/*

 * Copyright (c) 2015, 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.core.test;

import org.graalvm.compiler.api.directives.GraalDirectives;

import org.junit.Test;

import jdk.vm.ci.code.InstalledCode;

import jdk.vm.ci.code.InvalidInstalledCodeException;

public class InstalledCodeInvalidationTest extends GraalCompilerTest {

    public void recurse(InstalledCode code, int depth) throws InvalidInstalledCodeException {

        if (depth > 1) {

            /*

             * Recurse a few times to ensure there are multiple activations.

             */

            code.executeVarargs(this, code, depth - 1);

        } else {

            /*

             * Deoptimize this activation and make the compiled code no longer usable.

             */

            GraalDirectives.deoptimizeAndInvalidate();

            assert code.isAlive() && !code.isValid();

            code.invalidate();

            assert !code.isAlive();

        }

        if (GraalDirectives.inCompiledCode()) {

            /*

             * If this still in compiled code then the deoptimizeAndInvalidate call above didn't

             * remove all existing activations.

             */

            throw new InternalError();

        }

    }

    /**

     * Test that after uncommon trapping in an installed code it's still possible to invalidate all

     * existing activations of that installed code.

     *

     * @throws InvalidInstalledCodeException

     */

    @Test

    public void testInstalledCodeInvalidation() throws InvalidInstalledCodeException {

        InstalledCode code = getCode(getMetaAccess().lookupJavaMethod(getMethod("recurse")));

        code.executeVarargs(this, code, 3);

    }

}