1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef LIBNATIVEHELPER_HEADER_ONLY_INCLUDE_NATIVEHELPER_NATIVEHELPER_UTILS_H_ 18 #define LIBNATIVEHELPER_HEADER_ONLY_INCLUDE_NATIVEHELPER_NATIVEHELPER_UTILS_H_ 19 20 #if defined(__cplusplus) 21 22 #if !defined(DISALLOW_COPY_AND_ASSIGN) 23 // DISALLOW_COPY_AND_ASSIGN disallows the copy and operator= functions. It goes in the private: 24 // declarations in a class. 25 #define DISALLOW_COPY_AND_ASSIGN(TypeName) \ 26 TypeName(const TypeName&) = delete; \ 27 void operator=(const TypeName&) = delete 28 #endif // !defined(DISALLOW_COPY_AND_ASSIGN) 29 30 // This seems a header-only include. Provide NPE throwing. 31 static inline int jniThrowNullPointerException(JNIEnv* env) { 32 if (env->ExceptionCheck()) { 33 // Drop any pending exception. 34 env->ExceptionClear(); 35 } 36 37 jclass e_class = env->FindClass("java/lang/NullPointerException"); 38 if (e_class == nullptr) { 39 return -1; 40 } 41 42 if (env->ThrowNew(e_class, nullptr) != JNI_OK) { 43 env->DeleteLocalRef(e_class); 44 return -1; 45 } 46 47 env->DeleteLocalRef(e_class); 48 return 0; 49 } 50 51 #endif // defined(__cplusplus) 52 53 #endif // LIBNATIVEHELPER_HEADER_ONLY_INCLUDE_NATIVEHELPER_NATIVEHELPER_UTILS_H_ 54