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 *  DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 *  This code is free software; you can redistribute it and/or modify it
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 *  published by the Free Software Foundation.  Oracle designates this
 *  particular file as subject to the "Classpath" exception as provided
 *  by Oracle in the LICENSE file that accompanied this code.
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 *  This code is distributed in the hope that it will be useful, but WITHOUT
 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 *  version 2 for more details (a copy is included in the LICENSE file that
 *  accompanied this code).
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 *  Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package jdk.internal.clang;

import jdk.incubator.foreign.MemorySegment;

import java.util.LinkedHashSet;
import java.util.Set;

class AllocationScope implements AutoCloseable {
    private final Set<MemorySegment> segments = new LinkedHashSet<>();

    MemorySegment track(MemorySegment segment) {
        if (!segments.add(segment)) {
            throw new IllegalArgumentException("Attempt to track a memory segment twice");
        }
        return segment;
    }

    void forget(MemorySegment segment) {
        if (!segments.remove(segment)) {
            throw new IllegalArgumentException("Attempt to forget a memory segment not tracked by this scope");
        }
    }

    @Override
    public void close() {
        var currentThread = Thread.currentThread();
        segments.stream()
                .filter(ms -> ms.owner() == currentThread)
                .forEach(MemorySegment::close);
    }
}