/*
 * Adapted from The MIT License (MIT)
 *
 * Copyright (c) 2018-2022 DaPorkchop_
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,
 * modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software
 * is furnished to do so, subject to the following conditions:
 *
 * Any persons and/or organizations using this software must include the above copyright notice and this permission notice,
 * provide sufficient credit to the original authors of the project (IE: DaPorkchop_), as well as provide a link to the original project.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */

package net.daporkchop.lib.common.misc.refcount;

import lombok.Getter;
import lombok.ToString;
import lombok.experimental.Accessors;
import net.daporkchop.lib.unsafe.PCleaner;
import net.daporkchop.lib.unsafe.PUnsafe;
import net.daporkchop.lib.common.util.exception.AlreadyReleasedException;

/**
 * A reference-counted block of direct memory.
 *
 * @author DaPorkchop_
 */
@ToString
@Getter
@Accessors(fluent = true)
public final class RefCountedDirectMemory extends AbstractRefCounted {
    private final long addr;
    private final long size;

    private final PCleaner cleaner;

    public RefCountedDirectMemory(long size)    {
        this(PUnsafe.allocateMemory(size), size, true);
    }

    public RefCountedDirectMemory(long addr, long size, boolean doFree)    {
        this.addr = addr;
        this.size = size;
        this.cleaner = doFree ? PCleaner.cleaner(this, addr) : null;
    }

    @Override
    public RefCountedDirectMemory retain() throws AlreadyReleasedException {
        super.retain();
        return this;
    }

    @Override
    protected void doRelease() {
        if (this.cleaner != null)   {
            this.cleaner.clean();
        }
    }
}
