org.elasticsearch.cluster.coordination.CountingPageCacheRecycler Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of framework Show documentation

Elasticsearch subproject :test:framework

There is a newer version: 8.15.1

/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the "Elastic License
 * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
 * Public License v 1"; you may not use this file except in compliance with, at
 * your election, the "Elastic License 2.0", the "GNU Affero General Public
 * License v3.0 only", or the "Server Side Public License, v 1".
 */

package org.elasticsearch.cluster.coordination;

import org.elasticsearch.common.recycler.Recycler;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.util.PageCacheRecycler;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;

public class CountingPageCacheRecycler extends PageCacheRecycler {

    private int openPages = 0;

    public CountingPageCacheRecycler() {
        super(Settings.EMPTY);
    }

    @Override
    public Recycler.V bytePage(boolean clear) {
        final var page = super.bytePage(clear);
        openPages += 1;
        return new Recycler.V<>() {
            boolean closed = false;

            @Override
            public byte[] v() {
                return page.v();
            }

            @Override
            public boolean isRecycled() {
                return page.isRecycled();
            }

            @Override
            public void close() {
                assertFalse(closed);
                closed = true;
                openPages -= 1;
                page.close();
            }
        };
    }

    @Override
    public Recycler.V objectPage() {
        throw new AssertionError("unexpected call to objectPage()");
    }

    public void assertAllPagesReleased() {
        assertEquals(0, openPages);
    }
}