/*

 * Copyright (c) 2015, 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

 * @bug 8136421

 * @library /test/lib /

 * @library ../common/patches

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

 * @modules java.base/jdk.internal.org.objectweb.asm

 *          java.base/jdk.internal.org.objectweb.asm.tree

 *          jdk.vm.ci/jdk.vm.ci.hotspot

 *          jdk.vm.ci/jdk.vm.ci.code

 *

 * @build jdk.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper sun.hotspot.WhiteBox

 * @run driver ClassFileInstaller sun.hotspot.WhiteBox

 *                                sun.hotspot.WhiteBox$WhiteBoxPermission

 * @run main/othervm -Xbootclasspath/a:.

 *                   -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI

 *                   -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI

 *                   -XX:-BackgroundCompilation

 *                   compiler.jvmci.compilerToVM.HasCompiledCodeForOSRTest

 */

package compiler.jvmci.compilerToVM;

import compiler.jvmci.common.CTVMUtilities;

import compiler.testlibrary.CompilerUtils;

import jdk.test.lib.Asserts;

import jdk.test.lib.Utils;

import jdk.vm.ci.hotspot.CompilerToVMHelper;

import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;

import sun.hotspot.code.NMethod;

import java.lang.reflect.Executable;

import java.util.ArrayList;

import java.util.List;

public class HasCompiledCodeForOSRTest {

    public static void main(String[] args) {

        List<CompileCodeTestCase> testCases = createTestCases();

        testCases.forEach(HasCompiledCodeForOSRTest::runSanityTest);

    }

    public static List<CompileCodeTestCase> createTestCases() {

        List<CompileCodeTestCase> testCases = new ArrayList<>();

        try {

            Class<?> aClass = DummyClass.class;

            Object receiver = new DummyClass();

            testCases.add(new CompileCodeTestCase(receiver,

                    aClass.getMethod("withLoop"), 17));

        } catch (NoSuchMethodException e) {

            throw new Error("TEST BUG : " + e.getMessage(), e);

        }

        return testCases;

    }

    private static void runSanityTest(CompileCodeTestCase testCase) {

        System.out.println(testCase);

        Executable aMethod = testCase.executable;

        HotSpotResolvedJavaMethod method = CTVMUtilities

                .getResolvedMethod(aMethod);

        testCase.invoke(Utils.getNullValues(aMethod.getParameterTypes()));

        testCase.deoptimize();

        int[] levels = CompilerUtils.getAvailableCompilationLevels();

        // not compiled

        for (int level : levels) {

            boolean isCompiled = CompilerToVMHelper.hasCompiledCodeForOSR(

                    method, testCase.bci, level);

            Asserts.assertFalse(isCompiled, String.format(

                    "%s : unexpected return value for non-compiled method at "

                            + "level %d", testCase, level));

        }

        NMethod nm = testCase.compile();

        if (nm == null) {

            throw new Error(String.format(

                    "TEST BUG : %s : cannot compile method", testCase));

        }

        boolean isCompiled;

        int level = nm.comp_level;

        int[] someLevels = new int[] {-4, 0, 1, 2, 3, 4, 5, 45};

        // check levels

        for (int i : someLevels) {

            isCompiled = CompilerToVMHelper.hasCompiledCodeForOSR(

                    method, testCase.bci, i);

            Asserts.assertEQ(isCompiled, level == i, String.format(

                    "%s : unexpected return value for compiled method at "

                            + "level %d", testCase, i));

        }

        // check bci

        byte[] bytecode = CompilerToVMHelper.getBytecode(CTVMUtilities

                .getResolvedMethod(testCase.executable));

        int[] incorrectBci = new int[] {

                testCase.bci + 1,

                testCase.bci - 1,

                -200,

                -10,

                bytecode.length,

                bytecode.length + 1,

                bytecode.length + 4,

                bytecode.length + 200

        };

        for (int bci : incorrectBci) {

            isCompiled = CompilerToVMHelper.hasCompiledCodeForOSR(

                    method, bci, level);

            Asserts.assertFalse(isCompiled, String.format(

                    "%s : unexpected return value for compiled method at "

                            + "level %d with bci = %d ",

                    testCase, level, bci));

        }

    }

}