| /* |
| * Copyright (C) 2020 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 "ServiceManager" |
| //#define LOG_NDEBUG 0 |
| #include <android-base/logging.h> |
| |
| #include <binder/IInterface.h> |
| #include <binder/IServiceManager.h> |
| #include <nativehelper/JNIHelp.h> |
| |
| #include "android_util_Binder.h" |
| #include "core_jni_helpers.h" |
| |
| namespace android { |
| |
| // Native because we have a client-side wait in waitForService() and we do not |
| // want an unnecessary second copy of it. |
| static jobject android_os_ServiceManager_waitForService( |
| JNIEnv *env, |
| jclass /* clazzObj */, |
| jstring serviceNameObj) { |
| |
| const jchar* serviceName = env->GetStringCritical(serviceNameObj, nullptr); |
| if (!serviceName) { |
| jniThrowNullPointerException(env, nullptr); |
| return nullptr; |
| } |
| String16 nameCopy = String16(reinterpret_cast<const char16_t *>(serviceName), |
| env->GetStringLength(serviceNameObj)); |
| env->ReleaseStringCritical(serviceNameObj, serviceName); |
| |
| sp<IBinder> service = defaultServiceManager()->waitForService(nameCopy); |
| |
| if (!service) { |
| return nullptr; |
| } |
| |
| return javaObjectForIBinder(env, service); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| static const JNINativeMethod method_table[] = { |
| /* name, signature, funcPtr */ |
| { |
| "waitForService", |
| "(Ljava/lang/String;)Landroid/os/IBinder;", |
| (void*)android_os_ServiceManager_waitForService |
| }, |
| }; |
| |
| int register_android_os_ServiceManager(JNIEnv* env) { |
| return RegisterMethodsOrDie( |
| env, "android/os/ServiceManager", method_table, NELEM(method_table)); |
| } |
| |
| }; // namespace android |