/*

 * Copyright (c) 2014, 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 LockCompilationTest

 * @bug 8059624 8152169

 * @summary testing of WB::lock/unlockCompilation()

 * @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:-UseCounterDecay

 *                   compiler.whitebox.LockCompilationTest

 */

package compiler.whitebox;

import jdk.test.lib.Asserts;

public class LockCompilationTest extends CompilerWhiteBoxTest {

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

        // This case waits for 5 seconds and verifies that the method hasn't been

        // compiled during that time. Only do that for one of the test cases.

        // Only compile SimpleTestCaseHelper.method and exclude all other to ensure no

        // contention on the compile queue causes problems.

        String directive =

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

                " { match:\"*.*\", Exclude:true}]";

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

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

        }

        try {

            CompilerWhiteBoxTest.main(LockCompilationTest::new, new String[] {"METHOD_TEST"});

        } finally {

            WHITE_BOX.removeCompilerDirective(2);

        }

    }

    private LockCompilationTest(TestCase testCase) {

        super(testCase);

        // to prevent inlining of #method

        WHITE_BOX.testSetDontInlineMethod(method, true);

    }

    protected void test() throws Exception {

        checkNotCompiled();

        System.out.println("locking compilation");

        WHITE_BOX.lockCompilation();

        try {

            System.out.println("trying to compile");

            compile();

            // to check if it works correctly w/ safepoints

            System.out.println("going to safepoint");

            WHITE_BOX.fullGC();

            // Sleep a while and then make sure the compile is still waiting

            Thread.sleep(5000);

            Asserts.assertTrue(

                    WHITE_BOX.isMethodQueuedForCompilation(method),

                    method + " must be in queue");

            Asserts.assertFalse(

                    WHITE_BOX.isMethodCompiled(method, false),

                    method + " must be not compiled");

            Asserts.assertEQ(

                    WHITE_BOX.getMethodCompilationLevel(method, false), 0,

                    method + " comp_level must be == 0");

            Asserts.assertFalse(

                    WHITE_BOX.isMethodCompiled(method, true),

                    method + " must be not osr_compiled");

            Asserts.assertEQ(

                    WHITE_BOX.getMethodCompilationLevel(method, true), 0,

                    method + " osr_comp_level must be == 0");

        } finally {

            System.out.println("unlocking compilation");

            WHITE_BOX.unlockCompilation();

        }

        waitBackgroundCompilation();

        Asserts.assertFalse(

                WHITE_BOX.isMethodQueuedForCompilation(method),

                method + " must not be in queue");

    }

}