core/jni/core_jni_helpers.cpp

/*
 * Copyright (C) 2022 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "core_jni_helpers.h"

namespace android {

namespace {

jmethodID gGetReferent = nullptr;

} // namespace

jobject GetReferent(JNIEnv* env, jobject ref) {
    if (gGetReferent == nullptr) {
        jclass clazz = FindClassOrDie(env, "java/lang/ref/Reference");
        gGetReferent = GetMethodIDOrDie(env, clazz, "get", "()Ljava/lang/Object;");
    }
    return env->CallObjectMethod(ref, gGetReferent);
}

} // namespace android