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 * Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * 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.
 *
 * 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).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package org.graalvm.visualvm.lib.profiler.snaptracer;

import org.graalvm.visualvm.lib.profiler.snaptracer.impl.TracerSupportImpl;

/**
 * Entrypoint to the Tracer. Use this class to register and unregister
 * TracerPackageProvider implementations.
 *
 * @author Jiri Sedlacek
 */
public final class TracerSupport {

    private static TracerSupport INSTANCE;


    /**
     * Returns singleton instance of TracerSupport.
     *
     * @return singleton instance of TracerSupport
     */
    public static synchronized TracerSupport getInstance() {
        if (INSTANCE == null) INSTANCE = new TracerSupport();
        return INSTANCE;
    }


    /**
     * Registers TracerPackageProvider.
     *
     * @param provider TracerPackageProvider
     */
    public void registerPackageProvider(TracerPackageProvider provider) {
        TracerSupportImpl.getInstance().registerPackageProvider(provider);
    }

    /**
     * Unregisters TracerPackageProvider.
     *
     * @param povider TracerPackageProvider
     */
    public void unregisterPackageProvider(TracerPackageProvider povider) {
        TracerSupportImpl.getInstance().unregisterPackageProvider(povider);
    }


    private TracerSupport() {}

}
