1 /* 2 * Copyright (C) 2018 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 ANDROID_OS_NATIVE_HANDLE_H 18 #define ANDROID_OS_NATIVE_HANDLE_H 19 20 #include "hwbinder/EphemeralStorage.h" 21 22 #include <cutils/native_handle.h> 23 #include <jni.h> 24 25 namespace android { 26 27 struct JNativeHandle { 28 29 /** 30 * Returns a Java NativeHandle object representing the parameterized 31 * native_handle_t instance. 32 */ 33 static jobject MakeJavaNativeHandleObj(JNIEnv *env, const native_handle_t *handle); 34 35 /** 36 * Returns a heap-allocated native_handle_t instance representing the 37 * parameterized Java object. Note that if no valid EphemeralStorage* 38 * parameter is supplied (storage is nullptr), the return value must 39 * be explicitly deallocated (using native_handle_delete). 40 */ 41 static native_handle_t* MakeCppNativeHandle(JNIEnv *env, jobject jHandle, 42 EphemeralStorage *storage); 43 44 /** 45 * Returns an (uninitialized) array of Java NativeHandle objects. 46 */ 47 static jobjectArray AllocJavaNativeHandleObjArray(JNIEnv *env, jsize length); 48 }; 49 50 } 51 52 #endif // ANDROID_OS_NATIVE_HANDLE_H 53