1 /* 2 * Copyright 2019 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 #ifndef SDK_ANDROID_SRC_JNI_SCOPED_JAVA_REF_COUNTED_H_ 11 #define SDK_ANDROID_SRC_JNI_SCOPED_JAVA_REF_COUNTED_H_ 12 13 #include "sdk/android/native_api/jni/scoped_java_ref.h" 14 15 namespace webrtc { 16 namespace jni { 17 18 // Holds a reference to a java object implementing the RefCounted interface, and 19 // calls its release() method from the destructor. 20 class ScopedJavaRefCounted { 21 public: 22 // Takes over the caller's reference. Adopt(JNIEnv * jni,const JavaRef<jobject> & j_object)23 static ScopedJavaRefCounted Adopt(JNIEnv* jni, 24 const JavaRef<jobject>& j_object) { 25 return ScopedJavaRefCounted(jni, j_object); 26 } 27 28 // Retains the java object for the live time of this object. 29 static ScopedJavaRefCounted Retain(JNIEnv* jni, 30 const JavaRef<jobject>& j_object); 31 ScopedJavaRefCounted(ScopedJavaRefCounted&& other) = default; 32 33 ScopedJavaRefCounted(const ScopedJavaRefCounted& other) = delete; 34 ScopedJavaRefCounted& operator=(const ScopedJavaRefCounted&) = delete; 35 36 ~ScopedJavaRefCounted(); 37 38 private: 39 // Adopts reference. ScopedJavaRefCounted(JNIEnv * jni,const JavaRef<jobject> & j_object)40 ScopedJavaRefCounted(JNIEnv* jni, const JavaRef<jobject>& j_object) 41 : j_object_(jni, j_object) {} 42 43 ScopedJavaGlobalRef<jobject> j_object_; 44 }; 45 46 } // namespace jni 47 } // namespace webrtc 48 49 #endif // SDK_ANDROID_SRC_JNI_SCOPED_JAVA_REF_COUNTED_H_ 50