| /* |
| * Copyright (C) 2006 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define LOG_TAG "JavaBinder" |
| //#define LOG_NDEBUG 0 |
| |
| #include "android_os_Parcel.h" |
| #include "android_util_Binder.h" |
| |
| #include <nativehelper/JNIHelp.h> |
| |
| #include <fcntl.h> |
| #include <inttypes.h> |
| #include <stdio.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| |
| #include <android-base/stringprintf.h> |
| #include <binder/IInterface.h> |
| #include <binder/IServiceManager.h> |
| #include <binder/IPCThreadState.h> |
| #include <binder/Parcel.h> |
| #include <binder/ProcessState.h> |
| #include <log/log.h> |
| #include <utils/Atomic.h> |
| #include <utils/KeyedVector.h> |
| #include <utils/List.h> |
| #include <utils/Log.h> |
| #include <utils/String8.h> |
| #include <utils/SystemClock.h> |
| #include <utils/threads.h> |
| |
| #include <nativehelper/ScopedUtfChars.h> |
| #include <nativehelper/ScopedLocalRef.h> |
| |
| #include "core_jni_helpers.h" |
| |
| //#undef ALOGV |
| //#define ALOGV(...) fprintf(stderr, __VA_ARGS__) |
| |
| #define DEBUG_DEATH 0 |
| #if DEBUG_DEATH |
| #define LOGDEATH ALOGD |
| #else |
| #define LOGDEATH ALOGV |
| #endif |
| |
| using namespace android; |
| |
| // ---------------------------------------------------------------------------- |
| |
| static struct bindernative_offsets_t |
| { |
| // Class state. |
| jclass mClass; |
| jmethodID mExecTransact; |
| |
| // Object state. |
| jfieldID mObject; |
| |
| } gBinderOffsets; |
| |
| // ---------------------------------------------------------------------------- |
| |
| static struct binderinternal_offsets_t |
| { |
| // Class state. |
| jclass mClass; |
| jmethodID mForceGc; |
| |
| } gBinderInternalOffsets; |
| |
| // ---------------------------------------------------------------------------- |
| |
| static struct error_offsets_t |
| { |
| jclass mClass; |
| } gErrorOffsets; |
| |
| // ---------------------------------------------------------------------------- |
| |
| static struct binderproxy_offsets_t |
| { |
| // Class state. |
| jclass mClass; |
| jmethodID mConstructor; |
| jmethodID mSendDeathNotice; |
| |
| // Object state. |
| jfieldID mObject; |
| jfieldID mSelf; |
| jfieldID mOrgue; |
| |
| } gBinderProxyOffsets; |
| |
| static struct class_offsets_t |
| { |
| jmethodID mGetName; |
| } gClassOffsets; |
| |
| // ---------------------------------------------------------------------------- |
| |
| static struct log_offsets_t |
| { |
| // Class state. |
| jclass mClass; |
| jmethodID mLogE; |
| } gLogOffsets; |
| |
| static struct parcel_file_descriptor_offsets_t |
| { |
| jclass mClass; |
| jmethodID mConstructor; |
| } gParcelFileDescriptorOffsets; |
| |
| static struct strict_mode_callback_offsets_t |
| { |
| jclass mClass; |
| jmethodID mCallback; |
| } gStrictModeCallbackOffsets; |
| |
| static struct thread_dispatch_offsets_t |
| { |
| // Class state. |
| jclass mClass; |
| jmethodID mDispatchUncaughtException; |
| jmethodID mCurrentThread; |
| } gThreadDispatchOffsets; |
| |
| // **************************************************************************** |
| // **************************************************************************** |
| // **************************************************************************** |
| |
| static volatile int32_t gNumRefsCreated = 0; |
| static volatile int32_t gNumProxyRefs = 0; |
| static volatile int32_t gNumLocalRefs = 0; |
| static volatile int32_t gNumDeathRefs = 0; |
| |
| static void incRefsCreated(JNIEnv* env) |
| { |
| int old = android_atomic_inc(&gNumRefsCreated); |
| if (old == 200) { |
| android_atomic_and(0, &gNumRefsCreated); |
| env->CallStaticVoidMethod(gBinderInternalOffsets.mClass, |
| gBinderInternalOffsets.mForceGc); |
| } else { |
| ALOGV("Now have %d binder ops", old); |
| } |
| } |
| |
| static JavaVM* jnienv_to_javavm(JNIEnv* env) |
| { |
| JavaVM* vm; |
| return env->GetJavaVM(&vm) >= 0 ? vm : NULL; |
| } |
| |
| static JNIEnv* javavm_to_jnienv(JavaVM* vm) |
| { |
| JNIEnv* env; |
| return vm->GetEnv((void **)&env, JNI_VERSION_1_4) >= 0 ? env : NULL; |
| } |
| |
| // Report a java.lang.Error (or subclass). This may terminate the runtime. |
| static void report_java_lang_error(JNIEnv* env, jthrowable error) |
| { |
| // Try to run the uncaught exception machinery. |
| jobject thread = env->CallStaticObjectMethod(gThreadDispatchOffsets.mClass, |
| gThreadDispatchOffsets.mCurrentThread); |
| if (thread != nullptr) { |
| env->CallVoidMethod(thread, gThreadDispatchOffsets.mDispatchUncaughtException, |
| error); |
| // Should not return here, unless more errors occured. |
| } |
| // Some error occurred that meant that either dispatchUncaughtException could not be |
| // called or that it had an error itself (as this should be unreachable under normal |
| // conditions). Clear the exception. |
| env->ExceptionClear(); |
| } |
| |
| static void report_exception(JNIEnv* env, jthrowable excep, const char* msg) |
| { |
| env->ExceptionClear(); |
| |
| jstring tagstr = env->NewStringUTF(LOG_TAG); |
| jstring msgstr = NULL; |
| if (tagstr != NULL) { |
| msgstr = env->NewStringUTF(msg); |
| } |
| |
| if ((tagstr == NULL) || (msgstr == NULL)) { |
| env->ExceptionClear(); /* assume exception (OOM?) was thrown */ |
| ALOGE("Unable to call Log.e()\n"); |
| ALOGE("%s", msg); |
| goto bail; |
| } |
| |
| env->CallStaticIntMethod( |
| gLogOffsets.mClass, gLogOffsets.mLogE, tagstr, msgstr, excep); |
| if (env->ExceptionCheck()) { |
| /* attempting to log the failure has failed */ |
| ALOGW("Failed trying to log exception, msg='%s'\n", msg); |
| env->ExceptionClear(); |
| } |
| |
| if (env->IsInstanceOf(excep, gErrorOffsets.mClass)) { |
| // Try to report the error. This should not return under normal circumstances. |
| report_java_lang_error(env, excep); |
| // The traditional handling: re-raise and abort. |
| |
| /* |
| * It's an Error: Reraise the exception and ask the runtime to abort. |
| */ |
| |
| // Try to get the exception string. Sometimes logcat isn't available, |
| // so try to add it to the abort message. |
| std::string exc_msg = "(Unknown exception message)"; |
| { |
| ScopedLocalRef<jclass> exc_class(env, env->GetObjectClass(excep)); |
| jmethodID method_id = env->GetMethodID(exc_class.get(), |
| "toString", |
| "()Ljava/lang/String;"); |
| ScopedLocalRef<jstring> jstr( |
| env, |
| reinterpret_cast<jstring>( |
| env->CallObjectMethod(excep, method_id))); |
| env->ExceptionClear(); // Just for good measure. |
| if (jstr.get() != nullptr) { |
| ScopedUtfChars jstr_utf(env, jstr.get()); |
| exc_msg = jstr_utf.c_str(); |
| } |
| } |
| |
| env->Throw(excep); |
| ALOGE("java.lang.Error thrown during binder transaction (stack trace follows) : "); |
| env->ExceptionDescribe(); |
| |
| std::string error_msg = base::StringPrintf( |
| "java.lang.Error thrown during binder transaction: %s", |
| exc_msg.c_str()); |
| env->FatalError(error_msg.c_str()); |
| } |
| |
| bail: |
| /* discard local refs created for us by VM */ |
| env->DeleteLocalRef(tagstr); |
| env->DeleteLocalRef(msgstr); |
| } |
| |
| class JavaBBinderHolder; |
| |
| class JavaBBinder : public BBinder |
| { |
| public: |
| JavaBBinder(JNIEnv* env, jobject object) |
| : mVM(jnienv_to_javavm(env)), mObject(env->NewGlobalRef(object)) |
| { |
| ALOGV("Creating JavaBBinder %p\n", this); |
| android_atomic_inc(&gNumLocalRefs); |
| incRefsCreated(env); |
| } |
| |
| bool checkSubclass(const void* subclassID) const |
| { |
| return subclassID == &gBinderOffsets; |
| } |
| |
| jobject object() const |
| { |
| return mObject; |
| } |
| |
| protected: |
| virtual ~JavaBBinder() |
| { |
| ALOGV("Destroying JavaBBinder %p\n", this); |
| android_atomic_dec(&gNumLocalRefs); |
| JNIEnv* env = javavm_to_jnienv(mVM); |
| env->DeleteGlobalRef(mObject); |
| } |
| |
| virtual status_t onTransact( |
| uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags = 0) |
| { |
| JNIEnv* env = javavm_to_jnienv(mVM); |
| |
| ALOGV("onTransact() on %p calling object %p in env %p vm %p\n", this, mObject, env, mVM); |
| |
| IPCThreadState* thread_state = IPCThreadState::self(); |
| const int32_t strict_policy_before = thread_state->getStrictModePolicy(); |
| |
| //printf("Transact from %p to Java code sending: ", this); |
| //data.print(); |
| //printf("\n"); |
| jboolean res = env->CallBooleanMethod(mObject, gBinderOffsets.mExecTransact, |
| code, reinterpret_cast<jlong>(&data), reinterpret_cast<jlong>(reply), flags); |
| |
| if (env->ExceptionCheck()) { |
| jthrowable excep = env->ExceptionOccurred(); |
| report_exception(env, excep, |
| "*** Uncaught remote exception! " |
| "(Exceptions are not yet supported across processes.)"); |
| res = JNI_FALSE; |
| |
| /* clean up JNI local ref -- we don't return to Java code */ |
| env->DeleteLocalRef(excep); |
| } |
| |
| // Check if the strict mode state changed while processing the |
| // call. The Binder state will be restored by the underlying |
| // Binder system in IPCThreadState, however we need to take care |
| // of the parallel Java state as well. |
| if (thread_state->getStrictModePolicy() != strict_policy_before) { |
| set_dalvik_blockguard_policy(env, strict_policy_before); |
| } |
| |
| if (env->ExceptionCheck()) { |
| jthrowable excep = env->ExceptionOccurred(); |
| report_exception(env, excep, |
| "*** Uncaught exception in onBinderStrictModePolicyChange"); |
| /* clean up JNI local ref -- we don't return to Java code */ |
| env->DeleteLocalRef(excep); |
| } |
| |
| // Need to always call through the native implementation of |
| // SYSPROPS_TRANSACTION. |
| if (code == SYSPROPS_TRANSACTION) { |
| BBinder::onTransact(code, data, reply, flags); |
| } |
| |
| //aout << "onTransact to Java code; result=" << res << endl |
| // << "Transact from " << this << " to Java code returning " |
| // << reply << ": " << *reply << endl; |
| return res != JNI_FALSE ? NO_ERROR : UNKNOWN_TRANSACTION; |
| } |
| |
| virtual status_t dump(int fd, const Vector<String16>& args) |
| { |
| return 0; |
| } |
| |
| private: |
| JavaVM* const mVM; |
| jobject const mObject; |
| }; |
| |
| // ---------------------------------------------------------------------------- |
| |
| class JavaBBinderHolder : public RefBase |
| { |
| public: |
| sp<JavaBBinder> get(JNIEnv* env, jobject obj) |
| { |
| AutoMutex _l(mLock); |
| sp<JavaBBinder> b = mBinder.promote(); |
| if (b == NULL) { |
| b = new JavaBBinder(env, obj); |
| mBinder = b; |
| ALOGV("Creating JavaBinder %p (refs %p) for Object %p, weakCount=%" PRId32 "\n", |
| b.get(), b->getWeakRefs(), obj, b->getWeakRefs()->getWeakCount()); |
| } |
| |
| return b; |
| } |
| |
| sp<JavaBBinder> getExisting() |
| { |
| AutoMutex _l(mLock); |
| return mBinder.promote(); |
| } |
| |
| private: |
| Mutex mLock; |
| wp<JavaBBinder> mBinder; |
| }; |
| |
| // ---------------------------------------------------------------------------- |
| |
| // Per-IBinder death recipient bookkeeping. This is how we reconcile local jobject |
| // death recipient references passed in through JNI with the permanent corresponding |
| // JavaDeathRecipient objects. |
| |
| class JavaDeathRecipient; |
| |
| class DeathRecipientList : public RefBase { |
| List< sp<JavaDeathRecipient> > mList; |
| Mutex mLock; |
| |
| public: |
| DeathRecipientList(); |
| ~DeathRecipientList(); |
| |
| void add(const sp<JavaDeathRecipient>& recipient); |
| void remove(const sp<JavaDeathRecipient>& recipient); |
| sp<JavaDeathRecipient> find(jobject recipient); |
| |
| Mutex& lock(); // Use with care; specifically for mutual exclusion during binder death |
| }; |
| |
| // ---------------------------------------------------------------------------- |
| |
| class JavaDeathRecipient : public IBinder::DeathRecipient |
| { |
| public: |
| JavaDeathRecipient(JNIEnv* env, jobject object, const sp<DeathRecipientList>& list) |
| : mVM(jnienv_to_javavm(env)), mObject(env->NewGlobalRef(object)), |
| mObjectWeak(NULL), mList(list) |
| { |
| // These objects manage their own lifetimes so are responsible for final bookkeeping. |
| // The list holds a strong reference to this object. |
| LOGDEATH("Adding JDR %p to DRL %p", this, list.get()); |
| list->add(this); |
| |
| android_atomic_inc(&gNumDeathRefs); |
| incRefsCreated(env); |
| } |
| |
| void binderDied(const wp<IBinder>& who) |
| { |
| LOGDEATH("Receiving binderDied() on JavaDeathRecipient %p\n", this); |
| if (mObject != NULL) { |
| JNIEnv* env = javavm_to_jnienv(mVM); |
| |
| env->CallStaticVoidMethod(gBinderProxyOffsets.mClass, |
| gBinderProxyOffsets.mSendDeathNotice, mObject); |
| if (env->ExceptionCheck()) { |
| jthrowable excep = env->ExceptionOccurred(); |
| report_exception(env, excep, |
| "*** Uncaught exception returned from death notification!"); |
| } |
| |
| // Serialize with our containing DeathRecipientList so that we can't |
| // delete the global ref on mObject while the list is being iterated. |
| sp<DeathRecipientList> list = mList.promote(); |
| if (list != NULL) { |
| AutoMutex _l(list->lock()); |
| |
| // Demote from strong ref to weak after binderDied() has been delivered, |
| // to allow the DeathRecipient and BinderProxy to be GC'd if no longer needed. |
| mObjectWeak = env->NewWeakGlobalRef(mObject); |
| env->DeleteGlobalRef(mObject); |
| mObject = NULL; |
| } |
| } |
| } |
| |
| void clearReference() |
| { |
| sp<DeathRecipientList> list = mList.promote(); |
| if (list != NULL) { |
| LOGDEATH("Removing JDR %p from DRL %p", this, list.get()); |
| list->remove(this); |
| } else { |
| LOGDEATH("clearReference() on JDR %p but DRL wp purged", this); |
| } |
| } |
| |
| bool matches(jobject obj) { |
| bool result; |
| JNIEnv* env = javavm_to_jnienv(mVM); |
| |
| if (mObject != NULL) { |
| result = env->IsSameObject(obj, mObject); |
| } else { |
| jobject me = env->NewLocalRef(mObjectWeak); |
| result = env->IsSameObject(obj, me); |
| env->DeleteLocalRef(me); |
| } |
| return result; |
| } |
| |
| void warnIfStillLive() { |
| if (mObject != NULL) { |
| // Okay, something is wrong -- we have a hard reference to a live death |
| // recipient on the VM side, but the list is being torn down. |
| JNIEnv* env = javavm_to_jnienv(mVM); |
| ScopedLocalRef<jclass> objClassRef(env, env->GetObjectClass(mObject)); |
| ScopedLocalRef<jstring> nameRef(env, |
| (jstring) env->CallObjectMethod(objClassRef.get(), gClassOffsets.mGetName)); |
| ScopedUtfChars nameUtf(env, nameRef.get()); |
| if (nameUtf.c_str() != NULL) { |
| ALOGW("BinderProxy is being destroyed but the application did not call " |
| "unlinkToDeath to unlink all of its death recipients beforehand. " |
| "Releasing leaked death recipient: %s", nameUtf.c_str()); |
| } else { |
| ALOGW("BinderProxy being destroyed; unable to get DR object name"); |
| env->ExceptionClear(); |
| } |
| } |
| } |
| |
| protected: |
| virtual ~JavaDeathRecipient() |
| { |
| //ALOGI("Removing death ref: recipient=%p\n", mObject); |
| android_atomic_dec(&gNumDeathRefs); |
| JNIEnv* env = javavm_to_jnienv(mVM); |
| if (mObject != NULL) { |
| env->DeleteGlobalRef(mObject); |
| } else { |
| env->DeleteWeakGlobalRef(mObjectWeak); |
| } |
| } |
| |
| private: |
| JavaVM* const mVM; |
| jobject mObject; |
| jweak mObjectWeak; // will be a weak ref to the same VM-side DeathRecipient after binderDied() |
| wp<DeathRecipientList> mList; |
| }; |
| |
| // ---------------------------------------------------------------------------- |
| |
| DeathRecipientList::DeathRecipientList() { |
| LOGDEATH("New DRL @ %p", this); |
| } |
| |
| DeathRecipientList::~DeathRecipientList() { |
| LOGDEATH("Destroy DRL @ %p", this); |
| AutoMutex _l(mLock); |
| |
| // Should never happen -- the JavaDeathRecipient objects that have added themselves |
| // to the list are holding references on the list object. Only when they are torn |
| // down can the list header be destroyed. |
| if (mList.size() > 0) { |
| List< sp<JavaDeathRecipient> >::iterator iter; |
| for (iter = mList.begin(); iter != mList.end(); iter++) { |
| (*iter)->warnIfStillLive(); |
| } |
| } |
| } |
| |
| void DeathRecipientList::add(const sp<JavaDeathRecipient>& recipient) { |
| AutoMutex _l(mLock); |
| |
| LOGDEATH("DRL @ %p : add JDR %p", this, recipient.get()); |
| mList.push_back(recipient); |
| } |
| |
| void DeathRecipientList::remove(const sp<JavaDeathRecipient>& recipient) { |
| AutoMutex _l(mLock); |
| |
| List< sp<JavaDeathRecipient> >::iterator iter; |
| for (iter = mList.begin(); iter != mList.end(); iter++) { |
| if (*iter == recipient) { |
| LOGDEATH("DRL @ %p : remove JDR %p", this, recipient.get()); |
| mList.erase(iter); |
| return; |
| } |
| } |
| } |
| |
| sp<JavaDeathRecipient> DeathRecipientList::find(jobject recipient) { |
| AutoMutex _l(mLock); |
| |
| List< sp<JavaDeathRecipient> >::iterator iter; |
| for (iter = mList.begin(); iter != mList.end(); iter++) { |
| if ((*iter)->matches(recipient)) { |
| return *iter; |
| } |
| } |
| return NULL; |
| } |
| |
| Mutex& DeathRecipientList::lock() { |
| return mLock; |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| namespace android { |
| |
| static void proxy_cleanup(const void* id, void* obj, void* cleanupCookie) |
| { |
| android_atomic_dec(&gNumProxyRefs); |
| JNIEnv* env = javavm_to_jnienv((JavaVM*)cleanupCookie); |
| env->DeleteGlobalRef((jobject)obj); |
| } |
| |
| static Mutex mProxyLock; |
| |
| jobject javaObjectForIBinder(JNIEnv* env, const sp<IBinder>& val) |
| { |
| if (val == NULL) return NULL; |
| |
| if (val->checkSubclass(&gBinderOffsets)) { |
| // One of our own! |
| jobject object = static_cast<JavaBBinder*>(val.get())->object(); |
| LOGDEATH("objectForBinder %p: it's our own %p!\n", val.get(), object); |
| return object; |
| } |
| |
| // For the rest of the function we will hold this lock, to serialize |
| // looking/creation/destruction of Java proxies for native Binder proxies. |
| AutoMutex _l(mProxyLock); |
| |
| // Someone else's... do we know about it? |
| jobject object = (jobject)val->findObject(&gBinderProxyOffsets); |
| if (object != NULL) { |
| jobject res = jniGetReferent(env, object); |
| if (res != NULL) { |
| ALOGV("objectForBinder %p: found existing %p!\n", val.get(), res); |
| return res; |
| } |
| LOGDEATH("Proxy object %p of IBinder %p no longer in working set!!!", object, val.get()); |
| android_atomic_dec(&gNumProxyRefs); |
| val->detachObject(&gBinderProxyOffsets); |
| env->DeleteGlobalRef(object); |
| } |
| |
| object = env->NewObject(gBinderProxyOffsets.mClass, gBinderProxyOffsets.mConstructor); |
| if (object != NULL) { |
| LOGDEATH("objectForBinder %p: created new proxy %p !\n", val.get(), object); |
| // The proxy holds a reference to the native object. |
| env->SetLongField(object, gBinderProxyOffsets.mObject, (jlong)val.get()); |
| val->incStrong((void*)javaObjectForIBinder); |
| |
| // The native object needs to hold a weak reference back to the |
| // proxy, so we can retrieve the same proxy if it is still active. |
| jobject refObject = env->NewGlobalRef( |
| env->GetObjectField(object, gBinderProxyOffsets.mSelf)); |
| val->attachObject(&gBinderProxyOffsets, refObject, |
| jnienv_to_javavm(env), proxy_cleanup); |
| |
| // Also remember the death recipients registered on this proxy |
| sp<DeathRecipientList> drl = new DeathRecipientList; |
| drl->incStrong((void*)javaObjectForIBinder); |
| env->SetLongField(object, gBinderProxyOffsets.mOrgue, reinterpret_cast<jlong>(drl.get())); |
| |
| // Note that a new object reference has been created. |
| android_atomic_inc(&gNumProxyRefs); |
| incRefsCreated(env); |
| } |
| |
| return object; |
| } |
| |
| sp<IBinder> ibinderForJavaObject(JNIEnv* env, jobject obj) |
| { |
| if (obj == NULL) return NULL; |
| |
| if (env->IsInstanceOf(obj, gBinderOffsets.mClass)) { |
| JavaBBinderHolder* jbh = (JavaBBinderHolder*) |
| env->GetLongField(obj, gBinderOffsets.mObject); |
| return jbh != NULL ? jbh->get(env, obj) : NULL; |
| } |
| |
| if (env->IsInstanceOf(obj, gBinderProxyOffsets.mClass)) { |
| return (IBinder*) |
| env->GetLongField(obj, gBinderProxyOffsets.mObject); |
| } |
| |
| ALOGW("ibinderForJavaObject: %p is not a Binder object", obj); |
| return NULL; |
| } |
| |
| jobject newParcelFileDescriptor(JNIEnv* env, jobject fileDesc) |
| { |
| return env->NewObject( |
| gParcelFileDescriptorOffsets.mClass, gParcelFileDescriptorOffsets.mConstructor, fileDesc); |
| } |
| |
| void set_dalvik_blockguard_policy(JNIEnv* env, jint strict_policy) |
| { |
| // Call back into android.os.StrictMode#onBinderStrictModePolicyChange |
| // to sync our state back to it. See the comments in StrictMode.java. |
| env->CallStaticVoidMethod(gStrictModeCallbackOffsets.mClass, |
| gStrictModeCallbackOffsets.mCallback, |
| strict_policy); |
| } |
| |
| void signalExceptionForError(JNIEnv* env, jobject obj, status_t err, |
| bool canThrowRemoteException, int parcelSize) |
| { |
| switch (err) { |
| case UNKNOWN_ERROR: |
| jniThrowException(env, "java/lang/RuntimeException", "Unknown error"); |
| break; |
| case NO_MEMORY: |
| jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| break; |
| case INVALID_OPERATION: |
| jniThrowException(env, "java/lang/UnsupportedOperationException", NULL); |
| break; |
| case BAD_VALUE: |
| jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| break; |
| case BAD_INDEX: |
| jniThrowException(env, "java/lang/IndexOutOfBoundsException", NULL); |
| break; |
| case BAD_TYPE: |
| jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| break; |
| case NAME_NOT_FOUND: |
| jniThrowException(env, "java/util/NoSuchElementException", NULL); |
| break; |
| case PERMISSION_DENIED: |
| jniThrowException(env, "java/lang/SecurityException", NULL); |
| break; |
| case NOT_ENOUGH_DATA: |
| jniThrowException(env, "android/os/ParcelFormatException", "Not enough data"); |
| break; |
| case NO_INIT: |
| jniThrowException(env, "java/lang/RuntimeException", "Not initialized"); |
| break; |
| case ALREADY_EXISTS: |
| jniThrowException(env, "java/lang/RuntimeException", "Item already exists"); |
| break; |
| case DEAD_OBJECT: |
| // DeadObjectException is a checked exception, only throw from certain methods. |
| jniThrowException(env, canThrowRemoteException |
| ? "android/os/DeadObjectException" |
| : "java/lang/RuntimeException", NULL); |
| break; |
| case UNKNOWN_TRANSACTION: |
| jniThrowException(env, "java/lang/RuntimeException", "Unknown transaction code"); |
| break; |
| case FAILED_TRANSACTION: { |
| ALOGE("!!! FAILED BINDER TRANSACTION !!! (parcel size = %d)", parcelSize); |
| const char* exceptionToThrow; |
| char msg[128]; |
| // TransactionTooLargeException is a checked exception, only throw from certain methods. |
| // FIXME: Transaction too large is the most common reason for FAILED_TRANSACTION |
| // but it is not the only one. The Binder driver can return BR_FAILED_REPLY |
| // for other reasons also, such as if the transaction is malformed or |
| // refers to an FD that has been closed. We should change the driver |
| // to enable us to distinguish these cases in the future. |
| if (canThrowRemoteException && parcelSize > 200*1024) { |
| // bona fide large payload |
| exceptionToThrow = "android/os/TransactionTooLargeException"; |
| snprintf(msg, sizeof(msg)-1, "data parcel size %d bytes", parcelSize); |
| } else { |
| // Heuristic: a payload smaller than this threshold "shouldn't" be too |
| // big, so it's probably some other, more subtle problem. In practice |
| // it seems to always mean that the remote process died while the binder |
| // transaction was already in flight. |
| exceptionToThrow = (canThrowRemoteException) |
| ? "android/os/DeadObjectException" |
| : "java/lang/RuntimeException"; |
| snprintf(msg, sizeof(msg)-1, |
| "Transaction failed on small parcel; remote process probably died"); |
| } |
| jniThrowException(env, exceptionToThrow, msg); |
| } break; |
| case FDS_NOT_ALLOWED: |
| jniThrowException(env, "java/lang/RuntimeException", |
| "Not allowed to write file descriptors here"); |
| break; |
| case UNEXPECTED_NULL: |
| jniThrowNullPointerException(env, NULL); |
| break; |
| case -EBADF: |
| jniThrowException(env, "java/lang/RuntimeException", |
| "Bad file descriptor"); |
| break; |
| case -ENFILE: |
| jniThrowException(env, "java/lang/RuntimeException", |
| "File table overflow"); |
| break; |
| case -EMFILE: |
| jniThrowException(env, "java/lang/RuntimeException", |
| "Too many open files"); |
| break; |
| case -EFBIG: |
| jniThrowException(env, "java/lang/RuntimeException", |
| "File too large"); |
| break; |
| case -ENOSPC: |
| jniThrowException(env, "java/lang/RuntimeException", |
| "No space left on device"); |
| break; |
| case -ESPIPE: |
| jniThrowException(env, "java/lang/RuntimeException", |
| "Illegal seek"); |
| break; |
| case -EROFS: |
| jniThrowException(env, "java/lang/RuntimeException", |
| "Read-only file system"); |
| break; |
| case -EMLINK: |
| jniThrowException(env, "java/lang/RuntimeException", |
| "Too many links"); |
| break; |
| default: |
| ALOGE("Unknown binder error code. 0x%" PRIx32, err); |
| String8 msg; |
| msg.appendFormat("Unknown binder error code. 0x%" PRIx32, err); |
| // RemoteException is a checked exception, only throw from certain methods. |
| jniThrowException(env, canThrowRemoteException |
| ? "android/os/RemoteException" : "java/lang/RuntimeException", msg.string()); |
| break; |
| } |
| } |
| |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| static jint android_os_Binder_getCallingPid(JNIEnv* env, jobject clazz) |
| { |
| return IPCThreadState::self()->getCallingPid(); |
| } |
| |
| static jint android_os_Binder_getCallingUid(JNIEnv* env, jobject clazz) |
| { |
| return IPCThreadState::self()->getCallingUid(); |
| } |
| |
| static jlong android_os_Binder_clearCallingIdentity(JNIEnv* env, jobject clazz) |
| { |
| return IPCThreadState::self()->clearCallingIdentity(); |
| } |
| |
| static void android_os_Binder_restoreCallingIdentity(JNIEnv* env, jobject clazz, jlong token) |
| { |
| // XXX temporary sanity check to debug crashes. |
| int uid = (int)(token>>32); |
| if (uid > 0 && uid < 999) { |
| // In Android currently there are no uids in this range. |
| char buf[128]; |
| sprintf(buf, "Restoring bad calling ident: 0x%" PRIx64, token); |
| jniThrowException(env, "java/lang/IllegalStateException", buf); |
| return; |
| } |
| IPCThreadState::self()->restoreCallingIdentity(token); |
| } |
| |
| static void android_os_Binder_setThreadStrictModePolicy(JNIEnv* env, jobject clazz, jint policyMask) |
| { |
| IPCThreadState::self()->setStrictModePolicy(policyMask); |
| } |
| |
| static jint android_os_Binder_getThreadStrictModePolicy(JNIEnv* env, jobject clazz) |
| { |
| return IPCThreadState::self()->getStrictModePolicy(); |
| } |
| |
| static void android_os_Binder_flushPendingCommands(JNIEnv* env, jobject clazz) |
| { |
| IPCThreadState::self()->flushCommands(); |
| } |
| |
| static void android_os_Binder_init(JNIEnv* env, jobject obj) |
| { |
| JavaBBinderHolder* jbh = new JavaBBinderHolder(); |
| if (jbh == NULL) { |
| jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| return; |
| } |
| ALOGV("Java Binder %p: acquiring first ref on holder %p", obj, jbh); |
| jbh->incStrong((void*)android_os_Binder_init); |
| env->SetLongField(obj, gBinderOffsets.mObject, (jlong)jbh); |
| } |
| |
| static void android_os_Binder_destroyBinder(JNIEnv* env, jobject obj) |
| { |
| JavaBBinderHolder* jbh = (JavaBBinderHolder*) |
| env->GetLongField(obj, gBinderOffsets.mObject); |
| if (jbh != NULL) { |
| env->SetLongField(obj, gBinderOffsets.mObject, 0); |
| ALOGV("Java Binder %p: removing ref on holder %p", obj, jbh); |
| jbh->decStrong((void*)android_os_Binder_init); |
| } else { |
| // Encountering an uninitialized binder is harmless. All it means is that |
| // the Binder was only partially initialized when its finalizer ran and called |
| // destroyBinder(). The Binder could be partially initialized for several reasons. |
| // For example, a Binder subclass constructor might have thrown an exception before |
| // it could delegate to its superclass's constructor. Consequently init() would |
| // not have been called and the holder pointer would remain NULL. |
| ALOGV("Java Binder %p: ignoring uninitialized binder", obj); |
| } |
| } |
| |
| static void android_os_Binder_blockUntilThreadAvailable(JNIEnv* env, jobject clazz) |
| { |
| return IPCThreadState::self()->blockUntilThreadAvailable(); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| static const JNINativeMethod gBinderMethods[] = { |
| /* name, signature, funcPtr */ |
| { "getCallingPid", "()I", (void*)android_os_Binder_getCallingPid }, |
| { "getCallingUid", "()I", (void*)android_os_Binder_getCallingUid }, |
| { "clearCallingIdentity", "()J", (void*)android_os_Binder_clearCallingIdentity }, |
| { "restoreCallingIdentity", "(J)V", (void*)android_os_Binder_restoreCallingIdentity }, |
| { "setThreadStrictModePolicy", "(I)V", (void*)android_os_Binder_setThreadStrictModePolicy }, |
| { "getThreadStrictModePolicy", "()I", (void*)android_os_Binder_getThreadStrictModePolicy }, |
| { "flushPendingCommands", "()V", (void*)android_os_Binder_flushPendingCommands }, |
| { "init", "()V", (void*)android_os_Binder_init }, |
| { "destroyBinder", "()V", (void*)android_os_Binder_destroyBinder }, |
| { "blockUntilThreadAvailable", "()V", (void*)android_os_Binder_blockUntilThreadAvailable } |
| }; |
| |
| const char* const kBinderPathName = "android/os/Binder"; |
| |
| static int int_register_android_os_Binder(JNIEnv* env) |
| { |
| jclass clazz = FindClassOrDie(env, kBinderPathName); |
| |
| gBinderOffsets.mClass = MakeGlobalRefOrDie(env, clazz); |
| gBinderOffsets.mExecTransact = GetMethodIDOrDie(env, clazz, "execTransact", "(IJJI)Z"); |
| gBinderOffsets.mObject = GetFieldIDOrDie(env, clazz, "mObject", "J"); |
| |
| return RegisterMethodsOrDie( |
| env, kBinderPathName, |
| gBinderMethods, NELEM(gBinderMethods)); |
| } |
| |
| // **************************************************************************** |
| // **************************************************************************** |
| // **************************************************************************** |
| |
| namespace android { |
| |
| jint android_os_Debug_getLocalObjectCount(JNIEnv* env, jobject clazz) |
| { |
| return gNumLocalRefs; |
| } |
| |
| jint android_os_Debug_getProxyObjectCount(JNIEnv* env, jobject clazz) |
| { |
| return gNumProxyRefs; |
| } |
| |
| jint android_os_Debug_getDeathObjectCount(JNIEnv* env, jobject clazz) |
| { |
| return gNumDeathRefs; |
| } |
| |
| } |
| |
| // **************************************************************************** |
| // **************************************************************************** |
| // **************************************************************************** |
| |
| static jobject android_os_BinderInternal_getContextObject(JNIEnv* env, jobject clazz) |
| { |
| sp<IBinder> b = ProcessState::self()->getContextObject(NULL); |
| return javaObjectForIBinder(env, b); |
| } |
| |
| static void android_os_BinderInternal_joinThreadPool(JNIEnv* env, jobject clazz) |
| { |
| sp<IBinder> b = ProcessState::self()->getContextObject(NULL); |
| android::IPCThreadState::self()->joinThreadPool(); |
| } |
| |
| static void android_os_BinderInternal_disableBackgroundScheduling(JNIEnv* env, |
| jobject clazz, jboolean disable) |
| { |
| IPCThreadState::disableBackgroundScheduling(disable ? true : false); |
| } |
| |
| static void android_os_BinderInternal_setMaxThreads(JNIEnv* env, |
| jobject clazz, jint maxThreads) |
| { |
| ProcessState::self()->setThreadPoolMaxThreadCount(maxThreads); |
| } |
| |
| static void android_os_BinderInternal_handleGc(JNIEnv* env, jobject clazz) |
| { |
| ALOGV("Gc has executed, clearing binder ops"); |
| android_atomic_and(0, &gNumRefsCreated); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| static const JNINativeMethod gBinderInternalMethods[] = { |
| /* name, signature, funcPtr */ |
| { "getContextObject", "()Landroid/os/IBinder;", (void*)android_os_BinderInternal_getContextObject }, |
| { "joinThreadPool", "()V", (void*)android_os_BinderInternal_joinThreadPool }, |
| { "disableBackgroundScheduling", "(Z)V", (void*)android_os_BinderInternal_disableBackgroundScheduling }, |
| { "setMaxThreads", "(I)V", (void*)android_os_BinderInternal_setMaxThreads }, |
| { "handleGc", "()V", (void*)android_os_BinderInternal_handleGc } |
| }; |
| |
| const char* const kBinderInternalPathName = "com/android/internal/os/BinderInternal"; |
| |
| static int int_register_android_os_BinderInternal(JNIEnv* env) |
| { |
| jclass clazz = FindClassOrDie(env, kBinderInternalPathName); |
| |
| gBinderInternalOffsets.mClass = MakeGlobalRefOrDie(env, clazz); |
| gBinderInternalOffsets.mForceGc = GetStaticMethodIDOrDie(env, clazz, "forceBinderGc", "()V"); |
| |
| return RegisterMethodsOrDie( |
| env, kBinderInternalPathName, |
| gBinderInternalMethods, NELEM(gBinderInternalMethods)); |
| } |
| |
| // **************************************************************************** |
| // **************************************************************************** |
| // **************************************************************************** |
| |
| static jboolean android_os_BinderProxy_pingBinder(JNIEnv* env, jobject obj) |
| { |
| IBinder* target = (IBinder*) |
| env->GetLongField(obj, gBinderProxyOffsets.mObject); |
| if (target == NULL) { |
| return JNI_FALSE; |
| } |
| status_t err = target->pingBinder(); |
| return err == NO_ERROR ? JNI_TRUE : JNI_FALSE; |
| } |
| |
| static jstring android_os_BinderProxy_getInterfaceDescriptor(JNIEnv* env, jobject obj) |
| { |
| IBinder* target = (IBinder*) env->GetLongField(obj, gBinderProxyOffsets.mObject); |
| if (target != NULL) { |
| const String16& desc = target->getInterfaceDescriptor(); |
| return env->NewString(reinterpret_cast<const jchar*>(desc.string()), |
| desc.size()); |
| } |
| jniThrowException(env, "java/lang/RuntimeException", |
| "No binder found for object"); |
| return NULL; |
| } |
| |
| static jboolean android_os_BinderProxy_isBinderAlive(JNIEnv* env, jobject obj) |
| { |
| IBinder* target = (IBinder*) |
| env->GetLongField(obj, gBinderProxyOffsets.mObject); |
| if (target == NULL) { |
| return JNI_FALSE; |
| } |
| bool alive = target->isBinderAlive(); |
| return alive ? JNI_TRUE : JNI_FALSE; |
| } |
| |
| static int getprocname(pid_t pid, char *buf, size_t len) { |
| char filename[32]; |
| FILE *f; |
| |
| snprintf(filename, sizeof(filename), "/proc/%d/cmdline", pid); |
| f = fopen(filename, "r"); |
| if (!f) { |
| *buf = '\0'; |
| return 1; |
| } |
| if (!fgets(buf, len, f)) { |
| *buf = '\0'; |
| fclose(f); |
| return 2; |
| } |
| fclose(f); |
| return 0; |
| } |
| |
| static bool push_eventlog_string(char** pos, const char* end, const char* str) { |
| jint len = strlen(str); |
| int space_needed = 1 + sizeof(len) + len; |
| if (end - *pos < space_needed) { |
| ALOGW("not enough space for string. remain=%" PRIdPTR "; needed=%d", |
| end - *pos, space_needed); |
| return false; |
| } |
| **pos = EVENT_TYPE_STRING; |
| (*pos)++; |
| memcpy(*pos, &len, sizeof(len)); |
| *pos += sizeof(len); |
| memcpy(*pos, str, len); |
| *pos += len; |
| return true; |
| } |
| |
| static bool push_eventlog_int(char** pos, const char* end, jint val) { |
| int space_needed = 1 + sizeof(val); |
| if (end - *pos < space_needed) { |
| ALOGW("not enough space for int. remain=%" PRIdPTR "; needed=%d", |
| end - *pos, space_needed); |
| return false; |
| } |
| **pos = EVENT_TYPE_INT; |
| (*pos)++; |
| memcpy(*pos, &val, sizeof(val)); |
| *pos += sizeof(val); |
| return true; |
| } |
| |
| // From frameworks/base/core/java/android/content/EventLogTags.logtags: |
| |
| static const bool kEnableBinderSample = false; |
| |
| #define LOGTAG_BINDER_OPERATION 52004 |
| |
| static void conditionally_log_binder_call(int64_t start_millis, |
| IBinder* target, jint code) { |
| int duration_ms = static_cast<int>(uptimeMillis() - start_millis); |
| |
| int sample_percent; |
| if (duration_ms >= 500) { |
| sample_percent = 100; |
| } else { |
| sample_percent = 100 * duration_ms / 500; |
| if (sample_percent == 0) { |
| return; |
| } |
| if (sample_percent < (random() % 100 + 1)) { |
| return; |
| } |
| } |
| |
| char process_name[40]; |
| getprocname(getpid(), process_name, sizeof(process_name)); |
| String8 desc(target->getInterfaceDescriptor()); |
| |
| char buf[LOGGER_ENTRY_MAX_PAYLOAD]; |
| buf[0] = EVENT_TYPE_LIST; |
| buf[1] = 5; |
| char* pos = &buf[2]; |
| char* end = &buf[LOGGER_ENTRY_MAX_PAYLOAD - 1]; // leave room for final \n |
| if (!push_eventlog_string(&pos, end, desc.string())) return; |
| if (!push_eventlog_int(&pos, end, code)) return; |
| if (!push_eventlog_int(&pos, end, duration_ms)) return; |
| if (!push_eventlog_string(&pos, end, process_name)) return; |
| if (!push_eventlog_int(&pos, end, sample_percent)) return; |
| *(pos++) = '\n'; // conventional with EVENT_TYPE_LIST apparently. |
| android_bWriteLog(LOGTAG_BINDER_OPERATION, buf, pos - buf); |
| } |
| |
| // We only measure binder call durations to potentially log them if |
| // we're on the main thread. |
| static bool should_time_binder_calls() { |
| return (getpid() == gettid()); |
| } |
| |
| static jboolean android_os_BinderProxy_transact(JNIEnv* env, jobject obj, |
| jint code, jobject dataObj, jobject replyObj, jint flags) // throws RemoteException |
| { |
| if (dataObj == NULL) { |
| jniThrowNullPointerException(env, NULL); |
| return JNI_FALSE; |
| } |
| |
| Parcel* data = parcelForJavaObject(env, dataObj); |
| if (data == NULL) { |
| return JNI_FALSE; |
| } |
| Parcel* reply = parcelForJavaObject(env, replyObj); |
| if (reply == NULL && replyObj != NULL) { |
| return JNI_FALSE; |
| } |
| |
| IBinder* target = (IBinder*) |
| env->GetLongField(obj, gBinderProxyOffsets.mObject); |
| if (target == NULL) { |
| jniThrowException(env, "java/lang/IllegalStateException", "Binder has been finalized!"); |
| return JNI_FALSE; |
| } |
| |
| ALOGV("Java code calling transact on %p in Java object %p with code %" PRId32 "\n", |
| target, obj, code); |
| |
| |
| bool time_binder_calls; |
| int64_t start_millis; |
| if (kEnableBinderSample) { |
| // Only log the binder call duration for things on the Java-level main thread. |
| // But if we don't |
| time_binder_calls = should_time_binder_calls(); |
| |
| if (time_binder_calls) { |
| start_millis = uptimeMillis(); |
| } |
| } |
| |
| //printf("Transact from Java code to %p sending: ", target); data->print(); |
| status_t err = target->transact(code, *data, reply, flags); |
| //if (reply) printf("Transact from Java code to %p received: ", target); reply->print(); |
| |
| if (kEnableBinderSample) { |
| if (time_binder_calls) { |
| conditionally_log_binder_call(start_millis, target, code); |
| } |
| } |
| |
| if (err == NO_ERROR) { |
| return JNI_TRUE; |
| } else if (err == UNKNOWN_TRANSACTION) { |
| return JNI_FALSE; |
| } |
| |
| signalExceptionForError(env, obj, err, true /*canThrowRemoteException*/, data->dataSize()); |
| return JNI_FALSE; |
| } |
| |
| static void android_os_BinderProxy_linkToDeath(JNIEnv* env, jobject obj, |
| jobject recipient, jint flags) // throws RemoteException |
| { |
| if (recipient == NULL) { |
| jniThrowNullPointerException(env, NULL); |
| return; |
| } |
| |
| IBinder* target = (IBinder*) |
| env->GetLongField(obj, gBinderProxyOffsets.mObject); |
| if (target == NULL) { |
| ALOGW("Binder has been finalized when calling linkToDeath() with recip=%p)\n", recipient); |
| assert(false); |
| } |
| |
| LOGDEATH("linkToDeath: binder=%p recipient=%p\n", target, recipient); |
| |
| if (!target->localBinder()) { |
| DeathRecipientList* list = (DeathRecipientList*) |
| env->GetLongField(obj, gBinderProxyOffsets.mOrgue); |
| sp<JavaDeathRecipient> jdr = new JavaDeathRecipient(env, recipient, list); |
| status_t err = target->linkToDeath(jdr, NULL, flags); |
| if (err != NO_ERROR) { |
| // Failure adding the death recipient, so clear its reference |
| // now. |
| jdr->clearReference(); |
| signalExceptionForError(env, obj, err, true /*canThrowRemoteException*/); |
| } |
| } |
| } |
| |
| static jboolean android_os_BinderProxy_unlinkToDeath(JNIEnv* env, jobject obj, |
| jobject recipient, jint flags) |
| { |
| jboolean res = JNI_FALSE; |
| if (recipient == NULL) { |
| jniThrowNullPointerException(env, NULL); |
| return res; |
| } |
| |
| IBinder* target = (IBinder*) |
| env->GetLongField(obj, gBinderProxyOffsets.mObject); |
| if (target == NULL) { |
| ALOGW("Binder has been finalized when calling linkToDeath() with recip=%p)\n", recipient); |
| return JNI_FALSE; |
| } |
| |
| LOGDEATH("unlinkToDeath: binder=%p recipient=%p\n", target, recipient); |
| |
| if (!target->localBinder()) { |
| status_t err = NAME_NOT_FOUND; |
| |
| // If we find the matching recipient, proceed to unlink using that |
| DeathRecipientList* list = (DeathRecipientList*) |
| env->GetLongField(obj, gBinderProxyOffsets.mOrgue); |
| sp<JavaDeathRecipient> origJDR = list->find(recipient); |
| LOGDEATH(" unlink found list %p and JDR %p", list, origJDR.get()); |
| if (origJDR != NULL) { |
| wp<IBinder::DeathRecipient> dr; |
| err = target->unlinkToDeath(origJDR, NULL, flags, &dr); |
| if (err == NO_ERROR && dr != NULL) { |
| sp<IBinder::DeathRecipient> sdr = dr.promote(); |
| JavaDeathRecipient* jdr = static_cast<JavaDeathRecipient*>(sdr.get()); |
| if (jdr != NULL) { |
| jdr->clearReference(); |
| } |
| } |
| } |
| |
| if (err == NO_ERROR || err == DEAD_OBJECT) { |
| res = JNI_TRUE; |
| } else { |
| jniThrowException(env, "java/util/NoSuchElementException", |
| "Death link does not exist"); |
| } |
| } |
| |
| return res; |
| } |
| |
| static void android_os_BinderProxy_destroy(JNIEnv* env, jobject obj) |
| { |
| // Don't race with construction/initialization |
| AutoMutex _l(mProxyLock); |
| |
| IBinder* b = (IBinder*) |
| env->GetLongField(obj, gBinderProxyOffsets.mObject); |
| DeathRecipientList* drl = (DeathRecipientList*) |
| env->GetLongField(obj, gBinderProxyOffsets.mOrgue); |
| |
| LOGDEATH("Destroying BinderProxy %p: binder=%p drl=%p\n", obj, b, drl); |
| if (b != nullptr) { |
| env->SetLongField(obj, gBinderProxyOffsets.mObject, 0); |
| env->SetLongField(obj, gBinderProxyOffsets.mOrgue, 0); |
| drl->decStrong((void*)javaObjectForIBinder); |
| b->decStrong((void*)javaObjectForIBinder); |
| } |
| |
| IPCThreadState::self()->flushCommands(); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| static const JNINativeMethod gBinderProxyMethods[] = { |
| /* name, signature, funcPtr */ |
| {"pingBinder", "()Z", (void*)android_os_BinderProxy_pingBinder}, |
| {"isBinderAlive", "()Z", (void*)android_os_BinderProxy_isBinderAlive}, |
| {"getInterfaceDescriptor", "()Ljava/lang/String;", (void*)android_os_BinderProxy_getInterfaceDescriptor}, |
| {"transactNative", "(ILandroid/os/Parcel;Landroid/os/Parcel;I)Z", (void*)android_os_BinderProxy_transact}, |
| {"linkToDeath", "(Landroid/os/IBinder$DeathRecipient;I)V", (void*)android_os_BinderProxy_linkToDeath}, |
| {"unlinkToDeath", "(Landroid/os/IBinder$DeathRecipient;I)Z", (void*)android_os_BinderProxy_unlinkToDeath}, |
| {"destroy", "()V", (void*)android_os_BinderProxy_destroy}, |
| }; |
| |
| const char* const kBinderProxyPathName = "android/os/BinderProxy"; |
| |
| static int int_register_android_os_BinderProxy(JNIEnv* env) |
| { |
| jclass clazz = FindClassOrDie(env, "java/lang/Error"); |
| gErrorOffsets.mClass = MakeGlobalRefOrDie(env, clazz); |
| |
| clazz = FindClassOrDie(env, kBinderProxyPathName); |
| gBinderProxyOffsets.mClass = MakeGlobalRefOrDie(env, clazz); |
| gBinderProxyOffsets.mConstructor = GetMethodIDOrDie(env, clazz, "<init>", "()V"); |
| gBinderProxyOffsets.mSendDeathNotice = GetStaticMethodIDOrDie(env, clazz, "sendDeathNotice", |
| "(Landroid/os/IBinder$DeathRecipient;)V"); |
| |
| gBinderProxyOffsets.mObject = GetFieldIDOrDie(env, clazz, "mObject", "J"); |
| gBinderProxyOffsets.mSelf = GetFieldIDOrDie(env, clazz, "mSelf", |
| "Ljava/lang/ref/WeakReference;"); |
| gBinderProxyOffsets.mOrgue = GetFieldIDOrDie(env, clazz, "mOrgue", "J"); |
| |
| clazz = FindClassOrDie(env, "java/lang/Class"); |
| gClassOffsets.mGetName = GetMethodIDOrDie(env, clazz, "getName", "()Ljava/lang/String;"); |
| |
| return RegisterMethodsOrDie( |
| env, kBinderProxyPathName, |
| gBinderProxyMethods, NELEM(gBinderProxyMethods)); |
| } |
| |
| // **************************************************************************** |
| // **************************************************************************** |
| // **************************************************************************** |
| |
| int register_android_os_Binder(JNIEnv* env) |
| { |
| if (int_register_android_os_Binder(env) < 0) |
| return -1; |
| if (int_register_android_os_BinderInternal(env) < 0) |
| return -1; |
| if (int_register_android_os_BinderProxy(env) < 0) |
| return -1; |
| |
| jclass clazz = FindClassOrDie(env, "android/util/Log"); |
| gLogOffsets.mClass = MakeGlobalRefOrDie(env, clazz); |
| gLogOffsets.mLogE = GetStaticMethodIDOrDie(env, clazz, "e", |
| "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/Throwable;)I"); |
| |
| clazz = FindClassOrDie(env, "android/os/ParcelFileDescriptor"); |
| gParcelFileDescriptorOffsets.mClass = MakeGlobalRefOrDie(env, clazz); |
| gParcelFileDescriptorOffsets.mConstructor = GetMethodIDOrDie(env, clazz, "<init>", |
| "(Ljava/io/FileDescriptor;)V"); |
| |
| clazz = FindClassOrDie(env, "android/os/StrictMode"); |
| gStrictModeCallbackOffsets.mClass = MakeGlobalRefOrDie(env, clazz); |
| gStrictModeCallbackOffsets.mCallback = GetStaticMethodIDOrDie(env, clazz, |
| "onBinderStrictModePolicyChange", "(I)V"); |
| |
| clazz = FindClassOrDie(env, "java/lang/Thread"); |
| gThreadDispatchOffsets.mClass = MakeGlobalRefOrDie(env, clazz); |
| gThreadDispatchOffsets.mDispatchUncaughtException = GetMethodIDOrDie(env, clazz, |
| "dispatchUncaughtException", "(Ljava/lang/Throwable;)V"); |
| gThreadDispatchOffsets.mCurrentThread = GetStaticMethodIDOrDie(env, clazz, "currentThread", |
| "()Ljava/lang/Thread;"); |
| |
| return 0; |
| } |
