1 /* 2 * Copyright (C) 2014 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 #include "java_lang_ref_Reference.h" 18 19 #include "nativehelper/jni_macros.h" 20 21 #include "gc/heap.h" 22 #include "gc/reference_processor.h" 23 #include "jni_internal.h" 24 #include "mirror/object-inl.h" 25 #include "mirror/reference-inl.h" 26 #include "native_util.h" 27 #include "scoped_fast_native_object_access-inl.h" 28 29 namespace art { 30 31 static jobject Reference_getReferent(JNIEnv* env, jobject javaThis) { 32 ScopedFastNativeObjectAccess soa(env); 33 ObjPtr<mirror::Reference> ref = soa.Decode<mirror::Reference>(javaThis); 34 ObjPtr<mirror::Object> const referent = 35 Runtime::Current()->GetHeap()->GetReferenceProcessor()->GetReferent(soa.Self(), ref); 36 return soa.AddLocalReference<jobject>(referent); 37 } 38 39 static void Reference_clearReferent(JNIEnv* env, jobject javaThis) { 40 ScopedFastNativeObjectAccess soa(env); 41 ObjPtr<mirror::Reference> ref = soa.Decode<mirror::Reference>(javaThis); 42 Runtime::Current()->GetHeap()->GetReferenceProcessor()->ClearReferent(ref); 43 } 44 45 static JNINativeMethod gMethods[] = { 46 FAST_NATIVE_METHOD(Reference, getReferent, "()Ljava/lang/Object;"), 47 FAST_NATIVE_METHOD(Reference, clearReferent, "()V"), 48 }; 49 50 void register_java_lang_ref_Reference(JNIEnv* env) { 51 REGISTER_NATIVE_METHODS("java/lang/ref/Reference"); 52 } 53 54 } // namespace art 55
