/*
 * Copyright 2016 higherfrequencytrading.com
 *
 * 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 net.openhft.chronicle.bytes.pool;

import net.openhft.chronicle.bytes.Bytes;
import net.openhft.chronicle.bytes.BytesUtil;
import net.openhft.chronicle.bytes.NativeBytes;
import org.jetbrains.annotations.NotNull;

/*
 * Created by Peter Lawrey on 20/12/16.
 */
public class BytesPool {
    final ThreadLocal<Bytes> bytesTL = new ThreadLocal<>();

    public Bytes acquireBytes() {
        Bytes bytes = bytesTL.get();
        if (bytes == null) {
            bytesTL.set(bytes = createBytes());
        } else {
            bytes.clear();
        }
        return bytes;
    }

    @NotNull
    protected Bytes createBytes() {
        NativeBytes<Void> bytes = Bytes.allocateElasticDirect(256);
        assert BytesUtil.unregister(bytes);
        return bytes;
    }
}
