstructorMap().get(descriptor, nullptr);if (!func) {// TODO(b/69122224): remove this static variable when prebuilts updatedfunc = details::gBnConstructorMap->get(descriptor, nullptr);}LOG_ALWAYS_FATAL_IF(func == nullptr, "%s gBnConstructorMap returned null for %s", __func__,descriptor.c_str());sBnObj = sp<IBinder>(func(static_cast<void*>(ifacePtr)));LOG_ALWAYS_FATAL_IF(sBnObj == nullptr, "%s Bn constructor function returned null for %s",__func__, descriptor.c_str());details::gBnMap->setLocked(ifacePtr, static_cast<BHwBinder*>(sBnObj.get()));}return sBnObj;
}

5.9 JHwRemoteBinder::NewObject()

在JNI层将调用JHwRemoteBinder::NewObject()函数来创建一个Java层HwRemoteBinder对象，转换hidlservice，使之成为一个Java层HwRemoteBinder对象

[/frameworks/base/core/jni/android_os_HwRemoteBinder.cpp]
jobject JHwRemoteBinder::NewObject(JNIEnv *env, const sp<hardware::IBinder> &binder) {ScopedLocalRef<jclass> clazz(env, FindClassOrDie(env, CLASS_PATH));// XXX Have to look up the constructor here because otherwise that static// class initializer isn't called and gProxyOffsets.constructID is undefined :(jmethodID constructID = GetMethodIDOrDie(env, clazz.get(), "<init>", "()V");jobject obj = env->NewObject(clazz.get(), constructID);JHwRemoteBinder::GetNativeContext(env, obj)->setBinder(binder);return obj;
}

5.10 asInterface(android.os.IHwBinder binder)

通过服务查询得到HwRemoteBinder对象，这个只是传输层面的对象而已，需要转换为业务层面的对象，这个是由IXXX.asInterface函数完成

[out/soong/.intermediates/vendor/ingres/interfaces/demo/1.0/vendor.ingres.demo-V1.0-java_gen_java/gen/srcs/vendor/ingres/demo/V1_0/IDemo.java]/* package private */ static IDemo asInterface(android.os.IHwBinder binder) {if (binder == null) {return null;}android.os.IHwInterface iface =binder.queryLocalInterface(kInterfaceName);if ((iface != null) && (iface instanceof IDemo)) {return (IDemo)iface;}IDemo proxy = new IDemo.Proxy(binder);try {for (String descriptor : proxy.interfaceChain()) {if (descriptor.equals(kInterfaceName)) {return proxy;}}} catch (android.os.RemoteException e) {}return null;}

6. Client-Server接口调用

JAVA层 Client和Server的对象转换如下图所示：

在[4] 和[5]节中，我们知道了服务注册registerService()和获取服务getService()的流程，接下来我们再看一看接口调用是如何进行的。

上面调用的流程，其实和registerService()、getService()类似，都是组装Parcel数据，准备服务端的code，调用HwBinderProxy.transact()发送到服务端。

但是和服务注册不同的是，在服务注册中，Native的HwServiceManager是Server端，服务实体是Client端。接口调用时，服务实体是Server端。

服务端接收到CLient的请求后，根据下图的流程，最终流转到服务实体的onTransact()中，对解析出来的Parcel数据进行处理。

7.代码路径

/system/libhwbinder/BpHwBinder.cpp
/system/libhwbinder/IPCThreadState.cpp
/system/hwservicemanager/HidlService.cpp
/system/hwservicemanager/ServiceManager.cpp
/system/libhidl/transport/ServiceManagement.cpp
/system/libhidl/transport/include/hidl/HidlBinderSupport.h
/frameworks/base/core/jni/android_os_HwBinder.cpp
/frameworks/base/core/java/android/os/HwBinder.java
/frameworks/base/core/jni/android_os_HwRemoteBinder.cpp
/vendor/ingres/hal_demo/java/src/com/android/demo/Server.java
/out/soong/.intermediates/vendor/ingres/interfaces/demo/1.0/vendor.ingres.demo-V1.0-java_gen_java/gen/srcs/vendor/ingres/demo/V1_0/IDemo.java
/out/soong/.intermediates/system/libhidl/transport/base/1.0/android.hidl.base@1.0_genc++/gen/android/hidl/base/1.0/BaseAll.cpp
/out/soong/.intermediates/system/libhidl/transport/manager/1.2/android.hidl.manager@1.2_genc++/gen/android/hidl/manager/1.2/ServiceManagerAll.cpp

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