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Implementation of generic space-limited pool for memory management (RAM, GPU memory, etc)

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/**
 * Copyright 2023 Valery Silaev (http://vsilaev.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.tascalate.memory.nio;

import java.nio.ByteBuffer;

import net.tascalate.memory.core.CleanerMethodsCache;

public class DirectByteBufferHandler extends ByteBufferHandler {
    
    protected DirectByteBufferHandler() {
        
    }
    
    @Override
    public ByteBuffer create(long capacity) {
        return ByteBuffer.allocateDirect(verifySizeParam(capacity));
    }
 
    @Override
    public void destroy(ByteBuffer resource) {
        if (null != resource && resource.isDirect()) {
            CleanerMethodsCache.cleanerOf(resource.getClass()).accept(resource);
        }
    }
    
    public static DirectByteBufferHandler instance() {
        return INSTANCE;
    }
    
    private static final DirectByteBufferHandler INSTANCE = new DirectByteBufferHandler();
}