/*

 * Copyright (c) 2017, 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.

 *

 * 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.compiler.graph.test;

import org.graalvm.compiler.api.test.Graal;

import org.graalvm.compiler.debug.DebugHandlersFactory;

import org.graalvm.compiler.debug.DebugContext;

import org.graalvm.compiler.options.OptionValues;

import org.junit.After;

public abstract class GraphTest {

    static OptionValues getOptions() {

        return Graal.getRequiredCapability(OptionValues.class);

    }

    private final ThreadLocal<DebugContext> cachedDebug = new ThreadLocal<>();

    protected DebugContext getDebug(OptionValues options) {

        DebugContext cached = cachedDebug.get();

        if (cached != null) {

            if (cached.getOptions() == options) {

                return cached;

            }

            throw new AssertionError("At most one " + DebugContext.class.getName() + " object should be created per test");

        }

        DebugContext debug = DebugContext.create(options, DebugHandlersFactory.LOADER);

        cachedDebug.set(debug);

        return debug;

    }

    protected DebugContext getDebug() {

        return getDebug(getOptions());

    }

    @After

    public void afterTest() {

        DebugContext cached = cachedDebug.get();

        if (cached != null) {

            cached.closeDumpHandlers(true);

        }

    }

}