Igor Murashkin | 31927e4 | 2017-02-17 15:50:15 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2017 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 | /* |
| 18 | * JNI helper macros. |
| 19 | * |
| 20 | * Only intended to be used in the platform. |
| 21 | */ |
| 22 | |
| 23 | #ifndef NATIVEHELPER_JNI_MACROS_H |
| 24 | #define NATIVEHELPER_JNI_MACROS_H |
| 25 | |
| 26 | |
| 27 | // Intended to construct a JNINativeMethod. |
| 28 | // (Assumes the C name is the ClassName_JavaMethodName). |
| 29 | #ifndef NATIVE_METHOD |
| 30 | #define NATIVE_METHOD(className, functionName, signature) \ |
| 31 | { #functionName, \ |
| 32 | signature, \ |
| 33 | _NATIVEHELPER_JNI_MACRO_CAST(void*) (className ## _ ## functionName) \ |
| 34 | } |
| 35 | #endif |
| 36 | |
| 37 | // Intended to construct a JNINativeMethod (when the C name doesn't match the Java name). |
| 38 | // (Assumes the C name is the ClassName_Identifier). |
| 39 | #ifndef OVERLOADED_NATIVE_METHOD |
| 40 | #define OVERLOADED_NATIVE_METHOD(className, functionName, signature, identifier) \ |
| 41 | { #functionName, \ |
| 42 | signature, \ |
| 43 | _NATIVEHELPER_JNI_MACRO_CAST(void*) (className ## _ ## identifier) \ |
| 44 | } |
| 45 | #endif |
| 46 | |
| 47 | // Used for methods that are annotated with @FastNative on the managed side. |
| 48 | // See NATIVE_METHOD for usage. |
| 49 | #ifndef FAST_NATIVE_METHOD |
| 50 | #define FAST_NATIVE_METHOD(className, functionName, signature) \ |
| 51 | { #functionName, \ |
| 52 | signature, \ |
| 53 | _NATIVEHELPER_JNI_MACRO_CAST(void*) (className ## _ ## functionName) \ |
| 54 | } |
| 55 | #endif |
| 56 | |
| 57 | // Used for methods that are annotated with @FastNative on the managed side, |
| 58 | // and when the C-name doesn't match the Java-name. |
| 59 | // |
| 60 | // See OVERLOADED_NATIVE_METHOD for usage. |
| 61 | #ifndef OVERLOADED_FAST_NATIVE_METHOD |
| 62 | #define OVERLOADED_FAST_NATIVE_METHOD(className, functionName, signature, identifier) \ |
| 63 | { #functionName, \ |
| 64 | signature, \ |
| 65 | _NATIVEHELPER_JNI_MACRO_CAST(void*) (className ## _ ## identifier) \ |
| 66 | } |
| 67 | #endif |
| 68 | |
| 69 | //////////////////////////////////////////////////////// |
| 70 | // IMPLEMENTATION ONLY. |
| 71 | // DO NOT USE DIRECTLY. |
| 72 | //////////////////////////////////////////////////////// |
| 73 | |
| 74 | |
| 75 | // C-style cast for C, C++-style cast for C++ to avoid warnings/errors. |
| 76 | #if defined(__cplusplus) |
| 77 | #define _NATIVEHELPER_JNI_MACRO_CAST(to) \ |
| 78 | reinterpret_cast<to> |
| 79 | #else |
| 80 | #define _NATIVEHELPER_JNI_MACRO_CAST(to) \ |
| 81 | (to) |
| 82 | #endif |
| 83 | |
| 84 | #endif |