/*
 * Copyright 2016 Realm Inc.
 *
 * 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.
 */

package io.realm.internal;


import java.lang.ref.ReferenceQueue;

import io.realm.log.RealmLog;


// Running in the FinalizingDaemon thread to free native objects.
class FinalizerRunnable implements Runnable {
    private final ReferenceQueue<NativeObject> referenceQueue;

    FinalizerRunnable(ReferenceQueue<NativeObject> referenceQueue) {
        this.referenceQueue = referenceQueue;
    }

    @Override
    public void run() {
        while (true) {
            try {
                NativeObjectReference reference = (NativeObjectReference) referenceQueue.remove();
                reference.cleanup();
            } catch (InterruptedException e) {
                // Restores the interrupted status.
                Thread.currentThread().interrupt();

                RealmLog.fatal("The FinalizerRunnable thread has been interrupted." +
                        " Native resources cannot be freed anymore");
                break;
            }
        }
    }
}
