/*

 * Copyright (c) 2013, 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * @test IsMethodCompilableTest

 * @bug 8007270

 * @library /testlibrary /testlibrary/whitebox

 * @build IsMethodCompilableTest

 * @run main ClassFileInstaller sun.hotspot.WhiteBox

 * @run main/othervm/timeout=600 -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI IsMethodCompilableTest

 * @author igor.ignatyev@oracle.com

 */

public class IsMethodCompilableTest extends CompilerWhiteBoxTest {

    protected static final long PER_METHOD_RECOMPILATION_CUTOFF;

    static {

        long tmp = Long.parseLong(

                getVMOption("PerMethodRecompilationCutoff", "400"));

        if (tmp == -1) {

            PER_METHOD_RECOMPILATION_CUTOFF = -1 /* Inf */;

        } else {

            PER_METHOD_RECOMPILATION_CUTOFF = 1 + (0xFFFFFFFFL & tmp);

        }

    }

    public static void main(String[] args) throws Exception {

        new IsMethodCompilableTest().runTest();

    }

    protected void test() throws Exception {

        if (!WHITE_BOX.isMethodCompilable(METHOD)) {

            throw new RuntimeException(METHOD + " must be compilable");

        }

        System.out.println("PerMethodRecompilationCutoff = "

                + PER_METHOD_RECOMPILATION_CUTOFF);

        if (PER_METHOD_RECOMPILATION_CUTOFF == -1) {

            System.err.println(

                    "Warning: test is not applicable if PerMethodRecompilationCutoff == Inf");

            return;

        }

        boolean madeNotCompilable = false;

        for (long i = 0; i < PER_METHOD_RECOMPILATION_CUTOFF; ++i) {

            compile();

            waitBackgroundCompilation(METHOD);

            WHITE_BOX.deoptimizeMethod(METHOD);

            if (!WHITE_BOX.isMethodCompilable(METHOD)) {

                madeNotCompilable = true;

                break;

            }

        }

        if (!madeNotCompilable) {

            throw new RuntimeException(METHOD + " is still compilable after "

                    + PER_METHOD_RECOMPILATION_CUTOFF + " iterations");

        }

        compile();

        if (WHITE_BOX.isMethodCompiled(METHOD)) {

            printInfo(METHOD);

            throw new RuntimeException(

                    METHOD + " is not compilable but compiled");

        }

    }

}