/*

 * Copyright (c) 2013, 2016, 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 ClearMethodStateTest

 * @bug 8006683 8007288 8022832

 * @summary testing of WB::clearMethodState()

 * @library /test/lib /

 * @modules java.base/jdk.internal.misc

 *          java.management

 * @build sun.hotspot.WhiteBox

 * @run driver ClassFileInstaller sun.hotspot.WhiteBox

 *                                sun.hotspot.WhiteBox$WhiteBoxPermission

 * @run main/othervm -Xbootclasspath/a:. -Xmixed -XX:+UnlockDiagnosticVMOptions

 *                   -XX:+WhiteBoxAPI -XX:+PrintCompilation -XX:-UseCounterDecay

 *                   compiler.whitebox.ClearMethodStateTest

 */

package compiler.whitebox;

public class ClearMethodStateTest extends CompilerWhiteBoxTest {

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

        String directive =

                "[{ match:\"*SimpleTestCaseHelper.*\", BackgroundCompilation: false }, " +

                " { match:\"*.*\", inline:\"-*SimpleTestCaseHelper.*\"}]";

        if (WHITE_BOX.addCompilerDirective(directive) != 2) {

            throw new RuntimeException("Could not add directive");

        }

        try {

            CompilerWhiteBoxTest.main(ClearMethodStateTest::new, args);

        } finally {

            WHITE_BOX.removeCompilerDirective(2);

        }

    }

    private ClearMethodStateTest(TestCase testCase) {

        super(testCase);

        // to prevent inlining of #method

        WHITE_BOX.testSetDontInlineMethod(method, true);

    }

    /**

     * Tests {@code WB::clearMethodState()} by calling it before/after

     * compilation. For non-tiered, checks that counters will be rested after

     * clearing of method state.

     *

     * @throws Exception if one of the checks fails.

     */

    @Override

    protected void test() throws Exception {

        checkNotCompiled();

        compile();

        WHITE_BOX.clearMethodState(method);

        checkCompiled();

        WHITE_BOX.clearMethodState(method);

        deoptimize();

        checkNotCompiled();

        if (testCase.isOsr()) {

            // part test isn't applicable for OSR test case

            return;

        }

        if (!TIERED_COMPILATION) {

            WHITE_BOX.clearMethodState(method);

            compile(COMPILE_THRESHOLD);

            checkCompiled();

            deoptimize();

            checkNotCompiled();

            WHITE_BOX.clearMethodState(method);

            // invoke method one less time than needed to compile

            if (COMPILE_THRESHOLD > 1) {

                compile(COMPILE_THRESHOLD - 1);

                checkNotCompiled();

            } else {

                System.err.println("Warning: 'CompileThreshold' <= 1");

            }

            compile(1);

            checkCompiled();

        } else {

            System.err.println(

                    "Warning: part of test is not applicable in Tiered");

        }

    }

}